/* Swiss Whale Intelligence — Landing-Page Base Styles
 *
 * Header / Logo / Nav / Lang-Switch / Social-Links / Theme-Toggle / CTA
 * + Footer-Section / Footer-Social / Footer-Bottom
 * + Cookie-Banner-Base (granular DSGVO/revDSG)
 *
 * Extrahiert 2026-04-30 aus update_website.py inline-CSS für:
 *  - bessere HTTP-Cache-Effizienz (1y immutable mit ?v=)
 *  - kleinere HTML-Größe (~8 KB inline gespart)
 *  - zukünftige Wiederverwendung über mehrere Pages
 *
 * Diese Datei verwendet UNPREFIXED Klassen-Namen die zu Landing's HTML passen
 * (`<header>`, `.logo`, `.nav-links`, `.lang-switch`, `.theme-toggle`, …).
 *
 * /charts und andere Pages nutzen /_shared/components.css mit `swi-*` prefix.
 * Long-term TODO: components.css und landing-base.css dedupe (eine Datei mit
 * beiden Selektor-Listen, oder Charts-HTML auf unprefixed umstellen).
 *
 * Dependencies: /_shared/tokens.css MUSS vor dieser Datei geladen werden.
 */

/* ─── Page-base: Anchor-link-offset under fixed header ──────────────── */

html { scroll-padding-top: 70px; }
section[id] { scroll-margin-top: 70px; }

/* ─── Header (sticky, blurred, brand-glass) ─────────────────────────── */

header {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    border-bottom: 1px solid var(--border-subtle);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: var(--z-header);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

/* ─── Logo + Schweizer Flagge ───────────────────────────────────────── */

.logo {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--accent-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 44px;
    padding: 4px 0;
}

/* CSS-gezeichnete Schweizer Flagge — identisch zu Dashboard (seit 19.04.2026) */
.swiss-flag-icon {
    width: 28px;
    height: 28px;
    background: #DC0A1A;
    border-radius: 4px;
    position: relative;
    display: inline-block;
    flex-shrink: 0;
}
.swiss-flag-icon::before,
.swiss-flag-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #fff;
}
.swiss-flag-icon::before { width: 18px; height: 4px; }
.swiss-flag-icon::after  { width: 4px; height: 18px; }

/* ─── Nav-Wrapper (desktop transparent, mobile drawer) ──────────────── */

.nav-collapse {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex: 1;
    justify-content: flex-end;
    margin-right: 0.5rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}
.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: var(--font-medium);
    padding: 12px 10px;
    display: inline-block;
    min-height: 44px;
    line-height: 1.4;
    transition: color var(--duration-fast) var(--ease-default);
}
.nav-links a:hover { color: var(--accent-warning); }

/* ─── Sprach-Switcher (Anchor-based für SEO + hreflang) ─────────────── */

.lang-switch {
    display: flex;
    gap: 4px;
    align-items: center;
}
/* Anchor-OR-Button-Variante — PHP-Pages (/whale/, /alerts/, /tx/) nutzen
   <button> mit JS-Handlers (setLang/data-lang), Landing/Charts/Help nutzen <a>.
   Beide bekommen identische Brand-Optik via Selector-Liste. */
.lang-switch a,
.lang-switch button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-medium);
    padding: 10px 14px;
    min-height: 44px;
    min-width: 44px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: var(--font-semibold);
    transition: all var(--duration-fast) var(--ease-default);
    text-decoration: none;
    font-family: inherit;
}
.lang-switch a:hover,
.lang-switch a.active,
.lang-switch button:hover,
.lang-switch button.active {
    background: rgba(4, 44, 83, 0.1);
    color: var(--accent-primary);
    border-color: var(--accent-primary);
}

/* ─── Social-Links (Header) — 44×44 minimum (WCAG 2.5.5) ────────────── */

.social-links {
    display: flex;
    gap: 1rem;
    align-items: center;
}
.social-links a {
    color: var(--text-secondary);
    font-size: 1.2rem;
    text-decoration: none;
    padding: 8px;
    border-radius: var(--radius-md);
    transition: all var(--duration-fast) var(--ease-default);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
}
.social-links a:hover {
    color: var(--accent-primary);
    background: rgba(4, 44, 83, 0.05);
}

