* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-dark: #0A0A0A;
    --bg-darker: #111111;
    --bg-layer: #141414;
    --accent-neon: #C7FF4A;
    --accent-neon-alt: #A7FF3F;
    --text-heading: #E5E5E5;
    --text-body: #9CA3AF;
    --text-muted: #6B7280;
    --card-bg: #141414;
    --border-color: #1F1F1F;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 4px 16px rgba(199, 255, 74, 0.08);
    --glow: 0 0 20px rgba(199, 255, 74, 0.15);
    --spacing-base: 24px;
    --spacing-lg: 36px;
    --radius: 12px;
    --radius-lg: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
    color: var(--text-body);
    line-height: 1.6;
    font-weight: 400;
    min-height: 100vh;
}

h1 {
    font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-weight: 800;
    font-size: 2.5rem;
    letter-spacing: -0.03em;
    color: var(--text-heading);
    line-height: 1.2;
}

h2 {
    font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-weight: 600;
    font-size: 1.75rem;
    letter-spacing: -0.02em;
    color: var(--text-heading);
    line-height: 1.3;
}

h3, h4, h5, h6 {
    font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--text-heading);
}

.navbar {
    background: rgba(20, 20, 20, 0.8);
    backdrop-filter: blur(10px);
    color: var(--text-heading);
    padding: var(--spacing-base) 0;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-heading);
    letter-spacing: -0.02em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0.5rem;
}

.nav-link {
    color: var(--text-body);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    transition: all 0.3s ease;
    font-size: 0.9375rem;
}

.nav-link:hover {
    background-color: rgba(199, 255, 74, 0.1);
    color: var(--accent-neon);
}

.nav-link.active {
    background-color: rgba(199, 255, 74, 0.15);
    color: var(--accent-neon);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-base);
}

.section {
    display: none;
    animation: fadeIn 0.3s ease-in;
}

.section.active {
    display: block;
}

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

h2 {
    font-size: 1.875rem;
    margin-bottom: var(--spacing-lg);
    color: var(--text-heading);
    font-weight: 600;
}

.race-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg) 0;
    background: transparent;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-heading);
}

.race-header h2 {
    font-size: 2.25rem;
    margin-bottom: 0.75rem;
    color: var(--accent-neon);
    font-weight: 800;
}

.race-date {
    font-size: 1.125rem;
    color: var(--text-body);
    font-weight: 400;
}

.runner-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-base);
    margin-bottom: var(--spacing-lg);
}

.card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
    margin-bottom: var(--spacing-base);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: var(--shadow-lg);
    border-color: rgba(199, 255, 74, 0.15);
}

.card h3 {
    margin-bottom: var(--spacing-base);
    color: var(--text-heading);
    font-size: 1.125rem;
    font-weight: 600;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--spacing-base);
    margin-bottom: var(--spacing-lg);
}

.stat-card-combined {
    grid-column: span 2;
}

.stat-card-individual {
    grid-column: span 1;
}

.stat-card-justin-start {
    grid-column-start: 1;
}

.stat-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: var(--spacing-base);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--glow);
    border-color: rgba(199, 255, 74, 0.3);
}

.stat-info h3 {
    font-size: 3rem;
    color: var(--accent-neon);
    margin: 0;
    font-weight: 800;
    font-family: 'Montserrat', sans-serif;
    line-height: 1;
}

.stat-info p {
    color: var(--text-muted);
    margin: 0;
    font-size: 0.75rem;
    font-weight: 300;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.dashboard-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

/* Weight Change Display */
.weight-change-display {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.weight-change-item {
    padding: 0.75rem var(--spacing-base);
    background: rgba(199, 255, 74, 0.05);
    border-radius: var(--radius);
    border-left: 3px solid var(--accent-neon);
    transition: all 0.3s ease;
}

.weight-change-item:hover {
    background: rgba(199, 255, 74, 0.1);
    border-left-color: var(--accent-neon);
}

.weight-change-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.weight-change-name {
    font-weight: 700;
    color: var(--text-heading);
    font-size: 1rem;
    text-transform: capitalize;
}

