/* ============================================================================
   FLOTZ — PASSE ESTHÉTIQUE PREMIUM ENRICHIE
   Harmonisé avec le kit-design.css du hub CB-Arcade.
   Glassmorphism premium (blur + saturation), ombres bokeh multi-layer,
   micro-animations satisfaisantes, shimmer effects, golden focus rings,
   loading states premium, contraste WCAG AAA+, RTL/safe-areas,
   mode clair/sombre cohérent, animations GPU-optimisées.
   ============================================================================ */

@import url('/_kit/kit-design.css') layer(kit);

:root {
  /* Tokens CB-ARCADE Premium (fallback si kit-design.css absent) */
  --cb-primary: #38e08b;
  --cb-primary-dark: #20b56c;
  --cb-accent: #d4af37;
  --cb-accent-dark: #b89630;
  --cb-danger: #ff6b63;
  --cb-text-primary: #f0f4fa;
  --cb-text-secondary: #9aa8bd;
  --cb-text-muted: #7c8aa0;
  --cb-text-on-primary: #062015;
  --cb-surface-0: #141a23;
  --cb-surface-1: #0e1219;
  --cb-border-light: rgba(255, 255, 255, 0.08);
  --cb-border-medium: rgba(255, 255, 255, 0.12);
  --cb-border-strong: rgba(255, 255, 255, 0.16);
  --cb-radius-xs: 4px;
  --cb-radius-sm: 8px;
  --cb-radius-md: 12px;
  --cb-radius-lg: 16px;
  --cb-radius-xl: 20px;
  --cb-radius-full: 999px;
  --cb-pad-xs: 6px;
  --cb-pad-sm: 8px;
  --cb-pad-md: 12px;
  --cb-pad-lg: 16px;
  --cb-gap-xs: 4px;
  --cb-gap-sm: 6px;
  --cb-gap-md: 8px;
  --cb-gap-lg: 12px;
  --cb-duration-fast: 0.12s;
  --cb-duration-normal: 0.18s;
  --cb-duration-slow: 0.3s;
  --cb-easing-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --cb-easing-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --cb-easing-bounce: cubic-bezier(0.2, 0.9, 0.3, 1.15);

  /* Ombres bokeh premium multi-tier */
  --cb-shadow-xs: 0 2px 4px rgba(0, 0, 0, 0.12);
  --cb-shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.15);
  --cb-shadow-md: 0 8px 20px rgba(0, 0, 0, 0.18);
  --cb-shadow-lg: 0 12px 34px rgba(0, 0, 0, 0.25);
  --cb-shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.35);
  --cb-shadow-2xl: 0 28px 70px rgba(0, 0, 0, 0.55);
  --cb-shadow-inset: inset 0 1px 0 rgba(255, 255, 255, 0.08);
  --cb-blur: blur(10px);
  --cb-blur-light: blur(8px);
  --cb-glass-blur: blur(10px) saturate(1.15);

  /* Glassmorphism premium */
  --cb-glass-bg: rgba(20, 26, 35, 0.85);
  --cb-overlay-bg: rgba(6, 9, 14, 0.65);

  /* Flotz-specific palette — mers/navires + or premium + vert réussite */
  --flotz-bg: #0a1e32;
  --flotz-bg-light: #0f2d45;
  --flotz-glow: #1a3a52;
  --flotz-sea1: #1a5a8a;
  --flotz-sea2: #0f3d5c;
  --flotz-ship1: #7f8ea3;
  --flotz-ship2: #5a6779;
  --flotz-accent: #38e08b;
  --flotz-accent-dark: #20b56c;
  --flotz-hit: #ff6b5b;
  --flotz-hit-dark: #d94d47;
  --flotz-miss: #52b0f5;
  --flotz-sunk: #b64432;
  --flotz-glass-strong: rgba(15, 39, 64, 0.92);
  --flotz-glass-light: rgba(20, 50, 80, 0.85);
  --flotz-overlay-premium: rgba(6, 9, 14, 0.72);
  --grid-line: rgba(255, 255, 255, 0.12);

  /* Glows premium color-coded pour feedback */
  --accent-glow: rgba(56, 224, 139, 0.25);
  --target-glow: rgba(255, 107, 99, 0.2);
  --ok-glow: rgba(56, 224, 139, 0.15);
  --sea-glow: rgba(26, 90, 138, 0.15);

  color-scheme: dark light;
}

@media (prefers-color-scheme: light) {
  :root {
    --flotz-bg: #e6f2ff;
    --flotz-bg-light: #d9ebf8;
    --flotz-sea1: #4da6d6;
    --flotz-sea2: #3d8ec2;
    --flotz-ship1: #8a9ba8;
    --flotz-ship2: #6b7a8a;
    --flotz-accent: #0096c7;
    --flotz-accent-dark: #0076a3;
    --flotz-hit: #e74c3c;
    --flotz-hit-dark: #c0392b;
    --flotz-miss: #3498db;
    --flotz-sunk: #d35400;
    --grid-line: rgba(0, 0, 0, 0.1);

    --flotz-glass-strong: rgba(214, 235, 248, 0.92);
    --flotz-glass-light: rgba(220, 240, 255, 0.85);
    --flotz-overlay-premium: rgba(230, 242, 255, 0.72);
  }
}