/* ─── Icon-Link (Footer + Misc) ─────────────────────────────────────── */

.icon-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 1rem;
    transition: all var(--duration-fast) var(--ease-default);
}
.icon-link:hover {
    background: rgba(4, 44, 83, 0.05);
    color: var(--accent-primary);
    border-color: var(--accent-primary);
}

/* ─── Hamburger (Mobile only, via media-query unten) ────────────────── */

.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    font-size: var(--text-xl);
    color: var(--accent-primary);
    padding: 8px;
}

/* ─── CTA-Button ─────────────────────────────────────────────────────── */

.cta-button {
    background: transparent;
    color: var(--accent-primary);
    padding: 12px 24px;
    border: 1.5px solid var(--accent-primary);
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: var(--font-semibold);
    transition: all var(--duration-fast) var(--ease-default);
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.cta-button:hover {
    background: var(--accent-primary);
    color: var(--text-on-accent);
}

/* ─── Theme-Toggle (Sun/Moon) ────────────────────────────────────────── */

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    flex-shrink: 0;
    border-radius: 50%;
    border: 1px solid var(--border-card);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1rem;
    transition: all var(--duration-fast) var(--ease-default);
    padding: 0;
}
.theme-toggle:hover {
    border-color: var(--border-card-hover);
    background: var(--bg-secondary);
}

/* ─── Mobile-Backdrop für Nav-Drawer ─────────────────────────────────── */

.nav-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 998;
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
}
.nav-backdrop.active { display: block; }

/* ─── Footer ─────────────────────────────────────────────────────────── */

footer {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 3rem 0;
    text-align: center;
}
.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}
.footer-section h3 {
    margin-bottom: 1rem;
    color: var(--accent-primary);
}
/* Touch-Target 44px gilt auch auf Desktop (nicht nur Mobile) — Audit 17.04.2026 */
.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 6px 0;
    transition: color var(--duration-fast) var(--ease-default);
}
.footer-section a:hover { color: var(--accent-primary); }

.footer-social {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}
.footer-social a {
    color: var(--text-secondary);
    font-size: var(--text-xl);
    padding: 10px;
    border-radius: var(--radius-lg);
    transition: all var(--duration-fast) var(--ease-default);
    /* Härtung: 44×44 minimum (WCAG 2.5.5) — Audit 30.04.2026 */
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
}
.footer-social a:hover {
    color: var(--accent-primary);
    background: rgba(4, 44, 83, 0.05);
}

.footer-bottom {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 1rem;
}

/* ─── Mobile (≤1024px): Hamburger + Drawer-Pattern ───────────────────── */

@media (max-width: 1024px) {
    .hamburger {
        display: flex;
        align-items: center;
        justify-content: center;
        min-width: 44px;
        min-height: 44px;
    }
    .nav-collapse {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        padding: 1rem 20px;
        flex-direction: column;
        align-items: center;
        gap: 1rem;
        border-bottom: 1px solid var(--border-subtle);
        box-shadow: var(--shadow-md);
        z-index: 999;
        margin: 0;
    }
    .nav-collapse.open { display: flex; }
    .nav-links {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
    .nav-collapse .social-links { justify-content: center; width: 100%; }
    .logo { margin-right: auto; font-size: var(--text-base); }
    .logo .swiss-flag-icon { width: 24px; height: 24px; }
    .cta-button { padding: 8px 14px; font-size: 0.85rem; }
}

@media (max-width: 768px) {
    nav { padding: 0.75rem 0; }
    .cta-button { padding: 10px 16px; font-size: 0.85rem; min-height: 44px; }
    /* Touch-Target-Hardening für Footer auf Mobile */
    .footer-section a, .footer-social a {
        min-height: 44px;
        display: inline-flex;
        align-items: center;
        padding: 8px 4px;
    }
}