/* ================================
   WorkTrack - Jony Ive Flat Design
   Minimalist, Modern, Sophisticated
   ================================ */

/* CSS Variables */
:root {
    /* Core Colors - Muted and Sophisticated */
    --color-primary: #0A84FF;
    --color-primary-hover: #0077ED;
    --color-success: #30D158;
    --color-danger: #FF453A;
    --color-warning: #FFD60A;
    
    /* Period Colors (subtle, professional) */
    --period-color-0: #FF6B6B;
    --period-color-1: #4ECDC4;
    --period-color-2: #45B7D1;
    --period-color-3: #96CEB4;
    --period-color-4: #FFEAA7;
    --period-color-5: #DFE6E9;
    --period-color-6: #A29BFE;
    --period-color-7: #FD79A8;
    --period-color-8: #FDCB6E;
    --period-color-9: #6C5CE7;
    
    /* Neutrals - Clean Palette */
    --color-background: #FAFAFA;
    --color-surface: #FFFFFF;
    --color-surface-secondary: #F5F5F7;
    --color-border: #D1D1D6;
    --color-border-light: #E5E5EA;
    --color-text-primary: #1D1D1F;
    --color-text-secondary: #86868B;
    --color-text-tertiary: #A1A1A6;
    
    /* Shadows - Minimal and Subtle */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.12);
    
    /* Spacing - Consistent and Breathable */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    
    /* Border Radius - Subtle */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Typography - San Francisco Style */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 11px;
    --font-size-sm: 13px;
    --font-size-base: 15px;
    --font-size-lg: 17px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 32px;
    --font-size-4xl: 40px;
    
    /* Transitions - Subtle and Quick */
    --transition-fast: 120ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 400;
    line-height: 1.5;
    color: var(--color-text-primary);
    background-color: var(--color-background);
    min-height: 100vh;
}

/* Container */
.container {
    max-width: 680px;
    margin: 0 auto;
    padding: var(--space-lg) var(--space-md);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 { font-size: var(--font-size-3xl); font-weight: 700; }
h2 { font-size: var(--font-size-xl); font-weight: 600; }
h3 { font-size: var(--font-size-lg); font-weight: 600; }

.app-title {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--color-text-primary);
}

/* Header Section */
.header-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-border-light);
}

.header-actions {
    display: flex;
    gap: var(--space-xs);
}

/* Flat Design Buttons */
.btn-primary,
.btn-secondary,
.btn-flat,
.btn-flat-text,
.btn-flat-small {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    outline: none;
    -webkit-tap-highlight-color: transparent;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
}

.btn-primary {
    background-color: var(--color-primary);
    color: white;
    padding: 11px 20px;
    border: 1px solid transparent;
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-secondary {
    background-color: var(--color-surface);
    color: var(--color-text-primary);
    padding: 10px 18px;
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background-color: var(--color-surface-secondary);
    border-color: var(--color-text-secondary);
}

.btn-secondary:active {
    transform: scale(0.98);
}

.btn-flat {
    background-color: var(--color-surface);
    color: var(--color-text-primary);
    padding: 8px 16px;
    border: 1px solid var(--color-border);
    font-size: var(--font-size-sm);
}

.btn-flat:hover {
    background-color: var(--color-surface-secondary);
}

.btn-flat-text {
    background: transparent;
    color: var(--color-primary);
    padding: 8px 12px;
    font-size: var(--font-size-sm);
}

.btn-flat-text:hover {
    background-color: rgba(10, 132, 255, 0.08);
}

.btn-flat-small {
    background: transparent;
    color: var(--color-text-primary);
    padding: 6px 12px;
    border: 1px solid var(--color-border);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.btn-flat-small:hover {
    background-color: var(--color-surface-secondary);
}

.btn-icon-flat {
    background: transparent;
    color: var(--color-text-secondary);
    width: 36px;
    height: 36px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-icon-flat svg {
    width: 20px;
    height: 20px;
}

.btn-icon-flat:hover {
    background-color: rgba(0, 0, 0, 0.04);
    color: var(--color-text-primary);
}

.btn-icon-flat:active {
    transform: scale(0.95);
}

.btn-close {
    background: transparent;
    color: var(--color-text-tertiary);
    font-size: 28px;
    width: 32px;
    height: 32px;
    padding: 0;
    line-height: 1;
    border: none;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.btn-close:hover {
    color: var(--color-text-primary);
}

.btn-close:active {
    transform: scale(0.95);
}

/* Clock Actions Card */
.clock-actions-card {
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    border: 1px solid var(--color-border-light);
}

.clock-buttons-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.btn-clock {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl) var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-family);
    gap: var(--space-sm);
    min-height: 140px;
}

.btn-clock svg {
    transition: transform var(--transition-fast);
}

.btn-clock .clock-icon {
    width: 40px;
    height: 40px;
}

.btn-clock span {
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--color-text-secondary);
}

.btn-clock .clock-time {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-top: var(--space-xs);
    letter-spacing: -0.02em;
}

.btn-clock-in {
    border-color: var(--color-success);
    color: var(--color-success);
}

.btn-clock-in .clock-icon {
    stroke: var(--color-success);
}

.btn-clock-in:hover:not(:disabled) {
    background: rgba(48, 209, 88, 0.04);
    border-color: var(--color-success);
}

