/* CSS Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-primary: #9cff00;
    --color-bg-dark: #000000;
    --color-bg-card: #0a0a0a;
    --color-bg-hover: #1a1a1a;
    --color-text-primary: #ffffff;
    --color-text-secondary: #999999;
    --color-border: #1a1a1a;
    --color-red: #ff4444;
    --color-green: #9cff00;
    --sidebar-width: 240px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--color-bg-dark);
    color: var(--color-text-primary);
    overflow-x: hidden;
    line-height: 1.6;
}

/* SVG Icon Styling */
.icon {
    width: 1rem;
    height: 1rem;
    fill: currentColor;
    flex-shrink: 0;
}

svg.icon {
    display: inline-block;
    vertical-align: middle;
}

.nav-item .icon {
    width: 0.95rem;
    height: 0.95rem;
}

.stat-header .icon {
    width: 1.1rem;
    height: 1.1rem;
}

.notification-btn .icon {
    width: 1rem;
    height: 1rem;
}

.date-display .icon {
    width: 1.1rem;
    height: 1.1rem;
}

/* Sidebar */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background-color: var(--color-bg-card);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    padding: 1.5rem 0;
    overflow-y: auto;
    z-index: 1000;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0 1.25rem;
    margin-bottom: 1rem;
}

.logo {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, #7acc00 100%);
}

.brand {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 1px;
}

.brand-subtitle {
    font-size: 0.65rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.tagline {
    padding: 0 1.25rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 1.5rem;
}

.tagline h2 {
    font-size: 0.9rem;
    color: var(--color-text-primary);
    margin-bottom: 0.25rem;
    font-weight: 600;
}

.tagline p {
    font-size: 0.65rem;
    color: var(--color-primary);
    letter-spacing: 1px;
}

.nav-menu {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0 0.75rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0.75rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.2s ease;
    position: relative;
    letter-spacing: 0.5px;
}

.nav-item:hover {
    background-color: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.nav-item.active {
    background-color: var(--color-primary);
    color: var(--color-bg-dark);
    font-weight: 600;
}

.nav-item .icon {
    font-size: 1.1rem;
}

.nav-item .badge {
    margin-left: auto;
    background-color: var(--color-red);
    color: white;
    padding: 0.15rem 0.5rem;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 600;
}

.coach-profile {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    margin: 1rem 0.75rem 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.coach-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, #7acc00 100%);
}

.coach-info {
    display: flex;
    flex-direction: column;
}

.coach-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.coach-title {
    font-size: 0.7rem;
    color: var(--color-text-secondary);
}

.motto {
    padding: 1rem 1.25rem;
    text-align: left;
}

.motto h3 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-primary);
    font-style: italic;
    margin-bottom: 0.15rem;
    text-shadow: 0 0 10px rgba(156, 255, 0, 0.3);
}

/* Main Content */
.main-content {
    margin-left: var(--sidebar-width);
    padding: 2rem;
    min-height: 100vh;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--color-border);
}

.date-display {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
}

.date-display .icon {
    font-size: 1.5rem;
}

.date {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text-primary);
    display: block;
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.notification-btn {
    position: relative;
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.notification-btn:hover {
    background-color: var(--color-bg-hover);
}

.notification-btn .icon {
    font-size: 1.5rem;
}

.notification-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background-color: var(--color-red);
    color: white;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 600;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 1rem;
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, #7acc00 100%);
}

.user-info {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.user-role {
    font-size: 0.7rem;
    color: var(--color-text-secondary);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.stat-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.stat-card.highlight {
    background: linear-gradient(135deg, rgba(156, 255, 0, 0.1) 0%, rgba(122, 204, 0, 0.05) 100%);
    border-color: var(--color-primary);
}

.stat-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

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

.stat-label {
    font-size: 0.7rem;
    color: var(--color-text-secondary);
    font-weight: 500;
    letter-spacing: 0.5px;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
    line-height: 1;
}

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

/* Content Grid */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
}

.card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 1.5rem;
}

.card-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 1.5rem;
    letter-spacing: 0.5px;
}

/* Leaderboard */
.leaderboard {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.leaderboard-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background-color: var(--color-bg-dark);
    border-radius: 10px;
    transition: all 0.2s ease;
}

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

.rank {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    min-width: 30px;
}

.athlete-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, #7acc00 100%);
}

.athlete-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.athlete-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.athlete-group {
    font-size: 0.7rem;
    color: var(--color-text-secondary);
}

.time {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
}

/* Attendance Chart */
.attendance-chart {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.chart-circle {
    position: relative;
    width: 200px;
    height: 200px;
}

.chart-circle svg {
    width: 100%;
    height: 100%;
}

.chart-label {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.percentage {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
}

.subtitle {
    display: block;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-top: 0.25rem;
}

.attendance-legend {
    display: flex;
    gap: 2rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.hadir {
    background-color: var(--color-primary);
}

.dot.tidak-hadir {
    background-color: var(--color-red);
}

/* Calendar */
.calendar {
    margin-bottom: 1rem;
}

.calendar-header {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.calendar-header span {
    text-align: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    padding: 0.5rem;
}

.calendar-row {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.5rem;
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg-dark);
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    transition: all 0.2s ease;
}

.calendar-day.empty {
    color: var(--color-text-secondary);
    opacity: 0.3;
}

.calendar-day.training {
    background-color: var(--color-primary);
    color: var(--color-bg-dark);
    cursor: pointer;
}

.calendar-day.training:hover {
    transform: scale(1.05);
}

/* Events List */
.events-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.event-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background-color: var(--color-bg-dark);
    border-radius: 10px;
    transition: all 0.2s ease;
}

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

.event-icon {
    font-size: 1rem;
    width: 1rem;
    height: 1rem;
    fill: var(--color-primary);
    flex-shrink: 0;
}

.event-info {
    flex: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.event-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

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

/* Quick Links */
.quick-links .links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 0.75rem;
}

.quick-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background-color: var(--color-bg-dark);
    border-radius: 10px;
    text-decoration: none;
    color: var(--color-text-primary);
    font-size: 0.85rem;
    transition: all 0.2s ease;
}

.quick-link:hover {
    background-color: var(--color-bg-hover);
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.quick-link .icon {
    font-size: 1rem;
    width: 1rem;
    height: 1rem;
    fill: var(--color-primary);
    flex-shrink: 0;
}

/* Achievement Card */
.achievement-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.achievement-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background-color: var(--color-bg-dark);
    border-radius: 10px;
}

.achievement-item .icon {
    width: 1rem;
    height: 1rem;
    fill: var(--color-primary);
    flex-shrink: 0;
}

.achievement-label {
    flex: 1;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.achievement-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
}

/* Button Link */
.btn-link {
    background: none;
    border: none;
    color: var(--color-primary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0;
    transition: all 0.2s ease;
}

.btn-link:hover {
    gap: 0.75rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .sidebar {
        width: 200px;
    }
    
    .main-content {
        margin-left: 200px;
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        padding: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .header {
        flex-direction: column;
        gap: 1rem;
    }
}

/* Performance Optimizations */
* {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

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

.stat-card,
.card {
    animation: fadeIn 0.5s ease;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-card);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}