/* ============================================
   GRIT Calendar Enhancements
   TrainingPeaks-style calendar improvements
   ============================================ */

/* ============================================
   Workout Preview Tooltip on Hover
   ============================================ */

.workout-item {
    position: relative;
}

.workout-item:hover .workout-preview-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.workout-preview-tooltip {
    position: absolute;
    bottom: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%) translateY(5px);
    z-index: 1000;
    width: 280px;
    background: var(--bg-dark-700, #1e1e1e);
    border: 1px solid var(--border-color, rgba(255,255,255,0.1));
    border-radius: 12px;
    padding: 16px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.4);
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    pointer-events: none;
}

.workout-preview-tooltip::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 8px solid var(--bg-dark-700, #1e1e1e);
}

.workout-preview-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.workout-preview-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.workout-preview-icon.run { background: linear-gradient(135deg, #3b82f6, #1d4ed8); color: white; }
.workout-preview-icon.ride { background: linear-gradient(135deg, #f59e0b, #d97706); color: white; }
.workout-preview-icon.swim { background: linear-gradient(135deg, #06b6d4, #0891b2); color: white; }
.workout-preview-icon.strength { background: linear-gradient(135deg, #ef4444, #dc2626); color: white; }
.workout-preview-icon.rest { background: linear-gradient(135deg, #10b981, #059669); color: white; }

.workout-preview-title {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.workout-preview-type {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.workout-preview-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-bottom: 12px;
}

.workout-preview-stat {
    text-align: center;
    padding: 8px;
    background: var(--bg-tertiary, rgba(255,255,255,0.05));
    border-radius: 8px;
}

.workout-preview-stat-value {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.workout-preview-stat-label {
    font-size: 0.65rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.workout-preview-description {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.workout-preview-zones {
    display: flex;
    gap: 4px;
    margin-top: 10px;
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
}

.workout-preview-zone {
    flex: 1;
    transition: all 0.2s ease;
}

.workout-preview-zone.active {
    flex: 2;
}

.workout-preview-zone.z1 { background: #60a5fa; }
.workout-preview-zone.z2 { background: #34d399; }
.workout-preview-zone.z3 { background: #fbbf24; }
.workout-preview-zone.z4 { background: #f97316; }
.workout-preview-zone.z5 { background: #ef4444; }

/* ============================================
   Enhanced Day Cell Styling
   ============================================ */

.calendar-day {
    position: relative;
    transition: all 0.2s ease;
    min-height: 120px;
}

.calendar-day:hover {
    transform: scale(1.02);
    z-index: 10;
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

.calendar-day.today {
    border: 2px solid var(--grit-primary, #bf1a2f);
    box-shadow: 0 0 20px rgba(191, 26, 47, 0.2);
}

.calendar-day.has-workout::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    border-radius: 4px 0 0 4px;
}

.calendar-day.zone-1::before { background: linear-gradient(to bottom, #60a5fa, #3b82f6); }
.calendar-day.zone-2::before { background: linear-gradient(to bottom, #34d399, #10b981); }
.calendar-day.zone-3::before { background: linear-gradient(to bottom, #fbbf24, #f59e0b); }
.calendar-day.zone-4::before { background: linear-gradient(to bottom, #f97316, #ea580c); }
.calendar-day.zone-5::before { background: linear-gradient(to bottom, #ef4444, #dc2626); }

/* ============================================
   Week Row Headers (TrainingPeaks Style)
   ============================================ */

.week-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: linear-gradient(135deg, var(--bg-secondary, #2a2a2a), var(--bg-tertiary, #333));
    border-radius: 8px;
    margin-bottom: 8px;
}

.week-number {
    background: var(--grit-primary, #bf1a2f);
    color: white;
    font-weight: 700;
    font-size: 0.85rem;
    padding: 4px 10px;
    border-radius: 6px;
}

.week-dates {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.week-load-bar {
    flex: 1;
    height: 8px;
    background: var(--bg-dark-600, #333);
    border-radius: 4px;
    overflow: hidden;
    margin-left: auto;
    max-width: 200px;
}

.week-load-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.3s ease;
}

.week-load-fill.low { background: linear-gradient(90deg, #60a5fa, #3b82f6); }
.week-load-fill.moderate { background: linear-gradient(90deg, #34d399, #10b981); }
.week-load-fill.high { background: linear-gradient(90deg, #f97316, #ea580c); }
.week-load-fill.overload { background: linear-gradient(90deg, #ef4444, #dc2626); }

/* ============================================
   Drag & Drop Visual Enhancements
   ============================================ */

.calendar-day.drag-over {
    background: rgba(191, 26, 47, 0.15) !important;
    border: 2px dashed var(--grit-primary, #bf1a2f) !important;
    transform: scale(1.02);
}

.workout-item.dragging {
    opacity: 0.5;
    transform: rotate(3deg);
    cursor: grabbing;
}

.workout-item.drag-preview {
    position: fixed;
    pointer-events: none;
    z-index: 10000;
    transform: rotate(-3deg) scale(1.05);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