.btn-clock-in:active:not(:disabled) {
    transform: scale(0.98);
}

.btn-clock-in.active {
    background: var(--color-success);
    color: white;
    border-color: var(--color-success);
}

.btn-clock-in.active .clock-icon {
    stroke: white;
}

.btn-clock-in.active span,
.btn-clock-in.active .clock-time {
    color: white;
}

.btn-clock-out {
    border-color: var(--color-danger);
    color: var(--color-danger);
}

.btn-clock-out .clock-icon {
    stroke: var(--color-danger);
}

.btn-clock-out:hover:not(:disabled) {
    background: rgba(255, 69, 58, 0.04);
    border-color: var(--color-danger);
}

.btn-clock-out:active:not(:disabled) {
    transform: scale(0.98);
}

.btn-clock-out:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-clock.completed {
    background: var(--color-surface-secondary);
    opacity: 0.7;
    cursor: not-allowed;
    border-color: var(--color-border);
}

.btn-clock.completed .clock-icon {
    stroke: var(--color-text-tertiary);
}

.btn-clock.completed span,
.btn-clock.completed .clock-time {
    color: var(--color-text-secondary);
}

.elapsed-time {
    text-align: center;
    padding: var(--space-md);
    background: var(--color-surface-secondary);
    border-radius: var(--radius-md);
}

.elapsed-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-right: var(--space-xs);
}

.elapsed-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
}

/* Selected Day Banner */
.selected-day-banner {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-lg);
    padding: var(--space-md) var(--space-lg);
    margin-bottom: var(--space-lg);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-md);
}

.selected-day-info h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-xs);
}

.selected-day-info p {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

.selected-day-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.selected-day-actions .btn-text {
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 6px 12px;
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    gap: 6px;
}

.selected-day-actions .btn-text:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-icon-sm {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: var(--radius-sm);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: white;
    transition: all var(--transition-fast);
}

.btn-icon-sm:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

.btn-icon-sm:active {
    transform: scale(0.95);
}

/* Button Variants */
.btn-block {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
}

.btn-icon-text {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 10px 20px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.stat-card {
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    border: 1px solid var(--color-border-light);
    transition: border-color var(--transition-fast);
}

.stat-card:hover {
    border-color: var(--color-border);
}

.stat-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

.stat-value {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-xs);
    letter-spacing: -0.02em;
}

.stat-earnings {
    font-size: var(--font-size-base);
    color: var(--color-success);
    font-weight: 500;
}

/* Section Header */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
    margin-top: var(--space-xl);
}

.section-header h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    letter-spacing: -0.02em;
}

/* Calendar Container */
.calendar-container {
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-xl);
    border: 1px solid var(--color-border-light);
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.calendar-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.calendar-nav {
    display: flex;
    gap: var(--space-sm);
}

.calendar-nav button {
    background-color: var(--color-surface-secondary);
    border: 1px solid var(--color-border);
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.calendar-nav button:hover {
    background-color: var(--color-border);
}

.calendar-nav button:active {
    transform: scale(0.95);
}

.calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: var(--space-xs);
    margin-bottom: var(--space-sm);
}

.calendar-weekday {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-text-tertiary);
    text-align: center;
    padding: var(--space-xs);
}

.calendar-days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: var(--space-xs);
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
    position: relative;
    background-color: var(--color-surface-secondary);
    border: 2px solid transparent;
    font-weight: 500;
    min-height: 44px;
}

.calendar-day > div:first-child {
    cursor: pointer;
}

.calendar-day:hover {
    background-color: var(--color-border);
    transform: scale(1.08);
    box-shadow: var(--shadow-sm);
}

.calendar-day:active {
    transform: scale(1.02);
}

.calendar-day.other-month {
    color: var(--color-text-tertiary);
    opacity: 0.4;
}

.calendar-day.today {
    background-color: var(--color-primary);
    color: white;
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(0, 122, 255, 0.3);
}

.calendar-day.selected {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(0, 122, 255, 0.2);
    font-weight: 700;
}

.calendar-day.has-entries {
    border-color: var(--color-success);
}

.calendar-day.in-period {
    background-color: var(--period-color-0);
    color: white;
}

.calendar-day .work-indicator {
    position: absolute;
    bottom: 4px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--color-success);
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

/* Entries List */
.entries-list {
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    margin-bottom: var(--space-xl);
    box-shadow: var(--shadow-sm);
}

.entry-item {
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-border);
    transition: background-color var(--transition-fast);
}

.entry-item:last-child {
    border-bottom: none;
}

.entry-item:hover {
    background-color: var(--color-surface-secondary);
}

.entry-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xs);
}

.entry-date {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.entry-status {
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    background-color: var(--color-success);
    color: white;
}

.entry-status.active {
    background-color: var(--color-warning);
}

.entry-times {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-xs);
    font-size: var(--font-size-sm);
}

.entry-time {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--color-text-secondary);
}

.entry-stats {
    display: flex;
    gap: var(--space-lg);
    font-size: var(--font-size-base);
}

.entry-hours {
    font-weight: 600;
    color: var(--color-text-primary);
}

.entry-earnings {
    font-weight: 600;
    color: var(--color-success);
}

.entry-notes {
    margin-top: var(--space-sm);
    padding: var(--space-sm);
    background-color: var(--color-surface-secondary);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    font-style: italic;
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
}

