/* ========================================
   RESET & BASE STYLES
======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Primary Colors - Sport Theme */
    --primary-color: #10b981;
    --primary-dark: #059669;
    --primary-light: #34d399;
    
    /* Secondary Colors */
    --secondary-color: #3b82f6;
    --secondary-dark: #2563eb;
    --secondary-light: #60a5fa;
    
    /* Status Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    
    /* Neutral Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --border-color: #e5e7eb;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Transitions */
    --transition: all 0.3s ease;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ========================================
   HEADER
======================================== */
.header {
    background: var(--bg-primary);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo i {
    font-size: 1.5rem;
}

.nav {
    display: flex;
    gap: var(--spacing-sm);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    text-decoration: none;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: var(--transition);
    font-weight: 500;
}

.nav-link:hover {
    background: var(--bg-tertiary);
    color: var(--primary-color);
}

.nav-link.active {
    background: var(--primary-color);
    color: white;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    cursor: pointer;
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    box-shadow: var(--shadow-lg);
    z-index: 999;
    padding: var(--spacing-md);
}

.mobile-menu.active {
    display: block;
}

.mobile-menu-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    text-decoration: none;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: var(--transition);
    font-weight: 500;
}

.mobile-menu-link:hover {
    background: var(--bg-tertiary);
    color: var(--primary-color);
}

/* ========================================
   MAIN CONTENT
======================================== */
.main-content {
    min-height: calc(100vh - 76px);
    padding: var(--spacing-xl) 0;
}

.page {
    display: none;
}

.page.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

.page-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

/* ========================================
   HOME PAGE
======================================== */
.hero {
    text-align: center;
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-xl);
    color: white;
    margin-bottom: var(--spacing-xl);
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.feature-card {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
}

.info-section {
    margin-bottom: var(--spacing-xl);
}

.info-section h2 {
    text-align: center;
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
}

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

.step {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
}

.step-number {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto var(--spacing-md);
}

.step h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

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

.schedule-info {
    background: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.schedule-info h2 {
    text-align: center;
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
}

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

.schedule-item {
    text-align: center;
    padding: var(--spacing-md);
}

.schedule-item i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.schedule-item h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.schedule-item p {
    color: var(--text-secondary);
}

/* ========================================
   BUTTONS
======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    font-family: inherit;
    font-size: 1rem;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background: var(--secondary-dark);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-success:hover {
    background: #059669;
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ========================================
   BOOKING PAGE
======================================== */
.booking-step {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-lg);
}

.step-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
}

.step-badge {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.space-filter {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--border-color);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.filter-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.filter-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.space-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.space-card {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    cursor: pointer;
    transition: var(--transition);
}

.space-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.space-card.selected {
    border-color: var(--primary-color);
    background: var(--primary-light);
    background: rgba(16, 185, 129, 0.1);
}

.space-card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.space-icon {
    font-size: 2rem;
}

.space-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
}

.space-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.space-price {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-color);
}

.price-item {
    text-align: center;
}

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

.price-value {
    font-weight: 700;
    color: var(--primary-color);
}

.date-time-selector {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    align-items: end;
}

.date-picker label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.form-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    font-weight: 600;
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.time-slots {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-sm);
}

.time-slot {
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
}

.time-slot:hover {
    border-color: var(--primary-color);
    background: rgba(16, 185, 129, 0.05);
}

.time-slot.selected {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.time-slot.unavailable {
    background: var(--bg-tertiary);
    color: var(--text-light);
    cursor: not-allowed;
    opacity: 0.5;
}

.time-slot.pending {
    background: var(--warning);
    color: white;
    border-color: var(--warning);
}

.time-slot-queue {
    font-size: 0.75rem;
    margin-top: var(--spacing-xs);
}

.booking-form {
    max-width: 600px;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.booking-summary {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin: var(--spacing-lg) 0;
}

.booking-summary h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.summary-item {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-color);
}

