/* ==========================================================
   DESIGN SYSTEM — Spielesammlung
   Alle Farben, Abstände, Schriften und Komponenten hier.
   Änderungen hier wirken sich auf alle Spiele gleichzeitig aus.
   ========================================================== */

/* ----------------------------------------------------------
   1. DESIGN TOKENS
   ---------------------------------------------------------- */

:root {
  /* --- Farben: Hintergrund & Oberflächen --- */
  --color-bg:          #07071a;
  --color-surface:     #0f0f28;
  --color-surface-2:   #16163a;
  --color-surface-3:   #1e1e4a;

  /* --- Farben: Rahmen --- */
  --color-border:      #2a2a5a;
  --color-border-2:    #1a1a3a;

  /* --- Farben: Text --- */
  --color-text:        #c8d8ff;
  --color-text-dim:    #5a6890;
  --color-text-head:   #eef2ff;
  --color-text-invert: #07071a;

  /* --- Farben: Akzent / Primär --- */
  --color-primary:     #00d4ff;
  --color-primary-dim: rgba(0, 212, 255, 0.12);
  --color-primary-glow:rgba(0, 212, 255, 0.40);

  /* --- Farben: Sekundär --- */
  --color-secondary:    #a371f7;
  --color-secondary-dim:rgba(163, 113, 247, 0.12);

  /* --- Farben: Status --- */
  --color-success:      #00e676;
  --color-success-dim:  rgba(0, 230, 118, 0.12);
  --color-warning:      #ffab00;
  --color-warning-dim:  rgba(255, 171, 0, 0.12);
  --color-danger:       #ff3d5a;
  --color-danger-dim:   rgba(255, 61, 90, 0.12);

  /* --- Farben: Tetrominos (geteilt von allen Spielen) --- */
  --color-piece-i:  #00f5ff;
  --color-piece-o:  #ffe600;
  --color-piece-t:  #bf00ff;
  --color-piece-s:  #00ff6a;
  --color-piece-z:  #ff2244;
  --color-piece-j:  #0066ff;
  --color-piece-l:  #ff8800;

  /* --- Facebook-Blau --- */
  --color-facebook: #1877f2;

  /* --- Typografie: Schriftfamilien --- */
  --font-display: 'Press Start 2P', 'Courier New', monospace;
  --font-body:    'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', monospace;

  /* --- Typografie: Größenskala --- */
  --text-xs:   10px;
  --text-sm:   12px;
  --text-md:   14px;
  --text-lg:   16px;
  --text-xl:   20px;
  --text-2xl:  28px;
  --text-3xl:  40px;

  /* --- Typografie: Gewichte --- */
  --weight-regular: 400;
  --weight-medium:  500;
  --weight-semibold:600;
  --weight-bold:    700;

  /* --- Abstände (4px Basis) --- */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-8:  32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;

  /* --- Rahmenradius --- */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --radius-pill: 9999px;

  /* --- Schatten / Leuchten --- */
  --shadow-sm:   0 1px 3px rgba(0,0,0,0.5);
  --shadow-md:   0 4px 16px rgba(0,0,0,0.6);
  --shadow-lg:   0 8px 32px rgba(0,0,0,0.7);
  --shadow-glow: 0 0 20px var(--color-primary-glow);
  --shadow-glow-sm: 0 0 10px var(--color-primary-glow);

  /* --- Übergänge --- */
  --transition-fast:   100ms ease;
  --transition-normal: 200ms ease;
  --transition-slow:   300ms ease;

  /* --- Z-Index-Skala --- */
  --z-base:    1;
  --z-overlay: 100;
  --z-modal:   200;
  --z-toast:   300;
}


/* ----------------------------------------------------------
   2. RESET & BASIS
   ---------------------------------------------------------- */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-md);
  font-weight: var(--weight-regular);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100dvh;
}

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

button, input, select {
  font: inherit;
}

[hidden] { display: none !important; }

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

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


/* ----------------------------------------------------------
   3. TYPOGRAFIE
   ---------------------------------------------------------- */

.text-display {
  font-family: var(--font-display);
  line-height: 1.4;
  text-wrap: balance;
}

.text-xs  { font-size: var(--text-xs); }
.text-sm  { font-size: var(--text-sm); }
.text-md  { font-size: var(--text-md); }
.text-lg  { font-size: var(--text-lg); }
.text-xl  { font-size: var(--text-xl); }
.text-2xl { font-size: var(--text-2xl); }
.text-3xl { font-size: var(--text-3xl); }

.text-head { color: var(--color-text-head); }
.text-dim  { color: var(--color-text-dim); }
.text-primary   { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-success   { color: var(--color-success); }
.text-danger    { color: var(--color-danger); }
.text-warning   { color: var(--color-warning); }

.text-glow {
  text-shadow: 0 0 12px var(--color-primary-glow),
               0 0 40px var(--color-primary-glow);
}

