/* library.css */

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

body {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f8fb;
    color: #2c3e50;
    line-height: 1.6;
}

header {
    background: linear-gradient(135deg, #0d4f6b, #1b6d85);
    color: white;
    padding: 30px 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

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

header h1 {
    font-size: 2.5rem;
    margin-bottom: 8px;
}

header p {
    opacity: 0.9;
    font-size: 1rem;
}

.skyline {
    height: 70px;
    background: linear-gradient(to top, #0b3f55 0%, #0b3f55 100%);
    position: relative;
    overflow: hidden;
}

.skyline::before {
    content: "";
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 100%;
    background:
        linear-gradient(
            to right,
            transparent 0%,
            transparent 3%,
            #083042 3%,
            #083042 5%,
            transparent 5%,
            transparent 8%,
            #114e68 8%,
            #114e68 12%,
            transparent 12%,
            transparent 15%,
            #0f5d7b 15%,
            #0f5d7b 18%,
            transparent 18%,
            transparent 21%,
            #0b3f55 21%,
            #0b3f55 25%,
            transparent 25%,
            transparent 28%,
            #145f7f 28%,
            #145f7f 33%,
            transparent 33%,
            transparent 36%,
            #0d4f6b 36%,
            #0d4f6b 40%,
            transparent 40%,
            transparent 45%,
            #114e68 45%,
            #114e68 50%,
            transparent 50%,
            transparent 55%,
            #0b3f55 55%,
            #0b3f55 60%,
            transparent 60%,
            transparent 65%,
            #145f7f 65%,
            #145f7f 70%,
            transparent 70%,
            transparent 75%,
            #0d4f6b 75%,
            #0d4f6b 80%,
            transparent 80%,
            transparent 85%,
            #083042 85%,
            #083042 90%,
            transparent 90%
        );
}

.container {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
}

.section-title {
    margin: 40px 0 20px;
    font-size: 1.8rem;
    color: #0d4f6b;
    border-left: 6px solid #0d4f6b;
    padding-left: 12px;
}

.resource-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
    transition: transform 0.2s ease;
}

.card:hover {
    transform: translateY(-4px);
}

.card-content {
    padding: 20px;
}

.card h3 {
    margin-bottom: 10px;
    color: #0d4f6b;
}

.card p {
    margin-bottom: 16px;
    color: #5b6770;
}

.btn {
    display: inline-block;
    padding: 10px 18px;
    background-color: #0d4f6b;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    transition: 0.3s ease;
}

.btn:hover {
    background-color: #083042;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.5rem;
    }
}