/* ================= THEME VARIABLES (From Reference) ================= */
    :root {
        --primary: #0A2647;      /* Deep Navy */
        --secondary: #FF7B54;    /* Soft Coral */
        --accent: #144272;       /* Medium Blue */
        --light: #F4F7FA;        /* Light Grey-Blue */
        --white: #FFFFFF;
        --dark: #1F1F1F;
        --gray: #666666;
        --border: #E1E8EF;
        --shadow: 0 10px 30px rgba(0,0,0,0.08);
        --transition: all 0.3s ease;
        --radius: 12px;
    }

    /* ================= RESET & BASE ================= */
    * { margin: 0; padding: 0; box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
        font-family: 'Open Sans', sans-serif;
        color: var(--dark);
        background-color: var(--white);
        line-height: 1.6;
    }
    h1, h2, h3, h4, h5 { font-family: 'Poppins', sans-serif; color: var(--primary); font-weight: 600; }
    a { text-decoration: none; transition: var(--transition); }
    ul { list-style: none; }
    .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
    .section-padding { padding: 80px 0; }
    .bg-light { background-color: var(--light); }
    .text-center { text-align: center; }

    /* ================= BUTTONS ================= */
    .btn {
        display: inline-block;
        padding: 14px 32px;
        border-radius: 50px;
        font-weight: 600;
        text-transform: uppercase;
        font-size: 0.85rem;
        letter-spacing: 0.5px;
        cursor: pointer;
        border: none;
        transition: var(--transition);
    }
    .btn-primary {
        background-color: var(--secondary);
        color: var(--white);
        box-shadow: 0 4px 15px rgba(255, 123, 84, 0.3);
    }
    .btn-primary:hover { 
        background-color: #e0603a; 
        transform: translateY(-3px); 
        box-shadow: 0 6px 20px rgba(255, 123, 84, 0.4);
    }
    .btn-outline {
        background: transparent;
        border: 2px solid var(--white);
        color: var(--white);
    }
    .btn-outline:hover { background: var(--white); color: var(--primary); }

    /* ================= HEADER ================= */
    header {
        background: var(--white);
        box-shadow: 0 2px 15px rgba(0,0,0,0.05);
        position: sticky;
        top: 0;
        z-index: 1000;
    }

    /* ================= HERO ================= */
    .hero {
        background-size: cover;
        background-position: center;
        padding: 100px 0 140px;
        color: var(--white);
        text-align: center;
    }
    .hero h1 { color: var(--white); font-size: 3rem; margin-bottom: 20px; line-height: 1.2; }
    .hero p { font-size: 1.1rem; max-width: 800px; margin: 0 auto 40px; opacity: 0.9; }

    /* ================= FEATURES STRIP ================= */
    .features-strip {
        background: var(--white);
        padding: 40px 20px;
        margin-top: -60px;
        position: relative;
        z-index: 10;
        border-radius: var(--radius);
        box-shadow: var(--shadow);
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
    }
    .feature-item { text-align: center; border-right: 1px solid var(--border); padding: 10px; }
    .feature-item:last-child { border: none; }
    .feature-item i { font-size: 1.8rem; color: var(--secondary); margin-bottom: 12px; }
    .feature-item h4 { font-size: 1rem; margin-bottom: 5px; }
    .feature-item p { font-size: 0.85rem; color: var(--gray); }

    /* ================= SYLLABUS CARDS ================= */
    .section-header { text-align: center; margin-bottom: 50px; }
    .section-header h2 { font-size: 2.2rem; margin-bottom: 15px; }
    .header-line { width: 60px; height: 4px; background: var(--secondary); margin: 0 auto 15px; border-radius: 2px; }

    .syllabus-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
        gap: 30px;
    }
    .syllabus-card {
        background: var(--white);
        border-radius: var(--radius);
        box-shadow: var(--shadow);
        overflow: hidden;
        border: 1px solid var(--border);
        transition: var(--transition);
    }
    .syllabus-card:hover { transform: translateY(-8px); border-color: var(--secondary); }
    .card-head {
        background: var(--primary);
        color: var(--white);
        padding: 25px;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    .card-head h3 { color: var(--white); font-size: 1.2rem; margin: 0; }
    .card-body { padding: 30px; }
    .card-body h4 { font-size: 0.95rem; text-transform: uppercase; color: var(--secondary); margin-bottom: 15px; letter-spacing: 1px; }
    
    .topics-list li {
        position: relative;
        padding-left: 25px;
        margin-bottom: 12px;
        font-size: 0.9rem;
        color: var(--gray);
        border-bottom: 1px solid #f8fafc;
        padding-bottom: 8px;
    }
    .topics-list li::before {
        content: "\f058";
        font-family: "Font Awesome 6 Free";
        font-weight: 900;
        position: absolute;
        left: 0;
        color: var(--secondary);
    }

    .practical-box {
        background: var(--light);
        padding: 20px;
        border-radius: 8px;
        margin-top: 20px;
    }
    .practical-box h5 { font-size: 0.9rem; margin-bottom: 10px; }
    .practical-list { display: flex; flex-wrap: wrap; gap: 8px; }
    .tag { background: var(--white); padding: 4px 12px; border-radius: 4px; font-size: 0.75rem; border: 1px solid var(--border); font-weight: 600; }

    /* ================= INTERNSHIP & SKILLS ================= */
    .intern-banner {
        background: var(--primary);
        border-radius: var(--radius);
        padding: 50px;
        color: var(--white);
        display: flex;
        align-items: center;
        gap: 40px;
        margin-top: 60px;
    }
    .intern-banner h2 { color: var(--white); margin-bottom: 15px; }
    .intern-banner i { font-size: 4rem; color: var(--secondary); opacity: 0.8; }

    .skills-container {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
        margin-top: 40px;
    }
    .skill-btn {
        background: var(--white);
        border: 1px solid var(--border);
        padding: 10px 20px;
        border-radius: 50px;
        font-size: 0.9rem;
        font-weight: 600;
        color: var(--primary);
        transition: var(--transition);
    }
    .skill-btn:hover { background: var(--secondary); color: var(--white); border-color: var(--secondary); }

    /* ================= RESPONSIVE ================= */
    @media (max-width: 992px) {
        .features-strip { grid-template-columns: repeat(2, 1fr); }
        .hero h1 { font-size: 2.2rem; }
    }
    @media (max-width: 768px) {
        .features-strip { grid-template-columns: 1fr; }
        .intern-banner { flex-direction: column; text-align: center; padding: 30px; }
    }