/* ============================================
   PlanPeriodizeTrain - Modern Design System 2025
   ============================================ */

:root {
    /* Color System */
    --primary-gradient-start: #667eea;
    --primary-gradient-end: #764ba2;
    --success-gradient-start: #28a745;
    --success-gradient-end: #20c997;
    
    /* Neutral Colors - Light Mode */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #1a1a2e;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    
    /* Semantic Colors */
    --color-success: #28a745;
    --color-warning: #ffc107;
    --color-danger: #dc3545;
    --color-info: #17a2b8;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(102, 126, 234, 0.12);
    --shadow-xl: 0 12px 48px rgba(102, 126, 234, 0.16);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 20px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

/* Dark Mode */
[data-theme="dark"] {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-tertiary: #0f3460;
    --text-primary: #ffffff;
    --text-secondary: #cbd5e0;
    --text-muted: #a0aec0;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 12px 48px rgba(0, 0, 0, 0.6);
}

/* Global Styles */
body {
    background-color: #ffffff;
    color: var(--text-primary);
    transition: background-color var(--transition-base), color var(--transition-base);
    margin: 0;
    padding: 0;
}

/* Modern Navbar */
.modern-navbar {
    background: linear-gradient(135deg, var(--primary-gradient-start) 0%, var(--primary-gradient-end) 100%);
    box-shadow: var(--shadow-md);
    padding: 0.75rem 0;
    backdrop-filter: blur(10px);
}

.modern-navbar .navbar-brand {
    font-weight: 700;
    font-size: 1.25rem;
    transition: transform var(--transition-fast);
}

.modern-navbar .navbar-brand:hover {
    transform: scale(1.05);
}

.modern-navbar .nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    margin: 0 0.25rem;
}

.modern-navbar .nav-link:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-1px);
}

.modern-navbar .nav-link.active {
    background: rgba(255, 255, 255, 0.2);
}

.modern-navbar .btn-link {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.modern-navbar .btn-link:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-1px);
}

.modern-navbar .dropdown-menu {
    background: var(--bg-primary);
    border: 1px solid rgba(102, 126, 234, 0.2);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    margin-top: 0.5rem;
}

[data-theme="dark"] .modern-navbar .dropdown-menu {
    background: var(--bg-tertiary);
    border-color: rgba(255, 255, 255, 0.1);
}

.modern-navbar .dropdown-item {
    color: var(--text-primary);
    padding: 0.75rem 1.25rem;
    transition: all var(--transition-fast);
    border-radius: var(--radius-sm);
    margin: 0.25rem 0.5rem;
}

.modern-navbar .dropdown-item:hover {
    background: var(--bg-secondary);
    color: var(--primary-gradient-start);
    transform: translateX(4px);
}

.modern-navbar .navbar-toggler {
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-md);
    padding: 0.5rem;
}

.modern-navbar .navbar-toggler:focus {
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.2);
}

/* Footer Modern Styling */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--bg-tertiary);
    transition: background-color var(--transition-base);
}

/* General workout tracker styles */
.workout-container {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Modern Card Styles */
.card {
    background: var(--bg-primary);
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

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

/* Modern Button Styles */
.btn {
    border-radius: var(--radius-md);
    font-weight: 600;
    padding: 0.625rem 1.25rem;
    transition: all var(--transition-fast);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-gradient-start) 0%, var(--primary-gradient-end) 100%);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-gradient-start) 0%, var(--success-gradient-end) 100%);
}

/* Glassmorphism Effect */
.glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .glass {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Progress indicator enhancements */
.workout-header .progress-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.progress-bar-custom {
    width: 100px;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
    overflow: hidden;
    margin: 0 1rem;
}

.progress-fill {
    height: 100%;
    background: #28a745;
    border-radius: 2px;
    transition: width 0.3s ease;
}

/* Mobile touch optimizations */
@media (max-width: 768px) {
    .workout-header {
        padding: 0.75rem;
    }
    
    .workout-header h1 {
        font-size: 1.25rem;
    }
    
    .swipe-instructions {
        font-size: 0.9rem;
        padding: 0.75rem 1.5rem;
    }
    
    /* Mobile-specific optimizations */
    .exercise-item {
        max-height: 75vh;
    }
    
    .exercise-item .sets-container {
        max-height: calc(75vh - 100px);
        padding: 1rem;
    }
}

/* Accessibility improvements */
.exercise-item:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

.swipe-instructions:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

/* Loading states */
.exercise-item.loading {
    opacity: 0.7;
    pointer-events: none;
}

/* Success feedback */
.workout-complete {
    animation: fadeInUp 0.5s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translate(-50%, -40%);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%);
    }
}

/* Swipe instructions enhancements */
.swipe-instructions kbd {
    background: rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(0, 0, 0, 0.2);
    border-radius: 3px;
    padding: 0.2rem 0.4rem;
    font-size: 0.8rem;
    font-family: monospace;
    color: #333;
}



.swipe-instructions small {
    opacity: 0.8;
    font-size: 0.8rem;
}

/* Workout controls and timer */
.workout-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.timer-display {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    color: white;
    font-weight: 600;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.timer-display i {
    font-size: 0.9rem;
    opacity: 0.8;
}

.workout-controls .btn {
    border-radius: 20px;
    padding: 0.5rem 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.workout-controls .btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* Paused state */
.workout-container.paused {
    opacity: 0.7;
}

.workout-container.paused .exercise-item {
    pointer-events: none;
}

/* Mobile optimizations for controls */
@media (max-width: 768px) {
    .workout-header .d-flex {
        flex-direction: column;
        gap: 1rem;
    }
    