.weight-change-value {
    font-size: 1.25rem;
    font-weight: 700;
    font-family: 'Montserrat', sans-serif;
    color: var(--text-heading);
}

.weight-change-value.positive {
    color: var(--text-heading);
}

.weight-change-value.negative {
    color: var(--accent-neon);
}

.weight-change-details {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
}

.weight-detail {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.weight-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

.weight-number {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-heading);
}

.workout-display {
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 24px;
    min-height: 100px;
    border: 1px solid var(--border-color);
}

.workout-display .workout-item {
    padding: var(--spacing-base);
    margin-bottom: var(--spacing-base);
    background: rgba(199, 255, 74, 0.05);
    border-radius: var(--radius);
    border-left: 3px solid var(--accent-neon);
    transition: all 0.3s ease;
}

.workout-display .workout-item:hover {
    background: rgba(199, 255, 74, 0.08);
    border-left-color: var(--accent-neon);
}

.workout-display .workout-type {
    font-weight: 700;
    color: var(--accent-neon);
    margin-bottom: 0.25rem;
}

.workout-display .workout-details {
    color: var(--text-body);
    font-size: 0.875rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-date-indicator {
    font-size: 0.875rem;
    color: var(--text-body);
    margin-bottom: var(--spacing-base);
    padding: 0.75rem;
    background: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.form-date-indicator span {
    font-weight: 700;
    color: var(--accent-neon);
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-heading);
    font-weight: 600;
    font-size: 0.875rem;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 24px;
    font-size: 1rem;
    transition: all 0.2s;
    background: var(--card-bg);
    color: var(--text-heading);
    font-family: 'Inter', sans-serif;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-neon);
    box-shadow: 0 0 0 3px rgba(199, 255, 74, 0.1);
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 24px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    font-family: 'Inter', sans-serif;
}

.btn-primary {
    background: var(--accent-neon);
    color: var(--bg-dark);
}

.btn-primary:hover {
    background: var(--accent-neon-alt);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--card-bg);
    color: var(--text-heading);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(199, 255, 74, 0.1);
    border-color: var(--accent-neon);
}

.workout-history {
    max-height: 500px;
    overflow-y: auto;
}

.history-item {
    padding: var(--spacing-base);
    margin-bottom: var(--spacing-base);
    background: var(--card-bg);
    border-radius: var(--radius);
    border-left: 3px solid var(--accent-neon);
    transition: all 0.3s ease;
}

.history-item:hover {
    background: rgba(199, 255, 74, 0.05);
    border-left-color: var(--accent-neon);
}

.history-item .history-date {
    font-weight: 700;
    color: var(--text-heading);
    font-size: 0.9375rem;
}

.history-item .history-details {
    color: var(--text-body);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.progress-charts {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.progress-charts .chart-card {
    width: 100%;
}

.empty-state {
    text-align: center;
    color: var(--text-body);
    padding: 2rem;
    font-size: 0.9375rem;
}

/* Next Week Workouts */
.next-week-workouts {
    padding: 0.5rem 0;
}

.next-week-runner-group {
    margin-bottom: 1.5rem;
}

.next-week-runner-group:last-child {
    margin-bottom: 0;
}

.next-week-runner-name {
    font-weight: 700;
    color: var(--text-heading);
    font-size: 1rem;
    margin-bottom: 0.75rem;
    text-transform: capitalize;
}

.next-week-workout-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.next-week-workout-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem var(--spacing-base);
    background: rgba(199, 255, 74, 0.05);
    border-radius: var(--radius);
    border-left: 3px solid var(--accent-neon);
    transition: all 0.3s ease;
}

.next-week-workout-item:hover {
    background: rgba(199, 255, 74, 0.1);
    border-left-color: var(--accent-neon);
}

.next-week-workout-date {
    font-weight: 600;
    color: var(--text-heading);
    font-size: 0.9375rem;
}

.next-week-workout-distance {
    color: var(--accent-neon);
    font-weight: 600;
    font-size: 0.9375rem;
}

.loading {
    text-align: center;
    color: var(--text-body);
    padding: 2rem;
}

.chart-card {
    margin-bottom: var(--spacing-lg);
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.chart-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: rgba(199, 255, 74, 0.15);
}

