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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

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

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 700;
    color: #667eea;
}

.nav-logo i {
    font-size: 28px;
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: #666;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #667eea;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: #667eea;
    border-radius: 1px;
}

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    min-height: 100vh;
    padding: 100px 20px 50px;
    gap: 60px;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
    font-weight: 400;
}

.cta-button {
    background: linear-gradient(45deg, #ff6b6b, #ee5a24);
    color: white;
    border: none;
    padding: 15px 30px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 107, 107, 0.4);
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.floating-card {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    transform: rotate(5deg);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: rotate(5deg) translateY(0px); }
    50% { transform: rotate(5deg) translateY(-20px); }
}

.profile-preview {
    text-align: center;
}

.profile-avatar {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: 32px;
}

.profile-preview h3 {
    color: #333;
    margin-bottom: 10px;
    font-weight: 600;
}

.profile-preview p {
    color: #666;
    margin-bottom: 20px;
}

.interests-tags {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
}

.tag {
    background: #f0f0f0;
    color: #666;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 40px;
    border-radius: 20px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    position: absolute;
    top: 20px;
    right: 25px;
}

.close:hover {
    color: #000;
}

.modal h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
    font-weight: 600;
}

/* Form Styles */
.registration-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 600;
    color: #555;
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 16px;
    border: 2px solid #e1e5e9;
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

.interests-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
    margin-top: 10px;
}

.interest-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.interest-item:hover {
    border-color: #667eea;
    background: #f8f9ff;
}

.interest-item.selected {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

.age-range {
    display: flex;
    align-items: center;
    gap: 10px;
}

.age-range input {
    width: 80px;
}

.location-btn {
    background: #667eea;
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background 0.3s ease;
}

.location-btn:hover {
    background: #5a6fd8;
}

.submit-btn {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 15px;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
}

.submit-btn:hover {
    transform: translateY(-2px);
}

/* Browse Section */
.browse-section {
    background: white;
    padding: 80px 0;
    min-height: 100vh;
}

.browse-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: #333;
    font-weight: 600;
}

.filters {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.filter-select {
    padding: 12px 20px;
    border: 2px solid #e1e5e9;
    border-radius: 10px;
    font-size: 1rem;
    min-width: 150px;
}

.filter-btn {
    background: #667eea;
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background 0.3s ease;
}

.filter-btn:hover {
    background: #5a6fd8;
}

.profiles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.profile-card {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #f0f0f0;
}

.profile-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.profile-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
}

.profile-avatar-small {
    width: 60px;
    height: 60px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
}

.profile-info h3 {
    color: #333;
    margin-bottom: 5px;
    font-weight: 600;
}

.profile-info p {
    color: #666;
    font-size: 0.9rem;
}

.profile-bio {
    color: #555;
    margin-bottom: 20px;
    line-height: 1.6;
}

.profile-interests {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.profile-actions {
    display: flex;
    gap: 10px;
}

.action-btn {
    flex: 1;
    padding: 10px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.like-btn {
    background: #ff6b6b;
    color: white;
}

.like-btn:hover {
    background: #ee5a24;
}

.message-btn {
    background: #667eea;
    color: white;
}

.message-btn:hover {
    background: #5a6fd8;
}

/* Footer */
.footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 30px 0;
}

/* Loading Spinner */
.loading-spinner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 3000;
}

.loading-spinner.hidden {
    display: none;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 100px;
    right: 20px;
    z-index: 4000;
}

.toast {
    background: white;
    color: #333;
    padding: 15px 20px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: slideIn 0.3s ease;
}

.toast.success {
    border-left: 4px solid #28a745;
}

.toast.error {
    border-left: 4px solid #dc3545;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 120px 20px 50px;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .nav-menu {
        display: none;
    }
    
    .modal-content {
        margin: 10% auto;
        padding: 20px;
        width: 95%;
    }
    
    .filters {
        flex-direction: column;
        align-items: center;
    }
    
    .profiles-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .cta-button {
        padding: 12px 24px;
        font-size: 1rem;
    }
}