/* oc-font - latin */
@font-face {
  font-display: swap;
  font-family: 'OC Sans';
  font-style: normal;
  font-weight: 800;
  src: url('fonts/oc.woff2') format('woff2');
}

/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #4a5568;
    background: #f5f3f0;
    min-height: 100vh;
    padding: 0;
    margin: 0;
}

.container {
    max-width: 100%;
    margin: 0 auto;
    background: #f5f3f0;
    overflow: hidden;
}

/* Header */
.header {
    background: white;
    padding: 10px;
    border-bottom: 1px solid #e5e7eb;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 8px;
    max-width: 1200px;
    margin: 0 auto;
}

.logo-mark {
    width: 48px;
    height: 48px;
    object-fit: contain;
}

.logo-text {
    font-family: 'OC Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 24px;
    font-weight: 800;
    color: #1a1a1a;
    letter-spacing: -0.5px;
}

/* Maintenance Notice */
.notice {
    padding: 60px 40px 40px;
    background: #f5f3f0;
    max-width: 1200px;
    margin: 0 auto;
}

.notice-content {
    max-width: 700px;
}

.notice h1 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 16px;
    color: #2d3748;
    line-height: 1.2;
}

.notice p {
    font-size: 17px;
    margin-bottom: 12px;
    color: #4a5568;
    line-height: 1.6;
}

.estimated-time {
    font-size: 15px;
    margin-top: 24px;
    padding: 12px 20px;
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 6px;
    display: inline-block;
    color: #4a5568;
}

.estimated-time strong {
    font-weight: 700;
    color: #2d3748;
}

/* Courses Section */
.courses-section {
    padding: 40px 40px 80px;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-size: 32px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 50px;
    color: #2d3748;
}

.subject-heading {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 25px;
    margin-top: 50px;
    color: #2d3748;
    padding-bottom: 10px;
}

.subject-heading:first-of-type {
    margin-top: 0;
}

/* Course Grid */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.course-card {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    text-decoration: none;
    color: inherit;
    display: block;
}

.course-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.course-image {
    width: 100%;
    height: 180px;
    background: #e5e7eb;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.course-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.course-content {
    padding: 20px;
}

.course-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #2d3748;
    line-height: 1.4;
}

.course-summary {
    font-size: 16px;
    color: #505b6d;
    line-height: 1.6;
}

/* Footer */
.footer {
    background: white;
    padding: 30px 40px;
    text-align: center;
    border-top: 1px solid #e5e7eb;
}

.footer p {
    color: #718096;
    font-size: 14px;
    max-width: 1200px;
    margin: 0 auto;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header {
        padding: 15px 25px;
    }

    .logo-mark {
        width: 36px;
        height: 36px;
    }

    .logo-text {
        font-size: 20px;
    }

    .notice {
        padding: 40px 25px 30px;
    }

    .notice h1 {
        font-size: 32px;
    }

    .notice p {
        font-size: 16px;
    }

    .courses-section {
        padding: 30px 25px 60px;
    }

    .section-title {
        font-size: 28px;
        margin-bottom: 35px;
    }

    .subject-heading {
        font-size: 22px;
        margin-top: 40px;
    }

    .courses-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .course-image {
        height: 160px;
    }

    .course-content {
        padding: 18px;
    }

    .course-title {
        font-size: 21px;
    }

    .course-summary {
        font-size: 14px;
    }

    .footer {
        padding: 25px;
    }
}

@media (max-width: 480px) {
    .notice h1 {
        font-size: 28px;
    }

    .section-title {
        font-size: 24px;
    }

    .estimated-time {
        font-size: 14px;
        padding: 12px 20px;
    }
}