.chart-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    position: relative;
}

.chart-card h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0;
    color: var(--text-heading);
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.chart-card .chart-legend {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-left: auto;
}

.chart-card .legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-body);
}

/* Legacy styles - keeping for backwards compatibility if needed */
.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.chart-header h3 {
    margin-bottom: 0;
}

.chart-legend {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-body);
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: 2px;
    display: inline-block;
}

.legend-line {
    width: 24px;
    height: 0;
    display: inline-block;
}

#combined-weekly-chart {
    width: 100%;
    max-width: 100%;
    height: 400px;
    cursor: pointer;
    display: block;
    margin: 0 auto;
}

/* Mobile optimizations for weekly chart */
@media (max-width: 768px) {
    #combined-weekly-chart {
        height: 350px;
    }

    .chart-card {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .chart-card canvas {
        min-width: 800px; /* Ensure chart is wide enough for 21 weeks */
    }
}

#sarah-weekly-chart,
#justin-weekly-chart,
#sarah-daily-chart,
#justin-daily-chart {
    width: 100%;
    height: 400px;
    display: block;
}

#sarah-daily-chart,
#justin-daily-chart {
    height: 250px;
}

/* Daily Race Track */
.daily-race-track {
    margin-bottom: var(--spacing-lg);
}

.race-track-header {
    margin-bottom: var(--spacing-base);
}

.race-track-stats {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-base);
}

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

.track-label span {
    color: var(--accent-neon);
    font-weight: 700;
}

.track-percentage {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 400;
}

.track-percentage span {
    color: var(--accent-neon);
    font-weight: 600;
}

.race-track-progress {
    margin-bottom: var(--spacing-lg);
}

.progress-bar-container {
    position: relative;
}

.progress-bar {
    position: relative;
    width: 100%;
    height: 18px;
    background: #1A1A1A;
    border-radius: 9999px;
    border: 1px solid var(--border-color);
    overflow: visible;
}

.progress-fill {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    background: var(--accent-neon);
    border-radius: 9999px;
    width: 0%;
    transition: width 1.5s ease-out;
}

.runner-emoji {
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%) scaleX(-1);
    font-size: 20px;
    z-index: 15;
    transition: left 1.5s ease-out;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
    left: 10px;
}

.finish-flag {
    position: absolute;
    right: -10px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 24px;
    z-index: 15;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
    animation: wave 2s ease-in-out infinite;
}

@keyframes wave {
    0%, 100% {
        transform: translateY(-50%) rotate(0deg);
    }
    25% {
        transform: translateY(-50%) rotate(-10deg);
    }
    75% {
        transform: translateY(-50%) rotate(10deg);
    }
}

.runner-marker {
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 12px;
    height: 12px;
    background: var(--accent-neon);
    border-radius: 50%;
    box-shadow: 0 0 12px rgba(199, 255, 74, 0.6), 0 0 24px rgba(199, 255, 74, 0.3);
    animation: pulse 2s ease-in-out infinite;
    z-index: 10;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 12px rgba(199, 255, 74, 0.6), 0 0 24px rgba(199, 255, 74, 0.3);
    }
    50% {
        box-shadow: 0 0 16px rgba(199, 255, 74, 0.8), 0 0 32px rgba(199, 255, 74, 0.4);
    }
}

.progress-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 400;
}

.daily-track-zoom {
    margin-top: var(--spacing-lg);
    overflow-x: auto;
    padding-bottom: 0.5rem;
}

.daily-ticks {
    display: flex;
    gap: 0.75rem;
    justify-content: space-between;
    min-width: 100%;
    padding: 0.5rem 0;
}

.daily-tick {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
    min-width: 40px;
}

.tick-line {
    width: 2px;
    margin-bottom: 0.5rem;
    border-radius: 2px;
}

.tick-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    margin-bottom: 0.25rem;
    box-shadow: 0 0 8px rgba(199, 255, 74, 0.5);
}

.tick-label {
    font-size: 0.75rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.tick-miles {
    font-size: 0.7rem;
    font-weight: 600;
}

.daily-tick.today .tick-line {
    box-shadow: 0 0 8px rgba(199, 255, 74, 0.4);
}

