/* ==========================================================================
   SDM Nursing College - Master CSS
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700&family=Plus+Jakarta+Sans:wght@300;400;500;600&display=swap');

:root {
    /* Color System */
    --color-primary: #0A2540;
    --color-secondary: #00796B;
    --color-accent: #D4AF37;
    --color-background: #FFFFFF;
    --color-surface: #F8F9FA;
    --color-text: #1D1D1F;
    --color-muted: #6E6E73;

    /* Fluid Typography (Clamp) */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    
    --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
    --text-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
    --text-lg: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
    --text-xl: clamp(1.5rem, 1.2rem + 1.5vw, 2.25rem);
    --text-2xl: clamp(2rem, 1.5rem + 2.5vw, 3rem);
    --text-hero: clamp(2.5rem, 1.5rem + 5vw, 5.5rem);

    /* Spacing & Layout */
    --spacing-sm: 1rem;
    --spacing-md: 2.5rem;
    --spacing-lg: 5rem;
    --spacing-xl: 10rem;
    --container-width: 1440px;
    
    /* Transitions */
    --transition-smooth: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background-color: var(--color-background);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-primary);
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 5%;
}

/* Header & Navigation */
.site-header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
    padding: 1.5rem 0;
    transition: var(--transition-smooth);
    background: transparent;
}

.site-header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
}

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

.logo-text {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    color: var(--color-background);
    text-decoration: none;
    transition: var(--transition-smooth);
}

.site-header.scrolled .logo-text,
.site-header.scrolled .nav-links a {
    color: var(--color-primary);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-links a {
    color: var(--color-background);
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: 500;
    transition: var(--transition-smooth);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-size: var(--text-sm);
    font-weight: 600;
    text-decoration: none;
    border-radius: 4px;
    transition: var(--transition-smooth);
}

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

/* Cinematic Hero */
.hero-section {
    position: relative;
    height: 100vh;
    width: 100%;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-video-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -2;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(10,37,64,0.6) 0%, rgba(10,37,64,0.2) 100%);
    z-index: -1;
}

.hero-content {
    color: var(--color-background);
    max-width: 800px;
}

.hero-content h1 {
    color: var(--color-background);
    font-size: var(--text-hero);
    margin-bottom: 1.5rem;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 1s forwards 0.5s;
}

/* Leadership Section (Editorial) */
.leadership-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-surface);
}

.leadership-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.leadership-image-wrapper {
    position: relative;
    border-radius: 4px;
    overflow: hidden;
}

.leadership-image-wrapper img {
    width: 100%;
    height: auto;
    display: block;
}

.leadership-text h2 {
    font-size: var(--text-2xl);
    margin-bottom: 1rem;
}

.leadership-title {
    font-size: var(--text-lg);
    color: var(--color-secondary);
    margin-bottom: 2rem;
}

/* Animations */
@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links { display: none; /* Mobile menu JS toggle needed here */ }
    .leadership-grid { grid-template-columns: 1fr; }
}