:root {
    /* Primary Colors */
    --tracker-primary: #2563eb;
    --tracker-primary-dark: #1d4ed8;
    --tracker-primary-light: #dbeafe;
    --tracker-primary-hover: #1d4ed8;
    --tracker-primary-shadow: rgb(37 99 235 / 25%);
    
    /* Semantic Colors */
    --tracker-success: #10b981;
    --tracker-success-dark: #059669;
    --tracker-warning: #f59e0b;
    --tracker-warning-dark: #d97706;
    --tracker-danger: #ef4444;
    --tracker-danger-dark: #dc2626;
    --tracker-info: #3b82f6;
    
    /* Surface Colors */
    --tracker-surface: #ffffff;
    --tracker-surface-muted: #f8fafc;
    --tracker-surface-elevated: #ffffff;
    --tracker-background: #f1f5f9;
    --tracker-secondary-bg: #e2e8f0;
    
    /* Border Colors */
    --tracker-border: #e2e8f0;
    --tracker-border-light: #f1f5f9;
    --tracker-border-dark: #cbd5e1;
    
    /* Text Colors */
    --tracker-text-main: #0f172a;
    --tracker-text-muted: #64748b;
    --tracker-text-light: #94a3b8;
    --tracker-text-inverse: #ffffff;
    
    /* Shadow System */
    --tracker-shadow-soft: 0 20px 45px rgba(15, 23, 42, 0.08);
    --tracker-shadow-sm: 0 1px 2px rgb(15 23 42 / 0.08);
    --tracker-shadow-md: 0 4px 12px rgb(15 23 42 / 0.08);
    --tracker-shadow-lg: 0 12px 24px rgb(15 23 42 / 0.12);
    --tracker-shadow-xl: 0 20px 25px rgb(15 23 42 / 0.1);
    
    /* Border Radius */
    --tracker-radius-sm: 0.5rem;
    --tracker-radius-md: 1rem;
    --tracker-radius-lg: 1.5rem;
    --tracker-radius-xl: 2rem;
    --tracker-radius-full: 9999px;
    
    /* Legacy Variables */
    --primary-color: var(--tracker-primary);
    --primary-color-light: var(--tracker-primary-light);
    --surface-color: var(--tracker-surface);
    --light-bg: var(--tracker-background);
    --border-color: var(--tracker-border);
    --text-primary: var(--tracker-text-main);
    --text-secondary: var(--tracker-text-muted);
    --secondary-color: var(--tracker-text-muted);
    --success-color: var(--tracker-success);
    --info-color: var(--tracker-info);
    --warning-color: var(--tracker-warning);
    --danger-color: var(--tracker-danger);
    --dark-text: var(--tracker-text-main);
    --border-radius: var(--tracker-radius-lg);
    --shadow: var(--tracker-shadow-md);
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Angle Converter Variables (for educational content styling) */
    --angle-primary: #2563eb;
    --angle-primary-dark: #1d4ed8;
    --angle-accent: #0ea5e9;
    --angle-surface: #ffffff;
    --angle-border: #e2e8f0;
    --angle-text: #0f172a;
    --angle-muted: #64748b;
    --angle-success: #22c55e;
    --angle-radius-lg: 1.5rem;
    --angle-radius-md: 1rem;
    --angle-radius-sm: 0.75rem;
    --angle-shadow-sm: 0 8px 24px rgba(15, 23, 42, 0.08);
    --angle-shadow-lg: 0 30px 60px rgba(37, 99, 235, 0.12);


    /* related to and faqs component variables */
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --border: #e2e8f0;
    --surface: #ffffff;
    --shadow-soft: 0 20px 45px rgba(15, 23, 42, 0.08);
    --surface-muted: #f4f6fb;
    --text-main: #0f172a;
    --text-muted: #64748b;
}

.work-time-tracker-page {
    padding: 2rem 0;
}

.tracker-intro {
    margin-bottom: 2rem;
}

.tracker-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    color: var(--tracker-text-main);
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.tracker-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--tracker-text-muted);
    margin-bottom: 1rem;
    max-width: 780px;
}

.tracker-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: flex-start;
    list-style: none;
    padding: 0;
    margin: 0;
}

.meta-chip {
    background: var(--tracker-surface);
    color: var(--tracker-text-main);
    padding: 0.5rem 1rem;
    border-radius: var(--tracker-radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    box-shadow: var(--tracker-shadow-sm);
    border: 1px solid var(--tracker-border);
}

.tracker-main {
    margin: 0 auto;
}

.tracker-card {
    background: var(--tracker-surface);
    border-radius: var(--tracker-radius-lg);
    box-shadow: var(--tracker-shadow-lg);
    padding: 2rem;
    margin-bottom: 2rem;
    border: 1px solid var(--tracker-border);
}