/* These styles are now included in the main mobile media query below */

.week-detail-card {
    margin-bottom: var(--spacing-lg);
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
}

.week-detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-base);
}

.week-detail-header h3 {
    margin-bottom: 0;
}

.btn-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    line-height: 1;
    transition: color 0.2s;
}

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

.daily-chart-container {
    text-align: center;
}

#combined-daily-chart {
    display: block;
    margin: 0 auto;
}

.daily-chart-container .chart-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    position: relative;
}

.daily-chart-container h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0;
    color: var(--text-heading);
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.daily-chart-container .chart-legend {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-left: auto;
}

.daily-chart-container .legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-body);
}

#combined-daily-chart {
    width: 100%;
    height: 250px;
}

/* Mobile optimizations for daily chart */
@media (max-width: 768px) {
    #combined-daily-chart {
        height: 300px;
    }

    .daily-chart-container .chart-header-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
        margin-bottom: 0.75rem;
    }

    .daily-chart-container h4 {
        position: static;
        transform: none;
        margin-bottom: 0.5rem;
        font-size: 1rem;
    }

    .daily-chart-container .chart-legend {
        margin-left: 0;
        gap: 1rem;
    }

    .daily-chart-container .legend-item {
        font-size: 0.8125rem;
    }

    /* Weekly chart header matches daily chart on mobile */
    .chart-card .chart-header-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
        margin-bottom: 0.75rem;
    }

    .chart-card h4 {
        position: static;
        transform: none;
        margin-bottom: 0.5rem;
        font-size: 1rem;
    }

    .chart-card .chart-legend {
        margin-left: 0;
        gap: 1rem;
    }

    .chart-card .legend-item {
        font-size: 0.8125rem;
    }
}

.weight-chart-card {
    padding: var(--spacing-lg);
}

.weight-chart-card canvas {
    max-height: 400px;
}

/* Reporting Section */
.reporting-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-base);
    margin-bottom: var(--spacing-lg);
}

/* workout-log-card takes up 2/3 of the space via grid-template-columns: 2fr 1fr */

.weight-scale-card-mini {
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    background: var(--card-bg);
    aspect-ratio: 5 / 4;
    transition: all 0.3s ease;
}

.weight-scale-card-mini:hover {
    box-shadow: var(--glow);
    border-color: rgba(199, 255, 74, 0.15);
}

.weight-form-mini {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-base);
    height: 100%;
    padding: var(--spacing-base);
}

.scale-display-container-mini {
    display: flex;
    justify-content: center;
    align-items: center;
    flex: 1;
    padding: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius);
    border: 1px solid rgba(199, 255, 74, 0.2);
    margin-bottom: var(--spacing-base);
}

.scale-display-mini {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.scale-input-mini {
    background: transparent;
    border: none;
    color: var(--accent-neon);
    font-size: 1.75rem;
    font-weight: 700;
    font-family: 'Montserrat', monospace;
    text-align: center;
    width: 100%;
    padding: 0;
    letter-spacing: 0.05em;
    text-shadow: 0 0 20px rgba(199, 255, 74, 0.15);
    -webkit-appearance: none;
    -moz-appearance: textfield;
    appearance: textfield;
}

.scale-input-mini::-webkit-inner-spin-button,
.scale-input-mini::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.scale-input-mini[type=number] {
    -moz-appearance: textfield;
    appearance: textfield;
}

.scale-input-mini::placeholder {
    color: rgba(199, 255, 74, 0.3);
    text-shadow: none;
}

.scale-input-mini:focus {
    outline: none;
    text-shadow: 0 0 20px rgba(199, 255, 74, 0.15);
}

.scale-unit-mini {
    color: var(--text-muted);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.scale-controls-mini {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
}

.scale-date-group-mini {
    margin-bottom: 0;
}

.scale-runner-group {
    margin-bottom: 0;
}

.scale-log-btn-mini {
    width: 100%;
}

/* Tablet Styles */
@media (max-width: 1024px) and (min-width: 769px) {
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .stat-card-combined {
        grid-column: span 1;
    }

