:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #60a5fa;
    --secondary: #8b5cf6;
    --dark-bg: #0f172a;
    --dark-surface: #1e293b;
    --dark-surface-light: #334155;
    --text-light: #f1f5f9;
    --text-muted: #94a3b8;
    --success: #22c55e;
    --gradient-1: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
    --gradient-2: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    background: var(--gradient-1);
    color: var(--text-light);
    line-height: 1.6;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.logo-highlight {
    color: var(--primary-light);
}

/* Auth Buttons */
.auth-buttons {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.btn-login,
.btn-signup {
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    border: none;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-login {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary-light);
}

.btn-login:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

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

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

@media (max-width: 768px) {
    .auth-buttons {
        display: none;
    }
}

/* User Profile Dropdown */
.user-profile-dropdown {
    position: relative;
}

.user-profile-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    background: var(--primary);
    color: white;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

.user-profile-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.user-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--dark-surface);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    min-width: 200px;
    margin-top: 0.5rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 1200;
}

.user-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.user-menu a,
.user-menu hr {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
    border: none;
    background: none;
    text-align: left;
    width: 100%;
    cursor: pointer;
}

.user-menu a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.user-menu a:hover {
    background: rgba(59, 130, 246, 0.2);
    color: var(--primary-light);
}

.user-menu a i {
    width: 18px;
    text-align: center;
}

.user-menu hr {
    margin: 0;
    padding: 0;
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
}

nav ul {
    display: flex;
    gap: 2rem;
    list-style: none;
}

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

nav ul li a:hover {
    color: var(--primary-light);
}

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

nav ul li a:hover::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 80vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(30, 58, 138, 0.85));
}

.hero-content {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.hero-text {
    flex: 1;
    min-width: 280px;
}

.hero-text h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #fff, var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text p {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-stats {
    flex: 0.5;
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-item {
    text-align: center;
    flex: 1;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-light);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 10px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

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

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

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary-light);
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--dark-surface-light);
    color: var(--text-light);
}

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

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

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header.left-align {
    text-align: left;
}

.section-tag {
    display: inline-block;
    padding: 0.25rem 1rem;
    background: rgba(59, 130, 246, 0.2);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary-light);
    margin-bottom: 1rem;
}

.section-header h2 {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

.section-header.left-align p {
    margin: 0;
}

/* Eskul Grid */
.eskul-section {
    padding: 5rem 0;
}

.eskul-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.card-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: var(--transition);
}

.card:hover .card-image {
    transform: scale(1.05);
}

.card-body {
    padding: 1.5rem;
}

.card h3 {
    color: var(--primary-light);
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.card p {
    color: var(--text-muted);
    font-size: 0.875rem;
    line-height: 1.5;
}

.card-tags {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.card-tag {
    background: rgba(59, 130, 246, 0.2);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    color: var(--primary-light);
}

/* Form Section */
.form-section {
    padding: 5rem 0;
    background: rgba(15, 23, 42, 0.5);
}

.form-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 3rem;
    align-items: start;
}

.form-info {
    position: sticky;
    top: 100px;
}

.info-cards {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
}

.info-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.info-card i {
    font-size: 1.5rem;
    color: var(--primary-light);
}

.info-card h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.info-card p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.form-container {
    background: rgba(255, 255, 255, 0.95);
    color: var(--dark-bg);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--dark-bg);
}

.form-group label i {
    margin-right: 0.5rem;
    color: var(--primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 0.875rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* Success Message */
.success {
    display: none;
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, #22c55e, #16a34a);
    color: white;
    border-radius: 12px;
    margin-top: 1.5rem;
}

.success i {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.success h3 {
    margin-bottom: 0.5rem;
}

/* Auth Modal Styles */
.auth-modal {
    display: none;
    position: fixed;
    z-index: 1100;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    align-items: center;
    justify-content: center;
    padding: 20px;
    overflow-y: auto;
}

.auth-modal-content {
    background: var(--dark-surface);
    width: 100%;
    max-width: 450px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    animation: modalSlideIn 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-header-auth {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.02);
}

.modal-header-auth h2 {
    font-size: 1.5rem;
    color: var(--primary-light);
    margin: 0;
}

.modal-header-auth .close {
    position: static;
    background: none;
    width: auto;
    height: auto;
    font-size: 1.5rem;
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
}

.modal-header-auth .close:hover {
    color: var(--text-light);
    transform: scale(1.2);
}

.auth-form {
    padding: 1.5rem;
}

.auth-form-group {
    margin-bottom: 1.25rem;
}

.auth-form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-light);
}

.auth-form-group label i {
    margin-right: 0.5rem;
    color: var(--primary-light);
}

