:root {
    --primary: #1e3a5f;
    --primary-light: #2c5282;
    --primary-dark: #152a45;
    --secondary: #2d3748;
    --accent: #3182ce;
    --accent-light: #63b3ed;
    --dark: #1a202c;
    --dark-light: #2d3748;
    --text-light: #e2e8f0;
    --text-muted: #a0aec0;
    --white: #ffffff;
    --success: #48bb78;
    --error: #f56565;
    --warning: #ed8936;
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    --transition: all 0.3s ease;
}

select {
    background-color: #1e3a5f !important;
    color: #ffffff !important;
}

select option {
    background-color: #1e3a5f !important;
    color: #ffffff !important;
}

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

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, var(--dark) 0%, var(--primary-dark) 50%, var(--secondary) 100%);
    min-height: 100vh;
    color: var(--text-light);
    line-height: 1.6;
}

.navbar {
    background: rgba(30, 58, 95, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 2rem;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--white);
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 600;
}

.nav-logo i {
    color: var(--accent-light);
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--accent-light);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-light);
    transition: var(--transition);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.btn-nav {
    background: var(--accent);
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    transition: var(--transition);
}

.btn-nav:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
}

.alert {
    position: fixed;
    top: 80px;
    right: 20px;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    z-index: 1001;
    animation: slideIn 0.3s ease;
    max-width: 400px;
}

.alert-success {
    background: rgba(72, 187, 120, 0.9);
    color: var(--white);
}

.alert-error {
    background: rgba(245, 101, 101, 0.9);
    color: var(--white);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 20px 60px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('https://images.unsplash.com/photo-1504472478235-9bc48ba4d60f?w=1920') center/cover;
    opacity: 0.15;
    z-index: 0;
}

.hero.has-custom-bg::before {
    display: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
}

.hero h1 {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    animation: fadeInUp 1s ease;
}

.hero h2 {
    font-size: 1.8rem;
    font-weight: 400;
    color: var(--accent-light);
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease 0.2s backwards;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.4s backwards;
}

.btn {
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, var(--primary-light) 100%);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(49, 130, 206, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(49, 130, 206, 0.6);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.features {
    padding: 80px 20px;
    background: rgba(30, 58, 95, 0.5);
}

.features-container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow);
}

.feature-card i {
    font-size: 3rem;
    color: var(--accent-light);
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--white);
}

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

.glass-form {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 3rem;
    max-width: 450px;
    width: 100%;
    margin: 0 auto;
    box-shadow: var(--shadow);
}

.form-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--white);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-light);
    font-weight: 500;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group input[type="url"],
.form-group input[type="time"],
.form-group input[type="date"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(30, 58, 95, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 10px;
    color: #ffffff;
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group input[type="password"]:focus,
.form-group input[type="number"]:focus,
.form-group input[type="url"]:focus,
.form-group input[type="time"]:focus,
.form-group input[type="date"]:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-light);
    background-color: rgba(30, 58, 95, 0.95);
}

.form-group select {
    width: 100%;
    padding: 1rem;
    padding-right: 2.5rem;
    background: rgba(30, 58, 95, 0.9);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23ffffff' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14L2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: calc(100% - 1rem) center;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 10px;
    color: #ffffff;
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s ease;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
}

.form-group select:focus {
    outline: none;
    border-color: var(--accent-light);
    background-color: rgba(30, 58, 95, 0.95);
}

select option {
    background-color: #1e3a5f;
    color: #ffffff;
    padding: 8px;
}

.form-group input[type="checkbox"] {
    width: 20px;
    height: 20px;
    padding: 0;
    background: rgba(30, 58, 95, 0.9);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 4px;
    cursor: pointer;
    appearance: auto;
    -webkit-appearance: auto;
    -moz-appearance: auto;
    background-image: none;
}

.form-group input[type="checkbox"]:checked {
    background-color: var(--accent);
    border-color: var(--accent-light);
}

.form-control {
    padding: 0.75rem !important;
    background-color: #1e3a5f !important;
    color: #ffffff !important;
    border: 1px solid rgba(255, 255, 255, 0.3) !important;
    border-radius: 8px !important;
    appearance: none !important;
    -webkit-appearance: none !important;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23ffffff' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14L2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E") !important;
    background-repeat: no-repeat !important;
    background-position: calc(100% - 0.5rem) center !important;
    padding-right: 2rem !important;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #63b3ed !important;
    background-color: rgba(44, 82, 130, 0.95) !important;
    box-shadow: 0 0 0 2px rgba(99, 179, 237, 0.3);
}

.form-group select option {
    background-color: #1e3a5f !important;
    color: #ffffff !important;
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.form-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--accent) 0%, var(--primary-light) 100%);
    color: var(--white);
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.form-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(49, 130, 206, 0.4);
}

.form-footer {
    text-align: center;
    margin-top: 1.5rem;
    color: var(--text-muted);
}

.form-footer a {
    color: var(--accent-light);
    text-decoration: none;
}

.form-footer a:hover {
    text-decoration: underline;
}

.page-container {
    min-height: 100vh;
    padding: 120px 20px 60px;
}

.page-header {
    text-align: center;
    margin-bottom: 3rem;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.2rem;
    color: var(--text-muted);
}

.dashboard-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 120px 20px 60px;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 2rem;
}

.dashboard-sidebar {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    height: fit-content;
}