.tabular { font-variant-numeric: tabular-nums; }
.uppercase { text-transform: uppercase; letter-spacing: 0.08em; }
.label {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-dim);
}


/* ----------------------------------------------------------
   4. LAYOUT-HELFER
   ---------------------------------------------------------- */

.flex        { display: flex; }
.flex-col    { display: flex; flex-direction: column; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-1  { gap: var(--space-1); }
.gap-2  { gap: var(--space-2); }
.gap-3  { gap: var(--space-3); }
.gap-4  { gap: var(--space-4); }
.gap-6  { gap: var(--space-6); }
.gap-8  { gap: var(--space-8); }

.overflow-x { overflow-x: auto; }


/* ----------------------------------------------------------
   5. BUTTONS
   ---------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: var(--weight-regular);
  line-height: 1;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-5);
  cursor: pointer;
  transition:
    transform     var(--transition-fast),
    box-shadow    var(--transition-fast),
    background    var(--transition-fast),
    border-color  var(--transition-fast);
  user-select: none;
  white-space: nowrap;
}

.btn:hover  { transform: translateY(-1px); }
.btn:active { transform: translateY(0) scale(0.97); }
.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

/* Primär */
.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-invert);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow-sm);
}
.btn-primary:hover {
  box-shadow: var(--shadow-glow);
}

/* Sekundär */
.btn-secondary {
  background: var(--color-surface-2);
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* Ghost */
.btn-ghost {
  background: transparent;
  color: var(--color-text-dim);
  border-color: var(--color-border-2);
}
.btn-ghost:hover {
  color: var(--color-text);
  border-color: var(--color-border);
  background: var(--color-surface-2);
}

/* Gefahr */
.btn-danger {
  background: var(--color-danger-dim);
  color: var(--color-danger);
  border-color: var(--color-danger);
}
.btn-danger:hover {
  background: var(--color-danger);
  color: #fff;
}

/* Facebook — offizielle Optik */
.btn-facebook {
  background: #1877F2;
  color: #fff;
  border-color: #1877F2;
  border-radius: 6px;
  font-family: 'Inter', system-ui, -apple-system, Arial, sans-serif;
  font-size: 15px;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
  padding: 8px 16px;
  height: auto;
  gap: 8px;
}
.btn-facebook:hover {
  background: #1565d8;
  border-color: #1565d8;
  box-shadow: 0 2px 8px rgba(24,119,242,0.4);
}
.btn-facebook svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* Größen */
.btn-sm {
  font-size: 8px;
  padding: var(--space-2) var(--space-3);
}
.btn-lg {
  font-size: var(--text-sm);
  padding: var(--space-4) var(--space-8);
}


/* ----------------------------------------------------------
   6. BADGES
   ---------------------------------------------------------- */

.badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-display);
  font-size: 8px;
  line-height: 1;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  border: 1px solid;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.badge-primary {
  background: var(--color-primary-dim);
  color: var(--color-primary);
  border-color: rgba(0,212,255,0.3);
}
.badge-success {
  background: var(--color-success-dim);
  color: var(--color-success);
  border-color: rgba(0,230,118,0.3);
}
.badge-warning {
  background: var(--color-warning-dim);
  color: var(--color-warning);
  border-color: rgba(255,171,0,0.3);
}
.badge-secondary {
  background: var(--color-secondary-dim);
  color: var(--color-secondary);
  border-color: rgba(163,113,247,0.3);
}
.badge-danger {
  background: var(--color-danger-dim);
  color: var(--color-danger);
  border-color: rgba(255,61,90,0.3);
}


/* ----------------------------------------------------------
   7. CARDS / PANELS
   ---------------------------------------------------------- */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-2);
  border-radius: var(--radius-md);
  padding: var(--space-4);
}

.card-header {
  padding-bottom: var(--space-3);
  margin-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border-2);
}

.panel {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
}

.panel-label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-dim);
  margin-bottom: var(--space-2);
  font-family: var(--font-display);
  line-height: 1;
}

.panel-value {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  color: var(--color-primary);
  text-shadow: var(--shadow-glow-sm);
  font-variant-numeric: tabular-nums;
  word-break: break-all;
  line-height: 1.4;
}


/* ----------------------------------------------------------
   8. GAME OVERLAY (Pause / Game Over / Start)
   ---------------------------------------------------------- */

.game-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-5);
  background: rgba(7, 7, 26, 0.90);
  backdrop-filter: blur(3px);
  z-index: var(--z-overlay);
  padding: var(--space-6);
  text-align: center;
}

.game-overlay-title {
  font-family: var(--font-display);
  font-size: clamp(16px, 4vw, 24px);
  color: var(--color-primary);
  text-shadow: var(--shadow-glow),
               0 0 60px var(--color-primary-glow);
  line-height: 1.5;
}

.game-overlay-sub {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--color-text-dim);
  line-height: 2.2;
}

.game-overlay-stats {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
  justify-content: center;
}