.modal.active {
    display: flex;
    animation: modalFadeIn var(--transition-base) ease-out;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    animation: overlayFadeIn var(--transition-base) ease-out;
}

@keyframes overlayFadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal-content {
    position: relative;
    background-color: var(--color-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: modalSlideUp var(--transition-slow) cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes modalSlideUp {
    from {
        transform: translateY(100px) scale(0.95);
        opacity: 0;
    }
    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

.modal-large {
    max-width: 700px;
}

.modal-xlarge {
    max-width: 1200px;
    width: 95%;
}

.modal-xlarge .modal-body {
    max-height: calc(85vh - 100px);
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
}

.modal-small {
    max-width: 400px;
}

.modal-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-body {
    padding: var(--space-lg);
    overflow-y: auto;
    flex: 1;
}

/* Alert Modal Styles */
.alert-modal .modal-content {
    max-width: 360px;
}

.alert-content {
    text-align: center;
    padding: var(--space-xl) !important;
}

.alert-icon {
    margin: 0 auto var(--space-lg);
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface-secondary);
}

.alert-icon svg {
    color: var(--color-primary);
}

.alert-icon.warning svg {
    color: var(--color-warning);
}

.alert-icon.danger svg {
    color: var(--color-danger);
}

.alert-icon.success svg {
    color: var(--color-success);
}

.alert-content h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-md);
}

.alert-content p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.6;
}

.alert-actions {
    display: flex;
    gap: var(--space-md);
}

.alert-actions button {
    flex: 1;
}

/* Activity List */
.activity-list {
    max-height: 60vh;
    overflow-y: auto;
}

.activity-item {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-border);
    transition: background-color var(--transition-fast);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-item:hover {
    background-color: var(--color-surface-secondary);
}

.activity-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background-color: var(--color-surface-secondary);
}

.activity-icon.clock-in {
    background-color: rgba(52, 199, 89, 0.1);
    color: var(--color-success);
}

.activity-icon.clock-out {
    background-color: rgba(255, 59, 48, 0.1);
    color: var(--color-danger);
}

.activity-icon.period {
    background-color: rgba(0, 122, 255, 0.1);
    color: var(--color-primary);
}

.activity-icon.settings {
    background-color: rgba(255, 149, 0, 0.1);
    color: var(--color-warning);
}

.activity-content {
    flex: 1;
}

.activity-title {
    font-weight: 600;
    margin-bottom: 4px;
}

.activity-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-bottom: 4px;
}

.activity-time {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

/* Forms */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xs);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-surface);
    transition: all var(--transition-fast);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

.form-group small {
    display: block;
    margin-top: var(--space-xs);
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
    cursor: pointer;
    font-weight: normal;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    cursor: pointer;
}

.checkbox-label span {
    font-size: var(--font-size-base);
    color: var(--color-text);
}

.form-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: flex-end;
    margin-top: var(--space-xl);
}

.form-section {
    margin-bottom: var(--space-xl);
}

.form-section h2 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--color-border);
}

/* Period Preview */
.period-preview {
    background-color: var(--color-surface-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-top: var(--space-md);
}

.period-preview-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    text-align: center;
}

.preview-stat-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-xs);
}

.preview-stat-value {
    font-size: var(--font-size-lg);
    font-weight: 700;
}

/* Periods List */
.periods-list {
    margin-top: var(--space-lg);
}

.period-item {
    background-color: var(--color-surface-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-bottom: var(--space-md);
    border-left: 4px solid var(--color-primary);
    transition: all var(--transition-fast);
}

.period-item:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-sm);
}

.period-dates {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.period-stats {
    display: flex;
    gap: var(--space-lg);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
    flex-wrap: wrap;
}

.period-actions {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
    flex-wrap: wrap;
}

.period-actions button {
    font-size: var(--font-size-sm);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 6px;
}

.period-actions svg {
    width: 16px;
    height: 16px;
}

.btn-edit {
    background-color: var(--color-primary);
    color: white;
    border: none;
    cursor: pointer;
    font-family: var(--font-family);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.btn-edit:hover {
    background-color: var(--color-primary-dark);
    transform: scale(1.02);
}

.btn-edit:active {
    transform: scale(0.97);
}

.btn-download {
    background-color: var(--color-warning);
    color: white;
    border: none;
    cursor: pointer;
    font-family: var(--font-family);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.btn-download:hover {
    background-color: #E68900;
    transform: scale(1.02);
}

.btn-download:active {
    transform: scale(0.97);
}

.btn-share {
    background-color: var(--color-success);
    color: white;
    border: none;
    cursor: pointer;
    font-family: var(--font-family);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.btn-share:hover {
    background-color: #2DB350;
    transform: scale(1.02);
}

.btn-share:active {
    transform: scale(0.97);
}

.btn-delete {
    background-color: var(--color-danger);
    color: white;
    border: none;
    cursor: pointer;
    font-family: var(--font-family);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.btn-delete:hover {
    background-color: #E6332A;
    transform: scale(1.02);
}

.btn-delete:active {
    transform: scale(0.97);
}

/* Loading States */
.loading-shimmer {
    background: linear-gradient(
        90deg,
        var(--color-surface-secondary) 0%,
        var(--color-border) 50%,
        var(--color-surface-secondary) 100%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s linear infinite;
    border-radius: var(--radius-md);
    height: 100px;
}

