/* ==========================================================================
   Rätselseite – Design-System
   Prinzip: schwarze Bühne, warmes Weiß glüht als Akzent, Gold-Gelb für Links.
   Ein Bold-Moment (Grid-Hero), der Rest bewusst ruhig.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Archivo:wght@500;600;700&family=IBM+Plex+Sans:wght@400;500&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    /* Farben */
    --bg:            #060606;
    --bg-elevated:   #0e0e0d;
    --bg-elevated-2: #141412;
    --border:        rgba(244, 242, 234, 0.09);
    --border-strong: rgba(244, 242, 234, 0.18);

    --white:         #f5f3ec;   /* warmer Weißton statt #fff, sonst zu hart auf Schwarz */
    --text:          #e6e4dc;
    --text-muted:    #8f8d84;
    --text-faint:    #5c5a53;

    --gold:          #d9b34d;   /* Link-Grundfarbe, gedämpftes Gelb */
    --gold-bright:   #f0cf6b;   /* Hover-Zustand */

    --success:       #8fbf8f;
    --danger:        #d97b7b;

    /* Glow */
    --glow-white: 0 0 24px rgba(245, 243, 236, 0.18);
    --glow-white-strong: 0 0 40px rgba(245, 243, 236, 0.28);
    --glow-gold: 0 0 18px rgba(217, 179, 77, 0.35);

    /* Typografie */
    --font-display: 'Archivo', sans-serif;
    --font-body: 'IBM Plex Sans', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Layout */
    --max-width: 1120px;
    --radius: 10px;
    --radius-sm: 6px;
    --space-1: 0.5rem;
    --space-2: 0.75rem;
    --space-3: 1.25rem;
    --space-4: 2rem;
    --space-5: 3.5rem;
}

/* ---- Reset & Grundgerüst ------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

h1, h2, h3 {
    font-family: var(--font-display);
    color: var(--white);
    line-height: 1.15;
    margin: 0 0 var(--space-2);
    letter-spacing: -0.01em;
}
h1 { font-size: clamp(2rem, 6vw, 3rem); font-weight: 700; }
h2 { font-size: clamp(1.4rem, 4vw, 1.9rem); font-weight: 600; }
h3 { font-size: 1.1rem; font-weight: 600; }

p { max-width: 62ch; color: var(--text); }
p.lead { color: var(--text-muted); font-size: 1.05rem; }

a {
    color: var(--gold);
    text-decoration: none;
    transition: color 0.15s ease, text-shadow 0.15s ease;
}
a:hover, a:focus-visible {
    color: var(--gold-bright);
    text-shadow: var(--glow-gold);
}

/* Sichtbarer Fokus-Ring für Tastatursteuerung – nicht entfernen */
:focus-visible {
    outline: 2px solid var(--gold);
    outline-offset: 3px;
}

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

.container {
    width: 100%;
    max-width: var(--max-width);
    margin-inline: auto;
    padding-inline: var(--space-3);
}

.visually-hidden {
    position: absolute; width: 1px; height: 1px;
    overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap;
}

/* ---- Buttons -------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5em;
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.8rem 1.4rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-strong);
    background: transparent;
    color: var(--white);
    cursor: pointer;
    transition: box-shadow 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}
.btn:hover, .btn:focus-visible { color: var(--white); }

.btn-primary {
    background: var(--white);
    color: #0a0a09;
    border-color: var(--white);
    font-weight: 600;
}
.btn-primary:hover, .btn-primary:focus-visible {
    box-shadow: var(--glow-white-strong);
    color: #0a0a09;
}

.btn-secondary:hover, .btn-secondary:focus-visible {
    border-color: var(--white);
    box-shadow: var(--glow-white);
}

.btn-google {
    background: var(--bg-elevated);
    border-color: var(--border-strong);
    width: 100%;
}
.btn-google:hover, .btn-google:focus-visible {
    box-shadow: var(--glow-white);
    border-color: var(--white);
}

/* ---- Haupt-Navigation (Startseite & Inhaltsseiten) ------------------------ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 40;
    background: rgba(6, 6, 6, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}
.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-block: 1rem;
}
.brand {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--white);
}
.brand:hover { text-shadow: var(--glow-white); color: var(--white); }

.main-nav { display: none; gap: var(--space-4); }
.main-nav a { color: var(--text); font-size: 0.95rem; }
.main-nav a:hover { color: var(--gold-bright); }

.nav-actions { display: flex; align-items: center; gap: var(--space-2); }

.nav-toggle {
    display: inline-flex;
    background: none; border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.7rem;
    color: var(--white);
}

.main-nav.is-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    padding: var(--space-3);
    gap: var(--space-2);
}

@media (min-width: 860px) {
    .main-nav { display: flex; position: static; background: none; border: none; padding: 0; flex-direction: row; }
    .nav-toggle { display: none; }
}