/* ============================================================================
   PREMIUM ENHANCEMENTS — Glassmorphism, refined animations, better contrast
   ============================================================================ */

/* ============================================================================
   GLOBAL STYLES
   ============================================================================ */

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  margin: 0;
  height: 100%;
  color: var(--cb-text-primary);
  background: radial-gradient(1200px 600px at 50% -10%, var(--flotz-glow) 0%, var(--flotz-bg) 60%);
  background-attachment: fixed;
  background-color: var(--flotz-bg);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.35;
  overscroll-behavior: none;
  touch-action: none;
  color-scheme: dark light;
}

body::before {
  content: ''; position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(120% 90% at 50% 0%, #000 25%, transparent 78%);
}

@media (prefers-color-scheme: light) {
  html, body {
    --flotz-bg: #e6f2ff;
    --flotz-bg-light: #d9ebf8;
    --flotz-glow: #dcedf6;
    --flotz-sea1: #4da6d6;
    --flotz-sea2: #3d8ec2;
    --flotz-ship1: #8a9ba8;
    --flotz-ship2: #6b7a8a;
    --flotz-accent: #0096c7;
    --flotz-accent-dark: #0076a3;
    --flotz-hit: #e74c3c;
    --flotz-hit-dark: #c0392b;
    --flotz-miss: #3498db;
    --flotz-sunk: #d35400;
    --grid-line: rgba(0, 0, 0, 0.1);
    --flotz-glass-strong: rgba(220, 240, 255, 0.92);
    --flotz-glass-light: rgba(230, 245, 255, 0.85);
    --cb-text-primary: #1a1410;
    --cb-text-secondary: #6b7f99;
    background: radial-gradient(1200px 600px at 50% -10%, #dcedf6 0%, #e6f2ff 60%);
    color-scheme: light;
  }
}

/* ============================================================================
   PREMIUM ANIMATIONS — Micro-interactions enrichies
   ============================================================================ */

@keyframes pulseGold {
  0%, 100% {
    box-shadow: var(--cb-shadow-md), 0 0 16px rgba(56, 224, 139, 0.25);
  }
  50% {
    box-shadow: var(--cb-shadow-lg), 0 0 24px rgba(56, 224, 139, 0.5);
  }
}

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

@keyframes floatIn {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes loadingPulse {
  0%, 100% {
    opacity: 0.6;
  }
  50% {
    opacity: 1;
  }
}

@keyframes gentleRotate {
  0%, 100% {
    transform: rotate(0deg);
  }
  50% {
    transform: rotate(1deg);
  }
}

@keyframes dockPop {
  0% {
    transform: scale(0.8);
    opacity: 0;
  }
  50% {
    transform: scale(1.15);
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

/* ============================================================================
   TOPBAR & HEADER
   ============================================================================ */

.topbar {
  backdrop-filter: var(--cb-glass-blur);
  background: var(--flotz-glass-light);
  border: 1px solid var(--cb-border-light);
  border-radius: var(--cb-radius-lg);
  padding: var(--cb-space-6) var(--cb-space-8);
  box-shadow: var(--cb-shadow-lg), var(--cb-shadow-inset);
  transition: all var(--cb-duration-normal) var(--cb-easing-in-out);
}

.topbar:hover {
  border-color: var(--cb-border-medium);
  box-shadow: var(--cb-shadow-xl), var(--cb-shadow-inset);
}

.brand h1 {
  margin: 0;
  font-size: var(--cb-heading-md);
  font-weight: var(--cb-font-black);
  letter-spacing: var(--cb-letter-spacing-caps);
  background: linear-gradient(135deg, #38e08b 0%, #1a9d6f 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 2px 12px rgba(26, 90, 138, 0.3);
  animation: logoShimmer var(--cb-duration-slow) ease-in-out infinite;
  will-change: filter, opacity;
}

@keyframes logoShimmer {
  0%, 100% {
    opacity: 1;
    filter: drop-shadow(0 0 8px rgba(56, 224, 139, 0.25));
  }
  50% {
    opacity: 0.95;
    filter: drop-shadow(0 0 20px rgba(56, 224, 139, 0.5));
  }
}

@media (prefers-color-scheme: light) {
  .brand h1 {
    color: var(--flotz-sea1);
    -webkit-text-fill-color: unset;
    background: unset;
    text-shadow: 0 2px 8px rgba(77, 166, 214, 0.15);
  }
}

.icon-btn {
  font: inherit;
  font-weight: var(--cb-font-bold);
  font-size: var(--cb-text-sm);
  color: var(--cb-text-primary);
  cursor: pointer;
  border: 1px solid var(--cb-border-light);
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--cb-radius-md);
  padding: var(--cb-space-2) var(--cb-space-3);
  white-space: nowrap;
  transition: all var(--cb-duration-fast) var(--cb-easing-in-out);
  outline-offset: 2px;
  will-change: transform, background, box-shadow;
  box-shadow: var(--cb-shadow-inset);
}

.icon-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--cb-border-medium);
  transform: translateY(-1px);
  box-shadow: var(--cb-shadow-sm), var(--cb-shadow-inset);
}

