/* ============================================================
   Pliquett-Profil — site.css
   Mobile-first, BEM, eigene Breakpoints, keine Framework-Deps.
   ============================================================ */

:root {
    --color-bg:         #f8f8f8;
    --color-surface:    #ffffff;
    --color-text:       #1a1a1a;
    --color-muted:      #6b7280;
    --color-muted-2:    #9ca3af;
    --color-border:     #e5e7eb;
    --color-accent:     #0b3b5c;
    --color-accent-2:   #1d4ed8;
    --color-accent-bg:  #eff6ff;
    --radius-sm:        8px;
    --radius-md:        12px;
    --radius-lg:        20px;
    --radius-pill:      999px;
    --space-1:          4px;
    --space-2:          8px;
    --space-3:          12px;
    --space-4:          16px;
    --space-5:          24px;
    --space-6:          32px;
    --space-7:          48px;
    --container-max:    1080px;
    --focus-outline:    2px solid var(--color-accent-2);
    color-scheme:       light;
    color:              var(--color-text);
    background:         var(--color-bg);
    font-family:        Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, Helvetica, sans-serif;
    font-size:          100%;
}

*, *::before, *::after { box-sizing: border-box; }
html { box-sizing: border-box; }
body  { margin: 0; padding: 0; line-height: 1.6; min-height: 100vh; }
img   { max-width: 100%; display: block; height: auto; }
button, a { font: inherit; }
a       { color: var(--color-accent-2); }
a:hover { text-decoration: underline; }

/* Focus visible für A11y (NFR-012) */
:focus-visible {
    outline: var(--focus-outline);
    outline-offset: 2px;
    border-radius: 4px;
}

/* ---------- Skip-Link (NFR-015) ---------- */
.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    padding: var(--space-3) var(--space-4);
    background: var(--color-accent);
    color: #fff;
    text-decoration: none;
    border-radius: 0 0 var(--radius-sm) 0;
    z-index: 100;
}
.skip-link:focus { left: 0; }

/* ---------- Site-Header ---------- */
.site-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}
.site-header__inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-4) var(--space-5);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-4);
    justify-content: space-between;
}
.site-header__brand {
    display: grid;
    gap: var(--space-1);
}
.site-header__logo {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
}
.site-header__subtitle {
    margin: 0;
    color: var(--color-muted);
    font-size: 0.95rem;
}
.site-header__controls {
    display: flex;
    gap: var(--space-3);
    align-items: center;
}

/* ---------- Site-Nav ---------- */
.site-nav {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}
.site-nav__link {
    color: #374151;
    text-decoration: none;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
}
.site-nav__link:hover {
    background: var(--color-accent-bg);
    color: var(--color-accent-2);
    text-decoration: none;
}
.site-nav__link--active {
    background: var(--color-accent-bg);
    color: var(--color-accent-2);
    font-weight: 600;
}

/* ---------- Lang-Switcher ---------- */
.lang-switcher {
    display: inline-flex;
    gap: var(--space-1);
    align-items: center;
}
.lang-switcher__flag {
    display: inline-block;
    border-radius: 3px;
    overflow: hidden;
    opacity: 0.55;
    border: 2px solid transparent;
    transition: opacity 0.15s ease, border-color 0.15s ease;
    line-height: 0;
}
.lang-switcher__flag:hover { opacity: 0.85; }
.lang-switcher__flag--active {
    opacity: 1;
    border-color: var(--color-accent-2);
}
.lang-switcher__svg {
    width: 28px;
    height: 21px;
    display: block;
}

/* ---------- Font-Switcher ---------- */
.font-switcher {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    padding: 2px;
}
.font-switcher__btn {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 0;
    background: transparent;
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
    color: var(--color-text);
}
.font-switcher__btn:hover:not(:disabled) { background: var(--color-surface); }
.font-switcher__btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}
.font-switcher__label {
    font-size: 0.78rem;
    color: var(--color-muted);
    min-width: 4.5em;
    text-align: center;
    -webkit-user-select: none;
    user-select: none;
}

/* ---------- Site-Main + Sections ---------- */
.site-main {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-5);
}
.section {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    margin-bottom: var(--space-5);
}
.section__heading {
    margin-top: 0;
    font-size: 1.35rem;
}
.page-header {
    padding: var(--space-6) 0 var(--space-5);
}
.page-header h1 {
    margin: 0 0 var(--space-3);
    font-size: clamp(1.8rem, 2.5vw, 2.6rem);
}

/* ---------- Hero ---------- */
.hero {
    display: grid;
    gap: var(--space-5);
    grid-template-columns: minmax(0, 1fr) 320px;
    align-items: start;
    padding: var(--space-6) 0;
}
.hero__content { display: grid; gap: var(--space-4); }
.hero__eyebrow {
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.82rem;
    color: var(--color-accent-2);
}
.hero__title {
    margin: 0;
    font-size: clamp(2.2rem, 2.8vw, 3.2rem);
    line-height: 1.05;
}
.hero__subtitle {
    margin: 0;
    color: var(--color-muted);
    font-size: 1.05rem;
}
.hero__headline {
    margin: 0;
    color: #4b5563;
    font-size: 1.05rem;
    max-width: 42rem;
}
.hero__figure {
    margin: 0;
    overflow: hidden;
    border-radius: var(--radius-lg);
    background: var(--color-border);
}
.hero__figure img { width: 100%; height: auto; }

