/* VIGOR Stylesheet — Goethe-Universität Corporate Identity */

:root {
    /* Goethe-Universität CI palette */
    --gu-blue: #00618f;
    --gu-blue-dark: #004a6f;
    --gu-hellgrau: #f8f6f5;
    --gu-sandgrau: #e4e3dd;
    --gu-dunkelgrau: #4d4b46;

    /* Semantic mappings */
    --primary-color: var(--gu-blue);
    --primary-dark: var(--gu-blue-dark);
    --secondary-color: #5a8fa8;
    --success-color: #27ae60;
    --danger-color: #e74c3c;
    --light-bg: var(--gu-hellgrau);
    --text-color: #333;
    --border-color: var(--gu-sandgrau);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
}

a {
    color: var(--primary-color);
}

a:hover {
    color: var(--primary-dark);
}

header {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

nav h1 {
    font-size: 1.8rem;
}

/* Logo in header nav */
.nav-logo {
    height: 32px;
    width: auto;
    filter: brightness(0) invert(1); /* white version of blue SVG */
}

nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
}

nav a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s;
}

nav a:hover {
    opacity: 0.8;
    color: white;
}

main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
}

/* Section headings with more spacing */
main h2 {
    margin-top: 3rem;
    margin-bottom: 1rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

main h2:first-of-type {
    margin-top: 2rem;
    padding-top: 0;
    border-top: none;
}

.search-box {
    background-color: var(--light-bg);
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}

.search-box input[type="text"] {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

.search-box button {
    margin-top: 1rem;
    padding: 0.75rem 2rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s;
}

.search-box button:hover {
    background-color: var(--primary-dark);
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.content-card {
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    transition: box-shadow 0.3s;
}

.content-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.content-card h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.content-card .type-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: 12px;
    font-size: 0.85rem;
    margin-bottom: 0.75rem;
}

.content-card .description {
    color: var(--gu-dunkelgrau);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.content-card .metadata {
    font-size: 0.9rem;
    color: #888;
    margin-bottom: 0.5rem;
}

.content-card a {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.5rem 1rem;
    background-color: var(--success-color);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.content-card a:hover {
    background-color: #229954;
}

.alert {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.alert-info {
    background-color: #d1ecf1;
    border: 1px solid #bee5eb;
    color: #0c5460;
}

.alert-warning {
    background-color: #fff3cd;
    border: 1px solid #ffeeba;
    color: #856404;
}

.alert-danger {
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
}

footer {
    margin-top: 4rem;
    text-align: center;
}

footer a {
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

.footer-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 3rem;
    padding: 0 2rem;
    background: var(--gu-hellgrau);
    border-top: 1px solid var(--gu-sandgrau);
    flex-wrap: wrap;
}

.footer-logos img {
    height: 65px;
    width: auto;
    object-fit: contain;
    opacity: 0.9;
    transition: opacity 0.2s;
}

.footer-logos img[alt*="Next Level"] {
    height: 100px;
}

.footer-logos img[alt*="studiumdigitale"] {
    height: 55px;
    max-width: 230px;
}

.footer-logos a:hover img {
    opacity: 1;
}

.footer-bottom {
    background-color: var(--gu-dunkelgrau);
    color: #d4d2cd;
    padding: 1rem 2rem;
}

.footer-bottom a {
    color: #b8d4e8;
}

.footer-bottom a:hover {
    color: #fff;
}

.footer-links {
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

.user-info {
    background-color: var(--light-bg);
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.3s;
    border: 1px solid transparent;
    cursor: pointer;
    font-size: inherit;
    line-height: 1.5;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    color: white;
}

.btn-outline-primary {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    color: white;
}

.btn-outline-danger {
    background-color: transparent;
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
}

.btn-outline-danger:hover {
    background-color: var(--danger-color);
    color: white;
}

.btn-secondary {
    background-color: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background-color: #5a6268;
    color: white;
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background-color: #c0392b;
}