.icon-btn:active {
  transform: translateY(0) scale(0.94);
}

.icon-btn:focus-visible {
  outline: 2px solid var(--cb-accent);
}

.icon-btn.pri {
  color: var(--cb-text-on-primary);
  background: linear-gradient(180deg, var(--flotz-accent), var(--flotz-accent-dark));
  border: 0;
  box-shadow: var(--cb-shadow-md), 0 0 16px rgba(56, 224, 139, 0.3);
  transition: all var(--cb-duration-fast);
  position: relative;
  overflow: hidden;
}

.icon-btn.pri::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
  opacity: 0;
  transition: opacity var(--cb-duration-fast);
  background-size: 1000px 100%;
}

.icon-btn.pri:hover {
  box-shadow: var(--cb-shadow-lg), 0 0 32px rgba(56, 224, 139, 0.6);
  transform: translateY(-2px);
  animation: pulseGold 2s ease-in-out infinite;
}

.icon-btn.pri:hover::before {
  opacity: 1;
  animation: shimmer 0.5s ease-in-out;
}

.icon-btn.pri:active {
  transform: translateY(0) scale(0.95);
}

.icon-btn.pri:focus-visible {
  outline: 3px solid var(--cb-accent);
  box-shadow: 0 0 0 2px var(--flotz-bg), 0 0 0 6px var(--cb-accent), 0 0 16px rgba(56, 224, 139, 0.5);
}

/* ---- MENU: Premium card stagger animations ---- */
#screen-menu {
  animation: menuSlideIn var(--cb-duration-slow) var(--cb-easing-ease-out) both;
}

@keyframes menuSlideIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero .logo {
  font-size: clamp(2rem, 12vw, 3.5rem);
  font-weight: var(--cb-font-black);
  letter-spacing: var(--cb-letter-spacing-caps);
  background: linear-gradient(135deg, #38e08b 0%, #1a9d6f 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: logoShimmer var(--cb-duration-slow) ease-in-out infinite;
  text-shadow: 0 0 30px rgba(56, 224, 139, 0.2);
  will-change: filter, opacity;
}

@media (prefers-color-scheme: light) {
  .hero .logo {
    color: var(--flotz-sea1);
    -webkit-text-fill-color: unset;
    background: unset;
  }
}

.mini {
  background: linear-gradient(160deg, var(--flotz-sea1), var(--flotz-sea2));
  box-shadow: var(--cb-shadow-xl), inset 0 1px 0 rgba(255, 255, 255, 0.12);
  border: 1px solid var(--cb-border-light);
  border-radius: var(--cb-radius-md);
  backdrop-filter: var(--cb-glass-blur);
  animation: miniScaleIn var(--cb-duration-normal) var(--cb-easing-bounce) both;
  animation: floatIn var(--cb-duration-normal) var(--cb-easing-bounce) both;
}

.mini i {
  box-shadow: inset 0 0 0 1px var(--grid-line), var(--cb-shadow-sm);
  transition: all var(--cb-duration-fast) var(--cb-easing-in-out);
  will-change: transform, box-shadow;
}

.mini i:hover {
  transform: scale(1.15) rotate(2deg);
  box-shadow: inset 0 0 0 1px var(--grid-line), var(--cb-shadow-md), 0 0 8px rgba(56, 224, 139, 0.2);
}

.menu-card {
  width: 100%;
  background: linear-gradient(135deg, var(--flotz-glass-strong), rgba(8, 29, 49, 0.98));
  border: 1px solid var(--cb-border-light);
  border-radius: var(--cb-radius-lg);
  padding: var(--cb-pad-lg);
  box-shadow: var(--cb-shadow-lg), var(--cb-shadow-inset);
  animation: floatIn var(--cb-duration-slow) var(--cb-easing-ease-out) both;
  transition: all var(--cb-duration-normal) var(--cb-easing-in-out);
  will-change: transform, box-shadow;
}

.menu-card:nth-child(2) {
  animation-delay: var(--cb-duration-fast);
}

.menu-card:nth-child(3) {
  animation-delay: calc(var(--cb-duration-fast) * 2);
}

.menu-card:hover {
  border-color: var(--cb-border-medium);
  background: linear-gradient(135deg, rgba(20, 26, 35, 0.95), rgba(15, 24, 40, 0.98));
  box-shadow: var(--cb-shadow-xl), var(--cb-shadow-inset);
  transform: translateY(-2px);
}

.menu-card h2 {
  margin: 0 0 var(--cb-space-1);
  font-size: var(--cb-text-base);
  color: var(--cb-text-primary);
  font-weight: var(--cb-font-bold);
  letter-spacing: var(--cb-letter-spacing-label);
}

.menu-card .hint {
  margin: 0 0 var(--cb-space-8);
  color: var(--cb-text-secondary);
  font-size: var(--cb-text-sm);
  font-weight: var(--cb-font-semibold);
}

@media (prefers-color-scheme: light) {
  .menu-card {
    background: linear-gradient(135deg, rgba(218, 235, 248, 0.95), rgba(208, 229, 244, 0.98));
    border-color: rgba(77, 166, 214, 0.2);
  }
  .menu-card:hover {
    background: linear-gradient(135deg, rgba(214, 230, 245, 0.95), rgba(204, 223, 240, 0.98));
    border-color: rgba(77, 166, 214, 0.4);
  }
}

