/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700;800&family=Open+Sans:wght@300;400;600&display=swap');

/* --- Brand Variables (Mild Dark Theme) --- */
:root {
    --bg-base: #0f172a;        /* Deep Slate (Main Background) */
    --bg-surface: #1e293b;     /* Slate 800 (Cards & Sections) */
    --bg-surface-light: #334155; /* Slate 700 (Hover states & borders) */
    
    --accent-primary: #f59e0b; /* Educational Amber */
    --accent-hover: #d97706;
    --accent-blue: #3b82f6;    /* Secondary Tech Blue */
    
    --text-main: #f8fafc;      /* Off-White */
    --text-muted: #94a3b8;     /* Slate 400 (Paragraphs) */
    
    --border-color: #334155;
    --transition: 0.3s ease-in-out;
}

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

body {
    font-family: 'Open Sans', sans-serif;
    background-color: var(--bg-base);
    color: var(--text-main);
    line-height: 1.7;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

h1, h2, h3, h4 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.2;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 5%;
}

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

/* --- Top Bar --- */
.top-bar {
    background-color: #020617; /* Very Dark Slate */
    font-size: 0.85rem;
    color: var(--text-muted);
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

.top-bar-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 5%;
    display: flex;
    justify-content: flex-end;
    gap: 25px;
}

.top-bar a {
    color: var(--text-muted);
}
.top-bar a:hover {
    color: var(--accent-primary);
}

/* --- Header & Navigation --- */
header {
    background-color: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.header-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.logo-container h1 {
    font-size: 1.8rem;
    color: var(--text-main);
    letter-spacing: -0.5px;
}
.logo-container h1 span {
    color: var(--accent-primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    color: var(--text-main);
    font-weight: 600;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--accent-primary);
}

/* Buttons */
.btn-primary, .btn-secondary, .btn-outline {
    display: inline-block;
    padding: 12px 28px;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 4px;
    font-size: 0.9rem;
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background-color: var(--accent-primary);
    color: #000;
    border: 2px solid var(--accent-primary);
}
.btn-primary:hover {
    background-color: var(--accent-hover);
    border-color: var(--accent-hover);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-main);
    border: 2px solid var(--bg-surface-light);
}
.btn-secondary:hover {
    border-color: var(--text-main);
}

.btn-outline {
    border: 2px solid var(--accent-primary);
    color: var(--accent-primary);
}
.btn-outline:hover {
    background-color: var(--accent-primary);
    color: #000;
}

.btn-large {
    padding: 16px 40px;
    font-size: 1rem;
}

/* Mobile Hamburger Menu */
.nav-toggle { display: none; }
.nav-toggle-label { display: none; cursor: pointer; }
.nav-toggle-label span, .nav-toggle-label span::before, .nav-toggle-label span::after {
    display: block; background: var(--text-main); height: 2px; width: 24px; position: relative; transition: var(--transition);
}
.nav-toggle-label span::before, .nav-toggle-label span::after { content: ''; position: absolute; }
.nav-toggle-label span::before { bottom: 8px; }
.nav-toggle-label span::after { top: 8px; }

/* --- Hero Section --- */
#hero {
    position: relative;
    min-height: 85vh;
    display: flex;
    align-items: center;
    background: url('https://images.unsplash.com/photo-1524178232363-1fb2b075b655?auto=format&fit=crop&q=80&w=1600') center/cover no-repeat;
    padding: 0 5%;
}

.hero-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(90deg, rgba(15,23,42,0.95) 0%, rgba(15,23,42,0.7) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
}

.badge {
    display: inline-block;
    background-color: rgba(59, 130, 246, 0.2); /* Tech Blue Tint */
    color: var(--accent-blue);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
    border: 1px solid rgba(59, 130, 246, 0.4);
}

.hero-content h2 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    line-height: 1.1;
}

.hero-content p {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 35px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

/* --- Services Grid --- */
.section-header {
    text-align: center;
    margin-bottom: 60px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-muted);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 40px 30px;
    border-radius: 8px;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-primary);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
    background: var(--bg-base);
    width: 60px;
    height: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 8px;
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: 15px;
}

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

/* --- Split Layout (Why Us) --- */
.split-layout {
    display: flex;
    align-items: center;
    gap: 60px;
}

.split-image, .split-text {
    flex: 1;
}

.split-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 20px 20px 0px var(--bg-base);
}

.section-tag {
    color: var(--accent-primary);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.85rem;
    display: block;
    margin-bottom: 10px;
}

.split-text h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.split-text p {
    color: var(--text-muted);
    margin-bottom: 25px;
    font-size: 1.05rem;
}

.benefit-list {
    list-style: none;
    margin-bottom: 35px;
}

.benefit-list li {
    margin-bottom: 15px;
    color: var(--text-main);
    font-size: 0.95rem;
}

.benefit-list strong {
    color: var(--accent-primary);
}

/* --- Partner Schools --- */
.school-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
}

.school-card {
    background-color: var(--bg-surface);
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.school-card:hover {
    border-color: var(--accent-blue);
}

.school-logo {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.school-card h3 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.school-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* --- CTA Section --- */
#cta-section {
    background: linear-gradient(135deg, var(--bg-surface) 0%, var(--bg-base) 100%);
    padding: 100px 5%;
    text-align: center;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.cta-container {
    max-width: 800px;
    margin: 0 auto;
}

.cta-container h2 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.cta-container p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 40px;
}

/* --- Footer --- */
footer {
    background-color: #020617; /* Darkest Slate */
    padding: 80px 0 20px;
    border-top: 4px solid var(--accent-primary);
}

.footer-layout {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 50px;
    margin-bottom: 50px;
    padding: 0 5%;
}

.brand-col h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    letter-spacing: -0.5px;
}
.brand-col h3 span { color: var(--accent-primary); }

.brand-col p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 15px;
    max-width: 350px;
}

.footer-col h4 {
    font-size: 1.1rem;
    margin-bottom: 25px;
    color: var(--text-main);
}

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

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a, .footer-col p {
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: var(--accent-primary);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* --- Mobile Responsive Rules --- */
@media (max-width: 992px) {
    /* Hamburger Menu Logic */
    .nav-toggle-label { display: block; margin-right: 10px; }
    
    nav {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--bg-surface);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease-out;
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-links {
        flex-direction: column;
        align-items: center;
        padding: 0;
        margin: 20px 0;
    }
    
    .nav-toggle:checked ~ nav {
        max-height: 400px;
        padding-bottom: 20px;
    }

    .header-actions { display: none; } /* Hide partner button to save space on mobile header */

    /* Layout Adjustments */
    .top-bar-container { justify-content: center; flex-wrap: wrap; text-align: center; gap: 10px;}
    
    .hero-content h2 { font-size: 2.8rem; }
    .hero-buttons { flex-direction: column; }
    
    .split-layout { flex-direction: column; text-align: center; gap: 40px; }
    .split-image img { box-shadow: none; }
    .benefit-list { text-align: left; display: inline-block; }
    
    .footer-layout { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
    .container { padding: 60px 5%; }
    .footer-layout { grid-template-columns: 1fr; text-align: center; }
    .brand-col p { margin: 0 auto 15px; }
    .benefit-list { text-align: center; }
}