/* ---------- Buttons ---------- */
.buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    margin-top: var(--space-3);
}
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-pill);
    text-decoration: none;
    border: 1px solid transparent;
    font-weight: 600;
    cursor: pointer;
}
.button--primary {
    background: var(--color-accent);
    color: #ffffff;
}
.button--primary:hover { background: var(--color-accent-2); color: #fff; text-decoration: none; }
.button--secondary {
    background: var(--color-surface);
    color: #374151;
    border-color: #d1d5db;
}
.button--secondary:hover { background: var(--color-accent-bg); color: var(--color-accent-2); text-decoration: none; }

/* ---------- Lists ---------- */
.list-clean { list-style: none; padding: 0; margin: 0; }
.list-clean li { margin-bottom: 0.85rem; }

/* ---------- Timeline (CV) ---------- */
.timeline {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: var(--space-4);
}
.timeline__item {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: var(--space-4);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-border);
}
.timeline__item:last-child { border-bottom: 0; padding-bottom: 0; }
.timeline__period {
    color: var(--color-muted);
    font-variant-numeric: tabular-nums;
    font-size: 0.95rem;
}
.timeline__body { display: grid; gap: 4px; }
.timeline__role { color: var(--color-text); }
.timeline__org { color: var(--color-muted); font-size: 0.95rem; }

/* ---------- Publications ---------- */
.publications {
    list-style: decimal;
    padding-left: 1.5rem;
    margin: 0;
    display: grid;
    gap: var(--space-5);
}
.publications__item { padding-left: var(--space-1); }
.publications__title { margin: 0 0 var(--space-1); font-weight: 600; }
.publications__meta {
    margin: 0 0 var(--space-2);
    color: var(--color-muted);
    font-size: 0.95rem;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-1) var(--space-3);
}
.publications__description { margin: 0; color: #4b5563; }
.rss-link {
    display: inline-block;
    margin-left: var(--space-2);
    padding: 1px 6px;
    border-radius: var(--radius-sm);
    background: #ff8c00;
    color: #fff !important;
    font-size: 0.75rem;
    font-weight: 700;
    text-decoration: none;
    letter-spacing: 0.05em;
}

/* ---------- Address (Impressum) ---------- */
.address {
    font-style: normal;
    line-height: 1.7;
}

/* ---------- E-Mail-Obfuskation ---------- */
.email-obf {
    word-break: break-word;
}
.email-obf__sep {
    color: var(--color-muted);
    font-size: 0.85em;
}

/* ---------- Error-Pages ---------- */
.error {
    max-width: 40rem;
    margin: var(--space-7) auto;
    text-align: center;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-7) var(--space-6);
}
.error__heading { margin: 0 0 var(--space-3); }
.error__message { color: var(--color-muted); margin: 0 0 var(--space-5); }
.error__icon { font-size: 3.5rem; margin: 0 0 var(--space-3); line-height: 1; }
.error__image {
    display: block;
    margin: 0 auto var(--space-5);
    width: 100%;
    max-width: 320px;
    height: auto;
    border-radius: var(--radius-md);
}

/* ---------- Site-Footer ---------- */
.site-footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    color: var(--color-muted);
    margin-top: var(--space-7);
}
.site-footer__inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-5);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    align-items: center;
    justify-content: space-between;
    font-size: 0.9rem;
}
.site-footer__copyright { margin: 0; }
.site-footer__nav {
    display: inline-flex;
    gap: var(--space-4);
    flex-wrap: wrap;
}
.site-footer__link {
    color: var(--color-muted);
    text-decoration: none;
}
.site-footer__link:hover { color: var(--color-accent-2); text-decoration: underline; }
.site-footer__teapot {
    text-decoration: none;
    font-size: 1.1rem;
    line-height: 1;
    opacity: 0.4;
    transition: opacity 0.2s ease;
    filter: grayscale(35%);
}
.site-footer__teapot:hover {
    opacity: 1;
    filter: none;
}

/* ---------- Media Queries ---------- */
@media (max-width: 900px) {
    .hero { grid-template-columns: 1fr; }
    .hero__figure { max-width: 320px; }
}
@media (max-width: 640px) {
    .site-header__inner { padding: var(--space-4); }
    .site-header__controls { order: 3; width: 100%; justify-content: flex-end; }
    .site-main { padding: var(--space-4); }
    .section { padding: var(--space-5); }
    .timeline__item { grid-template-columns: 1fr; gap: var(--space-1); }
    .site-footer__inner { flex-direction: column; align-items: flex-start; }
}

/* ---------- Print ---------- */
@media print {
    .site-header__controls,
    .site-footer__teapot,
    .skip-link { display: none; }
    body { background: #fff; }
    .section { border: 0; padding: var(--space-4) 0; }
}