.tracker-layout {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 2rem;
    align-items: start;
}

.tracker-left-column {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.tracker-right-column {
    display: flex;
    flex-direction: column;
}

/* Timer Section */
.timer-section {
    text-align: center;
    padding: 2rem 0;
    border-bottom: 1px solid var(--tracker-border);
    margin-bottom: 2rem;
}

.timer-header {
    margin-bottom: 1.5rem;
}

.timer-status {
    font-size: 0.95rem;
    color: var(--tracker-text-muted);
    margin-bottom: 0.5rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.timer-display {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 700;
    color: var(--tracker-primary);
    font-variant-numeric: tabular-nums;
    line-height: 1;
    margin: 1rem 0;
}

.timer-controls {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.control-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--tracker-radius-md);
    cursor: pointer;
    transition: var(--transition);
    min-width: 120px;
    justify-content: center;
}

.control-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.control-btn:not(:disabled):hover {
    transform: translateY(-2px);
    box-shadow: var(--tracker-shadow-md);
}

.btn-start {
    background: var(--tracker-success);
    color: var(--tracker-text-inverse);
}

.btn-start:hover:not(:disabled) {
    background: var(--tracker-success-dark);
}

.btn-pause {
    background: var(--tracker-warning);
    color: var(--tracker-text-inverse);
}

.btn-pause:hover:not(:disabled) {
    background: var(--tracker-warning-dark);
}

.btn-reset {
    background: var(--tracker-text-muted);
    color: var(--tracker-text-inverse);
}

.btn-reset:hover:not(:disabled) {
    background: var(--tracker-text-light);
}

/* Input Section */
.input-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--tracker-text-main);
    font-size: 0.9375rem;
}

.label-title {
    flex: 1;
}

.tooltip {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.tooltip-trigger {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 1px solid var(--tracker-border);
    background: var(--tracker-surface);
    color: var(--tracker-text-muted);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: help;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.tooltip-trigger:hover {
    background: var(--tracker-primary);
    color: var(--tracker-text-inverse);
    border-color: var(--tracker-primary);
}

.tooltiptext {
    visibility: hidden;
    opacity: 0;
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--tracker-text-main);
    color: var(--tracker-text-inverse);
    text-align: center;
    padding: 0.75rem 1rem;
    border-radius: var(--tracker-radius-md);
    font-size: 0.875rem;
    font-weight: 400;
    white-space: nowrap;
    z-index: 1000;
    transition: opacity 0.3s;
    pointer-events: none;
    max-width: 250px;
    white-space: normal;
    box-shadow: var(--tracker-shadow-lg);
}

.tooltiptext::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--tracker-text-main);
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}

.tracker-input,
.tracker-select {
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--tracker-border);
    border-radius: var(--tracker-radius-md);
    background: var(--tracker-surface);
    color: var(--tracker-text-main);
    transition: var(--transition);
    font-family: inherit;
}

.tracker-input:focus,
.tracker-select:focus {
    outline: none;
    border-color: var(--tracker-primary);
    box-shadow: 0 0 0 3px var(--tracker-primary-shadow);
}

.tracker-input::placeholder {
    color: var(--tracker-text-light);
}

.color-input {
    height: 48px;
    cursor: pointer;
}

/* Tabs Section */
.tabs-header {
    display: flex;
    gap: 0.5rem;
    border-bottom: 2px solid var(--tracker-border);
    margin-bottom: .5rem;
    -webkit-overflow-scrolling: touch;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.25rem;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--tracker-text-muted);
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    position: relative;
    margin-bottom: -2px;
}

.tab-btn:hover {
    color: var(--tracker-primary);
    background: var(--tracker-surface-muted);
}

.tab-btn.active {
    color: var(--tracker-primary);
    border-bottom-color: var(--tracker-primary);
    font-weight: 600;
}

.tab-badge {
    background: var(--tracker-primary);
    color: var(--tracker-text-inverse);
    padding: 0.125rem 0.5rem;
    border-radius: var(--tracker-radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.tabs-content {
    min-height: 400px;
    max-height: 600px;
    overflow-y: auto;
    padding: 1rem 0;
}

.reports-section {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 2px solid var(--tracker-border);
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.panel-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--tracker-text-main);
    margin: 0;
}

.panel-badge {
    background: var(--tracker-primary-light);
    color: var(--tracker-primary);
    padding: 0.5rem 1rem;
    border-radius: var(--tracker-radius-md);
    font-weight: 600;
    font-size: 0.9375rem;
}

/* Entries List */
.entries-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.entry-item {
    background: var(--tracker-surface-muted);
    border: 1px solid var(--tracker-border);
    border-radius: var(--tracker-radius-md);
    padding: 1.25rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    transition: var(--transition);
}