.workout-drag-ghost {
    position: fixed;
    padding: 12px 16px;
    background: var(--grit-primary, #bf1a2f);
    color: white;
    font-weight: 600;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.4);
    pointer-events: none;
    z-index: 10000;
    transform: translate(-50%, -50%);
}

/* ============================================
   Quick Add Button Animation
   ============================================ */

.quick-add-btn {
    position: absolute;
    bottom: 8px;
    right: 8px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--grit-primary, #bf1a2f);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.2s ease;
    z-index: 5;
}

.calendar-day:hover .quick-add-btn {
    opacity: 1;
    transform: scale(1);
}

.quick-add-btn:hover {
    transform: scale(1.15);
    box-shadow: 0 4px 12px rgba(191, 26, 47, 0.4);
}

/* ============================================
   Compliance Indicator
   ============================================ */

.compliance-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    color: white;
    font-weight: 700;
}

.compliance-badge.completed {
    background: linear-gradient(135deg, #10b981, #059669);
}

.compliance-badge.partial {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

.compliance-badge.missed {
    background: linear-gradient(135deg, #ef4444, #dc2626);
}

/* ============================================
   Month Navigation
   ============================================ */

.month-nav {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.month-nav-btn {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--bg-secondary, #2a2a2a);
    border: 1px solid var(--border-color, rgba(255,255,255,0.1));
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: all 0.2s ease;
}

.month-nav-btn:hover {
    background: var(--bg-tertiary, #333);
    color: var(--text-primary);
    transform: scale(1.05);
}

.month-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    flex: 1;
}

.month-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-left: 12px;
}

/* ============================================
   Training Load Bar (TSB Style)
   ============================================ */

.training-load-indicator {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--bg-tertiary, #333);
    border-radius: 0 0 8px 8px;
    overflow: hidden;
}

.training-load-bar {
    height: 100%;
    border-radius: 0 0 0 4px;
    transition: width 0.3s ease;
}

.training-load-bar.easy { background: #60a5fa; }
.training-load-bar.moderate { background: #34d399; }
.training-load-bar.hard { background: #f97316; }
.training-load-bar.very-hard { background: #ef4444; }

/* ============================================
   Multi-workout Stacking
   ============================================ */

.workout-stack {
    position: relative;
}

.workout-stack .workout-item:not(:first-child) {
    margin-top: -4px;
    border-top: 2px solid var(--bg-primary, #1a1a1a);
}

.workout-stack-count {
    position: absolute;
    top: 4px;
    right: 4px;
    background: var(--bg-dark-700, #222);
    color: var(--text-secondary);
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 10px;
    border: 1px solid var(--border-color, rgba(255,255,255,0.1));
}

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

@media (max-width: 1024px) {
    .workout-preview-tooltip {
        display: none !important;
    }
    
    .week-load-bar {
        display: none;
    }
    
    .calendar-day {
        min-height: 100px;
    }
}

@media (max-width: 768px) {
    .calendar-day {
        min-height: 80px;
    }
    
    .week-header {
        padding: 8px 12px;
    }
    
    .quick-add-btn {
        opacity: 1;
        transform: scale(1);
    }
}

/* ============================================
   Animation for Adding Workouts
   ============================================ */

@keyframes workoutAdded {
    0% {
        transform: scale(0.8);
        opacity: 0;
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.workout-item.just-added {
    animation: workoutAdded 0.3s ease;
}

@keyframes workoutRemoved {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    100% {
        transform: scale(0.8);
        opacity: 0;
    }
}

.workout-item.removing {
    animation: workoutRemoved 0.2s ease forwards;
}

/* ============================================
   Periodization Phase Indicators
   ============================================ */

.phase-indicator {
    position: absolute;
    top: -24px;
    left: 0;
    right: 0;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 4px 4px 0 0;
}

.phase-indicator.base {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
}

.phase-indicator.build {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
}

.phase-indicator.peak {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
}

.phase-indicator.taper {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
}

.phase-indicator.recovery {
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
    color: white;
}

/* ============================================
   Race Day Marker
   ============================================ */

.race-day-marker {
    position: relative;
}

.race-day-marker::after {
    content: '';
    position: absolute;
    top: 4px;
    right: 4px;
    font-size: 1.2rem;
}

.race-day-marker .calendar-day {
    border: 2px solid #ffd700 !important;
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.3);
}

/* ============================================
   Dark Mode Adjustments
   ============================================ */

[data-theme="dark"] .workout-preview-tooltip {
    background: var(--bg-dark-700, #1e1e1e);
    border-color: var(--border-color, rgba(255,255,255,0.1));
}

[data-theme="dark"] .workout-preview-tooltip::after {
    border-top-color: var(--bg-dark-700, #1e1e1e);
}

[data-theme="light"] .workout-preview-tooltip {
    background: white;
    border-color: #e5e7eb;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}

[data-theme="light"] .workout-preview-tooltip::after {
    border-top-color: white;
}