.overlay-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
}

.overlay-stat-label {
  font-family: var(--font-display);
  font-size: 8px;
  color: var(--color-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.overlay-stat-value {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-text-head);
  font-variant-numeric: tabular-nums;
}


/* ----------------------------------------------------------
   9. MODAL
   ---------------------------------------------------------- */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(7, 7, 26, 0.85);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  padding: var(--space-4);
}

.modal {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.modal-title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  color: var(--color-text-head);
}

.modal-actions {
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
  flex-wrap: wrap;
}


/* ----------------------------------------------------------
   10. LEADERBOARD
   ---------------------------------------------------------- */

.leaderboard {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-display);
  font-size: var(--text-xs);
}

.leaderboard th {
  text-align: left;
  color: var(--color-text-dim);
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--color-border-2);
  font-weight: var(--weight-regular);
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.leaderboard td {
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--color-border-2);
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
}

.leaderboard tr:last-child td {
  border-bottom: none;
}

.leaderboard tr.is-me td {
  color: var(--color-primary);
  background: var(--color-primary-dim);
}

.leaderboard .rank-1 td:first-child { color: var(--color-warning); }
.leaderboard .rank-2 td:first-child { color: var(--color-text); }
.leaderboard .rank-3 td:first-child { color: var(--color-piece-l); }


/* ----------------------------------------------------------
   11. SPRACH-UMSCHALTER
   ---------------------------------------------------------- */

.lang-switcher {
  display: flex;
  gap: var(--space-1);
  align-items: center;
}

.lang-btn {
  font-family: var(--font-display);
  font-size: 8px;
  color: var(--color-text-dim);
  background: transparent;
  border: 1px solid var(--color-border-2);
  border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-2);
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
  line-height: 1.6;
}

.lang-btn:hover,
.lang-btn.is-active {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-dim);
}

.sound-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--color-border-2);
  border-radius: var(--radius-sm);
  color: var(--color-text-dim);
  cursor: pointer;
  padding: 5px 8px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}
.sound-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.sound-btn[aria-pressed="true"] {
  color: var(--color-text-dim);
  opacity: 0.5;
}

.premium-badge-btn {
  font-family: var(--font-display);
  font-size: 8px;
  color: var(--color-text-dim);
  background: transparent;
  border: 1px solid var(--color-border-2);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  cursor: pointer;
  letter-spacing: 0.06em;
  transition: all var(--transition-fast);
}
.premium-badge-btn:hover {
  border-color: #ffd700;
  color: #ffd700;
}
.premium-badge-btn.is-premium {
  border-color: #ffd700;
  color: #ffd700;
  background: rgba(255,215,0,0.08);
}


/* ----------------------------------------------------------
   12. SCORE-ANZEIGE (groß, für Game-Over etc.)
   ---------------------------------------------------------- */

.score-display {
  font-family: var(--font-display);
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
  text-shadow: var(--shadow-glow);
  line-height: 1;
}

.score-display.size-lg { font-size: var(--text-2xl); }
.score-display.size-xl { font-size: var(--text-3xl); }


/* ----------------------------------------------------------
   13. TOAST-NACHRICHTEN
   ---------------------------------------------------------- */

.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  z-index: var(--z-toast);
  pointer-events: none;
}

.toast {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-head);
  background: var(--color-surface-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  box-shadow: var(--shadow-md);
  pointer-events: auto;
  animation: toast-in var(--transition-normal) ease;
}

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

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


/* ----------------------------------------------------------
   14. SCANLINES-EFFEKT (optional, für Spielbildschirme)
   ---------------------------------------------------------- */

.scanlines::after {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 3px,
    rgba(0, 0, 0, 0.07) 3px,
    rgba(0, 0, 0, 0.07) 4px
  );
  pointer-events: none;
  z-index: var(--z-base);
}


/* ----------------------------------------------------------
   15. NÜTZLICHE UTILITIES
   ---------------------------------------------------------- */

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

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ----------------------------------------------------------
   AUTH WIDGET
   ---------------------------------------------------------- */
.auth-widget { display: flex; align-items: center; }

.auth-btn {
  display: flex; align-items: center; gap: 7px;
  background: #1877F2; color: #fff;
  border: none; border-radius: 6px;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 13px; font-weight: 600;
  padding: 6px 12px; cursor: pointer;
  transition: background 0.15s;
}
.auth-btn:hover { background: #1565d8; }
.auth-fb-icon { width: 16px; height: 16px; flex-shrink: 0; }

.auth-user {
  display: flex; align-items: center; gap: 8px;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 13px; color: var(--color-text);
}
.auth-avatar {
  width: 28px; height: 28px; border-radius: 50%;
  object-fit: cover; border: 1px solid var(--color-border);
}
.auth-name { max-width: 120px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.auth-logout {
  background: none; border: none; color: var(--color-text-dim);
  cursor: pointer; font-size: 12px; padding: 2px 4px;
  transition: color 0.15s;
}
.auth-logout:hover { color: var(--color-text); }