    .workout-controls {
        justify-content: center;
    }
    
    .timer-display {
        font-size: 1rem;
        padding: 0.4rem 0.8rem;
    }
    
    /* Mobile touch target improvements for timer buttons */
    .rest-btn, .rest-timer-btn {
        min-height: 44px;
        min-width: 44px;
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
        touch-action: manipulation;
        -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
    }
    
    .rest-btn:active, .rest-timer-btn:active {
        transform: scale(0.95);
        transition: transform 0.1s ease;
    }
    
    /* Ensure buttons are not affected by parent swipe events */
    .rest-btn, .rest-timer-btn {
        position: relative;
        z-index: 10;
    }
    
    /* Improve button visibility and contrast */
    .rest-timer-btn {
        background-color: #ffc107 !important;
        color: #212529 !important;
        border: 2px solid #ffc107;
        font-weight: 600;
        transition: all 0.2s ease;
    }
    
    .rest-timer-btn:hover, .rest-timer-btn:focus {
        background-color: #ffca2c !important;
        border-color: #ffca2c;
        transform: translateY(-1px);
    }
    
    /* Hold feedback - button gets darker when being held */
    .rest-timer-btn.holding {
        background-color: #e0a800 !important;
        border-color: #e0a800;
        transform: scale(0.95);
        box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
    }
    
    .rest-btn {
        background-color: #6c757d !important;
        color: white !important;
        border: 2px solid #6c757d;
        transition: all 0.2s ease;
    }
    
    .rest-btn:hover, .rest-btn:focus {
        background-color: #5a6268 !important;
        border-color: #5a6268;
        transform: translateY(-1px);
    }
    
    /* Hold feedback for rest-btn */
    .rest-btn.holding {
        background-color: #545b62 !important;
        border-color: #545b62;
        transform: scale(0.95);
        box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
    }
} 

/* Exercise details area */
.exercise-details {
    max-height: 60vh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 2rem;
}

/* Set checkboxes container */
.set-checkboxes {
    max-height: 50vh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 1rem;
}

/* ============================================
   Progress Visualization Components
   ============================================ */

/* Streak Counter */
.streak-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a6f 100%);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: 1rem;
    box-shadow: var(--shadow-md);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.streak-badge i {
    font-size: 1.2rem;
}

/* Progress Ring */
.progress-ring {
    position: relative;
    width: 120px;
    height: 120px;
}

.progress-ring-circle {
    transition: stroke-dashoffset var(--transition-slow);
    transform: rotate(-90deg);
    transform-origin: 50% 50%;
}

.progress-ring-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Achievement Badges */
.badge-container {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin: 1rem 0;
}

.achievement-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    cursor: pointer;
}

.achievement-badge:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: var(--shadow-lg);
}

.achievement-badge.locked {
    opacity: 0.3;
    filter: grayscale(100%);
}

.achievement-badge i {
    font-size: 2rem;
    margin-bottom: 0.25rem;
}

.achievement-badge .badge-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-align: center;
}

/* Stats Cards */
.stat-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

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

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-gradient-start), var(--primary-gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

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

.stat-change {
    font-size: 0.875rem;
    font-weight: 600;
    margin-top: 0.25rem;
}

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

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

/* ============================================
   Today's Focus Section
   ============================================ */

.today-focus {
    background: linear-gradient(135deg, var(--primary-gradient-start) 0%, var(--primary-gradient-end) 100%);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    color: white;
    box-shadow: var(--shadow-xl);
    margin-bottom: var(--space-lg);
}

.today-focus h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.today-focus-content {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-top: var(--space-md);
}

.workout-quick-start {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.workout-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.workout-meta {
    display: flex;
    gap: 1rem;
    opacity: 0.9;
}

.quick-start-btn {
    background: white;
    color: var(--primary-gradient-start);
    padding: 1rem 2rem;
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: 1.1rem;
    border: none;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    transition: all var(--transition-base);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.quick-start-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.3);
}

/* ============================================
   Periodization Timeline
   ============================================ */

.periodization-timeline {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--space-lg);
}

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

.timeline-phases {
    display: flex;
    gap: 1rem;
    overflow-x: auto;
    padding-bottom: 1rem;
}

.phase-block {
    min-width: 150px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: 1rem;
    border-left: 4px solid transparent;
    transition: all var(--transition-base);
    cursor: pointer;
}

.phase-block.accumulation {
    border-left-color: #4299e1;
}

.phase-block.intensification {
    border-left-color: #f6ad55;
}

.phase-block.pre-competition {
    border-left-color: #fc8181;
}

.phase-block.active {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.phase-name {
    font-weight: 700;
    font-size: 0.875rem;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.phase-dates {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* ============================================
   Accessibility & Focus States
   ============================================ */

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-gradient-start);
    color: white;
    padding: 0.5rem 1rem;
    text-decoration: none;
    z-index: 10000;
    border-radius: 0 0 var(--radius-md) 0;
}

.skip-link:focus {
    top: 0;
}

*:focus-visible {
    outline: 3px solid var(--primary-gradient-start);
    outline-offset: 4px;
    border-radius: var(--radius-sm);
}

/* ============================================
   Responsive Adjustments
   ============================================ */

@media (max-width: 768px) {
    .today-focus {
        padding: var(--space-lg);
    }
    
    .today-focus h2 {
        font-size: 1.5rem;
    }
    
    .workout-quick-start {
        flex-direction: column;
        align-items: stretch;
    }
    
    .quick-start-btn {
        width: 100%;
        justify-content: center;
    }
    
    .stat-value {
        font-size: 2rem;
    }
    
    .timeline-phases {
        gap: 0.5rem;
    }
    
    .phase-block {
        min-width: 120px;
    }
}