@import url("https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap");

/* Basic setup */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Plus Jakarta Sans", sans-serif;
    background-color: #f6f7f9;
    color: #1a1d24;
    line-height: 1.5;
}

.container {
    width: 90%;
    max-width: 1000px;
    margin: 0 auto;
}

/* Header */
.site-header {
    background-color: #ffffff;
    border-bottom: 1px solid #e3e7ee;
}

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

.brand {
    font-size: 1.2rem;
    font-weight: 700;
    color: #1a1d24;
    text-decoration: none;
}

.nav-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 16px;
}

.nav-menu a {
    text-decoration: none;
    color: #5f6775;
    font-size: 0.95rem;
}

/* Hero */
.hero {
    padding: 48px 0 32px;
}

.hero h1 {
    margin: 0 0 12px;
    font-size: 2rem;
}

.hero p {
    margin: 0;
    max-width: 680px;
    color: #5f6775;
}

.section-title {
    margin: 0 0 20px;
    font-size: 1.5rem;
}

/* Course cards */
.course-section {
    padding-bottom: 48px;
}

.course-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.course-card {
    width: calc(33.333% - 11px);
    min-width: 260px;
    background-color: #ffffff;
    border: 1px solid #e3e7ee;
    border-radius: 8px;
    overflow: hidden;
}

.course-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-bottom: 1px solid #e3e7ee;
}

.course-content {
    padding: 16px;
}

.badge {
    display: inline-block;
    margin-bottom: 10px;
    padding: 4px 10px;
    border-radius: 999px;
    background-color: #eef2f7;
    color: #344054;
    font-size: 0.75rem;
    font-weight: 600;
}

.course-card h3 {
    margin: 0 0 8px;
    font-size: 1.15rem;
}

.course-card p {
    margin: 0 0 14px;
    color: #5f6775;
    font-size: 0.95rem;
}

.course-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 14px;
    color: #697386;
    font-size: 0.82rem;
}

.btn {
    display: inline-block;
    padding: 9px 14px;
    border-radius: 6px;
    background-color: #0f172a;
    color: #ffffff;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
}

/* Footer */
.site-footer {
    background-color: #ffffff;
    border-top: 1px solid #e3e7ee;
    padding: 36px 0 20px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    margin-bottom: 24px;
}

.footer-content section {
    flex: 1;
    min-width: 220px;
}

.footer-content h4 {
    margin: 0 0 10px;
    font-size: 1rem;
}

.footer-content p,
.footer-content li {
    margin: 0;
    color: #5f6775;
    font-size: 0.92rem;
    line-height: 1.6;
}

.footer-content ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-content li {
    margin-bottom: 7px;
}

.footer-content a {
    color: #5f6775;
    text-decoration: none;
}

.footer-bottom {
    border-top: 1px solid #e3e7ee;
    padding-top: 16px;
    text-align: center;
    color: #768095;
    font-size: 0.84rem;
}

/* Responsive */
@media (max-width: 900px) {
    .course-card {
        width: calc(50% - 8px);
    }
}

@media (max-width: 640px) {
    .top-nav {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .nav-menu {
        flex-wrap: wrap;
    }

    .course-card {
        width: 100%;
    }
}