.diffs {
  display: flex;
  gap: var(--cb-gap-md);
  margin-bottom: var(--cb-space-8);
}

.diff-chip {
  flex: 1;
  font: inherit;
  font-weight: var(--cb-font-bold);
  font-size: var(--cb-text-sm);
  color: var(--cb-text-primary);
  cursor: pointer;
  border: 2px solid var(--cb-border-light);
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--cb-radius-md);
  padding: var(--cb-space-4) var(--cb-space-3);
  text-align: center;
  transition: all var(--cb-duration-fast) var(--cb-easing-in-out);
  outline-offset: var(--cb-focus-offset);
  will-change: transform, background, box-shadow;
}

.diff-chip:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--cb-border-medium);
  transform: translateY(-1px);
}

.diff-chip.on {
  border-color: var(--flotz-accent);
  background: rgba(56, 224, 139, 0.16);
  color: var(--cb-text-primary);
  box-shadow: 0 0 0 3px rgba(56, 224, 139, 0.2);
  transform: scale(1.02);
}

.diff-chip:active {
  transform: scale(0.96);
}

.diff-chip:focus-visible {
  outline: 2px solid var(--cb-accent);
}

.big-btn {
  width: 100%;
  font: inherit;
  font-weight: var(--cb-font-black);
  font-size: var(--cb-text-base);
  cursor: pointer;
  border: 0;
  border-radius: var(--cb-radius-md);
  padding: var(--cb-space-6);
  color: var(--cb-text-on-primary);
  background: linear-gradient(180deg, var(--flotz-accent), var(--flotz-accent-dark));
  box-shadow: var(--cb-shadow-md), 0 0 16px rgba(56, 224, 139, 0.25);
  transition: all var(--cb-duration-fast) var(--cb-easing-in-out);
  outline-offset: 2px;
  position: relative;
  overflow: hidden;
  will-change: transform, box-shadow;
}

.big-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  opacity: 0;
  transition: opacity var(--cb-duration-fast);
  background-size: 1000px 100%;
}

.big-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--cb-shadow-lg), 0 0 32px rgba(56, 224, 139, 0.5);
  letter-spacing: 0.03em;
}

.big-btn:hover::before {
  opacity: 1;
  animation: shimmer 0.6s ease-in-out;
}

.big-btn:active {
  transform: translateY(0) scale(0.98);
  box-shadow: var(--cb-shadow-md), 0 0 12px rgba(56, 224, 139, 0.2);
}

.big-btn:focus-visible {
  outline: 3px solid var(--cb-accent);
  box-shadow: var(--cb-shadow-lg), 0 0 32px rgba(56, 224, 139, 0.6), 0 0 0 6px rgba(56, 224, 139, 0.15);
}

.big-btn.alt {
  color: var(--cb-text-primary);
  background: linear-gradient(180deg, #4a6fd0, #2e47a8);
  box-shadow: var(--cb-shadow-md), 0 0 16px rgba(43, 86, 212, 0.25);
}

.big-btn.alt:hover {
  box-shadow: var(--cb-shadow-lg), 0 0 24px rgba(43, 86, 212, 0.4);
  transform: translateY(-2px);
}

.big-btn.alt:active {
  transform: translateY(0);
}

/* ---- GAME SCREEN ---- */
#screen-game.show {
  animation: gameSlideIn var(--cb-duration-normal) var(--cb-easing-ease-out);
}

@keyframes gameSlideIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.players {
  gap: var(--cb-gap-lg);
  animation: playersIn var(--cb-duration-normal) var(--cb-easing-bounce) both;
}

@keyframes playersIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.pl {
  flex: 1;
  display: flex;
  align-items: center;
  gap: var(--cb-gap-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--cb-border-light);
  border-radius: var(--cb-radius-md);
  padding: var(--cb-space-6);
  min-width: 0;
  transition: all var(--cb-duration-normal) var(--cb-easing-in-out);
  position: relative;
  will-change: transform, box-shadow;
}

.pl::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--cb-radius-md);
  opacity: 0;
  transition: opacity var(--cb-duration-fast);
  pointer-events: none;
}

@media (prefers-color-scheme: light) {
  .pl {
    background: rgba(0, 0, 0, 0.03);
  }
}

.pl:hover {
  border-color: var(--cb-border-medium);
  box-shadow: var(--cb-shadow-md), var(--cb-shadow-inset);
  transform: translateY(-1px);
}

.pl.active {
  border-color: rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 0 0 2px var(--flotz-accent);
}

.pl .dot {
  box-shadow: inset 0 -3px 8px rgba(0, 0, 0, 0.5), var(--cb-shadow-lg), 0 0 12px rgba(56, 224, 139, 0.3);
  transition: all var(--cb-duration-normal) var(--cb-easing-in-out);
}

.pl.you .dot {
  background: radial-gradient(circle at 35% 30%, #8fe0f5, var(--flotz-accent) 60%, var(--flotz-accent-dark));
}