@keyframes shimmer {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

.loading-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(
        90deg,
        transparent,
        var(--color-primary),
        transparent
    );
    background-size: 50% 100%;
    animation: loading 3s linear infinite;
    z-index: 9999;
}

@keyframes loading {
    0% {
        background-position: -100% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: var(--space-lg);
    right: var(--space-lg);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.toast {
    background-color: var(--color-surface);
    color: var(--color-text-primary);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    min-width: 300px;
    display: flex;
    align-items: center;
    gap: var(--space-md);
    animation: toastSlideIn var(--transition-slow) cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes toastSlideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast.toast-success {
    border-left: 4px solid var(--color-success);
}

.toast.toast-error {
    border-left: 4px solid var(--color-danger);
}

.toast.toast-warning {
    border-left: 4px solid var(--color-warning);
}

.toast-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.toast-message {
    flex: 1;
    font-size: var(--font-size-sm);
}

/* Alerts */
.alert {
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
    font-size: var(--font-size-sm);
}

.alert-error {
    background-color: #FFEBEE;
    color: #C62828;
    border-left: 4px solid var(--color-danger);
}

.alert-success {
    background-color: #E8F5E9;
    color: #2E7D32;
    border-left: 4px solid var(--color-success);
}

.alert-warning {
    background-color: #FFF3E0;
    color: #E65100;
    border-left: 4px solid var(--color-warning);
}

/* Auth Pages */
.auth-container,
.install-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
}

.auth-card,
.install-card {
    background-color: var(--color-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--space-2xl);
    max-width: 450px;
    width: 100%;
}

.auth-header,
.install-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.auth-header h1,
.install-header h1 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-sm);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.auth-header p,
.install-header p {
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
}

.auth-footer {
    text-align: center;
    margin-top: var(--space-lg);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.auth-footer a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* ================================
   Pay Period Selector Section
   ================================ */

/* Pay Period Card - Modern Design */
.period-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    box-shadow: var(--shadow-md);
    color: white;
}

.period-card-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.period-icon {
    font-size: 2rem;
    background: rgba(255, 255, 255, 0.2);
    width: 50px;
    height: 50px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.period-title-section {
    flex: 1;
    min-width: 0;
}

.period-title-section h3 {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 600;
    color: white;
}

.period-dates-display {
    margin: var(--space-xs) 0 0 0;
    font-size: 0.875rem;
    opacity: 0.9;
    color: rgba(255, 255, 255, 0.95);
}

.period-card-header .btn-icon {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    transition: all 0.2s ease;
}

.period-card-header .btn-icon:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.05);
}

.period-selector-wrapper {
    margin-bottom: var(--space-md);
}

.period-select-modern {
    width: 100%;
    padding: var(--space-md);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-md);
    font-size: var(--font-size-md);
    font-weight: 500;
    color: white;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    cursor: pointer;
    transition: all 0.2s ease;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23fff' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-md) center;
    padding-right: calc(var(--space-md) + 24px);
}

.period-select-modern option {
    color: var(--color-text-primary);
    background: var(--color-surface);
}

.period-select-modern:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.6);
    background: rgba(255, 255, 255, 0.15);
}

.period-select-modern:hover {
    border-color: rgba(255, 255, 255, 0.5);
    background: rgba(255, 255, 255, 0.12);
}

.period-progress-container {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    backdrop-filter: blur(10px);
}

.period-progress-bar-bg {
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    height: 8px;
    overflow: hidden;
    margin-bottom: var(--space-sm);
}

.period-progress-bar {
    background: linear-gradient(90deg, #4ade80 0%, #22c55e 100%);
    height: 100%;
    border-radius: var(--radius-sm);
    transition: width 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.period-progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.95);
}

/* Mobile Period Switcher */
.mobile-period-switcher {
    display: none; /* Hidden by default, shown on mobile */
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
    padding: 4px;
    background: var(--surface-secondary);
    border-radius: var(--border-radius-lg);
}

.period-switch-btn {
    flex: 1;
    padding: 12px 16px;
    background: transparent;
    border: none;
    border-radius: var(--border-radius-md);
    color: var(--text-secondary);
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.period-switch-btn.active {
    background: var(--surface);
    color: var(--text-primary);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.period-switch-btn .switch-indicator {
    display: none;
}

.period-switch-btn.active .switch-indicator {
    display: block;
    position: absolute;
    bottom: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-period-switcher {
        display: flex; /* Show on mobile */
    }
    
    .container {
        padding: var(--space-sm);
        max-width: 100%;
        overflow-x: hidden;
    }
    
    .header {
        padding: var(--space-sm);
        flex-wrap: nowrap;
    }
    
    .header-title {
        font-size: var(--font-size-lg);
    }
    
    .header-actions {
        gap: var(--space-xs);
    }
    
    .btn-icon {
        width: 40px;
        height: 40px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
    }
    
    .modal-content {
        max-width: 100%;
        width: 100%;
        border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        margin: auto 0 0 0;
        max-height: 92vh;
        animation: modalSlideUpMobile var(--transition-slow) cubic-bezier(0.34, 1.56, 0.64, 1);
    }
    
