/* ============================================================================
   Havannah.eu – Design System
   Eigenständige hexagonale Designsprache (keine fremden Marken/Assets).
   Dark (Standard) + Light via data-theme auf <html>.
   WCAG 2.1 AA: Textkontraste ≥ 4,5:1, sichtbare Fokus-Indikatoren,
   prefers-reduced-motion, responsiv (Mobil bis Desktop).
   ========================================================================== */

/* ---------------------------------------------------------------------------
   1. Design-Tokens
   --------------------------------------------------------------------------- */
:root {
    color-scheme: dark;

    --bg: #0e1424;
    --bg-grad-a: #101728;
    --bg-grad-b: #0b101f;
    --surface: #161e33;
    --surface-2: #1d2740;
    --surface-3: #24304d;
    --border: #2b3654;
    --border-strong: #3a4a70;

    --text: #e9edf7;
    --text-muted: #a9b4cf;
    --text-faint: #7d89a6;

    --accent: #f2b23e;
    --accent-hover: #ffc14d;
    --accent-soft: #2b2012;
    --accent-contrast: #221607;          /* Text auf Akzent-Flächen */

    --info: #58a6ff;
    --info-soft: #10233c;
    --success: #3dd68c;
    --success-soft: #0d2b1e;
    --danger: #ff6b72;
    --danger-soft: #381419;
    --danger-btn: #b42318;
    --danger-btn-hover: #c42a2f;

    --focus: #7fb3ff;

    --board-bg: #101728;
    --board-frame: #3a4a70;
    --board-cell: #1a2236;
    --board-cell-hover: #223055;
    --board-cell-stroke: #33405f;
    --stone-black: #10131c;
    --stone-black-stroke: #565f74;
    --stone-white: #f6f8fc;
    --stone-white-stroke: #a7b0c5;

    --header-bg: rgba(14, 20, 36, 0.92);
    --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.35), 0 4px 14px rgba(0, 0, 0, 0.28);
    --shadow-2: 0 2px 6px rgba(0, 0, 0, 0.4), 0 12px 32px rgba(0, 0, 0, 0.35);

    --radius-s: 6px;
    --radius-m: 10px;
    --radius-l: 16px;
    --radius-pill: 999px;

    --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
                 Arial, "Noto Sans", "Liberation Sans", sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, "Cascadia Mono", Consolas,
                 "Liberation Mono", Menlo, monospace;

    --transition-fast: 120ms ease;
    --transition-med: 200ms ease;

    --header-h: 56px;
}

[data-theme="light"] {
    color-scheme: light;

    --bg: #f2f4fa;
    --bg-grad-a: #f6f8fd;
    --bg-grad-b: #e9edf6;
    --surface: #ffffff;
    --surface-2: #eef1f8;
    --surface-3: #e2e7f2;
    --border: #c9d2e4;
    --border-strong: #aab6cf;

    --text: #1a2130;
    --text-muted: #55617a;
    --text-faint: #7b869e;

    --accent: #9c5a00;
    --accent-hover: #b06a00;
    --accent-soft: #f9f0de;
    --accent-contrast: #ffffff;

    --info: #0a58ca;
    --info-soft: #e2edfb;
    --success: #14784a;
    --success-soft: #dff3e9;
    --danger: #b42318;
    --danger-soft: #fae3e4;
    --danger-btn: #b42318;
    --danger-btn-hover: #99201a;

    --focus: #0a58ca;

    --board-bg: #e4e9f4;
    --board-frame: #8a94ab;
    --board-cell: #f8fafe;
    --board-cell-hover: #dbe3f3;
    --board-cell-stroke: #aab6cf;
    --stone-black: #10131c;
    --stone-black-stroke: #3c4457;
    --stone-white: #ffffff;
    --stone-white-stroke: #8a94ab;

    --header-bg: rgba(242, 244, 250, 0.94);
    --shadow-1: 0 1px 2px rgba(26, 33, 48, 0.08), 0 4px 14px rgba(26, 33, 48, 0.08);
    --shadow-2: 0 2px 6px rgba(26, 33, 48, 0.1), 0 12px 32px rgba(26, 33, 48, 0.12);
}