.dashboard-sidebar h3 {
    color: var(--white);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.dashboard-nav {
    list-style: none;
}

.dashboard-nav li {
    margin-bottom: 0.5rem;
}

.dashboard-nav a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--text-light);
    text-decoration: none;
    border-radius: 10px;
    transition: var(--transition);
}

.dashboard-nav a:hover,
.dashboard-nav a.active {
    background: rgba(49, 130, 206, 0.3);
    color: var(--accent-light);
}

.dashboard-content {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
}

.calendar-container {
    max-width: 1000px;
    margin: 0 auto;
}

.calendar {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.calendar-header h2 {
    font-size: 1.8rem;
    color: var(--white);
}

.calendar-nav {
    display: flex;
    gap: 1rem;
}

.calendar-nav button {
    padding: 0.5rem 1rem;
    background: var(--accent);
    border: none;
    border-radius: 8px;
    color: var(--white);
    cursor: pointer;
    transition: var(--transition);
}

.calendar-nav button:hover {
    background: var(--accent-light);
}

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

.calendar-day-header {
    text-align: center;
    padding: 1rem;
    font-weight: 600;
    color: var(--accent-light);
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    background: rgba(255, 255, 255, 0.05);
}

.calendar-day:hover:not(.disabled):not(.past) {
    background: rgba(49, 130, 206, 0.3);
    border-color: var(--accent);
}

.calendar-day.past,
.calendar-day.disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.calendar-day.today {
    border-color: var(--accent-light);
    background: rgba(99, 179, 237, 0.2);
}

.calendar-day.selected {
    background: var(--accent);
    color: var(--white);
}

.calendar-day.full {
    background: rgba(245, 101, 101, 0.3);
}

.calendar-day .day-number {
    font-weight: 600;
    font-size: 1.1rem;
}

.calendar-day .slots-info {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.calendar-day.full .slots-info {
    color: var(--error);
}

.booking-info {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    margin-top: 2rem;
}

.booking-info h3 {
    color: var(--white);
    margin-bottom: 1rem;
}

.booking-info p {
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.booking-info .form-group {
    margin-bottom: 1rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    padding: 1.5rem;
    text-align: center;
}

.stat-card i {
    font-size: 2rem;
    color: var(--accent-light);
    margin-bottom: 0.5rem;
}

.stat-card .stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--white);
}

.stat-card .stat-label {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--glass-border);
}

th {
    color: var(--accent-light);
    font-weight: 600;
}

td {
    color: var(--text-light);
}

tr:hover {
    background: rgba(255, 255, 255, 0.05);
}

.badge {
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.badge-success {
    background: rgba(72, 187, 120, 0.3);
    color: var(--success);
}

.badge-warning {
    background: rgba(237, 137, 54, 0.3);
    color: var(--warning);
}

.badge-error {
    background: rgba(245, 101, 101, 0.3);
    color: var(--error);
}

.badge-info {
    background: rgba(66, 153, 225, 0.3);
    color: #4299e1;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

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

.btn-danger:hover {
    background: #e53e3e;
}

.admin-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.admin-tab {
    padding: 1rem 2rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
}

.admin-tab:hover,
.admin-tab.active {
    background: var(--accent);
    border-color: var(--accent);
}

.filter-form {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.filter-form .form-group {
    margin-bottom: 0;
}

.filter-form input,
.filter-form select {
    padding: 0.75rem !important;
    padding-right: 2.5rem !important;
    background-color: rgba(30, 58, 95, 0.9) !important;
    color: #ffffff !important;
    border: 1px solid rgba(255, 255, 255, 0.3) !important;
    border-radius: 8px;
    appearance: none !important;
    -webkit-appearance: none !important;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23ffffff' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14L2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E") !important;
    background-repeat: no-repeat !important;
    background-position: calc(100% - 0.75rem) center !important;
}

.filter-form select option {
    background-color: #1e3a5f !important;
    color: #ffffff !important;
}

.footer {
    background: var(--primary-dark);
    padding: 60px 20px 20px;
    margin-top: 80px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
}

.footer-section h3 {
    color: var(--white);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.footer-section p,
.footer-section li {
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    list-style: none;
}

.footer-section a {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--accent-light);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    color: var(--text-light);
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--accent);
    border-color: var(--accent);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    margin-top: 2rem;
    border-top: 1px solid var(--glass-border);
    color: var(--text-muted);
}

.user-bookings {
    display: grid;
    gap: 1rem;
}

.booking-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 15px;
}

.booking-card .date {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--white);
}

.booking-card .details {
    color: var(--text-muted);
}

.booking-card .actions {
    display: flex;
    gap: 0.5rem;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--primary);
    border-radius: 20px;
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    position: relative;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-header h3 {
    color: var(--white);
    font-size: 1.5rem;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

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

@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--primary);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        display: none;
    }

    .nav-menu.active {
        display: flex;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero h2 {
        font-size: 1.3rem;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .dashboard-sidebar {
        order: 2;
    }

    .calendar-grid {
        gap: 0.25rem;
    }

    .calendar-day {
        font-size: 0.9rem;
    }

    .calendar-day .slots-info {
        display: none;
    }

    .booking-card {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .table-container {
        font-size: 0.9rem;
    }

    th, td {
        padding: 0.75rem 0.5rem;
    }
}