    @keyframes modalSlideUpMobile {
        from {
            transform: translateY(100%);
        }
        to {
            transform: translateY(0);
        }
    }
    
    .modal-large {
        max-width: 100%;
        width: 100%;
    }
    
    .modal-xlarge {
        max-width: 100%;
        width: 100%;
    }
    
    .modal-body {
        max-height: calc(92vh - 80px);
        overflow-y: auto;
        padding: var(--space-md);
        -webkit-overflow-scrolling: touch;
    }
    
    .modal-header {
        padding: var(--space-md) var(--space-lg);
        flex-shrink: 0;
    }
    
    .modal-header h2 {
        font-size: 1.25rem;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-actions button {
        width: 100%;
    }
    
    .toast-container {
        left: var(--space-sm);
        right: var(--space-sm);
        top: auto;
        bottom: var(--space-lg);
    }
    
    .toast {
        min-width: auto;
        width: 100%;
    }
    
    .clock-buttons-grid {
        gap: var(--space-sm);
        grid-template-columns: 1fr;
    }
    
    .btn-clock {
        min-height: 100px;
        padding: var(--space-md);
    }
    
    .btn-clock span {
        font-size: var(--font-size-base);
    }
    
    .clock-time {
        font-size: var(--font-size-lg);
    }
    
    /* Tables mobile */
    .table-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    table {
        min-width: 100%;
        font-size: var(--font-size-sm);
    }
    
    td, th {
        padding: var(--space-xs) var(--space-sm);
    }
    
    /* Analytics mobile */
    .comparison-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .comparison-item {
        text-align: left;
    }
    
    .comparison-stat {
        padding: var(--space-sm);
    }
    
    .comparison-stat-value {
        font-size: 1.1rem;
        word-break: normal;
        overflow-wrap: normal;
    }
    
    .comparison-period {
        font-size: 0.813rem;
    }

    /* Hide/show periods based on switcher */
    .comparison-grid .comparison-item:first-child {
        display: block;
    }
    
    .comparison-grid .comparison-item:last-child {
        display: none;
    }
    
    .comparison-grid.show-previous .comparison-item:first-child {
        display: none;
    }
    
    .comparison-grid.show-previous .comparison-item:last-child {
        display: block;
    }
    
    .comparison-divider {
        display: none; /* Hide divider on mobile */
    }
    
    .comparison-card {
        padding: var(--space-md);
    }
    
    .comparison-card h3 {
        font-size: 1.1rem;
        margin-bottom: var(--space-md);
    }
    
    .comparison-stats {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-sm);
    }
    
    .comparison-changes {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
    }
    
    .change-item {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        text-align: left;
        padding: var(--space-md);
    }
    
    .change-label {
        font-size: 0.875rem;
        margin-bottom: 0;
    }
    
    .change-value {
        align-items: flex-end;
    }
    
    .change-diff,
    .change-percent {
        font-size: 0.938rem;
    }
    
    /* CRITICAL: Stack charts vertically on mobile */
    .charts-grid {
        grid-template-columns: 1fr !important;
        gap: var(--space-md);
    }
    
    .chart-card {
        min-height: 280px;
        padding: var(--space-md);
    }
    
    .chart-card h3 {
        font-size: 1rem;
        margin-bottom: var(--space-md);
    }
    
    .chart-container {
        height: 240px;
    }
    
    .modal-xlarge {
        max-width: 95vw;
    }
    
    .modal-xlarge .modal-body {
        padding: var(--space-md);
        max-height: calc(90vh - 60px);
        overflow-y: auto;
    }
    
    .btn-clock svg {
        width: 24px;
        height: 24px;
    }
    
    .btn-clock .clock-time {
        font-size: var(--font-size-lg);
    }
    
    .period-actions {
        justify-content: stretch;
    }
    
    .period-actions button {
        flex: 1;
        justify-content: center;
        min-width: 0;
    }
    
    .calendar-days {
        gap: 4px;
    }
    
    .calendar-day {
        min-height: 40px;
        font-size: var(--font-size-xs);
    }
    
    .header-actions {
        gap: var(--space-xs);
    }
    
    .btn-icon {
        width: 40px;
        height: 40px;
    }
    
    .selected-day-banner {
        padding: var(--space-md);
    }
    
    .selected-day-info h3 {
        font-size: var(--font-size-base);
    }
    
    .selected-day-info p {
        font-size: var(--font-size-xs);
    }
    
    /* Pay Period Mobile */
    .period-card {
        padding: var(--space-md);
    }
    
    .period-card-header {
        gap: var(--space-sm);
    }
    
    .period-icon {
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }
    
    .period-title-section h3 {
        font-size: 1rem;
    }
    
    .period-dates-display {
        font-size: 0.813rem;
    }
    
    .period-select-modern {
        font-size: var(--font-size-sm);
        padding: var(--space-sm) var(--space-md);
    }
    
    .period-progress-container {
        padding: var(--space-sm);
    }
    
    .period-progress-info {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xs);
        font-size: 0.813rem;
    }
    
    /* Modal Mobile Optimization */
    .modal-content {
        max-width: 95vw;
        max-height: 90vh;
        margin: var(--space-sm);
    }
    