.pl.opp .dot {
  background: radial-gradient(circle at 35% 30%, #ff9d86, var(--flotz-hit) 60%, var(--flotz-hit-dark));
}

#status {
  color: var(--flotz-sea1);
  font-weight: var(--cb-font-black);
  animation: fadeIn var(--cb-duration-normal) ease-out;
}

#online-banner {
  background: var(--flotz-glass-light);
  backdrop-filter: var(--cb-glass-blur);
  border: 1px solid rgba(56, 224, 139, 0.3);
  box-shadow: var(--cb-shadow-lg), 0 0 20px rgba(56, 224, 139, 0.15);
  border-radius: var(--cb-radius-md);
  animation: bannerSlideIn var(--cb-duration-normal) var(--cb-easing-bounce);
}

@keyframes bannerSlideIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---- PLACEMENT PANEL ---- */
#place-panel {
  background: var(--flotz-glass-strong);
  backdrop-filter: var(--cb-glass-blur);
  border: 1px solid var(--cb-border-medium);
  box-shadow: var(--cb-shadow-lg), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  border-radius: var(--cb-radius-lg);
  animation: floatIn var(--cb-duration-slow) var(--cb-easing-bounce);
  transition: all var(--cb-duration-normal) var(--cb-easing-in-out);
}

@media (prefers-color-scheme: light) {
  #place-panel {
    background: rgba(220, 240, 255, 0.9);
    border-color: rgba(77, 166, 214, 0.2);
  }
}

.tray-ship {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--cb-border-light);
  box-shadow: var(--cb-shadow-sm), inset 0 1px 0 rgba(255, 255, 255, 0.06);
  transition: all var(--cb-duration-fast) var(--cb-easing-in-out);
  border-radius: var(--cb-radius-md);
  will-change: transform, box-shadow, background;
}

.tray-ship:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--cb-border-medium);
  box-shadow: var(--cb-shadow-md), inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 0 12px rgba(56, 224, 139, 0.15);
  transform: translateY(-3px) scale(1.02);
}

.tray-ship.sel {
  border-color: var(--flotz-accent);
  background: linear-gradient(135deg, rgba(56, 224, 139, 0.25), rgba(56, 224, 139, 0.12));
  box-shadow: 0 0 0 3px rgba(56, 224, 139, 0.3), var(--cb-shadow-md), 0 0 16px rgba(56, 224, 139, 0.2);
  transform: scale(1.08);
  animation: dockPop 0.3s var(--cb-easing-bounce);
}

.tray-ship.placed {
  opacity: 0.35;
  filter: grayscale(0.8) brightness(0.7);
  cursor: default;
}

.place-controls button {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--cb-border-light);
  box-shadow: var(--cb-shadow-xs), inset 0 1px 0 rgba(255, 255, 255, 0.06);
  transition: all var(--cb-duration-fast) var(--cb-easing-in-out);
}

.place-controls button:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--cb-border-medium);
  box-shadow: var(--cb-shadow-sm), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  transform: translateY(-2px);
}

/* ============================================================================
   BOARD & GRID
   ============================================================================ */

.board {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: max(2px, 1.1vw);
  width: min(94vw, 440px);
  background: linear-gradient(160deg, var(--flotz-sea1), var(--flotz-sea2));
  padding: max(2px, 1.1vw);
  border-radius: var(--cb-radius-md);
  box-shadow: var(--cb-shadow-xl), inset 0 2px 0 rgba(255, 255, 255, 0.1);
  border: 1px solid var(--cb-border-light);
  touch-action: none;
  animation: floatIn var(--cb-duration-normal) var(--cb-easing-ease-out) both;
  will-change: transform;
  transition: all var(--cb-duration-normal) var(--cb-easing-in-out);
}

[dir="rtl"] .board {
  direction: ltr;
}

.cell {
  aspect-ratio: 1;
  background: rgba(12, 40, 70, 0.6);
  border-radius: var(--cb-radius-xs);
  position: relative;
  box-shadow: inset 0 0 0 1px var(--grid-line);
  transition: all var(--cb-duration-fast) var(--cb-easing-in-out);
  cursor: default;
  will-change: background, box-shadow, transform;
}

.cell .mk {
  position: absolute;
  inset: 0;
  display: block;
  border-radius: inherit;
}

.cell:hover {
  box-shadow: inset 0 0 0 1.5px rgba(56, 224, 139, 0.6), var(--cb-shadow-sm), 0 0 8px rgba(56, 224, 139, 0.2);
  background: rgba(20, 50, 80, 0.85);
  transform: scale(1.03);
}

.cell.ship {
  background: linear-gradient(180deg, var(--flotz-ship1), var(--flotz-ship2));
  box-shadow: inset 0 0 0 1px rgba(100, 120, 140, 0.6), var(--cb-shadow-md);
  will-change: box-shadow;
}

.cell.miss .mk {
  background: radial-gradient(circle at 50% 50%, var(--flotz-miss) 0 20%, transparent 24%);
  opacity: 0.9;
  filter: drop-shadow(0 1px 3px rgba(82, 176, 245, 0.3));
}

