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

:root {
    /* Softer dark palette - slate with slight blue undertone */
    --bg-primary: #0f1216;
    --bg-secondary: #141820;
    --bg-card: #1a1f28;
    --bg-elevated: #222832;
    --bg-hover: #2a313d;
    
    /* Softer text - not pure white */
    --text-primary: #e8eaed;
    --text-secondary: #9ca3ae;
    --text-muted: #5c6370;
    
    /* Muted teal accent - calm, modern, mature */
    --accent: #5b9a94;
    --accent-light: #7ab3ad;
    --accent-muted: rgba(91, 154, 148, 0.15);
    
    /* Semantic colors - desaturated */
    --success: #5b9a73;
    --success-muted: rgba(91, 154, 115, 0.15);
    --warning: #c9a35f;
    --caution: #c97a5f;
    
    /* Single accent system - variations for workout types */
    --workout-easy: #5b9a94;
    --workout-moderate: #5b8a9a;
    --workout-hard: #5b7a9a;
    --workout-rest: var(--text-muted);
    
    --border: rgba(255, 255, 255, 0.06);
    --border-light: rgba(255, 255, 255, 0.1);
    
    --radius: 14px;
    --radius-sm: 10px;
    --radius-xs: 6px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.5;
}

.app-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    padding-bottom: 60px;
}

/* Hero Section */
.hero {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    margin-bottom: 24px;
}

.hero-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 28px;
}

.hero-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.hero h1 {
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.hero-date {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Week Indicator */
.week-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px 24px;
    background: var(--bg-elevated);
    border-radius: var(--radius-sm);
}

.week-indicator-number {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1;
}

.week-indicator-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 4px;
}

/* Progress Section - Mileage Sparkline */
.mileage-sparkline {
    display: flex;
    align-items: flex-end;
    gap: 3px;
    height: 48px;
    padding-top: 20px;
    margin-top: 20px;
    border-top: 1px solid var(--border);
}

.sparkline-bar {
    flex: 1;
    background: var(--bg-elevated);
    border-radius: 2px;
    position: relative;
    min-height: 4px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.sparkline-bar-fill {
    background: var(--accent);
    border-radius: 2px;
    width: 100%;
    transition: height 0.3s ease;
}

.sparkline-bar.current {
    background: var(--bg-hover);
}

.sparkline-bar.current::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    background: var(--accent);
    border-radius: 50%;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 4px;
    background: var(--bg-card);
    padding: 4px;
    border-radius: var(--radius-sm);
    margin-bottom: 24px;
    border: 1px solid var(--border);
}

.tab {
    flex: 1;
    padding: 12px 20px;
    border: none;
    background: transparent;
    border-radius: var(--radius-xs);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

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

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

/* Views */
.view {
    display: none;
}

.view.active {
    display: block;
}

/* Phase Filter */
.phase-filter {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.filter-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.phase-select {
    flex: 1;
    max-width: 280px;
    padding: 10px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xs);
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
    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='%23a1a1aa' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
}

.phase-select:focus {
    outline: none;
    border-color: var(--accent);
}

/* Weeks Container */
.weeks-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Week Card */
.week-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: border-color 0.2s;
}

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

.week-card.current-week {
    border-color: var(--accent);
}

.week-header {
    padding: 16px 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}

.week-header:hover {
    background: var(--bg-elevated);
}

.week-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.week-number {
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-primary);
}

.week-badges {
    display: flex;
    gap: 8px;
}

.badge {
    font-size: 0.6rem;
    padding: 3px 8px;
    border-radius: 4px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.badge.current {
    background: var(--accent-muted);
    color: var(--accent-light);
}

.badge.recovery {
    background: rgba(201, 163, 95, 0.12);
    color: var(--warning);
}

.badge.peak {
    background: rgba(201, 122, 95, 0.12);
    color: var(--caution);
}

.badge.race {
    background: var(--success-muted);
    color: var(--success);
}

.week-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.week-dates {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.week-check-count {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
    min-width: 36px;
    text-align: right;
}

.expand-icon {
    color: var(--text-muted);
    font-size: 0.8rem;
    transition: transform 0.2s;
}

.week-card.expanded .expand-icon {
    transform: rotate(180deg);
}

.week-body {
    display: none;
    padding: 0 20px 20px;
}

.week-card.expanded .week-body {
    display: block;
}

/* Week Tip */
.week-tip {
    display: flex;
    gap: 12px;
    padding: 14px 16px;
    background: var(--bg-elevated);
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    border-left: 2px solid var(--accent);
}

.week-tip-icon {
    font-size: 1rem;
    flex-shrink: 0;
}

.week-tip-content {
    flex: 1;
}

.week-tip-title {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--accent-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.week-tip-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Week Stats Bar */
.week-stats {
    display: flex;
    gap: 20px;
    padding: 12px 16px;
    background: var(--bg-elevated);
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
}

