/* ========================================
   SUPREMACY.INSTITUTE - STYLESHEET
   Academic Excellence & Institutional Design
   ======================================== */

/* Color Palette */
:root {
    --color-bg-primary: #f9fafb;
    --color-bg-secondary: #f3f4f6;
    --color-accent-primary: #1e3a5f;
    --color-accent-secondary: #a78959;
    --color-text-primary: #0f172a;
    --color-text-secondary: #64748b;
    --color-border: #e2e8f0;
    --color-accent-accent: #2563eb;
    
    --font-serif: 'Lora', serif;
    --font-sans: 'Open Sans', sans-serif;
    --font-mono: 'Inconsolata', monospace;
    
    --transition-default: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-fast: all 0.15s ease-out;
}

/* ========================================
   RESET & BASE STYLES
   ======================================== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    font-size: clamp(0.95rem, 1.2vw, 1.05rem);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 700;
    color: var(--color-text-primary);
    line-height: 1.2;
}

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

a:hover {
    color: var(--color-accent-primary);
    text-decoration: underline;
}

button {
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition-fast);
}

/* ========================================
   HEADER & NAVIGATION
   ======================================== */

.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(8px);
    background-color: rgba(249, 250, 251, 0.95);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-serif);
    font-size: clamp(1.2rem, 2vw, 1.8rem);
    font-weight: 700;
    color: var(--color-accent-primary);
    letter-spacing: 0.01em;
}

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

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    position: relative;
    transition: var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-accent-primary);
    text-decoration: none;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent-secondary);
    transition: width 0.3s ease-out;
}

.nav-link:hover::after {
    width: 100%;
}

.header-divider {
    height: 2px;
    background: linear-gradient(to right, transparent, var(--color-border) 20%, var(--color-border) 80%, transparent);
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
    padding: 4rem 2rem;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(30, 58, 95, 0.05) 0%, transparent 100%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(2.5rem, 10vw, 4rem);
    font-weight: 700;
    color: var(--color-accent-primary);
    letter-spacing: 0.02em;
    margin-bottom: 1.5rem;
    font-family: var(--font-serif);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    color: var(--color-text-secondary);
    margin-bottom: 2.5rem;
    font-weight: 400;
    letter-spacing: 0.005em;
}

.cta-button {
    background-color: var(--color-accent-primary);
    color: white;
    padding: 0.9rem 2.5rem;
    font-size: 1rem;
    border-radius: 4px;
    transition: var(--transition-fast);
}

.cta-button:hover {
    background-color: var(--color-accent-secondary);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(30, 58, 95, 0.25);
}

.hero-accent-bar {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 2px;
    height: 200px;
    background-color: var(--color-accent-secondary);
}

/* ========================================
   SECTION STYLES
   ======================================== */

section {
    max-width: 1400px;
    margin: 0 auto;
    padding: 5rem 2rem;
    animation: fadeInUp 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

section:nth-child(n) {
    opacity: 0;
}

.section-header {
    margin-bottom: 3.5rem;
    text-align: center;
}

.section-header h2 {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    margin-bottom: 1rem;
    color: var(--color-accent-primary);
}

.section-accent-line {
    height: 2px;
    width: 100px;
    background-color: var(--color-accent-secondary);
    margin: 1.5rem auto 0;
}

/* ========================================
   PROGRAMS SECTION
   ======================================== */

.programs-section {
    background-color: var(--color-bg-primary);
}

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

.program-card {
    background-color: white;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 2rem;
    text-align: center;
    transition: var(--transition-default);
}

.program-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 30px rgba(30, 58, 95, 0.15);
    border-color: var(--color-accent-secondary);
}

.card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg-secondary);
    border-radius: 4px;
    transition: var(--transition-fast);
}

.program-card:hover .card-icon {
    background-color: var(--color-accent-primary);
    color: white;
}

.icon-svg {
    width: 100%;
    height: 100%;
    color: var(--color-accent-primary);
}

.program-card:hover .icon-svg {
    color: white;
}

.program-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--color-accent-primary);
}

.program-card p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    font-size: 0.95rem;
}

/* ========================================
   ACHIEVEMENTS SECTION
   ======================================== */

.achievements-section {
    background-color: var(--color-bg-secondary);
}

.achievements-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
    margin-top: 2rem;
}

.achievement-metric {
    background-color: white;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 2.5rem 2rem;
    text-align: center;
    transition: var(--transition-default);
    position: relative;
}

.achievement-metric::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 2px;
    background-color: var(--color-accent-secondary);
    border-radius: 1px;
}