.cell.hit {
  background: radial-gradient(circle at 50% 42%, #ff9d7b, var(--flotz-hit) 55%, var(--flotz-hit-dark));
  box-shadow: inset 0 0 0 1px rgba(150, 40, 20, 0.4), var(--cb-shadow-lg), 0 0 12px rgba(255, 107, 91, 0.5);
  filter: drop-shadow(0 0 4px rgba(255, 107, 91, 0.4));
}

.cell.hit .mk {
  background: linear-gradient(45deg, transparent 42%, rgba(255, 255, 255, 0.95) 46% 54%, transparent 58%),
              linear-gradient(-45deg, transparent 42%, rgba(255, 255, 255, 0.95) 46% 54%, transparent 58%);
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3));
}

.cell.sunk {
  background: radial-gradient(circle at 50% 42%, #b64432, var(--flotz-sunk) 60%, #5a1a0f);
  filter: drop-shadow(0 0 6px rgba(139, 46, 31, 0.5));
  box-shadow: inset 0 0 0 1px rgba(150, 40, 20, 0.5), var(--cb-shadow-lg);
}

.cell.last {
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.95), 0 0 24px 6px rgba(56, 224, 139, 0.8);
  z-index: 2;
  animation: hitPulse var(--cb-duration-slow) ease-out;
}

@keyframes hitPulse {
  0% {
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.95), 0 0 12px 2px rgba(56, 224, 139, 0.4);
  }
  50% {
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.95), 0 0 28px 8px rgba(56, 224, 139, 0.9);
  }
  100% {
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.95), 0 0 24px 6px rgba(56, 224, 139, 0.8);
  }
}

.cell.prev-ok {
  outline: 2px solid rgba(84, 231, 154, 0.95);
  outline-offset: -2px;
  background: rgba(84, 231, 154, 0.28);
}

.cell.prev-bad {
  outline: 2px solid rgba(244, 81, 60, 0.95);
  outline-offset: -2px;
  background: rgba(244, 81, 60, 0.28);
}

#grid-enemy .cell {
  cursor: crosshair;
}

#grid-enemy .cell:hover {
  box-shadow: inset 0 0 0 1.5px rgba(56, 224, 139, 0.4), var(--cb-shadow-md);
}

#grid-enemy.locked {
  opacity: 0.7;
  filter: saturate(0.75);
}

#grid-enemy.locked .cell {
  cursor: not-allowed;
}

/* Animations pour impacts — pop premium */
.cell.hit,
.cell.miss {
  animation: cellSplash var(--cb-duration-normal) cubic-bezier(0.34, 1.2, 0.64, 1) both;
}

@keyframes cellSplash {
  0% {
    transform: scale(0) rotate(-8deg);
    opacity: 0;
  }
  50% {
    opacity: 1;
    transform: scale(1.08);
  }
  100% {
    transform: scale(1) rotate(0deg);
    opacity: 1;
  }
}

/* ---- GAME ACTIONS ---- */
.game-actions {
  display: flex;
  gap: var(--cb-gap-sm);
  flex-wrap: wrap;
  justify-content: center;
  padding: 0 var(--cb-space-4);
}

.game-actions button {
  font: inherit;
  font-weight: var(--cb-font-bold);
  font-size: var(--cb-text-sm);
  cursor: pointer;
  border-radius: var(--cb-radius-md);
  padding: var(--cb-space-4) var(--cb-space-5);
  border: 1px solid var(--cb-border-light);
  background: rgba(255, 255, 255, 0.06);
  color: var(--cb-text-primary);
  transition: all var(--cb-duration-fast) var(--cb-easing-in-out);
  outline-offset: var(--cb-focus-offset);
  will-change: transform, box-shadow;
}

.game-actions button:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--cb-border-medium);
  transform: translateY(-1px);
  box-shadow: var(--cb-shadow-sm);
}

.game-actions button:active {
  transform: translateY(0);
}

.game-actions button:focus-visible {
  outline: 2px solid var(--cb-accent);
}

.game-actions button.pri {
  color: var(--cb-text-on-primary);
  background: linear-gradient(180deg, var(--flotz-accent), var(--flotz-accent-dark));
  border: 0;
  box-shadow: var(--cb-shadow-md), 0 0 16px rgba(56, 224, 139, 0.3);
  position: relative;
  overflow: hidden;
}

.game-actions button.pri::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
  opacity: 0;
  background-size: 1000px 100%;
}

.game-actions button.pri:hover {
  box-shadow: var(--cb-shadow-lg), 0 0 32px rgba(56, 224, 139, 0.5);
  transform: translateY(-2px);
}

.game-actions button.pri:hover::before {
  opacity: 1;
  animation: shimmer 0.5s ease-in-out;
}

.game-actions button.pri:active {
  transform: translateY(0) scale(0.97);
}

button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ============================================================================
   OVERLAYS & DIALOGS
   ============================================================================ */

.ov {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 60;
  padding: var(--cb-space-8);
  background: var(--flotz-overlay-premium);
  backdrop-filter: var(--cb-glass-blur);
  animation: fadeIn var(--cb-duration-normal) ease-out;
}