.week-stat {
    display: flex;
    flex-direction: column;
}

.week-stat-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.week-stat-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

/* Workout Items */
.workouts-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.workout-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: var(--bg-elevated);
    border-radius: var(--radius-sm);
    transition: all 0.15s;
    cursor: pointer;
}

.workout-item:hover {
    background: var(--bg-hover);
}

.workout-item.completed {
    background: var(--success-muted);
}

.workout-checkbox {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 2px solid var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
    flex-shrink: 0;
}

.workout-item:hover .workout-checkbox {
    border-color: var(--accent);
}

.workout-item.completed .workout-checkbox {
    background: var(--success);
    border-color: var(--success);
}

.workout-checkbox::after {
    content: '✓';
    color: white;
    font-size: 12px;
    font-weight: bold;
    opacity: 0;
}

.workout-rest-spacer {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
}

.workout-item.rest-day {
    opacity: 0.6;
}

.workout-item.completed .workout-checkbox::after {
    opacity: 1;
}

.workout-day {
    width: 55px;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.8rem;
    flex-shrink: 0;
}

.workout-type {
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 0.6rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    flex-shrink: 0;
}

/* Unified workout type colors - variations of the accent */
.workout-type.easy { background: var(--accent-muted); color: var(--accent-light); }
.workout-type.tempo { background: rgba(91, 138, 154, 0.15); color: #7ab3c4; }
.workout-type.intervals { background: rgba(91, 122, 154, 0.15); color: #7a9fc4; }
.workout-type.long { background: var(--success-muted); color: var(--success); }
.workout-type.cross { background: rgba(156, 163, 174, 0.1); color: var(--text-secondary); }
.workout-type.rest { background: var(--bg-primary); color: var(--text-muted); }
.workout-type.race { background: var(--success-muted); color: var(--success); font-weight: 600; }

.workout-description {
    flex: 1;
    font-size: 0.85rem;
    color: var(--text-primary);
}

.workout-miles {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.workout-item.completed .workout-description,
.workout-item.completed .workout-miles {
    opacity: 0.5;
    text-decoration: line-through;
}

/* Skipped workout */
.workout-item.skipped {
    background: rgba(201, 122, 95, 0.08);
    opacity: 0.75;
}

.workout-item.skipped .workout-checkbox {
    background: transparent;
    border-color: var(--text-muted);
    border-style: dashed;
}

.workout-item.skipped .workout-checkbox::after {
    content: '–';
    opacity: 1;
    color: var(--text-muted);
}

.workout-item.skipped .workout-description,
.workout-item.skipped .workout-miles {
    text-decoration: line-through;
    opacity: 0.5;
}

/* Workout actions menu */
.workout-actions {
    display: none;
    gap: 4px;
    margin-left: auto;
}

/* Show on hover (desktop) or when item has state */
.workout-item.completed .workout-actions,
.workout-item.skipped .workout-actions {
    display: flex;
}

@media (hover: hover) {
    .workout-item:hover .workout-actions {
        display: flex;
    }
}

.workout-action-btn {
    padding: 4px 8px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 0.65rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.15s;
}

.workout-action-btn:hover {
    background: var(--bg-hover);
    color: var(--text-secondary);
}

.skip-btn:hover {
    border-color: rgba(201, 122, 95, 0.3);
    color: var(--caution);
}

.workout-action-btn.undo-btn {
    color: var(--text-secondary);
}

/* Stats Dashboard */
.stats-dashboard {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 14px;
}

.stat-icon {
    font-size: 1.5rem;
}

.stat-content {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.1;
}

.stat-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

/* Chart Cards */
.chart-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
}

.chart-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.chart-subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

/* Mileage Chart */
.chart-container {
    height: 200px;
    display: flex;
    align-items: flex-end;
    gap: 6px;
    padding: 10px 0;
}

.chart-bar-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.chart-bars {
    display: flex;
    gap: 2px;
    align-items: flex-end;
    height: 160px;
    width: 100%;
}

.chart-bar {
    flex: 1;
    border-radius: 3px 3px 0 0;
    transition: height 0.3s ease;
    min-height: 2px;
}

.chart-bar.planned {
    background: var(--bg-elevated);
}

.chart-bar.completed {
    background: var(--accent);
}

.chart-bar-label {
    font-size: 0.6rem;
    color: var(--text-muted);
}

.chart-legend {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 16px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 2px;
}

.legend-dot.planned {
    background: var(--bg-elevated);
}

.legend-dot.completed {
    background: var(--accent);
}

/* Donut Chart */
.donut-container {
    display: flex;
    align-items: center;
    gap: 32px;
}

.donut-chart {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    position: relative;
    flex-shrink: 0;
}

.donut-legend {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.donut-legend-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.donut-legend-dot {
    width: 12px;
    height: 12px;
    border-radius: 3px;
    flex-shrink: 0;
}