    .modal-large {
        max-width: 95vw;
    }
    
    .modal-xlarge {
        max-width: 95vw;
    }
    
    /* New Feature Modals Mobile */
    #trashModal .entries-list,
    #customReportModal .form-group,
    #manualEntryModal .form-group {
        font-size: var(--font-size-sm);
    }
    
    /* Form Grid Mobile */
    #customReportModal > .modal-body > div[style*="grid"],
    #manualEntryModal form > div[style*="grid"] {
        grid-template-columns: 1fr !important;
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-3xl: 28px;
        --font-size-4xl: 32px;
    }
    
    .header-section {
        flex-direction: row;
        align-items: center;
        gap: var(--space-md);
    }
    
    .app-title {
        font-size: var(--font-size-2xl);
    }
    
    .calendar-day {
        font-size: 13px;
        min-height: 42px;
        padding: var(--space-xs);
    }
    
    .calendar-days {
        gap: 5px;
    }
    
    .header-actions {
        gap: 10px;
        flex-wrap: nowrap;
    }
    
    .btn-icon {
        width: 44px;
        height: 44px;
        min-width: 44px;
    }
    
    .btn-icon svg {
        width: 20px;
        height: 20px;
    }
    
    .modal-body {
        padding: var(--space-md);
    }
    
    .modal-header {
        padding: var(--space-md);
    }
    
    .btn-clock {
        min-height: 100px;
        padding: var(--space-sm);
    }
    
    .btn-clock span {
        font-size: var(--font-size-sm);
    }
    
    .btn-clock .clock-time {
        font-size: var(--font-size-base);
    }
    
    .elapsed-value {
        font-size: var(--font-size-xl);
    }
    
    .stat-value {
        font-size: var(--font-size-xl);
    }
    
    .period-stats {
        flex-direction: column;
        gap: var(--space-xs);
    }
    
    .period-actions {
        flex-direction: column;
    }
    
    .period-actions button {
        width: 100%;
    }
    
    .alert-actions {
        flex-direction: column;
    }
    
    .alert-actions button {
        width: 100%;
    }
    
    /* Analytics Dashboard - Extra Mobile Optimization */
    .comparison-card {
        padding: var(--space-md);
        margin-bottom: var(--space-md);
    }
    
    .comparison-card h3 {
        font-size: 1rem;
    }
    
    .comparison-stats {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-sm);
    }
    
    .comparison-stat {
        padding: var(--space-sm);
    }
    
    .comparison-stat-label {
        font-size: 0.688rem;
    }
    
    .comparison-stat-value {
        font-size: 1.05rem;
    }
    
    .comparison-period {
        font-size: 0.75rem;
        word-break: normal;
    }
    
    .comparison-item {
        padding: 0;
    }
    
    .comparison-changes {
        gap: var(--space-sm);
    }
    
    .change-item {
        padding: var(--space-md);
        background: var(--color-surface-secondary);
        border-radius: var(--radius-md);
    }
    
    /* CRITICAL: Stack charts vertically on small mobile */
    .charts-grid {
        gap: var(--space-md);
        grid-template-columns: 1fr !important;
    }
    
    .chart-card {
        min-height: 260px;
        padding: var(--space-md);
    }
    
    .chart-card h3 {
        font-size: 0.938rem;
    }
    
    .chart-container {
        height: 220px;
    }
    
    .modal-xlarge .modal-body {
        padding: var(--space-md);
    }
    
    /* Extra small screens */
    .header-actions {
        flex-wrap: wrap;
    }
    
    .btn-icon {
        width: 36px;
        height: 36px;
    }
    
    .btn-icon svg {
        width: 18px;
        height: 18px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .clock-buttons-grid {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
    }
    
    .period-select {
        font-size: var(--font-size-sm);
        padding: var(--space-sm);
    }
}

/* Touch Optimization */
@media (hover: none) and (pointer: coarse) {
    .btn-icon,
    .btn-icon-sm,
    .calendar-day,
    button {
        min-height: 44px;
        min-width: 44px;
    }
    
    .btn-clock:hover {
        transform: none;
    }
    
    .btn-clock:active {
        transform: scale(0.96);
    }
    
    .calendar-day:hover {
        transform: none;
        background-color: var(--color-surface-secondary);
    }
    
    .calendar-day:active {
        transform: scale(0.95);
        background-color: var(--color-border);
    }
    
    /* Disable hover effects on touch devices */
    .entry-item:hover,
    .period-item:hover,
    .activity-item:hover {
        background-color: transparent;
        transform: none;
    }
    
    /* Add tap feedback */
    .entry-item:active,
    .period-item:active,
    .activity-item:active {
        background-color: var(--color-surface-secondary);
    }
}

/* ================================
   Analytics Dashboard
   ================================ */

.analytics-section {
    margin: var(--space-lg) 0;
}

/* Comparison Card */
.comparison-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--space-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.comparison-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-lg);
    color: var(--color-text-primary);
}

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
    align-items: start;
}

.comparison-item {
    text-align: center;
    min-width: 0;
}

.comparison-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-xs);
}

.comparison-period {
    font-size: 0.813rem;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-md);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.comparison-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.comparison-stat {
    background: var(--color-surface-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 0;
}

.comparison-stat-label {
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-xs);
    white-space: nowrap;
}

.comparison-stat-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-primary);
    word-break: break-word;
}