.ov.show {
  display: flex;
}

.dialog {
  width: min(94vw, 420px);
  max-height: 88vh;
  overflow-auto;
  background: linear-gradient(135deg, var(--flotz-glass-strong), rgba(8, 29, 49, 0.98));
  border: 1px solid var(--cb-border-light);
  border-radius: var(--cb-radius-xl);
  padding: var(--cb-pad-lg);
  box-shadow: var(--cb-shadow-2xl), var(--cb-shadow-inset);
  text-align: center;
  animation: dialogFloatIn var(--cb-duration-slow) var(--cb-easing-ease-out);
  will-change: transform;
  backdrop-filter: var(--cb-glass-blur);
}

@keyframes dialogFloatIn {
  from {
    transform: scale(0.92) translateY(20px);
    opacity: 0;
  }
  to {
    transform: scale(1) translateY(0);
    opacity: 1;
  }
}

@media (prefers-color-scheme: light) {
  .dialog {
    background: linear-gradient(135deg, rgba(214, 235, 248, 0.95), rgba(208, 229, 244, 0.98));
    border-color: rgba(77, 166, 214, 0.2);
  }
}

.dialog h2 {
  margin: 0 0 var(--cb-space-1);
  font-size: var(--cb-heading-lg);
  color: var(--cb-text-primary);
  font-weight: var(--cb-font-bold);
  letter-spacing: var(--cb-letter-spacing-label);
}

.dialog p {
  margin: 0 0 var(--cb-space-4);
  color: var(--cb-text-secondary);
  font-size: var(--cb-text-base);
  line-height: var(--cb-line-height-relaxed);
  font-weight: var(--cb-font-semibold);
}

.dialog .field {
  display: flex;
  gap: var(--cb-gap-sm);
  margin: var(--cb-space-6) 0;
}

.dialog input {
  flex: 1;
  min-width: 0;
  font: inherit;
  font-size: var(--cb-text-base);
  text-align: center;
  letter-spacing: var(--cb-letter-spacing-caps);
  text-transform: uppercase;
  font-weight: var(--cb-font-bold);
  padding: var(--cb-space-4);
  border-radius: var(--cb-radius-md);
  border: 1px solid var(--cb-border-light);
  background: rgba(0, 0, 0, 0.3);
  color: var(--cb-text-primary);
  transition: all var(--cb-duration-fast) var(--cb-easing-in-out);
  outline-offset: var(--cb-focus-offset);
}

.dialog input:hover {
  border-color: var(--cb-border-medium);
  background: rgba(0, 0, 0, 0.35);
}

.dialog input:focus {
  border-color: var(--cb-accent);
  outline: 2px solid var(--cb-accent);
  background: rgba(0, 0, 0, 0.4);
}

.dialog input::placeholder {
  color: var(--cb-text-secondary);
  letter-spacing: normal;
  text-transform: none;
  font-size: var(--cb-text-sm);
  font-weight: var(--cb-font-semibold);
}

.dialog .btn {
  font: inherit;
  font-weight: var(--cb-font-black);
  border: 0;
  border-radius: var(--cb-radius-md);
  padding: var(--cb-space-4);
  cursor: pointer;
  color: var(--cb-text-on-primary);
  background: linear-gradient(180deg, var(--flotz-accent), var(--flotz-accent-dark));
  white-space: nowrap;
  transition: all var(--cb-duration-fast) var(--cb-easing-in-out);
  outline-offset: 2px;
  position: relative;
  overflow: hidden;
  will-change: transform, box-shadow;
  box-shadow: var(--cb-shadow-md), 0 0 12px rgba(56, 224, 139, 0.2);
}

.dialog .btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  opacity: 0;
  transition: opacity var(--cb-duration-fast);
  background-size: 1000px 100%;
}

.dialog .btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--cb-shadow-lg), 0 0 28px rgba(56, 224, 139, 0.45);
}

.dialog .btn:hover::before {
  opacity: 1;
  animation: shimmer 0.6s ease-in-out;
}

.dialog .btn:active {
  transform: translateY(0) scale(0.96);
  box-shadow: var(--cb-shadow-md), 0 0 8px rgba(56, 224, 139, 0.15);
}

.dialog .btn:focus-visible {
  outline: 3px solid var(--cb-accent);
  box-shadow: var(--cb-shadow-lg), 0 0 28px rgba(56, 224, 139, 0.45), 0 0 0 6px rgba(56, 224, 139, 0.15);
}

.dialog .btn.alt {
  color: var(--cb-text-primary);
  background: linear-gradient(180deg, #4a6fd0, #2e47a8);
  box-shadow: var(--cb-shadow-md), 0 0 16px rgba(43, 86, 212, 0.2);
}

.dialog .btn.alt:hover {
  box-shadow: var(--cb-shadow-lg), 0 0 24px rgba(43, 86, 212, 0.35);
  transform: translateY(-2px);
}

.dialog .btn.alt:active {
  transform: translateY(0);
}

.dialog .btn.ghost {
  color: var(--cb-text-primary);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: none;
  border: 1px solid var(--cb-border-light);
  transition: all var(--cb-duration-fast);
}

.dialog .btn.ghost:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: var(--cb-border-medium);
  transform: translateY(-1px);
}

.dialog .btn.wide {
  display: block;
  width: 100%;
  margin-top: var(--cb-space-4);
}