/* ---------------------------------------------------------------------------
   2. Reset & Basis
   --------------------------------------------------------------------------- */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.55;
    color: var(--text);
    background: linear-gradient(180deg, var(--bg-grad-a), var(--bg-grad-b)) fixed var(--bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

img,
svg {
    max-width: 100%;
    vertical-align: middle;
}

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

a:hover {
    text-decoration: underline;
    text-underline-offset: 3px;
}

h1, h2, h3, h4 {
    line-height: 1.2;
    margin: 0 0 0.5em;
    font-weight: 700;
}

h1 { font-size: clamp(1.6rem, 2.2vw + 0.9rem, 2.4rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.3rem, 1.4vw + 0.8rem, 1.7rem); }
h3 { font-size: 1.15rem; }
h4 { font-size: 1rem; }

p { margin: 0 0 1em; }

hr {
    border: 0;
    border-top: 1px solid var(--border);
    margin: 1.5rem 0;
}

:focus-visible {
    outline: 3px solid var(--focus);
    outline-offset: 2px;
    border-radius: var(--radius-s);
}

::selection {
    background: var(--accent);
    color: var(--accent-contrast);
}

/* Screenreader-only */
.sr-only {
    position: absolute !important;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
}

/* Live-Regionen unsichtbar, aber ankündigbar */
.visually-hidden-live {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

/* ---------------------------------------------------------------------------
   3. Layout-Grundgerüst
   --------------------------------------------------------------------------- */
.container {
    width: 100%;
    max-width: 1200px;
    margin-inline: auto;
    padding-inline: 16px;
}

main#main {
    flex: 1 0 auto;
    padding-block: 24px 56px;
}

.skip-link {
    position: absolute;
    top: -60px;
    left: 8px;
    z-index: 200;
    background: var(--accent);
    color: var(--accent-contrast);
    font-weight: 600;
    padding: 10px 16px;
    border-radius: var(--radius-m);
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 8px;
    text-decoration: none;
}

.page-head {
    margin-bottom: 24px;
}

.page-head h1 { margin-bottom: 0.15em; }
.page-subtitle {
    color: var(--text-muted);
    margin: 0;
    max-width: 70ch;
}

.section {
    margin-block: 40px;
}

.section-title {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

/* ---------------------------------------------------------------------------
   4. Header & Navigation
   --------------------------------------------------------------------------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--header-bg);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    display: flex;
    align-items: center;
    gap: 14px;
    min-height: var(--header-h);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: -0.01em;
}

.brand:hover { text-decoration: none; }
.brand img { display: block; }

.brand-name { white-space: nowrap; }

.main-nav {
    display: flex;
    align-items: center;
    gap: 2px;
    margin-inline: auto;
}

.main-nav a {
    display: inline-block;
    padding: 7px 12px;
    border-radius: var(--radius-m);
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.95rem;
}

.main-nav a:hover {
    color: var(--text);
    background: var(--surface-2);
    text-decoration: none;
}

.main-nav a[aria-current="page"] {
    color: var(--text);
    background: var(--surface-2);
    box-shadow: inset 0 -2px 0 var(--accent);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}

.user-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 4px 12px 4px 4px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    font-weight: 600;
    max-width: 220px;
}

.user-pill:hover {
    border-color: var(--border-strong);
    text-decoration: none;
}

.user-pill .username-label {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border: 1px solid var(--border);
    border-radius: var(--radius-m);
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    font: inherit;
    padding: 0;
}

.icon-btn:hover {
    border-color: var(--border-strong);
    background: var(--surface-2);
}

.icon-btn svg { width: 18px; height: 18px; }

.nav-toggle {
    display: none;
}

.mobile-nav-close { display: none; }

/* ---------------------------------------------------------------------------
   5. Buttons
   --------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 9px 18px;
    border-radius: var(--radius-m);
    border: 1px solid var(--border-strong);
    background: var(--surface);
    color: var(--text);
    font: inherit;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    text-align: center;
    transition: background var(--transition-fast), border-color var(--transition-fast),
                transform var(--transition-fast), box-shadow var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.btn:hover {
    background: var(--surface-2);
    border-color: var(--border-strong);
    text-decoration: none;
}

.btn:active { transform: translateY(1px); }

.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--accent-contrast);
}

.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
}

[data-theme="light"] .btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    color: #ffffff;
}

.btn-danger {
    background: var(--danger-btn);
    border-color: var(--danger-btn);
    color: #ffffff;
}

.btn-danger:hover {
    background: var(--danger-btn-hover);
    border-color: var(--danger-btn-hover);
}