.comparison-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
}

.comparison-divider svg {
    opacity: 0.5;
}

.comparison-changes {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
}

.change-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md);
    background: var(--color-surface-secondary);
    border-radius: var(--radius-md);
}

.change-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.change-value {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.change-diff {
    font-size: 1.125rem;
    font-weight: 700;
}

.change-diff.positive {
    color: var(--color-success);
}

.change-diff.negative {
    color: var(--color-danger);
}

.change-percent {
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
    margin-top: 2px;
}

/* Charts Grid */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

.chart-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--color-border);
}

.chart-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--color-text-primary);
    flex-shrink: 0;
}

.chart-container {
    position: relative;
    height: 250px;
    width: 100%;
    flex-grow: 1;
    min-height: 0;
}

.chart-card canvas {
    max-width: 100%;
    max-height: 100%;
    width: 100% !important;
    height: auto !important;
}

/* Utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

hr {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: var(--space-lg) 0;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection */
::selection {
    background-color: var(--color-primary);
    color: white;
}

/* Focus Visible */
*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ================================
   ANALYTICS MODAL - MINIMALIST APPLE DESIGN
   ================================ */

/* Analytics Modal Container */
.analytics-modal {
    max-width: 600px;
}

.analytics-header {
    border-bottom: 1px solid var(--color-border);
    background: var(--color-surface);
    position: sticky;
    top: 0;
    z-index: 10;
}

.analytics-header h2 {
    font-size: 1.375rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.analytics-body {
    padding: 0;
    max-height: calc(90vh - 80px);
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
}

/* Period Selector - Segmented Control */
.analytics-period-selector {
    padding: var(--space-lg) var(--space-lg) var(--space-md);
    background: var(--color-surface);
}

.segmented-control {
    display: flex;
    background: var(--color-surface-secondary);
    border-radius: var(--radius-lg);
    padding: 3px;
    position: relative;
}

.segment {
    flex: 1;
    padding: 10px 16px;
    border: none;
    background: transparent;
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: calc(var(--radius-lg) - 3px);
    cursor: pointer;
    transition: color 0.2s ease;
    position: relative;
    z-index: 1;
}

.segment.active {
    background: var(--color-surface);
    color: var(--color-text-primary);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1),
                0 1px 2px rgba(0, 0, 0, 0.06);
}

.segment:active {
    transform: scale(0.98);
}

/* Period Info */
.analytics-period-info {
    padding: 0 var(--space-lg) var(--space-lg);
    text-align: center;
}

.period-dates {
    font-size: 0.9375rem;
    color: var(--color-text-tertiary);
    font-weight: 500;
}

/* Stats Grid */
.analytics-stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
    padding: 0 var(--space-lg) var(--space-lg);
}

.analytics-stat-card {
    background: var(--color-surface-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.analytics-stat-card:active {
    transform: scale(0.98);
}

.stat-icon {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
    filter: grayscale(0.2);
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-xs);
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 0.8125rem;
    color: var(--color-text-tertiary);
    font-weight: 500;
    line-height: 1.2;
}

/* Comparison Section */
.analytics-comparison {
    margin: 0 var(--space-lg) var(--space-lg);
    padding: var(--space-lg);
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.08) 0%, rgba(0, 122, 255, 0.03) 100%);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0, 122, 255, 0.12);
}

.comparison-header {
    text-align: center;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
}

.comparison-metrics {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.comparison-metric {
    text-align: center;
}

.metric-label {
    display: block;
    font-size: 0.8125rem;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-xs);
    font-weight: 500;
}

.metric-change {
    display: block;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.metric-change.positive {
    color: var(--color-success);
}

.metric-change.negative {
    color: var(--color-danger);
}

.metric-change.neutral {
    color: var(--color-text-tertiary);
}

/* Chart Selector */
.analytics-chart-selector {
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    background: var(--color-surface);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.chart-tabs {
    display: flex;
    gap: var(--space-xs);
    min-width: min-content;
}

.chart-tab {
    padding: 8px 16px;
    border: none;
    background: transparent;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    flex-shrink: 0;
}

.chart-tab:hover {
    background: var(--color-surface-secondary);
}

.chart-tab.active {
    background: var(--color-primary);
    color: white;
}

.chart-tab:active {
    transform: scale(0.96);
}

/* Chart Wrapper */
.analytics-chart-wrapper {
    position: relative;
    padding: var(--space-lg);
    min-height: 300px;
}

.analytics-chart-card {
    display: none;
    width: 100%;
    height: 100%;
}

.analytics-chart-card.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.analytics-chart-card canvas {
    width: 100% !important;
    height: auto !important;
    max-height: 300px;
}

/* Mobile Optimizations */
@media (max-width: 768px) {
    .analytics-modal {
        max-width: 100%;
        width: 100%;
        margin: 0;
        border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        max-height: 95vh;
    }
    
    .analytics-body {
        max-height: calc(95vh - 60px);
        padding-bottom: var(--space-xl);
    }
    
    .analytics-header h2 {
        font-size: 1.25rem;
    }
    
    .analytics-period-selector {
        padding: var(--space-md);
    }
    
    .analytics-period-info {
        padding: 0 var(--space-md) var(--space-md);
    }
    
    .analytics-stats-grid {
        padding: 0 var(--space-md) var(--space-md);
        gap: var(--space-xs);
    }
    
