/* Premium Design System for Ravi Rehab Centre */
:root {
    --primary: #4A90E2; /* Professional Blue */
    --primary-dark: #357ABD;
    --secondary: #FF9F1C; /* Warm Sun Orange */
    --accent: #FFD166; /* Light Sunlight */
    --text-main: #2D3748;
    --text-muted: #718096;
    --bg-light: #F8FAFC;
    --bg-white: #FFFFFF;
    --success: #48BB78;
    --error: #F56565;
    --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', 'Inter', sans-serif;
}

body {
    background-color: var(--bg-light);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--primary-dark);
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navbar */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(15px);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.03);
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(255,159,28,0.1);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-links a {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-muted);
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--primary);
    background: rgba(74, 144, 226, 0.05);
}

/* Dropdown */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: white;
    min-width: 200px;
    box-shadow: var(--card-shadow);
    border-radius: 15px;
    padding: 1rem;
    z-index: 1;
    top: 100%;
}

.dropdown:hover .dropdown-content {
    display: block;
    animation: slideDown 0.3s ease;
}

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

.dropdown-content a {
    display: block;
    margin-bottom: 0.5rem;
}

.lang-switch {
    background: var(--primary);
    color: white;
    padding: 0.6rem 1.25rem;
    border-radius: 50px;
    font-weight: 700;
    cursor: pointer;
    border: none;
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.2);
}

/* Hero Section */
.hero {
    position: relative;
    padding: 8rem 0 6rem;
    overflow: hidden;
    background: radial-gradient(circle at top right, rgba(255, 159, 28, 0.05), transparent),
                radial-gradient(circle at bottom left, rgba(74, 144, 226, 0.05), transparent);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(74, 144, 226, 0.1);
    color: var(--primary);
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74, 144, 226, 0.4);
}

.hero-image {
    position: relative;
    border-radius: 30px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
}

/* Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Features Grid */
.section {
    padding: 6rem 0;
}

.section-title {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-10px);
}

.card-icon {
    font-size: 2.5rem;
    color: var(--secondary);
    margin-bottom: 1.5rem;
}

/* Floating WhatsApp Button */
.whatsapp-float {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: #25D366;
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    z-index: 1001;
    transition: var(--transition);
}

.whatsapp-float:hover {
    transform: scale(1.1);
}

/* Responsive */
/* Menu Toggler */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--primary-dark);
    padding: 0.5rem;
}

/* Modal Styling */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 54, 93, 0.4);
    backdrop-filter: blur(8px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 0;
    transition: opacity 0.3s ease;
}
.modal-overlay.active {
    display: flex;
    opacity: 1;
}
.modal-content {
    background: white;
    padding: 3rem;
    border-radius: 30px;
    max-width: 500px;
    width: 90%;
    text-align: center;
    box-shadow: var(--card-shadow);
    transform: scale(0.9);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.modal-overlay.active .modal-content {
    transform: scale(1);
}
.modal-close-btn {
    margin-top: 2rem;
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.75rem 2rem;
    border-radius: 50px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.2);
    transition: var(--transition);
}
.modal-close-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* Lightbox Styling */
.lightbox-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(15px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 2500;
}
.lightbox-overlay.active {
    display: flex;
}
.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    display: flex;
    justify-content: center;
    align-items: center;
}
.lightbox-img {
    max-width: 100%;
    max-height: 80vh;
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    border: 3px solid white;
}
.lightbox-close {
    position: absolute;
    top: -50px;
    right: 0;
    color: white;
    font-size: 2.5rem;
    cursor: pointer;
    background: none;
    border: none;
    transition: var(--transition);
}
.lightbox-close:hover {
    transform: scale(1.1);
}

/* Responsive Styles */
@media (max-width: 968px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero h1 {
        font-size: 2.5rem;
    }
    .menu-toggle {
        display: block;
    }
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(15px);
        flex-direction: column;
        gap: 0;
        box-shadow: 0 15px 30px rgba(0,0,0,0.05);
        border-top: 1px solid rgba(0,0,0,0.05);
        padding: 1.5rem 0;
        align-items: center;
    }
    .nav-links.active {
        display: flex;
    }
    .nav-links li {
        width: 100%;
        text-align: center;
    }
    .nav-links a {
        display: block;
        padding: 0.75rem 1.5rem;
        width: 100%;
    }
    .dropdown-content {
        position: static;
        box-shadow: none;
        background: var(--bg-light);
        margin: 0.5rem auto;
        width: 80%;
    }
    .grid-3, .grid-2 {
        grid-template-columns: 1fr !important;
    }
}

/* Blog Card Grid */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}
.blog-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
}
.blog-card:hover {
    transform: translateY(-5px);
}
.blog-card-img {
    height: 200px;
    background: #eee;
    overflow: hidden;
}
.blog-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.blog-card-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}
.blog-card-category {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}
.blog-card-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--primary-dark);
}
.blog-card-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}
.blog-read-btn {
    align-self: flex-start;
    color: var(--primary);
    font-weight: 700;
    cursor: pointer;
    background: none;
    border: none;
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.9rem;
    transition: var(--transition);
}
.blog-read-btn:hover {
    color: var(--primary-dark);
    gap: 8px;
}

/* Category Filters */
.filter-container {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}
.filter-btn {
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
    border: 2px solid #edf2f7;
    background: white;
    font-weight: 700;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
}
.filter-btn:hover, .filter-btn.active {
    border-color: var(--primary);
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.2);
}

/* Blog Reader Modal */
.blog-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 54, 93, 0.5);
    backdrop-filter: blur(8px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 2100;
}
.blog-modal-overlay.active {
    display: flex;
}
.blog-modal-content {
    background: white;
    padding: 3rem;
    border-radius: 30px;
    max-width: 700px;
    width: 90%;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: var(--card-shadow);
    position: relative;
}
.blog-modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
}
.blog-modal-title {
    font-size: 1.75rem;
    color: var(--primary-dark);
    margin-bottom: 1.5rem;
}
.blog-modal-text {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-main);
}