.btn-ghost {
    background: transparent;
    border-color: transparent;
    color: var(--text-muted);
}

.btn-ghost:hover {
    background: var(--surface-2);
    color: var(--text);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-strong);
}

.btn-lg {
    padding: 13px 26px;
    font-size: 1.05rem;
    border-radius: var(--radius-l);
}

.btn-sm {
    padding: 5px 12px;
    font-size: 0.85rem;
    border-radius: var(--radius-s);
}

.btn-block { width: 100%; }

.btn[disabled],
.btn[aria-disabled="true"] {
    opacity: 0.55;
    cursor: not-allowed;
    pointer-events: none;
}

.btn .spinner-mini {
    width: 16px;
    height: 16px;
    border-width: 2px;
}

/* ---------------------------------------------------------------------------
   6. Formulare
   --------------------------------------------------------------------------- */
.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.form-grid.two-col {
    grid-template-columns: 1fr 1fr;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.field > label,
.field-label {
    font-weight: 600;
    font-size: 0.92rem;
}

.field-hint {
    color: var(--text-muted);
    font-size: 0.85rem;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="date"],
input[type="number"],
input[type="search"],
input[type="url"],
select,
textarea {
    width: 100%;
    padding: 10px 12px;
    border-radius: var(--radius-m);
    border: 1px solid var(--border-strong);
    background: var(--surface);
    color: var(--text);
    font: inherit;
    font-size: 0.95rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

textarea { min-height: 96px; resize: vertical; }

input:hover,
select:hover,
textarea:hover {
    border-color: var(--text-faint);
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: none;
    border-color: var(--focus);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--focus) 35%, transparent);
}

input[aria-invalid="true"],
select[aria-invalid="true"],
textarea[aria-invalid="true"] {
    border-color: var(--danger);
}

input[aria-invalid="true"]:focus-visible,
select[aria-invalid="true"]:focus-visible {
    box-shadow: 0 0 0 3px var(--danger-soft);
}

.checkbox-row {
    display: flex;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 10px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-m);
    background: var(--surface);
}

.checkbox-row input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    flex: none;
    accent-color: var(--accent);
}

.checkbox-row label {
    font-size: 0.92rem;
    color: var(--text-muted);
    min-width: 0;
    flex: 1 1 auto;
}

.checkbox-row a.muted {
    font-size: 0.85rem;
    overflow-wrap: anywhere;
}

.checkbox-row label a { color: var(--accent); }

.fieldset {
    border: 1px solid var(--border);
    border-radius: var(--radius-l);
    padding: 16px;
    margin: 0;
}

.fieldset legend {
    font-weight: 700;
    padding-inline: 8px;
}

/* Segmented-Optionen (Brettgröße, Farbe, Zeit) */
.segmented {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    border: 0;
    padding: 0;
    margin: 0;
}

.segmented input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.segmented label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 40px;
    padding: 8px 14px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-m);
    background: var(--surface);
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.92rem;
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast),
                border-color var(--transition-fast);
}

.segmented label:hover {
    border-color: var(--text-faint);
    color: var(--text);
}

.segmented input:focus-visible + label {
    outline: 3px solid var(--focus);
    outline-offset: 2px;
}

.segmented input:checked + label {
    background: var(--accent-soft);
    border-color: var(--accent);
    color: var(--accent);
}

[data-theme="light"] .segmented input:checked + label { color: var(--accent); }

.form-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    margin-top: 20px;
}

.form-note {
    color: var(--text-muted);
    font-size: 0.88rem;
}

/* Fehler-Alerts */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-m);
    border: 1px solid;
    font-size: 0.95rem;
    margin-bottom: 16px;
}

.alert-error {
    background: var(--danger-soft);
    border-color: var(--danger);
    color: var(--danger);
}

.alert-success {
    background: var(--success-soft);
    border-color: var(--success);
    color: var(--success);
}

.alert-info {
    background: var(--info-soft);
    border-color: var(--info);
    color: var(--info);
}

.alert ul {
    margin: 0;
    padding-left: 20px;
}

.alert li + li { margin-top: 4px; }

/* ---------------------------------------------------------------------------
   7. Karten, Badges, Chips
   --------------------------------------------------------------------------- */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-l);
    padding: 20px;
    box-shadow: var(--shadow-1);
}

