/* =========================================================================
   RSE Willich · Termine-Finder
   Designkonzept: Die Robert-Schuman-Europaschule trägt "Europa" im Namen –
   die Palette greift die Farben der Europaflagge auf (Kobaltblau + Gold),
   gebrochen auf ruhige, moderne Töne. Das Signatur-Element ist ein Kranz aus
   zwölf Punkten (angelehnt an die Sterne der Europaflagge), der als
   Ladeanimation und dezente Kopfzeilen-Deko dient. Datenspalten nutzen eine
   Mono-Schrift, die an Stundenplan-/Stempelaufdrucke erinnert.
   ========================================================================= */

:root {
  --radius-s: 8px;
  --radius-m: 14px;
  --radius-l: 22px;
  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1.25rem;
  --space-4: 2rem;
  --space-5: 3.5rem;
  --font-display: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
  --transition-theme: background-color 0.4s ease, color 0.4s ease, border-color 0.4s ease;
}

/* --- Helles Thema (Standard) ------------------------------------------
   Gilt, solange der Browser/das Betriebssystem kein dunkles Farbschema
   meldet und der Mensch den Umschalter nicht manuell betätigt hat. --- */
:root {
  --bg: #f4f6fb;
  --bg-grid: #e9edf7;
  --surface: #ffffff;
  --surface-alt: #edf1f9;
  --text: #12172b;
  --text-muted: #4b5570;
  --accent: #1f3a8f;
  --accent-contrast: #ffffff;
  --accent-2: #c9920a;
  --accent-2-soft: #f4b400;
  --border: #d9e0ef;
  --shadow: 0 20px 40px -24px rgba(31, 58, 143, 0.35);
}

/* --- Dunkles Thema, automatisch anhand der Betriebssystem-/Browser-
   Einstellung aktiviert (kein JavaScript nötig). ----------------------- */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --bg-grid: #101a30;
    --surface: #131b2e;
    --surface-alt: #1b2540;
    --text: #eaf0ff;
    --text-muted: #a9b6d6;
    --accent: #6c93ff;
    --accent-contrast: #0b1220;
    --accent-2: #ffd34d;
    --accent-2-soft: #ffd34d;
    --border: #263256;
    --shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.6);
  }
}

/* --- Manuelle Übersteuerung über den Umschalter im Header --------------
   Wird per JavaScript als data-theme-Attribut gesetzt und hat dank
   höherer Selektor-Spezifität stets Vorrang vor der Systemeinstellung. */
html[data-theme="hell"] {
  --bg: #f4f6fb;
  --bg-grid: #e9edf7;
  --surface: #ffffff;
  --surface-alt: #edf1f9;
  --text: #12172b;
  --text-muted: #4b5570;
  --accent: #1f3a8f;
  --accent-contrast: #ffffff;
  --accent-2: #c9920a;
  --accent-2-soft: #f4b400;
  --border: #d9e0ef;
  --shadow: 0 20px 40px -24px rgba(31, 58, 143, 0.35);
}

html[data-theme="dunkel"] {
  --bg: #0b1220;
  --bg-grid: #101a30;
  --surface: #131b2e;
  --surface-alt: #1b2540;
  --text: #eaf0ff;
  --text-muted: #a9b6d6;
  --accent: #6c93ff;
  --accent-contrast: #0b1220;
  --accent-2: #ffd34d;
  --accent-2-soft: #ffd34d;
  --border: #263256;
  --shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.6);
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light dark;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 12% -10%, var(--bg-grid), transparent 45%),
    var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  transition: var(--transition-theme);
  line-height: 1.5;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

a {
  color: inherit;
}

.wrapper {
  max-width: 760px;
  margin: 0 auto;
  padding: var(--space-3) var(--space-3) var(--space-5);
}

/* --- Kopfzeile --------------------------------------------------------- */
.kopf {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) 0 var(--space-4);
}

.marke {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.01em;
}

.marke__zeichen {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
}

.theme-toggle {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
  font-family: var(--font-body);
  font-size: 0.82rem;
  cursor: pointer;
  transition: var(--transition-theme), transform 0.15s ease;
}

.theme-toggle:hover {
  transform: translateY(-1px);
}

.theme-toggle:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.theme-toggle__icon {
  font-size: 1rem;
}

