/* ===== CSS Variables & Tokens ===== */
:root {
    --primary-color: #0d47a1; /* Deep Trust Blue */
    --primary-light: #1976d2;
    --primary-dark: #002171;
    --accent-color: #00bfa5; /* Vibrant Medical Green/Teal */
    
    --text-main: #1e293b;
    --text-muted: #64748b;
    --text-light: #f8fafc;
    
    --bg-main: #ffffff;
    --bg-light: #f1f5f9;
    --bg-dark: #0f172a;
    
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
    
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ===== Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-main);
    background-color: var(--bg-main);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

.section {
    padding: 6rem 0;
}

.bg-light {
    background-color: var(--bg-light);
}

/* ===== Typography ===== */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-main);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.section-title span {
    color: var(--primary-color);
}

.section-desc {
    color: var(--text-muted);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto 3rem;
}

.center {
    text-align: center;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    border-radius: 50px;
    transition: all var(--transition-smooth);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-sm {
    padding: 0.5rem 1.25rem;
    font-size: 0.9rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(13, 71, 161, 0.2);
}

.btn-outline {
    background-color: transparent;
    border-color: white;
    color: white;
}

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

/* ===== Navbar (Glassmorphism) ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    transition: all var(--transition-smooth);
    padding: 1rem 0;
}

.navbar.scrolled {
    padding: 0.5rem 0;
    box-shadow: var(--glass-shadow);
}

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

.logo {
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.logo-text {
    color: var(--primary-dark);
}

.text-white {
    color: white;
}

.logo-dot {
    color: var(--accent-color);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a:not(.btn) {
    font-weight: 500;
    color: var(--text-main);
    position: relative;
}

.nav-links a:not(.btn)::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--accent-color);
    transition: width var(--transition-fast);
}

.nav-links a:not(.btn):hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background-color: var(--primary-dark);
    transition: var(--transition-fast);
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, rgba(13,71,161,0.95), rgba(0,33,113,0.85)), url('https://images.unsplash.com/photo-1586773860418-d37222d8fce3?q=80&w=2000&auto=format&fit=crop') center/cover;
    color: white;
    padding-top: 60px;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero-title {
    font-size: 4rem;
    color: white;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease both;
}

.hero-title span {
    color: var(--accent-color);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2.5rem;
    max-width: 600px;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    animation: fadeInUp 1s ease 0.4s both;
}

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

/* ===== Stats Section ===== */
.stats-section {
    background-color: white;
    padding: 3rem 0;
    margin-top: -50px;
    position: relative;
    z-index: 10;
}

.stats-container {
    display: flex;
    justify-content: space-between;
    background: white;
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 20px 40px rgba(0,0,0,0.05);
}

.stat-card {
    text-align: center;
    padding: 0 1rem;
}

.stat-number {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-muted);
    font-weight: 500;
}

/* ===== About Section ===== */
.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.feature-list {
    margin-top: 2rem;
}

.feature-list li {
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.about-image {
    position: relative;
    height: 500px;
    border-radius: 20px;
    background: url('https://images.unsplash.com/photo-1516549655169-df83a0774514?q=80&w=1000&auto=format&fit=crop') center/cover;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.glass-card {
    position: absolute;
    bottom: -20px;
    left: -20px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    padding: 1.5rem 2rem;
    border-radius: 12px;
    box-shadow: var(--glass-shadow);
    color: var(--primary-dark);
    font-weight: 700;
    font-size: 1.2rem;
}

/* ===== Specialties (Cards) ===== */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.specialty-card {
    background: white;
    border-radius: 16px;
    padding: 2.5rem 2rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.03);
    transition: var(--transition-smooth);
    border: 1px solid rgba(0,0,0,0.02);
    position: relative;
    overflow: hidden;
}

.specialty-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--accent-color);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-smooth);
}

.specialty-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}

.specialty-card:hover::before {
    transform: scaleX(1);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.specialty-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-dark);
}

.specialty-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* ===== CTA Section ===== */
.cta-section {
    background: url('https://images.unsplash.com/photo-1576091160399-112ba8d25d1d?q=80&w=2000&auto=format&fit=crop') center/cover fixed;
    position: relative;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(15, 23, 42, 0.8); /* Dark overlay */
}

.cta-container {
    position: relative;
    z-index: 2;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.cta-content h2 {
    color: white;
    font-size: 2.5rem;
}

.cta-content h2 span {
    color: var(--accent-color);
}

.cta-content p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.1rem;
    max-width: 600px;
}

/* ===== Footer ===== */
.footer {
    background-color: var(--bg-dark);
    color: white;
    padding: 5rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-brand p {
    color: var(--text-muted);
    margin-top: 1rem;
    max-width: 300px;
}

.footer h4 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    color: white;
}

.footer-links ul li {
    margin-bottom: 0.75rem;
}

.footer-links ul li a {
    color: var(--text-muted);
}

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

.footer-contact p {
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    transition: var(--transition-fast);
}

.social-links a:hover {
    background: var(--accent-color);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ===== Responsive Design ===== */
@media (max-width: 968px) {
    .stats-container {
        flex-wrap: wrap;
        gap: 2rem;
        justify-content: center;
    }
    
    .about-container {
        grid-template-columns: 1fr;
    }

    .cta-container {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none; /* simple hidden for mobile, can add JS toggle */
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .section {
        padding: 4rem 0;
    }
    
    .cta-container {
        padding: 2rem;
    }
}