.card + .card { margin-top: 16px; }

.card-title {
    font-size: 1.02rem;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.grid-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 2px 9px;
    border-radius: var(--radius-pill);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    border: 1px solid var(--border-strong);
    background: var(--surface-2);
    color: var(--text-muted);
    white-space: nowrap;
}

.badge-accent { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }
.badge-success { background: var(--success-soft); border-color: var(--success); color: var(--success); }
.badge-danger { background: var(--danger-soft); border-color: var(--danger); color: var(--danger); }
.badge-info { background: var(--info-soft); border-color: var(--info); color: var(--info); }

.rating-chip {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.85rem;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    padding: 2px 10px;
    color: var(--text);
}

.avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--info));
    color: #ffffff;
    font-weight: 700;
    overflow: hidden;
    flex: none;
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-sm { width: 30px; height: 30px; font-size: 0.8rem; }
.avatar-lg { width: 88px; height: 88px; font-size: 2rem; }

.country-flag { margin-right: 2px; }

/* ---------------------------------------------------------------------------
   8. Home / Hero
   --------------------------------------------------------------------------- */
.hero {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 32px;
    align-items: center;
    padding-block: 32px 8px;
}

.hero h1 {
    font-size: clamp(1.9rem, 3vw + 1rem, 3rem);
    margin-bottom: 0.3em;
}

.hero p.lead {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 56ch;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 24px;
}

.hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}

.stat-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text-muted);
    font-size: 0.9rem;
}

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

.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-visual .mini-board-wrap {
    width: min(100%, 420px);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.feature-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-l);
    padding: 22px;
    transition: transform var(--transition-med), border-color var(--transition-med);
}

.feature-card:hover {
    transform: translateY(-3px);
    border-color: var(--border-strong);
}

.feature-icon {
    width: 46px;
    height: 46px;
    border-radius: var(--radius-m);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-soft);
    color: var(--accent);
    margin-bottom: 14px;
}

.feature-icon svg { width: 24px; height: 24px; }

.feature-card h3 { margin-bottom: 6px; }
.feature-card p { color: var(--text-muted); margin: 0; font-size: 0.95rem; }

.how-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
}

.how-card {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-l);
    padding: 22px;
    overflow: hidden;
}

.how-card .how-symbol {
    width: 64px;
    height: 64px;
    margin-bottom: 12px;
    color: var(--accent);
}

.how-card .how-symbol svg { width: 100%; height: 100%; }

.how-card h3 { margin-bottom: 6px; }
.how-card p { color: var(--text-muted); margin: 0; }

.toplist {
    list-style: none;
    margin: 0;
    padding: 0;
}

.toplist li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 4px;
    border-bottom: 1px solid var(--border);
}

.toplist li:last-child { border-bottom: 0; }

.toplist .rank {
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--text-muted);
    width: 30px;
    text-align: center;
    flex: none;
}

.toplist .rank-1 { color: var(--accent); }
.toplist .rank-2 { color: var(--info); }
.toplist .rank-3 { color: var(--success); }

.toplist .player-link {
    color: var(--text);
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.toplist .rating-chip { margin-left: auto; }

/* ---------------------------------------------------------------------------
   9. Play-Seite (Konfiguration)
   --------------------------------------------------------------------------- */
.play-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 380px);
    gap: 24px;
    align-items: start;
}

.mode-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
}

.mode-tab {
    flex: 1;
    padding: 14px 16px;
    border-radius: var(--radius-l);
    border: 1px solid var(--border-strong);
    background: var(--surface);
    color: var(--text-muted);
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    text-align: left;
    transition: background var(--transition-fast), border-color var(--transition-fast);
}

.mode-tab:hover { border-color: var(--text-faint); }

.mode-tab[aria-selected="true"] {
    background: var(--accent-soft);
    border-color: var(--accent);
    color: var(--text);
    box-shadow: inset 0 0 0 1px var(--accent);
}

.mode-tab .mode-title { display: block; font-size: 1rem; }
.mode-tab .mode-desc { display: block; font-size: 0.85rem; font-weight: 500; color: var(--text-muted); margin-top: 2px; }

.config-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
}

.config-group h3 {
    font-size: 0.95rem;
    margin-bottom: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.preview-board-wrap {
    position: sticky;
    top: calc(var(--header-h) + 16px);
}

.matchmaking-panel { text-align: center; }

/* ---------------------------------------------------------------------------
   10. Brett (SVG)
   --------------------------------------------------------------------------- */
.board-wrap {
    position: relative;
    width: 100%;
    max-width: 720px;
    margin-inline: auto;
}