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

.entry-info {
    flex: 1;
    min-width: 0;
}

.entry-project {
    font-weight: 600;
    color: var(--tracker-primary);
    margin-bottom: 0.25rem;
    font-size: 1rem;
}

.entry-task {
    color: var(--tracker-text-muted);
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.entry-time {
    color: var(--tracker-text-light);
    font-size: 0.8125rem;
}

.entry-duration {
    background: var(--tracker-primary);
    color: var(--tracker-text-inverse);
    padding: 0.375rem 0.75rem;
    border-radius: var(--tracker-radius-sm);
    font-weight: 600;
    font-size: 0.875rem;
    white-space: nowrap;
}

.entry-actions {
    display: flex;
    gap: 0.5rem;
}

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--tracker-text-muted);
}

.empty-state svg {
    margin: 0 auto 1rem;
    opacity: 0.5;
}

.empty-state p {
    margin: 0;
    font-size: 1rem;
}

/* Timesheet Filters */
.timesheet-filters {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.filter-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--tracker-text-main);
}

.filter-input,
.filter-select {
    padding: 0.75rem;
    border: 2px solid var(--tracker-border);
    border-radius: var(--tracker-radius-md);
    font-size: 0.9375rem;
    transition: var(--transition);
}

.filter-input:focus,
.filter-select:focus {
    outline: none;
    border-color: var(--tracker-primary);
    box-shadow: 0 0 0 3px var(--tracker-primary-shadow);
}

/* Table */
.table-container {
    overflow-x: auto;
    margin-bottom: 1.5rem;
    border-radius: var(--tracker-radius-md);
    border: 1px solid var(--tracker-border);
}

.timesheet-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--tracker-surface);
}

.timesheet-table thead {
    background: var(--tracker-surface-muted);
}

.timesheet-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--tracker-text-main);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--tracker-border);
}

.timesheet-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--tracker-border);
    color: var(--tracker-text-main);
    font-size: 0.9375rem;
}

.timesheet-table tbody tr:hover {
    background: var(--tracker-surface-muted);
}

.empty-state-cell {
    text-align: center;
    padding: 3rem 1rem;
}

.empty-state-cell .empty-state {
    padding: 0;
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background: var(--tracker-surface-muted);
    border: 1px solid var(--tracker-border);
    border-radius: var(--tracker-radius-md);
    padding: 1.5rem;
    transition: var(--transition);
}

.project-card:hover {
    box-shadow: var(--tracker-shadow-md);
    transform: translateY(-2px);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.project-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--tracker-primary);
    margin: 0;
}

.project-menu {
    position: relative;
}

.menu-btn {
    background: transparent;
    border: none;
    color: var(--tracker-text-muted);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: var(--tracker-radius-sm);
    transition: var(--transition);
}

.menu-btn:hover {
    background: var(--tracker-border);
    color: var(--tracker-text-main);
}

.project-description {
    color: var(--tracker-text-muted);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.project-stats {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--tracker-border);
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--tracker-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-value {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--tracker-text-main);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--tracker-surface-muted);
    border: 1px solid var(--tracker-border);
    border-radius: var(--tracker-radius-md);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition);
}

.stat-card:hover {
    box-shadow: var(--tracker-shadow-md);
    transform: translateY(-2px);
}

.stat-icon {
    width: 48px;
    height: 48px;
    background: var(--tracker-primary-light);
    color: var(--tracker-primary);
    border-radius: var(--tracker-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

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

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--tracker-text-main);
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--tracker-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Actions */
.panel-actions,
.reports-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 1.5rem;
}

.action-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    border: none;
    border-radius: var(--tracker-radius-md);
    cursor: pointer;
    transition: var(--transition);
}

.action-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--tracker-shadow-md);
}

.btn-primary {
    background: var(--tracker-primary);
    color: var(--tracker-text-inverse);
}

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

.btn-secondary {
    background: var(--tracker-surface);
    color: var(--tracker-text-main);
    border: 2px solid var(--tracker-border);
}

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

/* Copy and Share Actions */
.result-actions {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--tracker-border);
}

.copy-buttons-row {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.copy-buttons-row .copy-button {
    flex: 1 1 calc(33.333% - 0.5rem);
    min-width: 140px;
}

.copy-button {
    background: #f1f5f9;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #405063 !important;
    border: 1px solid #dde3e7;
    font-size: 14px;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    gap: 0.5rem;
}

.copy-button:hover {
    background: #e2e8f0;
    border-color: #94a3b8;
    transform: translateY(-1px);
}

.copy-button.copied {
    background: #10b981;
    border-color: #10b981;
    color: #ffffff !important;
}