    .analytics-stat-card {
        padding: var(--space-md);
    }
    
    .stat-icon {
        font-size: 1.75rem;
        margin-bottom: var(--space-xs);
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
    
    .stat-label {
        font-size: 0.75rem;
    }
    
    .analytics-comparison {
        margin: 0 var(--space-md) var(--space-md);
        padding: var(--space-md);
    }
    
    .analytics-chart-selector {
        padding: var(--space-sm) var(--space-md);
    }
    
    .chart-tabs {
        gap: 6px;
    }
    
    .chart-tab {
        padding: 6px 12px;
        font-size: 0.8125rem;
    }
    
    .analytics-chart-wrapper {
        padding: var(--space-md);
        min-height: 250px;
    }
    
    .analytics-chart-card canvas {
        max-height: 250px;
    }
}

/* Extra small devices */
@media (max-width: 480px) {
    .analytics-stats-grid {
        grid-template-columns: 1fr;
    }
    
    .analytics-stat-card {
        display: flex;
        align-items: center;
        text-align: left;
        gap: var(--space-md);
    }
    
    .stat-icon {
        font-size: 2rem;
        margin-bottom: 0;
        flex-shrink: 0;
    }
    
    .analytics-stat-card > div:last-child {
        flex: 1;
    }
    
    .stat-value {
        font-size: 1.375rem;
        margin-bottom: 2px;
    }
    
    .comparison-metrics {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
    }
}

/* ================================
   Minimalist Icon System
   ================================ */

.icon-minimal {
    font-size: 20px;
    font-style: normal;
    display: inline-block;
    line-height: 1;
    opacity: 0.85;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.icon {
    font-size: 22px;
    font-style: normal;
    display: inline-block;
    line-height: 1;
    margin-right: var(--space-xs);
}

.icon-logo {
    font-size: 32px;
    margin-right: 8px;
    vertical-align: middle;
}

.clock-icon {
    font-size: 32px;
    font-style: normal;
    display: block;
    line-height: 1;
    opacity: 0.9;
}

/* Minimalist Button Styles */
.btn-icon-minimal {
    background: transparent;
    border: none;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.btn-icon-minimal:hover {
    background-color: rgba(0, 0, 0, 0.05);
    transform: scale(1.05);
}

.btn-icon-minimal:active {
    transform: scale(0.95);
    background-color: rgba(0, 0, 0, 0.1);
}

.btn-secondary-minimal {
    background-color: var(--color-surface);
    color: var(--color-primary);
    padding: 8px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.btn-secondary-minimal:hover {
    background-color: var(--color-surface-secondary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary-minimal:active {
    transform: scale(0.97);
}

.btn-text-minimal {
    background: transparent;
    border: none;
    color: var(--color-primary);
    padding: 8px 12px;
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    -webkit-tap-highlight-color: transparent;
}

.btn-text-minimal:hover {
    opacity: 0.7;
}

.btn-text-minimal:active {
    transform: scale(0.95);
}

/* ================================
   Pay Period Section
   ================================ */

.pay-period-section {
    margin-bottom: var(--space-xl);
}

.period-info-card {
    background-color: var(--color-surface);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}

.period-selector-container {
    margin-bottom: var(--space-lg);
}

.period-select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 500;
    background-color: var(--color-surface);
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%23000000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

.period-select:hover {
    border-color: var(--color-primary);
    background-color: var(--color-surface-secondary);
}

.period-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

.period-dates {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 12px 16px;
    background-color: var(--color-surface-secondary);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
}

.period-progress {
    margin-bottom: var(--space-lg);
    padding: var(--space-md);
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.05) 0%, rgba(0, 122, 255, 0.02) 100%);
    border-radius: var(--radius-md);
    border: 1px solid rgba(0, 122, 255, 0.1);
}

.progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-sm);
    font-size: var(--font-size-sm);
}

.progress-text {
    font-weight: 600;
    color: var(--color-text-primary);
}

.progress-days {
    font-weight: 500;
    color: var(--color-text-tertiary);
}

.progress-bar-container {
    height: 8px;
    background-color: rgba(0, 0, 0, 0.05);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary) 0%, rgba(0, 122, 255, 0.7) 100%);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

/* Period Earnings Grid */
.period-earnings-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
}

.period-earning-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background-color: var(--color-surface-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

.period-earning-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.earning-icon {
    font-size: 32px;
    line-height: 1;
    flex-shrink: 0;
}

.earning-content {
    flex: 1;
    min-width: 0;
}

.earning-label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-tertiary);
    margin-bottom: 4px;
}

.earning-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 2px;
}

.earning-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* Section Header Updates */
.section-header h2 {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

/* Responsive Pay Period Section */
@media (max-width: 768px) {
    .period-earnings-grid {
        grid-template-columns: 1fr;
    }
    
    .earning-value {
        font-size: var(--font-size-xl);
    }
    
    .earning-icon {
        font-size: 28px;
    }
}

@media (min-width: 769px) {
    .period-earnings-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

/* Clock Button Icon Updates */
.btn-clock .clock-icon {
    transition: transform var(--transition-fast);
}

.btn-clock:hover .clock-icon {
    transform: scale(1.1);
}

.btn-clock:active .clock-icon {
    transform: scale(0.95);
}