.achievement-metric:hover {
    box-shadow: 0 10px 25px rgba(30, 58, 95, 0.1);
    border-color: var(--color-accent-secondary);
}

.metric-number {
    font-family: var(--font-mono);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    color: var(--color-accent-primary);
    margin-bottom: 0.5rem;
    line-height: 1;
}

.stat-value {
    display: inline-block;
}

.metric-label {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 0.8rem;
}

.metric-description {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ========================================
   FACULTY SECTION
   ======================================== */

.faculty-section {
    background-color: var(--color-bg-primary);
}

.faculty-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    margin-top: 2rem;
}

.faculty-card {
    background-color: white;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 2.5rem;
    transition: var(--transition-default);
}

.faculty-card:hover {
    box-shadow: 0 12px 30px rgba(30, 58, 95, 0.12);
    border-color: var(--color-accent-secondary);
}

.faculty-role {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-accent-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 1rem;
    padding: 0.3rem 0.8rem;
    background-color: var(--color-bg-secondary);
    border-radius: 2px;
}

.faculty-card h3 {
    font-size: 1.3rem;
    margin: 1rem 0 0.5rem;
    color: var(--color-accent-primary);
}

.faculty-discipline {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-accent-accent);
    margin-bottom: 1rem;
    font-style: italic;
}

.faculty-bio {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* ========================================
   ADMISSIONS SECTION
   ======================================== */

.admissions-section {
    background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
}

.admissions-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 3rem;
    margin-top: 2rem;
}

.admissions-card {
    background-color: white;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 2.5rem;
    transition: var(--transition-default);
}

.admissions-card:hover {
    box-shadow: 0 12px 30px rgba(30, 58, 95, 0.15);
    border-color: var(--color-accent-secondary);
    transform: translateY(-4px);
}

.admissions-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--color-accent-primary);
}

.admissions-card p {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.requirements-list {
    list-style: none;
    margin: 1.5rem 0 2rem;
}

.requirements-list li {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    padding: 0.6rem 0 0.6rem 1.5rem;
    position: relative;
    line-height: 1.6;
}

.requirements-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--color-accent-secondary);
    font-weight: bold;
}

.secondary-button {
    background-color: var(--color-accent-primary);
    color: white;
    padding: 0.8rem 2rem;
    font-size: 0.95rem;
    border-radius: 4px;
    transition: var(--transition-fast);
    width: 100%;
}

.secondary-button:hover {
    background-color: var(--color-accent-secondary);
    transform: translateY(-2px);
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
    background-color: var(--color-accent-primary);
    color: white;
    padding: 3rem 2rem 1.5rem;
    margin-top: 5rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: white;
}

.footer-section p {
    font-size: 0.9rem;
    line-height: 1.7;
    opacity: 0.9;
    margin-bottom: 1rem;
}

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

.footer-section li {
    margin-bottom: 0.6rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition-fast);
    font-size: 0.9rem;
}

.footer-section a:hover {
    color: white;
    text-decoration: none;
}

.external-link::after {
    content: ' →';
    margin-left: 0.3rem;
}

.footer-divider {
    height: 1px;
    background-color: rgba(255, 255, 255, 0.2);
    margin: 1.5rem 0;
}

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    text-align: center;
    font-size: 0.85rem;
    opacity: 0.8;
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    0% {
        opacity: 0;
        transform: translateX(-30px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes countUp {
    0% {
        opacity: 0;
    }
    100% {
        opacity: 1;
    }
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
        padding: 1.2rem 1rem;
    }

    .nav {
        gap: 1rem;
        font-size: 0.85rem;
    }

    .logo {
        font-size: 1rem;
    }

    section {
        padding: 3rem 1.5rem;
    }

    .hero {
        min-height: 80vh;
        padding: 2rem 1rem;
    }

    .hero-accent-bar {
        display: none;
    }

    .programs-grid,
    .achievements-container,
    .faculty-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .admissions-content {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .program-card,
    .achievement-metric,
    .faculty-card,
    .admissions-card {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section-header h2 {
        font-size: 1.5rem;
    }

    .cta-button,
    .secondary-button {
        padding: 0.7rem 1.5rem;
        font-size: 0.9rem;
    }

    .metric-number {
        font-size: 2rem;
    }

    .nav {
        display: none;
    }
}

/* ========================================
   SCROLL REVEAL & INTERSECTION OBSERVER
   ======================================== */

section[data-visible="false"] {
    opacity: 0;
}

section[data-visible="true"] {
    animation: fadeInUp 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}