.board-frame {
    background:
        radial-gradient(ellipse at 50% 30%, rgba(242, 178, 62, 0.05), transparent 60%),
        var(--board-bg);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-l);
    box-shadow: var(--shadow-2);
    padding: clamp(4px, 1.2vw, 12px);
}

.board-svg {
    display: block;
    width: 100%;
    height: auto;
    touch-action: manipulation;
    -webkit-user-select: none;
    user-select: none;
}

.board-outline {
    fill: var(--board-bg);
    stroke: var(--board-frame);
    stroke-width: 0.09;
    stroke-linejoin: round;
}

.board-cell .cell-shape {
    fill: var(--board-cell);
    stroke: var(--board-cell-stroke);
    stroke-width: 0.055;
    stroke-linejoin: round;
    transition: fill var(--transition-fast), stroke var(--transition-fast);
}

.board-cell .stone-body {
    pointer-events: none;
    transition: opacity var(--transition-fast);
}

.board-cell .stone-black {
    fill: var(--stone-black);
    stroke: var(--stone-black-stroke);
    stroke-width: 0.05;
}

.board-cell .stone-white {
    fill: var(--stone-white);
    stroke: var(--stone-white-stroke);
    stroke-width: 0.05;
}

.ghost-stone {
    fill: var(--accent);
    opacity: 0.5;
    pointer-events: none;
}

.sel-ring {
    fill: none;
    stroke: var(--accent);
    stroke-width: 0.14;
    pointer-events: none;
}

.board-cell {
    cursor: pointer;
    outline: none;
}

.board-cell .cell-shape {
    transition: fill var(--transition-fast), stroke var(--transition-fast);
}

.board-cell[tabindex="0"]:hover .cell-shape,
.board-cell:focus-visible .cell-shape {
    fill: var(--board-cell-hover);
    stroke: var(--focus);
    stroke-width: 2.5;
}

.board-cell:focus-visible {
    outline: 3px solid var(--focus);
    outline-offset: 1px;
    border-radius: 6px;
}

.board-cell.is-disabled {
    cursor: default;
}

.board-cell.is-last .cell-shape {
    stroke: var(--accent);
    stroke-width: 3;
}

.board-cell .ghost-stone { pointer-events: none; }

.board-cell.is-win .cell-shape {
    stroke: var(--success);
    stroke-width: 3;
}

.board-cell.is-win .stone-body { stroke: var(--success); stroke-width: 3.5; }

.board-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: center;
    margin-top: 12px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.legend-item {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.legend-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    display: inline-block;
    border: 1px solid;
}

.legend-dot.black { background: var(--stone-black); border-color: var(--stone-black-stroke); }
.legend-dot.white { background: var(--stone-white); border-color: var(--stone-white-stroke); }
.legend-dot.win { background: var(--success-soft); border-color: var(--success); }

/* ---------------------------------------------------------------------------
   11. Spielseite (3-Spalten-Layout)
   --------------------------------------------------------------------------- */
.game-layout {
    display: grid;
    grid-template-columns: minmax(0, 250px) minmax(0, 1fr) minmax(0, 300px);
    gap: 16px;
    align-items: start;
}

.game-side, .game-board-col, .game-right {
    min-width: 0;
}

.game-board-col {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
}

.player-card {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 10px;
    padding: 12px;
    border-radius: var(--radius-m);
    border: 1px solid var(--border);
    background: var(--surface);
}

.game-panel.active-turn {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent);
}

.player-card.active-turn {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent), var(--shadow-1);
}

.player-card .player-name {
    font-weight: 700;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.player-card .player-rating {
    color: var(--text-muted);
    font-size: 0.82rem;
    font-family: var(--font-mono);
}

.clock {
    font-family: var(--font-mono);
    font-size: 1.35rem;
    font-weight: 700;
    padding: 6px 12px;
    border-radius: var(--radius-m);
    background: var(--surface-2);
    border: 1px solid var(--border);
    min-width: 84px;
    text-align: center;
    font-variant-numeric: tabular-nums;
}

.clock.is-running {
    background: var(--accent-soft);
    border-color: var(--accent);
    color: var(--accent);
}

.clock.is-low {
    background: var(--danger-soft);
    border-color: var(--danger);
    color: var(--danger);
}