/* --- Hero ---------------------------------------------------------------- */
.hero {
  text-align: left;
  margin-bottom: var(--space-4);
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-2);
}

.hero__eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-2-soft);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  line-height: 1.15;
  margin: 0 0 var(--space-2);
  letter-spacing: -0.01em;
}

.hero p {
  color: var(--text-muted);
  margin: 0;
  font-size: 1rem;
  max-width: none;
}

.hero p + p {
  margin-top: 0.6rem;
}

/* --- Formularkarte --------------------------------------------------- */
.karte {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  padding: var(--space-4);
  box-shadow: var(--shadow);
  transition: var(--transition-theme);
}

.ueberschrift {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.25;
  margin: 0 0 var(--space-3);
}

.feld {
  margin-bottom: var(--space-4);
}

.feld:last-of-type {
  margin-bottom: var(--space-3);
}

.feld__label {
  display: block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  margin: 0 0 var(--space-2);
}

.feld__hinweis {
  display: block;
  font-weight: 400;
  font-family: var(--font-body);
  color: var(--text-muted);
  font-size: 0.82rem;
  margin-top: 0.15rem;
}

/* Halbjahr: Segmented Control */
.segment {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
}

.segment button {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-m);
  border: 1.5px solid var(--border);
  background: var(--surface-alt);
  color: var(--text);
  cursor: pointer;
  transition: var(--transition-theme), transform 0.15s ease, border-color 0.15s ease;
}

.segment button:hover {
  transform: translateY(-1px);
}

.segment button.is-active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-contrast);
}

/* Jahrgang: Pillen-Raster */
.pillen {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(52px, 1fr));
  gap: var(--space-1);
}

.pillen button {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  padding: 0.7rem 0;
  border-radius: var(--radius-s);
  border: 1.5px solid var(--border);
  background: var(--surface-alt);
  color: var(--text);
  cursor: pointer;
  transition: var(--transition-theme), transform 0.15s ease, border-color 0.15s ease;
}

.pillen button:hover {
  transform: translateY(-1px);
}

.pillen button.is-active {
  background: var(--accent-2-soft);
  border-color: var(--accent-2-soft);
  color: #1b1204;
  font-weight: 700;
}

/* CTA-Button */
.cta {
  width: 100%;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  padding: 0.95rem 1rem;
  border-radius: var(--radius-m);
  border: none;
  background: var(--accent);
  color: var(--accent-contrast);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  transition: transform 0.15s ease, opacity 0.15s ease, background-color 0.3s ease;
}

.cta:hover:not(:disabled) {
  transform: translateY(-1px);
}

.cta:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* Sternkranz-Spinner (Signatur-Element) */
.sternkranz {
  --groesse: 18px;
  position: relative;
  width: var(--groesse);
  height: var(--groesse);
  display: none;
}

.cta.is-loading .sternkranz {
  display: inline-block;
}

.cta.is-loading .cta__text {
  display: none;
}

.sternkranz span {
  position: absolute;
  top: 0;
  left: 50%;
  width: 2.5px;
  height: 2.5px;
  margin-left: -1.25px;
  border-radius: 50%;
  background: var(--accent-contrast);
  transform-origin: 1.25px 9px;
  animation: sternkranz-blink 1.1s linear infinite;
}

@keyframes sternkranz-blink {
  0%, 100% { opacity: 0.25; }
  50% { opacity: 1; }
}

/* --- Status & Ergebnis --------------------------------------------------- */
.status {
  min-height: 1.4rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: var(--space-2);
  text-align: center;
}

.ergebnis {
  margin-top: var(--space-4);
  animation: einblenden 0.4s ease both;
}

@keyframes einblenden {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.stempel {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1.5px dashed var(--accent);
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
  margin-bottom: var(--space-3);
}

.tabelle-wrapper {
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--surface);
}

.quelle-status {
  margin: 0.5rem 0 0;
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.quelle-status--fallback {
  color: var(--accent-2);
}

table {
  width: 100%;
  border-collapse: collapse;
}

thead th {
  text-align: left;
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--accent-contrast);
  background: var(--accent);
  padding: 0.75rem 1rem;
}

tbody td {
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.92rem;
  vertical-align: top;
}

tbody td:first-child {
  font-family: var(--font-mono);
  white-space: nowrap;
  color: var(--accent);
}

tbody tr:nth-child(even) {
  background: var(--surface-alt);
}

/* Responsive: Tabelle -> gestapelte Karten */
@media (max-width: 620px) {
  thead {
    display: none;
  }
  table, tbody, tr, td {
    display: block;
    width: 100%;
  }
  tbody tr {
    border-top: 1px solid var(--border);
    padding: var(--space-2) 1rem;
  }
  tbody tr:first-child {
    border-top: none;
  }
  tbody td {
    border: none;
    padding: 0.2rem 0;
  }
  tbody td::before {
    content: attr(data-label);
    display: block;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
  }
}

