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

body {
    font-family: "Segoe UI", Roboto, Arial, sans-serif;
    background-color: #f9fafb;
    color: #1f2937;
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: auto;
}

/* =====================
   Header & Navbar
===================== */
.header {
    background-color: #ffffff;
    border-bottom: 1px solid #e5e7eb;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 18px;
}

.logo img {
    width: 36px;
    height: 36px;
}

.navbar a {
    margin-left: 20px;
    font-size: 15px;
    color: #374151;
}

.navbar a:hover,
.navbar a.active {
    color: #1d4ed8;
    font-weight: 500;
}

/* =====================
   Hero Section
===================== */
.hero {
    background-color: #ffffff;
    padding: 70px 0;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 40px;
}

.hero-text h1 {
    font-size: 36px;
    margin-bottom: 16px;
    color: #111827;
}

.hero-text p {
    font-size: 16px;
    color: #4b5563;
    margin-bottom: 24px;
}

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

/* Buttons */
.btn {
    padding: 12px 20px;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.primary-btn {
    background-color: #1d4ed8;
    color: #ffffff;
}

.primary-btn:hover {
    background-color: #1e40af;
}

.secondary-btn {
    border: 1px solid #1d4ed8;
    color: #1d4ed8;
}

.secondary-btn:hover {
    background-color: #e0e7ff;
}

/* =====================
   Highlights Section
===================== */
.highlights {
    padding: 60px 0;
}

.highlights h2 {
    text-align: center;
    font-size: 28px;
    margin-bottom: 40px;
}

.highlight-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.highlight-card {
    background: #ffffff;
    padding: 22px;
    border-radius: 8px;
    border: 1px solid #e5e7eb;
}

.highlight-card h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.highlight-card p {
    font-size: 14px;
    color: #4b5563;
}

/* =====================
   Classes Section
===================== */
.classes {
    background-color: #ffffff;
    padding: 60px 0;
}

.classes h2 {
    text-align: center;
    font-size: 28px;
    margin-bottom: 40px;
}

.class-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 20px;
}

.class-card {
    padding: 24px;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    background-color: #f9fafb;
}

.class-card h3 {
    margin-bottom: 10px;
    font-size: 18px;
}

/* =====================
   Medium Support
===================== */
.medium {
    padding: 60px 0;
    text-align: center;
}

.medium p {
    max-width: 700px;
    margin: auto;
    color: #4b5563;
}

/* =====================
   Footer
===================== */
.footer {
    background-color: #111827;
    color: #d1d5db;
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.footer h3 {
    color: #ffffff;
    margin-bottom: 10px;
}

.footer p {
    font-size: 14px;
}

.footer .disclaimer {
    font-size: 13px;
    color: #9ca3af;
    margin-top: 10px;
}

.footer-bottom {
    border-top: 1px solid #374151;
    margin-top: 30px;
    padding-top: 15px;
    text-align: center;
    font-size: 13px;
    color: #9ca3af;
}

/* =====================
   Responsive Design
===================== */
@media (max-width: 900px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .navbar {
        display: none;
    }
}