/* ---- Rätsel-Header (minimal: zurück / bestenliste / einstellungen) -------- */
.puzzle-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.9rem var(--space-3);
    border-bottom: 1px solid var(--border);
    background: var(--bg);
}
.puzzle-header .back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4em;
    color: var(--text);
    font-size: 0.95rem;
}
.puzzle-header .back-link:hover { color: var(--gold-bright); }
.puzzle-header .puzzle-title {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-muted);
    text-align: center;
}
.puzzle-header .puzzle-actions { display: flex; gap: var(--space-1); }
.puzzle-header .icon-btn {
    display: inline-flex;
    align-items: center; justify-content: center;
    width: 2.4rem; height: 2.4rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    color: var(--text);
}
.puzzle-header .icon-btn:hover {
    border-color: var(--white);
    box-shadow: var(--glow-white);
    color: var(--white);
}

/* ---- Hero mit Grid-Visual --------------------------------------------------- */
.hero {
    padding-block: var(--space-5) var(--space-4);
    display: grid;
    gap: var(--space-4);
}
.hero-grid-visual {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 6px;
    max-width: 280px;
}
.hero-grid-visual span {
    aspect-ratio: 1;
    border-radius: 3px;
    border: 1px solid var(--border);
    background: var(--bg-elevated);
}
.hero-grid-visual span.lit {
    border-color: var(--white);
    background: rgba(245, 243, 236, 0.06);
    box-shadow: var(--glow-white);
}
.hero-grid-visual span.marked {
    border-color: var(--gold);
    color: var(--gold-bright);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    display: flex; align-items: center; justify-content: center;
    box-shadow: var(--glow-gold);
}

@media (min-width: 760px) {
    .hero { grid-template-columns: 1.2fr 1fr; align-items: center; }
}

/* ---- Kategorie- / Rätsel-Karten ------------------------------------------- */
.card-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3);
}
@media (min-width: 640px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .card-grid { grid-template-columns: repeat(3, 1fr); } }

.card {
    display: block;
    padding: var(--space-3);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-elevated);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}
.card:hover, .card:focus-visible {
    border-color: var(--border-strong);
    box-shadow: var(--glow-white);
    transform: translateY(-2px);
}
.card h3 { margin-bottom: 0.3rem; }
.card p { color: var(--text-muted); font-size: 0.92rem; margin-bottom: var(--space-2); }

.badge {
    display: inline-flex;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
    border: 1px solid var(--border-strong);
    color: var(--text-muted);
}
.badge.badge-free { color: var(--success); border-color: rgba(143, 191, 143, 0.35); }
.badge.badge-paid { color: var(--gold); border-color: rgba(217, 179, 77, 0.35); }

.card-meta { display: flex; gap: 0.5rem; align-items: center; margin-bottom: var(--space-2); }

/* ---- Formulare (Login/Registrierung) --------------------------------------- */
.auth-shell {
    max-width: 420px;
    margin-inline: auto;
    padding-block: var(--space-5);
}
.form-field { margin-bottom: var(--space-3); }
.form-field label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
}
.form-field input {
    width: 100%;
    padding: 0.85rem 1rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    color: var(--white);
    font-family: var(--font-body);
    font-size: 1rem;
}
.form-field input:focus-visible { border-color: var(--white); box-shadow: var(--glow-white); }

.divider {
    display: flex; align-items: center; gap: var(--space-2);
    color: var(--text-faint); font-size: 0.85rem;
    margin-block: var(--space-3);
}
.divider::before, .divider::after {
    content: ""; flex: 1; height: 1px; background: var(--border);
}

.alert {
    padding: 0.85rem 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-strong);
    font-size: 0.9rem;
    margin-bottom: var(--space-3);
}
.alert-error { border-color: rgba(217, 123, 123, 0.4); color: var(--danger); }
.alert-success { border-color: rgba(143, 191, 143, 0.4); color: var(--success); }

/* ---- Bestenliste ------------------------------------------------------------ */
.leaderboard { width: 100%; border-collapse: collapse; }
.leaderboard th, .leaderboard td {
    text-align: left;
    padding: 0.7rem 0.6rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.92rem;
}
.leaderboard th {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}
.leaderboard td.rank { font-family: var(--font-mono); color: var(--gold); }
.leaderboard tr.is-you { background: rgba(245, 243, 236, 0.03); }

/* ---- Preis-Pakete ------------------------------------------------------------ */
.package-card {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: var(--space-4);
    background: var(--bg-elevated);
}
.package-price {
    font-family: var(--font-mono);
    font-size: 2rem;
    color: var(--white);
    margin-block: var(--space-2);
}