/* --- Status-Boxen: Warnung & Fehler -------------------------------------- */
.hinweisbox {
  margin-top: var(--space-3);
  padding: 0.9rem 1.1rem;
  border-radius: var(--radius-m);
  font-size: 0.9rem;
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  animation: einblenden 0.3s ease both;
}

.hinweisbox[hidden] {
  display: none;
}

.hinweisbox::before {
  flex-shrink: 0;
  font-weight: 700;
  line-height: 1.3;
}

.hinweisbox--warnung {
  background: color-mix(in srgb, var(--accent-2-soft) 16%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--accent-2-soft) 45%, var(--border));
  color: var(--text);
}

.hinweisbox--warnung::before {
  content: "\26A0"; /* ⚠ */
  color: var(--accent-2);
}

.hinweisbox--fehler {
  background: color-mix(in srgb, #d9435e 14%, var(--surface));
  border: 1px solid color-mix(in srgb, #d9435e 45%, var(--border));
  color: var(--text);
}

.hinweisbox--fehler::before {
  content: "\2715"; /* ✕ */
  color: #d9435e;
}

/* --- Sekundärer Button (ICS-Download) ------------------------------------ */
.cta--sekundaer {
  width: 100%;
  margin-top: var(--space-3);
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-m);
  border: 1.5px solid var(--accent);
  background: transparent;
  color: var(--accent);
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: transform 0.15s ease, background-color 0.2s ease, color 0.2s ease;
}

.cta--sekundaer:hover {
  transform: translateY(-1px);
  background: var(--accent);
  color: var(--accent-contrast);
}

.cta--sekundaer[aria-disabled="true"] {
  opacity: 0.45;
  pointer-events: none;
  cursor: not-allowed;
}

.feld--kalendermodus {
  margin-top: var(--space-4);
  margin-bottom: var(--space-2);
}

/* --- Erinnerungs-Checkbox ------------------------------------------------ */
.checkbox-feld {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin: var(--space-2) 0 var(--space-3);
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-s);
  background: var(--surface-alt);
  font-size: 0.88rem;
  cursor: pointer;
  transition: var(--transition-theme), border-color 0.15s ease;
}

.checkbox-feld:hover {
  border-color: var(--accent);
}

.checkbox-feld input[type="checkbox"] {
  width: 1.1rem;
  height: 1.1rem;
  accent-color: var(--accent);
  cursor: pointer;
  flex-shrink: 0;
}

/* --- Abo-URL-Hinweis ---------------------------------------------------- */
.abo-hinweis {
  margin-top: var(--space-3);
  padding: var(--space-3);
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-m);
  font-size: 0.88rem;
}

.abo-hinweis__label {
  display: block;
  font-weight: 600;
  font-family: var(--font-display);
  margin-bottom: 0.4rem;
  color: var(--text);
}

.abo-hinweis__url {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  word-break: break-all;
  text-decoration: none;
  margin-bottom: 0.6rem;
  padding: 0.4rem 0.6rem;
  background: var(--surface-alt);
  border-radius: var(--radius-s);
}

.abo-hinweis__url:hover {
  text-decoration: underline;
}

.abo-hinweis__text {
  display: block;
  color: var(--text-muted);
  font-size: 0.82rem;
}

/* --- Hinweisbereich (inoffizielle Seite + Quelle) ------------------------ */
.hinweis {
  margin-top: var(--space-5);
  padding-top: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
  text-align: center;
}

.hinweis a {
  color: var(--accent);
  text-decoration: none;
}

.hinweis a:hover {
  text-decoration: underline;
}

.hinweis strong {
  color: var(--text);
}

footer {
  margin-top: var(--space-2);
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

footer a {
  color: var(--accent);
  text-decoration: none;
}

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

footer .footer__version {
  display: block;
  margin-top: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  opacity: 0.8;
}