    .dashboard-content {
        grid-template-columns: repeat(2, 1fr);
    }

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

/* Mobile Responsive Styles */
@media (max-width: 768px) {
    /* Navigation */
    .nav-container {
        flex-direction: column;
        gap: 1rem;
        padding: 0 1rem;
    }

    .logo {
        font-size: 1.25rem;
    }

    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.25rem;
    }

    .nav-link {
        padding: 0.5rem 0.75rem;
        font-size: 0.875rem;
    }

    /* Container and Spacing */
    .container {
        padding: var(--spacing-base) 1rem;
    }

    /* Typography */
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
        margin-bottom: var(--spacing-base);
    }

    .race-header {
        padding: var(--spacing-base) 0;
        margin-bottom: var(--spacing-base);
    }

    .race-header h2 {
        font-size: 1.75rem;
    }

    .race-date {
        font-size: 1rem;
    }

    .card h3 {
        font-size: 1rem;
    }

    /* Stats Grid - Maintain 5-row structure on mobile (matches desktop layout) */
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.5rem;
        grid-auto-flow: row;
    }

    /* Cards will naturally flow in document order with 3 columns */
    .stat-card-combined,
    .stat-card-individual {
        grid-column: span 1;
    }

    /* Ensure Justin's row starts on a new line */
    .stat-card-justin-start {
        grid-column-start: 1;
    }

    /* Smaller stat cards on mobile */
    .stat-card {
        padding: 0.75rem 0.5rem;
    }

    .stat-info h3 {
        font-size: 1.75rem;
    }

    .stat-info p {
        font-size: 0.65rem;
        line-height: 1.2;
    }

    /* Dashboard Content */
    .dashboard-content {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    /* Cards */
    .card {
        padding: var(--spacing-base);
        margin-bottom: var(--spacing-base);
    }

    /* Runner Stats */
    .runner-stats {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    /* Progress Charts */
    .progress-charts {
        grid-template-columns: 1fr;
        gap: var(--spacing-base);
    }

    /* Reporting Grid */
    .reporting-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-base);
    }

    /* Weight Change Details */
    .weight-change-details {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .weight-change-item {
        padding: 0.75rem 1rem;
    }

    /* Forms */
    .form-group {
        margin-bottom: 1rem;
    }

    .form-group input,
    .form-group select {
        padding: 0.625rem;
        font-size: 0.9375rem;
    }

    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.9375rem;
        width: 100%;
    }

    /* Charts */
    canvas {
        max-width: 100%;
        height: auto;
    }
    
    .chart-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .weight-chart-card {
        padding: var(--spacing-base);
    }

    .weight-chart-card canvas {
        max-height: 300px;
    }

    /* Workout History */
    .workout-history {
        max-height: 400px;
    }

    .history-item {
        padding: 0.75rem;
    }

    .history-item .history-date {
        font-size: 0.875rem;
    }

    .history-item .history-details {
        font-size: 0.8125rem;
    }

    /* Next Week Workouts */
    .next-week-runner-group {
        margin-bottom: 1rem;
    }

    .next-week-workout-item {
        padding: 0.625rem 1rem;
    }

    .next-week-workout-date {
        font-size: 0.875rem;
    }

    /* Daily Race Track */
    .race-track-stats {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .daily-ticks {
        gap: 0.5rem;
    }
    
    .daily-tick {
        min-width: 35px;
    }

    /* Week Detail Card */
    .week-detail-card {
        padding: var(--spacing-base);
    }

    .week-detail-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    /* Scale Card */
    .weight-scale-card-mini {
        aspect-ratio: auto;
        min-height: 300px;
    }

    .scale-input-mini {
        font-size: 1.5rem;
    }
}

/* Small Mobile Devices */
@media (max-width: 480px) {
    .container {
        padding: 1rem 0.75rem;
    }

    .nav-container {
        padding: 0 0.75rem;
    }

    .logo {
        font-size: 1.125rem;
    }

    .nav-link {
        padding: 0.4rem 0.6rem;
        font-size: 0.8125rem;
    }

    .race-header h2 {
        font-size: 1.5rem;
    }

    .stat-info h3 {
        font-size: 2rem;
    }

    .card {
        padding: 1rem;
    }

    .weight-change-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

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