.summary-item:last-child {
    border-bottom: none;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--primary-color);
}

/* ========================================
   BOOKINGS LIST
======================================== */
.search-section {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-lg);
}

.input-with-button {
    display: flex;
    gap: var(--spacing-sm);
}

.bookings-list {
    display: grid;
    gap: var(--spacing-md);
}

.booking-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    border-left: 4px solid var(--border-color);
}

.booking-card.pending {
    border-left-color: var(--warning);
}

.booking-card.approved {
    border-left-color: var(--success);
}

.booking-card.rejected {
    border-left-color: var(--danger);
}

.booking-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: var(--spacing-md);
}

.booking-info h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.booking-status {
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.875rem;
}

.booking-status.pending {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.booking-status.approved {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.booking-status.rejected {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.booking-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.detail-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.detail-item i {
    color: var(--primary-color);
}

.booking-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* ========================================
   ADMIN PAGE
======================================== */
.admin-login {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
}

.login-card {
    background: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 400px;
}

.login-card h1 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--primary-color);
}

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

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

.stat-card {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-icon.pending {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.stat-icon.approved {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.stat-icon.rejected {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.stat-icon.total {
    background: rgba(59, 130, 246, 0.1);
    color: var(--info);
}

.stat-info h3 {
    font-size: 2rem;
    font-weight: 800;
}

.stat-info p {
    color: var(--text-secondary);
}

.admin-filters {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.admin-bookings-list {
    display: grid;
    gap: var(--spacing-md);
}

.queue-info {
    background: rgba(245, 158, 11, 0.1);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-sm);
}

.queue-info strong {
    color: var(--warning);
}

/* ========================================
   MODAL
======================================== */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.2s ease;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-close {
    position: absolute;
    right: var(--spacing-md);
    top: var(--spacing-md);
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--danger);
}

/* ========================================
   TOAST NOTIFICATIONS
======================================== */
.toast-container {
    position: fixed;
    top: 100px;
    right: var(--spacing-md);
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    min-width: 300px;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    animation: slideInRight 0.3s ease;
}

@keyframes slideInRight {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast.success {
    background: var(--success);
    color: white;
}

.toast.error {
    background: var(--danger);
    color: white;
}

.toast.warning {
    background: var(--warning);
    color: white;
}

.toast.info {
    background: var(--info);
    color: white;
}

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

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

/* ========================================
   LOADING OVERLAY
======================================== */
.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 4000;
    justify-content: center;
    align-items: center;
}

.loading-overlay.active {
    display: flex;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ========================================
   RESPONSIVE DESIGN
======================================== */
@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero h1 {
        font-size: 1.75rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .page-title {
        font-size: 1.5rem;
    }
    
    .features {
        grid-template-columns: 1fr;
    }
    
    .steps {
        grid-template-columns: 1fr;
    }
    
    .schedule-grid {
        grid-template-columns: 1fr;
    }
    
    .space-list {
        grid-template-columns: 1fr;
    }
    
    .date-time-selector {
        grid-template-columns: 1fr;
    }
    
    .time-slots {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
    
    .booking-details {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .input-with-button {
        flex-direction: column;
    }
    
    .toast-container {
        left: var(--spacing-sm);
        right: var(--spacing-sm);
    }
    
    .toast {
        min-width: auto;
    }
    
    .modal-content {
        width: 95%;
        padding: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .feature-card,
    .booking-step,
    .login-card {
        padding: var(--spacing-md);
    }
    
    .time-slots {
        grid-template-columns: 1fr;
    }
    
    .space-filter {
        flex-direction: column;
    }
    
    .filter-btn {
        width: 100%;
        justify-content: center;
    }
}

/* ========================================
   UTILITY CLASSES
======================================== */
.text-center {
    text-align: center;
}

.text-success {
    color: var(--success);
}

.text-danger {
    color: var(--danger);
}

.text-warning {
    color: var(--warning);
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }

.hidden {
    display: none !important;
}