[data-theme="light"] .clock.is-running { color: var(--accent); }

.status-banner {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: var(--radius-m);
    background: var(--surface);
    border: 1px solid var(--border-strong);
    font-weight: 600;
    font-size: 0.92rem;
    width: 100%;
    max-width: 720px;
}

.status-banner.status-win {
    background: var(--success-soft);
    border-color: var(--success);
    color: var(--success);
}

.status-banner.status-loss {
    background: var(--danger-soft);
    border-color: var(--danger);
    color: var(--danger);
}

.game-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    width: 100%;
    max-width: 720px;
}

.game-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-l);
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow: hidden;
}

.game-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    font-weight: 700;
    font-size: 0.92rem;
}

.game-panel-body {
    padding: 12px;
    overflow-y: auto;
    flex: 1;
}

.move-list {
    display: grid;
    grid-template-columns: auto 1fr 1fr;
    gap: 2px 8px;
    font-family: var(--font-mono);
    font-size: 0.88rem;
    align-items: center;
}

.move-list .move-no {
    color: var(--text-faint);
    text-align: right;
    padding: 3px 4px;
}

.move-btn {
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-s);
    color: var(--text);
    font: inherit;
    font-family: var(--font-mono);
    font-size: 0.88rem;
    text-align: center;
    padding: 3px 6px;
    cursor: pointer;
}

.move-btn:hover {
    background: var(--surface-2);
    border-color: var(--border);
}

.move-btn.is-current {
    background: var(--accent-soft);
    border-color: var(--accent);
    color: var(--accent);
}

.move-btn.is-black::before,
.move-btn.is-white::before {
    content: "";
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 6px;
    border: 1px solid var(--stone-black-stroke);
    vertical-align: -1px;
}

.move-btn.is-black::before { background: var(--stone-black); }
.move-btn.is-white::before { background: var(--stone-white); border-color: var(--stone-white-stroke); }

.empty-state {
    color: var(--text-muted);
    text-align: center;
    padding: 24px 12px;
    font-size: 0.92rem;
}

.empty-state .empty-icon { margin-bottom: 10px; opacity: 0.7; }

.chat-box {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.chat-log {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 260px;
    overflow-y: auto;
    min-height: 80px;
}

.chat-msg { font-size: 0.9rem; }

.chat-msg .chat-author {
    font-weight: 700;
    margin-right: 8px;
}

.chat-msg .chat-author.is-me { color: var(--accent); }
.chat-msg .chat-time {
    color: var(--text-faint);
    font-size: 0.75rem;
    margin-left: 6px;
}

.chat-msg .chat-text { color: var(--text); }

/* Globale hidden-Regel: display-Eigenschaften dürfen das hidden-Attribut
   niemals überstimmen (z. B. Zuschauer-Chat, Offline-Banner). */
[hidden] {
    display: none !important;
}

.chat-form {
    display: flex;
    gap: 8px;
}

.chat-form input { flex: 1; }

/* ---------------------------------------------------------------------------
   12. Dialoge & Modals
   --------------------------------------------------------------------------- */
dialog.modal {
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-l);
    background: var(--surface);
    color: var(--text);
    padding: 24px;
    max-width: min(92vw, 460px);
    width: 100%;
    box-shadow: var(--shadow-2);
}

dialog.modal::backdrop {
    background: rgba(5, 8, 16, 0.66);
}

[data-theme="light"] dialog.modal::backdrop {
    background: rgba(20, 26, 40, 0.4);
}

dialog.modal h2 {
    font-size: 1.25rem;
    margin-bottom: 10px;
}

.modal-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 20px;
}

dialog.modal form .field { margin-bottom: 14px; }

/* ---------------------------------------------------------------------------
   13. Lobby, Rätsel, Lernen, Profil, Konto
   --------------------------------------------------------------------------- */
.game-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.game-row {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-m);
    background: var(--surface);
    transition: border-color var(--transition-fast);
}

.game-row:hover { border-color: var(--border-strong); }

.game-row .players {
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.game-row .meta {
    color: var(--text-muted);
    font-size: 0.82rem;
}

.puzzle-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(260px, 340px);
    gap: 24px;
    align-items: start;
}

.learn-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 16px;
}

.learn-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-l);
    padding: 22px;
}

.learn-card .feature-icon { margin-bottom: 12px; }

.profile-head {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.profile-head .profile-names h1 { margin-bottom: 2px; }