.copy-button svg {
    width: 16px;
    height: 16px;
}

/* Share Container */
.share-container {
    background: rgba(241, 245, 249, 0.8);
    border-radius: var(--tracker-radius-md);
    padding: 1rem 1.25rem;
    border: 1px solid var(--tracker-border);
    margin-top: 1rem;
}

.share-title {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--tracker-text-main);
}

.share-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.5rem;
}

.share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.65rem 0.75rem;
    border-radius: 0.75rem;
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    color: #ffffff;
    transition: all 0.2s ease;
}

.share-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 20px rgba(15, 23, 42, 0.2);
    color: #ffffff;
}

.share-x {
    background: #111827;
}

.share-facebook {
    background: #1877f2;
}

.share-linkedin {
    background: #0a66c2;
}

.share-reddit {
    background: #ff4500;
}

.share-telegram {
    background: #229ed9;
}

.share-whatsapp {
    background: #25d366;
    color: #0f172a;
}

/* Modal */
.modal-content {
    border-radius: var(--tracker-radius-lg);
    border: 1px solid var(--tracker-border);
}

.modal-header {
    border-bottom: 1px solid var(--tracker-border);
    padding: 1.5rem;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--tracker-text-main);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    border-top: 1px solid var(--tracker-border);
    padding: 1.5rem;
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

/* Educational Content Section */
.angle-seo-section {
    padding: 2rem 0;
}

.angle-card {
    background: var(--angle-surface);
    border-radius: var(--angle-radius-lg);
    padding: clamp(2rem, 4vw, 3rem);
    box-shadow: var(--angle-shadow-sm);
    border: 1px solid var(--angle-border);
}

.angle-education-card h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.angle-education-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-main);
    margin-top: 2rem;
    margin-bottom: 1rem;
    line-height: 1.4;
}

.angle-education-card p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-main);
    margin-bottom: 1rem;
}

.angle-education-card a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s ease;
}

.angle-education-card a:hover {
    border-bottom-color: var(--primary);
}

/* Infographic styles */
.infographic-timeline {
    margin: 2rem 0;
    padding: 2rem;
    background: var(--surface-muted);
    border-radius: var(--radius-lg);
}

.infographic-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
    text-align: center;
    margin-bottom: 2rem;
}

.infographic-conversion-formula {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin: 2rem 0;
}

.infographic-conversion-formula > .infographic-title {
    grid-column: 1 / -1;
    margin-bottom: 0;
}

.formula-box {
    padding: 1.5rem;
    background: var(--surface-muted);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.formula-label {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.formula-content {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 0.75rem;
}

.formula-example {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* Responsive Design */
@media (max-width: 992px) {
    .tracker-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .work-time-tracker-page {
        padding: 1rem 0;
    }

    .tracker-card {
        padding: 1.5rem;
    }

    .timer-section {
        padding: 1.5rem 0;
    }

    .timer-display {
        font-size: 2.5rem;
    }

    .timer-controls {
        flex-direction: column;
    }

    .control-btn {
        width: 100%;
    }

    .input-section {
        grid-template-columns: 1fr;
    }

    .tabs-header {
        gap: 0.25rem;
    }

    .tab-btn {
        padding: 0.75rem 1rem;
        font-size: 0.875rem;
    }

    .timesheet-filters {
        grid-template-columns: 1fr;
    }

    .timesheet-table {
        font-size: 0.875rem;
    }

    .timesheet-table th,
    .timesheet-table td {
        padding: 0.75rem 0.5rem;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .panel-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .copy-button {
        width: 100%;
    }

    .infographic-conversion-formula {
        grid-template-columns: 1fr;
    }
    
    .infographic-timeline {
        padding: 1.5rem;
    }
    
    .angle-education-card h2 {
        font-size: 1.75rem;
    }
    
    .angle-education-card h3 {
        font-size: 1.25rem;
    }
}
@media (max-width: 480px) {
    .tracker-title {
        font-size: 1.75rem;
    }

    .tracker-subtitle {
        font-size: 0.9375rem;
    }

    .timer-display {
        font-size: 2rem;
    }

    .control-btn {
        padding: 0.75rem 1.25rem;
        font-size: 0.9375rem;
        min-width: auto;
    }
}

/* Accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus styles for keyboard navigation */
.control-btn:focus-visible,
.action-btn:focus-visible,
.tab-btn:focus-visible,
.tracker-input:focus-visible,
.tracker-select:focus-visible {
    outline: 2px solid var(--tracker-primary);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .timer-controls,
    .tabs-header,
    .panel-actions,
    .share-container {
        display: none;
    }

    .tracker-card {
        box-shadow: none;
        border: 1px solid #000;
    }
}