.donut-legend-value {
    margin-left: auto;
    font-weight: 600;
    color: var(--text-primary);
}

/* Milestones */
.milestones {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.milestone {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    background: var(--bg-elevated);
    border-radius: var(--radius-sm);
}

.milestone.locked {
    opacity: 0.4;
}

.milestone.unlocked {
    background: var(--success-muted);
}

.milestone-icon {
    font-size: 1.5rem;
}

.milestone-content {
    flex: 1;
}

.milestone-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.milestone-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.milestone-check {
    font-size: 1.2rem;
}

/* Consistency Calendar */
.calendar-grid {
    display: grid;
    grid-template-columns: repeat(19, 1fr);
    gap: 4px;
}

.calendar-week {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.calendar-day {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 3px;
    background: var(--bg-elevated);
}

.calendar-day.has-workout {
    background: var(--bg-hover);
}

.calendar-day.completed {
    background: var(--accent);
}

.calendar-day.partial {
    background: rgba(91, 154, 148, 0.4);
}

/* Responsive */
@media (max-width: 640px) {
    .app-container {
        padding: 16px;
        padding-bottom: 80px;
    }

    .hero {
        padding: 20px;
    }

    .hero-content {
        flex-direction: column;
        text-align: center;
        gap: 16px;
    }

    .hero h1 {
        font-size: 1.3rem;
    }
    
    .hero-date {
        font-size: 0.85rem;
    }

    .week-indicator {
        padding: 10px 18px;
    }

    .week-indicator-number {
        font-size: 1.5rem;
    }
    
    .mileage-sparkline {
        height: 40px;
        padding-top: 16px;
        margin-top: 16px;
    }

    /* Tabs - larger touch targets */
    .tabs {
        padding: 3px;
    }
    
    .tab {
        padding: 14px 12px;
        font-size: 0.85rem;
    }

    /* Phase filter */
    .phase-filter {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }
    
    .phase-select {
        max-width: none;
    }

    /* Week cards */
    .week-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
        padding: 16px;
        min-height: 44px;
    }

    .week-right {
        width: 100%;
        justify-content: space-between;
    }
    
    .week-body {
        padding: 0 16px 16px;
    }

    /* Workout items - mobile optimized */
    .workout-item {
        flex-wrap: wrap;
        padding: 16px;
        gap: 10px;
    }

    .workout-checkbox {
        width: 32px;
        height: 32px;
    }
    
    .workout-checkbox::after {
        font-size: 14px;
    }
    
    .workout-rest-spacer {
        width: 32px;
        height: 32px;
    }

    .workout-day {
        width: 45px;
        font-size: 0.75rem;
    }

    .workout-type {
        font-size: 0.6rem;
        padding: 3px 6px;
    }

    .workout-description {
        width: 100%;
        order: 10;
        padding-left: 42px;
        margin-top: 2px;
        font-size: 0.9rem;
    }
    
    .workout-miles {
        margin-left: auto;
    }

    /* Always show workout actions on mobile (no hover) */
    .workout-actions {
        display: flex;
        order: 11;
        width: 100%;
        padding-left: 42px;
        margin-top: 8px;
        gap: 8px;
    }
    
    .workout-action-btn {
        padding: 8px 16px;
        font-size: 0.75rem;
    }

    /* Stats view */
    .stats-row {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .stat-card {
        padding: 14px;
        gap: 10px;
    }

    .stat-icon {
        font-size: 1.1rem;
    }

    .stat-value {
        font-size: 1.2rem;
    }
    
    .stat-label {
        font-size: 0.65rem;
    }
    
    .chart-card {
        padding: 18px;
    }
    
    .chart-card h3 {
        font-size: 0.95rem;
    }

    .chart-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .donut-container {
        flex-direction: column;
        gap: 20px;
    }
    
    .donut-chart {
        width: 120px;
        height: 120px;
        margin: 0 auto;
    }

    .calendar-grid {
        grid-template-columns: repeat(10, 1fr);
        gap: 3px;
    }
    
    .milestone {
        padding: 12px 14px;
    }
    
    .milestone-icon {
        font-size: 1.3rem;
    }
    
    .milestone-title {
        font-size: 0.85rem;
    }
}

/* Skipped indicator in week header */
.week-skipped-count {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-left: 4px;
}

/* Missed workout tip */
.missed-tip {
    display: flex;
    gap: 12px;
    padding: 14px 16px;
    background: var(--bg-elevated);
    border-radius: var(--radius-sm);
    margin-top: 16px;
    border-left: 2px solid var(--success);
}

.missed-tip-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
}

.missed-tip-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Calendar skipped state */
.calendar-day.skipped {
    background: rgba(201, 122, 95, 0.25);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--bg-elevated);
    border-radius: 3px;
}

/* Week complete */
.week-card.week-complete .week-number::after {
    content: ' ✓';
    color: var(--success);
}