/* ---- Footer + Cookie-Banner ------------------------------------------------- */
.site-footer {
    border-top: 1px solid var(--border);
    padding-block: var(--space-4);
    margin-top: var(--space-5);
}
.site-footer .container {
    display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-4);
    align-items: center; justify-content: space-between;
}
.footer-links { display: flex; gap: var(--space-3); flex-wrap: wrap; }
.footer-links a { color: var(--text-muted); font-size: 0.88rem; }
.footer-links a:hover { color: var(--gold-bright); }
.footer-note { color: var(--text-faint); font-size: 0.82rem; }

.cookie-banner {
    position: fixed;
    inset-inline: 0;
    bottom: 0;
    z-index: 100;
    background: var(--bg-elevated);
    border-top: 1px solid var(--border-strong);
    padding: var(--space-3);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 -8px 30px rgba(0,0,0,0.5);
    transform: translateY(0);
    transition: transform 0.3s ease;
}
.cookie-banner[hidden] { display: none; }
.cookie-banner p { margin: 0; font-size: 0.88rem; color: var(--text-muted); max-width: 60ch; }
.cookie-banner .btn { padding: 0.65rem 1.2rem; font-size: 0.88rem; }

/* ---- Sudoku ---------------------------------------------------------------- */
.sudoku-shell {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    padding-bottom: var(--space-4);
}

.sudoku-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: 480px;
}
.sudoku-timer {
    font-family: var(--font-mono);
    color: var(--text-muted);
    font-size: 0.95rem;
    letter-spacing: 0.02em;
}
.link-quiet { color: var(--text-muted); font-size: 0.88rem; }
.link-quiet:hover { color: var(--gold-bright); }

.sudoku-grid {
    display: grid;
    grid-template-rows: repeat(9, 1fr);
    width: 100%;
    max-width: 480px;
    aspect-ratio: 1;
    border: 2px solid var(--border-strong);
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--bg-elevated);
}
.sudoku-row { display: grid; grid-template-columns: repeat(9, 1fr); }

.sudoku-cell {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: clamp(0.9rem, 3.6vw, 1.3rem);
    color: var(--gold);
    background: transparent;
    border: 1px solid var(--border);
    padding: 0;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}
/* Dickere Linien um jeden 3x3-Block, klassisches Sudoku-Layout */
.sudoku-row:nth-child(3n) .sudoku-cell { border-bottom-color: var(--border-strong); border-bottom-width: 2px; }
.sudoku-cell:nth-child(3n) { border-right-color: var(--border-strong); border-right-width: 2px; }

.sudoku-cell.is-given {
    color: var(--white);
    font-weight: 500;
    cursor: default;
}
.sudoku-cell:disabled { cursor: default; }

.sudoku-cell.is-related { background: rgba(245, 243, 236, 0.035); }
.sudoku-cell.is-same-value { color: var(--gold-bright); }
.sudoku-cell.is-selected {
    background: rgba(245, 243, 236, 0.09);
    box-shadow: inset 0 0 0 2px var(--white), var(--glow-white);
    z-index: 1;
}
.sudoku-cell.is-conflict { color: var(--danger); }
.sudoku-cell.is-conflict.is-selected { box-shadow: inset 0 0 0 2px var(--danger); }

.sudoku-cell:focus-visible { outline-offset: -2px; }

.sudoku-notes {
    position: absolute;
    inset: 2px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
    pointer-events: none;
}
.sudoku-notes span {
    font-family: var(--font-mono);
    font-size: 0.55rem;
    color: var(--text-faint);
    display: flex;
    align-items: center;
    justify-content: center;
}

.sudoku-numpad {
    position: sticky;
    bottom: 0;
    display: grid;
    grid-template-columns: repeat(9, 1fr);
    gap: 6px;
    width: 100%;
    max-width: 480px;
    padding: var(--space-2);
    background: rgba(6, 6, 6, 0.9);
    backdrop-filter: blur(8px);
    border-radius: var(--radius);
}
.numpad-btn {
    min-height: 44px; /* Mindestgröße für Touch-Ziele */
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 1.05rem;
    color: var(--white);
    background: var(--bg-elevated);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
}
.numpad-btn:hover, .numpad-btn:focus-visible { box-shadow: var(--glow-white); border-color: var(--white); }
.numpad-btn-wide { grid-column: span 2; font-size: 0.75rem; font-family: var(--font-body); }
.numpad-btn.is-active { color: var(--gold-bright); border-color: var(--gold); box-shadow: var(--glow-gold); }

.sudoku-status {
    min-height: 1.4em;
    color: var(--success);
    font-size: 0.9rem;
    text-align: center;
}

/* ---- Einstellungen-Dialog (natives <dialog>, barrierefrei per default) --------- */
.settings-dialog {
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    background: var(--bg-elevated);
    color: var(--text);
    padding: var(--space-4);
    width: min(90vw, 360px);
}
.settings-dialog::backdrop { background: rgba(0, 0, 0, 0.6); }
.settings-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-block: var(--space-1);
    font-size: 0.92rem;
}