.password-input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.password-input-group input {
    width: 100%;
    padding: 0.75rem;
    padding-right: 2.5rem;
    border: 2px solid rgba(255, 255, 255, 0.15);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-light);
    font-size: 0.875rem;
    transition: var(--transition);
}

.password-input-group input:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(59, 130, 246, 0.1);
}

.toggle-password {
    position: absolute;
    right: 0.75rem;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1rem;
    transition: var(--transition);
    padding: 0.5rem;
}

.toggle-password:hover {
    color: var(--primary-light);
}

.password-hint {
    display: block;
    color: var(--text-muted);
    font-size: 0.75rem;
    margin-top: 0.25rem;
}

.auth-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.auth-checkbox input {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary);
}

.auth-checkbox label {
    margin-bottom: 0;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-light);
}

.auth-checkbox label a {
    color: var(--primary-light);
    text-decoration: none;
}

.auth-checkbox label a:hover {
    text-decoration: underline;
}

.auth-submit {
    margin-top: 0.5rem;
    font-size: 1rem;
}

.auth-divider {
    text-align: center;
    margin: 1.5rem 0;
    color: var(--text-muted);
    font-size: 0.875rem;
    position: relative;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    position: absolute;
    top: 50%;
    width: calc(50% - 1.5rem);
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
}

.auth-divider::before {
    left: 0;
}

.auth-divider::after {
    right: 0;
}

.auth-switch-text {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.auth-switch-text a {
    color: var(--primary-light);
    text-decoration: none;
    font-weight: 600;
}

.auth-switch-text a:hover {
    text-decoration: underline;
}

/* Alert Messages */
.auth-message {
    padding: 0.75rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.auth-message.success {
    background: rgba(34, 197, 94, 0.2);
    border: 1px solid var(--success);
    color: var(--success);
}

.auth-message.error {
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid #ef4444;
    color: #ef4444;
}

.auth-message.warning {
    background: rgba(245, 158, 11, 0.2);
    border: 1px solid #f59e0b;
    color: #f59e0b;
}

.modal-content {
    background: var(--dark-surface);
    width: 100%;
    max-width: 700px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    animation: modalSlideIn 0.3s ease;
}

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

.modal-header {
    position: relative;
}

.modal-header img {
    width: 100%;
    height: auto;
    max-height: 280px;
    object-fit: cover;
}

.modal-category {
    position: absolute;
    bottom: 15px;
    left: 15px;
    background: var(--primary);
    padding: 0.25rem 1rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 2rem;
    color: white;
    cursor: pointer;
    background: rgba(0, 0, 0, 0.5);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.close:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: scale(1.1);
}

.modal-body {
    padding: 1.5rem;
}

.modal-body h2 {
    color: var(--primary-light);
    margin-bottom: 0.75rem;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
}

.info-item i {
    font-size: 1.25rem;
    color: var(--primary-light);
}

.info-item div {
    display: flex;
    flex-direction: column;
}

.info-item strong {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.info-item span {
    font-size: 0.875rem;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

/* Footer */
footer {
    background: rgba(15, 23, 42, 0.95);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-logo i {
    font-size: 2rem;
    color: var(--primary-light);
    margin-bottom: 0.5rem;
}

.footer-logo span {
    font-size: 1.25rem;
    font-weight: 700;
    display: block;
    margin-bottom: 0.5rem;
}

.footer-logo p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer-links h4,
.footer-contact h4 {
    margin-bottom: 1rem;
    font-size: 1rem;
}

.footer-links ul {
    list-style: none;
}

.footer-links ul li {
    margin-bottom: 0.5rem;
}

.footer-links ul li a {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.875rem;
}

.footer-links ul li a:hover {
    color: var(--primary-light);
}

.footer-contact p {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-contact i {
    width: 20px;
    color: var(--primary-light);
}

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Responsive */
@media (max-width: 992px) {
    .form-wrapper {
        grid-template-columns: 1fr;
    }
    
    .form-info {
        position: static;
    }
    
    .hero-content {
        flex-direction: column;
        text-align: center;
        padding: 3rem 0;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    nav {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 80%;
        height: calc(100vh - 70px);
        background: var(--dark-surface);
        transition: var(--transition);
        z-index: 999;
    }
    
    nav.active {
        left: 0;
    }
    
    nav ul {
        flex-direction: column;
        padding: 2rem;
        gap: 1rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .eskul-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-actions {
        flex-direction: column;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        justify-content: center;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .form-container {
        padding: 1.5rem;
    }
}