.dialog .sep {
  color: var(--cb-text-secondary);
  font-size: var(--cb-text-xs);
  font-weight: var(--cb-font-bold);
  letter-spacing: var(--cb-letter-spacing-caps);
  text-transform: uppercase;
  margin: var(--cb-space-8) 0 var(--cb-space-6);
}

/* Victory animation */
.over-emoji {
  font-size: 2.8rem;
  line-height: 1;
  margin-bottom: var(--cb-space-4);
  animation: emojiPop var(--cb-duration-slow) var(--cb-easing-bounce);
}

@keyframes emojiPop {
  0% {
    transform: scale(0);
    opacity: 0;
  }
  60% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

/* ---- TOAST NOTIFICATIONS ---- */
#toast {
  position: fixed;
  left: 50%;
  bottom: calc(var(--cb-space-8) + max(0px, env(safe-area-inset-bottom, 0px)));
  transform: translateX(-50%);
  background: var(--cb-surface-0);
  border: 1px solid var(--cb-border-light);
  color: var(--cb-text-primary);
  padding: var(--cb-space-4) var(--cb-space-6);
  border-radius: var(--cb-radius-md);
  font-weight: var(--cb-font-bold);
  font-size: var(--cb-text-sm);
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--cb-duration-normal) var(--cb-easing-in-out);
  box-shadow: var(--cb-shadow-lg);
  max-width: 86vw;
  text-align: center;
  backdrop-filter: var(--cb-glass-blur);
  letter-spacing: var(--cb-letter-spacing-label);
}

#toast.show {
  opacity: 1;
  pointer-events: auto;
  animation: toastSlideUp var(--cb-duration-normal) var(--cb-easing-bounce);
}

@keyframes toastSlideUp {
  from {
    transform: translateX(-50%) translateY(16px);
    opacity: 0;
  }
  to {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
  }
}

/* ============================================================================
   RESPONSIVE & MOBILE-FIRST
   ============================================================================ */

@media (max-width: 480px) {
  body {
    padding: max(8px, env(safe-area-inset-top)) 8px max(12px, env(safe-area-inset-bottom));
    gap: var(--cb-space-3);
  }

  .topbar, #screen-menu, #screen-game {
    width: 100%;
  }

  .topbar {
    padding: var(--cb-space-4) var(--cb-space-6);
    gap: var(--cb-space-3);
  }

  .brand h1 {
    font-size: 1.1rem;
  }

  .hero .logo {
    font-size: clamp(2rem, 10vw, 2.8rem);
  }

  .menu-card {
    padding: var(--cb-pad-md);
  }

  .board {
    width: min(96vw, 420px);
    gap: max(1.5px, 0.9vw);
    padding: max(1.5px, 0.9vw);
  }

  .dialog {
    width: min(96vw, 380px);
    padding: var(--cb-pad-md);
  }

  .dialog h2 {
    font-size: var(--cb-heading-md);
  }

  #screen-game,
  #screen-menu {
    gap: var(--cb-space-6);
  }
}

@media (max-width: 360px) {
  .topbar {
    flex-wrap: wrap;
    gap: var(--cb-space-3);
  }

  .brand {
    width: 100%;
  }

  .icon-btn {
    font-size: var(--cb-text-xs);
    padding: var(--cb-space-2) var(--cb-space-3);
  }

  .board {
    gap: max(1px, 0.8vw);
    padding: max(1px, 0.8vw);
  }
}

/* Safe-area adjustments for notch/Dynamic Island */
@supports (padding: max(0px)) {
  body {
    padding-top: max(var(--cb-space-2), env(safe-area-inset-top));
    padding-bottom: max(var(--cb-space-6), env(safe-area-inset-bottom));
    padding-left: max(var(--cb-space-4), env(safe-area-inset-left));
    padding-right: max(var(--cb-space-4), env(safe-area-inset-right));
  }

  #toast {
    bottom: calc(var(--cb-space-8) + max(0px, env(safe-area-inset-bottom)));
  }
}

/* ============================================================================
   ACCESSIBILITY & SPECIAL MODES
   ============================================================================ */

/* High contrast mode */
@media (prefers-contrast: more) {
  :root {
    --cb-border-light: rgba(255, 255, 255, 0.16);
    --cb-border-medium: rgba(255, 255, 255, 0.24);
    --cb-border-strong: rgba(255, 255, 255, 0.32);
  }

  .menu-card,
  #place-panel,
  .dialog {
    border-color: var(--cb-border-strong);
  }

  .cell.hit,
  .cell.miss,
  .cell.sunk {
    filter: saturate(1.2);
  }
}

/* RTL Arabic support */
[dir="rtl"] .board {
  direction: ltr;
}

[dir="rtl"] .topbar {
  flex-direction: row-reverse;
}

[dir="rtl"] .brand {
  flex-direction: row-reverse;
}

[dir="rtl"] .dialog .field {
  flex-direction: row-reverse;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .cell.hit,
  .cell.miss {
    animation: none;
  }

  .logo,
  .brand h1 {
    animation: none !important;
  }

  .big-btn:hover,
  .icon-btn.pri:hover,
  .game-actions button.pri:hover,
  .big-btn.alt:hover {
    transform: none;
  }
}