.profile-head .profile-meta {
    color: var(--text-muted);
    display: flex;
    flex-wrap: wrap;
    gap: 6px 14px;
    align-items: center;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 12px;
}

.stat-box {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-m);
    padding: 14px;
    text-align: center;
}

.stat-box .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-mono);
}

.stat-box .stat-label {
    color: var(--text-muted);
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.account-layout {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
}

.account-nav {
    position: sticky;
    top: calc(var(--header-h) + 16px);
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.account-nav a {
    color: var(--text-muted);
    padding: 9px 12px;
    border-radius: var(--radius-m);
    font-weight: 500;
}

.account-nav a:hover {
    background: var(--surface-2);
    color: var(--text);
    text-decoration: none;
}

.account-nav a[aria-current="true"] {
    background: var(--accent-soft);
    color: var(--accent);
}

/* ---------------------------------------------------------------------------
   14. Tabellen (Admin)
   --------------------------------------------------------------------------- */
.table-wrap {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-l);
    background: var(--surface);
}

table.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.92rem;
}

.table th, .table td {
    text-align: left;
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

.table th {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    background: var(--surface-2);
    white-space: nowrap;
}

.table tr:last-child td { border-bottom: 0; }
.table tbody tr:hover { background: var(--surface-2); }

/* ---------------------------------------------------------------------------
   15. Legal-Seiten
   --------------------------------------------------------------------------- */
.legal-layout {
    max-width: 860px;
    margin-inline: auto;
}

.legal-meta {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 24px;
}

.prose h2 { margin-top: 2em; }
.prose h3 { margin-top: 1.6em; }
.prose ul, .prose ol { padding-left: 22px; }
.prose li + li { margin-top: 4px; }

.operator-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-m);
    padding: 16px;
    margin-bottom: 20px;
}

.operator-card address { font-style: normal; line-height: 1.6; }

/* ---------------------------------------------------------------------------
   16. Footer
   --------------------------------------------------------------------------- */
.site-footer {
    border-top: 1px solid var(--border);
    background: var(--surface);
    padding-block: 20px;
    flex-shrink: 0;
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 24px;
    align-items: center;
    justify-content: space-between;
    font-size: 0.88rem;
    color: var(--text-muted);
}

.footer-inner p { margin: 0; }

.footer-inner nav {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 14px;
}

.footer-inner nav a { color: var(--text-muted); }
.footer-inner nav a:hover { color: var(--text); }

/* ---------------------------------------------------------------------------
   17. Consent-Banner & Toasts
   --------------------------------------------------------------------------- */
.flash {
    padding: 12px 16px;
    border-radius: var(--radius-m);
    border: 1px solid var(--success);
    background: var(--success-soft);
    color: var(--success);
    margin-bottom: 16px;
    font-weight: 600;
}

.inline-form {
    display: inline-flex;
    margin: 0;
}

.icon-btn .icon-moon { display: none; }
[data-theme="light"] .icon-btn .icon-sun { display: none; }
[data-theme="light"] .icon-btn .icon-moon { display: block; }

.consent-body {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.consent-body strong { font-size: 1rem; }

.consent-banner {
    position: fixed;
    left: 16px;
    right: 16px;
    bottom: 16px;
    z-index: 150;
    max-width: 640px;
    margin-inline: auto;
    background: var(--surface-2);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-l);
    box-shadow: var(--shadow-2);
    padding: 18px 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px 16px;
    align-items: center;
}

.consent-banner[hidden] { display: none; }

.consent-banner .consent-body {
    flex: 1 1 280px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.consent-banner p {
    margin: 0;
    font-size: 0.92rem;
    color: var(--text-muted);
}

.consent-banner .consent-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.toast-region {
    position: fixed;
    top: calc(var(--header-h) + 12px);
    right: 16px;
    z-index: 160;
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: min(92vw, 380px);
}

.toast {
    background: var(--surface-2);
    border: 1px solid var(--border-strong);
    border-left: 4px solid var(--info);
    border-radius: var(--radius-m);
    padding: 12px 16px;
    box-shadow: var(--shadow-2);
    font-size: 0.92rem;
    animation: toast-in var(--transition-med);
}

.toast.toast-success { border-left-color: var(--success); }
.toast.toast-error { border-left-color: var(--danger); }
.toast.toast-warn { border-left-color: var(--accent); }

