:root {
    /* Color Palette - Higher Visibility */
    --primary: #0041C2;
    /* Vibrant, authoritative blue */
    --primary-dark: #002D8B;
    --accent: #00f2ff;
    /* Blinding Cyan for Urgency */
    --danger: #ef4444;
    /* Fear/Urgency Red */
    --dark: #020617;
    /* Void Dark */
    --light: #f1f5f9;
    --white: #ffffff;
    --gray: #334155;
    /* Slate 700 for perfect contrast on light colors */
    --text-muted: #64748b;
    --text-muted-light: rgba(255, 255, 255, 0.9);
    --success: #10b981;
    --warning: #f59e0b;

    /* Gradients */
    --grad-primary: linear-gradient(135deg, var(--primary), var(--primary-dark));
    --grad-accent: linear-gradient(135deg, var(--accent), var(--primary));
    --grad-dark: linear-gradient(135deg, var(--dark), #1e293b);

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    /* Shadow */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--dark);
    background-color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4 {
    font-family: 'Outfit', sans-serif;
    line-height: 1.2;
}

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

ul {
    list-style: none;
}

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

/* Sections */
section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.5rem;
    font-weight: 700;
}

.section-subtitle {
    text-align: center;
    color: var(--gray);
    max-width: 700px;
    margin: -2rem auto 3rem;
}

.section-subtitle strong {
    color: var(--dark);
    font-weight: 700;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    gap: 0.5rem;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--grad-primary);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(0, 74, 173, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 74, 173, 0.4);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

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

/* Highlight Buttons */
.btn-highlight-desktop {
    background: linear-gradient(135deg, #00c6ff, #0072ff);
    color: white;
    padding: 1.2rem 2.5rem;
    font-size: 1.2rem;
    border-radius: 12px;
    box-shadow: 0 10px 20px rgba(0, 114, 255, 0.4);
    position: relative;
    overflow: hidden;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn-highlight-desktop:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 15px 30px rgba(0, 114, 255, 0.6);
}

.btn-highlight-desktop::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s;
}

.btn-highlight-desktop:hover::after {
    opacity: 1;
}

.btn-highlight-mobile {
    background: #000000;
    color: white;
    padding: 1.2rem 2.5rem;
    font-size: 1.2rem;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
    border: 2px solid #333;
}

.btn-highlight-mobile:hover {
    transform: translateY(-5px) scale(1.05);
    background: #111;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.5);
}

.btn-highlight-mobile i {
    font-size: 1.8rem;
    color: #3DDC84;
    /* Android Green */
}

/* Header & Nav */
header {
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

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

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--dark);
    cursor: pointer;
    z-index: 1001;
    transition: color 0.3s ease;
}

.menu-toggle:hover {
    color: var(--primary);
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    font-family: 'Outfit', sans-serif;
}

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

.nav-links li a:hover {
    color: var(--primary);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(rgba(2, 6, 23, 0.75), rgba(2, 6, 23, 0.6)), url('https://images.unsplash.com/photo-1523240795612-9a054b0db644?auto=format&fit=crop&q=80&w=2070') center/cover;
    padding-top: 120px;
    color: var(--white);
}

.hero-content {
    max-width: 800px;
    animation: fadeInUp 0.8s ease-out;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    color: var(--white);
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    background: none;
    -webkit-text-fill-color: var(--white);
}

.hero .sub {
    font-size: 1.35rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2.5rem;
    font-weight: 500;
}

.highlight {
    color: var(--accent);
    text-shadow: 0 0 20px rgba(0, 242, 254, 0.3);
}

.hero-btns {
    display: flex;
    gap: 1.5rem;
}

/* Problems Section */
.problems {
    background: var(--light);
}

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

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

.problem-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.problem-card i {
    font-size: 2.5rem;
    color: var(--accent);
    margin-bottom: 1.5rem;
}

/* Solution & Programs */
.programs-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.program-card {
    background: var(--grad-dark);
    color: var(--white);
    padding: 3rem;
    border-radius: 30px;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.program-card::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: var(--grad-accent);
    opacity: 0.1;
    border-radius: 50%;
    z-index: -1;
}

/* Platform Section */
.platform {
    background: var(--dark);
    color: var(--white);
}

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

.feature-list {
    display: grid;
    gap: 1.5rem;
}

.feature-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.feature-item i {
    color: var(--accent);
    font-size: 1.2rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Course Showcase Section */
.course-showcase {
    padding: 100px 0;
    background: var(--white);
}

.course-category-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
    padding-bottom: 1.5rem;
    color: var(--dark);
    font-family: 'Outfit', sans-serif;
}

.course-category-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--grad-primary);
    border-radius: 2px;
}

.course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1.5rem;
    margin-bottom: 5rem;
}

.course-card-mini {
    background: var(--light);
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: 15px;
    padding: 2rem 1rem;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
}

.course-card-mini:hover {
    transform: translateY(-8px);
    background: var(--white);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.course-card-mini i {
    font-size: 2.2rem;
    color: var(--primary);
}

.course-card-mini span {
    font-weight: 700;
    font-size: 1rem;
    color: var(--dark);
    line-height: 1.2;
}

.badge-diploma {
    background: rgba(0, 102, 255, 0.1);
    color: var(--primary);
}

.badge-placement {
    background: rgba(0, 242, 254, 0.1);
    color: var(--accent);
}

.badge-hot {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    header {
        padding: 0.6rem 0;
    }

    .container {
        padding: 0 1rem;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .logo {
        font-size: 1.4rem;
        /* Professional weight */
    }

    header .btn-primary {
        display: none;
        /* Streamline for Pro look */
    }

    .menu-toggle {
        display: block;
    }

    .nav-links {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background: var(--white);
        padding: 80px 40px;
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.1);
        transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 1000;
        gap: 2rem;
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links li a {
        font-size: 1.2rem;
        font-weight: 700;
        color: var(--dark);
    }

    .programs-grid,
    .platform-grid {
        grid-template-columns: 1fr;
    }

    .hero-btns {
        flex-direction: column;
    }
}