/* FES BB Connect e.V. – base styles */

:root {
    --color-bg: #fbfaf7;
    --color-surface: #ffffff;
    --color-text: #1f2a33;
    --color-muted: #5c6873;
    --color-border: #e3e0d8;
    --color-brand-blue: #0084de;
    --color-brand-orange: #f28900;
    --color-primary: #006bb8;
    --color-primary-dark: #00548f;
    --color-accent: var(--color-brand-orange);
    --color-todo-bg: #fff4e0;
    --color-todo-border: var(--color-brand-orange);
    --radius: 10px;
    --max-width: 960px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 1.0625rem;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1;
    padding-block: 2.5rem 3.5rem;
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin-inline: auto;
    padding-inline: 1.25rem;
}

h1, h2, h3 {
    line-height: 1.25;
    color: var(--color-text);
}

h1 {
    font-size: clamp(1.9rem, 4vw, 2.6rem);
    margin: 0 0 1rem;
}

h2 {
    font-size: 1.4rem;
    margin: 2.25rem 0 0.75rem;
}

h3 {
    font-size: 1.1rem;
    margin: 0 0 0.5rem;
}

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

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

.lead {
    font-size: 1.2rem;
    color: var(--color-muted);
    max-width: 42rem;
}

.muted {
    color: var(--color-muted);
    font-size: 0.95rem;
}

/* Accessibility */

.skip-link {
    position: absolute;
    left: -9999px;
}

.skip-link:focus {
    left: 1rem;
    top: 1rem;
    z-index: 10;
    padding: 0.5rem 1rem;
    background: var(--color-surface);
}

:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

/* Header */

.demo-banner {
    background: var(--color-primary-dark);
    color: #fff;
    font-size: 0.85rem;
    text-align: center;
    padding: 0.35rem 1rem;
}

.site-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.header-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem 1.5rem;
    padding-block: 1rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.25rem;
    text-decoration: none;
    color: var(--color-text);
}

.brand img {
    width: 56px;
    height: 56px;
    flex-shrink: 0;
}

.brand-accent {
    color: var(--color-brand-blue);
}

.main-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
}

.main-nav a {
    padding: 0.4rem 0.8rem;
    border-radius: 999px;
    text-decoration: none;
    color: var(--color-text);
    font-weight: 500;
}

.main-nav a:hover {
    background: var(--color-bg);
}

.main-nav a[aria-current="page"] {
    background: var(--color-primary);
    color: #fff;
}

/* Hero */

.hero {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 2rem;
    padding-block: 1.5rem 1rem;
}

.hero-logo {
    width: 320px;
    height: auto;
}

@media (max-width: 720px) {
    .hero {
        grid-template-columns: 1fr;
    }

    .hero-logo {
        order: -1;
        width: 200px;
        margin-inline: auto;
    }
}

.eyebrow {
    margin: 0 0 0.5rem;
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

/* Buttons */

.button {
    display: inline-block;
    padding: 0.75rem 1.4rem;
    border-radius: var(--radius);
    border: 2px solid var(--color-primary);
    background: var(--color-primary);
    color: #fff;
    font-weight: 600;
    text-decoration: none;
}

.button:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: #fff;
}

.button-secondary {
    background: transparent;
    color: var(--color-primary);
}

.button-secondary:hover {
    background: var(--color-primary);
}

/* Cards and boxes */

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.card,
.download,
.placeholder {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.25rem;
}

.card p {
    margin: 0;
    color: var(--color-muted);
}

.download {
    margin-top: 2rem;
    text-align: center;
    padding: 2rem 1.25rem;
}

.download .button {
    font-size: 1.1rem;
}

.placeholder {
    margin-block: 1.5rem;
    border-style: dashed;
    border-color: var(--color-todo-border);
}

.link-list {
    padding-left: 1.2rem;
}

.link-list li {
    margin-bottom: 0.4rem;
}

/* TODO markers */

.notice {
    background: var(--color-todo-bg);
    border-left: 4px solid var(--color-todo-border);
    border-radius: 4px;
    padding: 0.85rem 1rem;
}

.todo {
    display: inline-block;
    background: var(--color-todo-bg);
    border: 1px dashed var(--color-todo-border);
    border-radius: 4px;
    padding: 0.1rem 0.5rem;
    font-size: 0.95rem;
}

/* Footer */

.site-footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    font-size: 0.95rem;
    color: var(--color-muted);
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem 1.5rem;
    padding-block: 1.25rem;
}

.footer-inner p {
    margin: 0;
}

.site-footer nav {
    display: flex;
    gap: 1rem;
}

.site-footer a {
    color: var(--color-muted);
}

.site-footer a[aria-current="page"] {
    color: var(--color-text);
    font-weight: 600;
}