@keyframes toast-in {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---------------------------------------------------------------------------
   18. Spinner & Laden (hexagonale Form)
   --------------------------------------------------------------------------- */
.spinner {
    display: inline-block;
    width: 28px;
    height: 28px;
    border: 3px solid var(--border-strong);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
}

.spinner-mini {
    width: 18px;
    height: 18px;
    border-width: 2px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-block {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: var(--text-muted);
    padding: 32px;
}

.hex-spinner {
    width: 42px;
    height: 42px;
    color: var(--accent);
    animation: spin 1.1s linear infinite;
}

/* ---------------------------------------------------------------------------
   19. Utilities
   --------------------------------------------------------------------------- */
.error-page {
    max-width: 560px;
    margin: 48px auto;
    text-align: center;
}

.error-hex {
    width: 96px;
    color: var(--accent);
    margin-bottom: 18px;
}

.error-page p { color: var(--text-muted); }

.auth-wrap {
    max-width: 720px;
    margin-inline: auto;
}

.auth-wrap .auth-form {
    padding: 24px;
}

.account-grid {
    display: flex;
    flex-direction: column;
    gap: 16px;
    min-width: 0;
}

.danger-zone {
    border-color: var(--danger);
}

.danger-zone .card-title.text-danger { color: var(--danger); }

.hero-board svg {
    width: 100%;
    height: auto;
    color: var(--text-muted);
}

.hex-spinner svg {
    width: 100%;
    height: 100%;
}

.stats {
    display: grid;
    grid-template-columns: auto auto;
    gap: 4px 16px;
    margin: 0;
}

.stats dt { color: var(--text-muted); }
.stats dd { margin: 0; font-weight: 700; font-family: var(--font-mono); }

.player-label { font-weight: 700; }

.modal-actions { justify-content: flex-end; }

.text-muted { color: var(--text-muted); }
.text-accent { color: var(--accent); }
.text-center { text-align: center; }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-0 { margin-bottom: 0; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.flex-grow { flex: 1; }
.w-full { width: 100%; }

.offline-banner {
    background: var(--danger-soft);
    color: var(--danger);
    border-bottom: 1px solid var(--danger);
    text-align: center;
    padding: 8px;
    font-weight: 600;
    font-size: 0.9rem;
}

.offline-banner[hidden] { display: none; }

/* ---------------------------------------------------------------------------
   20. Responsive
   --------------------------------------------------------------------------- */
@media (max-width: 1024px) {
    .game-layout {
        grid-template-columns: minmax(0, 1fr);
    }

    .game-side, .game-right {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .game-side .game-panel,
    .game-right .game-panel {
        grid-column: 1 / -1;
    }

    .hero { grid-template-columns: 1fr; }
    .hero-visual { order: -1; }
    .play-layout { grid-template-columns: 1fr; }
    .preview-board-wrap { position: static; }
    .puzzle-layout { grid-template-columns: 1fr; }
    .account-layout { grid-template-columns: 1fr; }
    .account-nav { position: static; flex-direction: row; flex-wrap: wrap; }
}

@media (max-width: 760px) {
    .nav-toggle { display: inline-flex; }

    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 2px;
        background: var(--surface);
        border-bottom: 1px solid var(--border-strong);
        box-shadow: var(--shadow-2);
        padding: 10px;
    }

    .main-nav.is-open { display: flex; }

    .main-nav a {
        padding: 12px 14px;
        border-radius: var(--radius-m);
    }

    .form-grid.two-col { grid-template-columns: 1fr; }
    .game-side, .game-right { grid-template-columns: 1fr; }
    .game-side .game-panel, .game-right .game-panel { grid-column: auto; }

    .header-inner { gap: 8px; }
    .brand-name { display: none; }
    .user-pill .username-label { display: none; }
    .user-pill { max-width: none; }
}

/* ---------------------------------------------------------------------------
   21. Reduzierte Bewegung (WCAG 2.3.3)
   --------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .feature-card:hover { transform: none; }
    .btn:active { transform: none; }
}

/* ---------------------------------------------------------------------------
   22. Hoher Kontrast / erzwungene Farben
   --------------------------------------------------------------------------- */
@media (forced-colors: active) {
    .btn, .board-cell, .clock, .player-card {
        border: 1px solid ButtonText;
    }

    .btn-primary, .badge-accent {
        forced-color-adjust: none;
    }
}