/* ============================================================
   GLOBAL LAYOUT + ANIMATIONS
   ============================================================ */

/* ── Ocean Background ── */
.bg-ocean {
  position: fixed;
  inset: 0;
  background: var(--gradient-ocean);
  z-index: -2;
}

/* Animated water texture overlay */
.bg-ocean::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 80%, rgba(30, 111, 168, 0.18) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(11, 45, 91, 0.25) 0%, transparent 55%),
    radial-gradient(ellipse 40% 40% at 50% 50%, rgba(31, 78, 154, 0.12) 0%, transparent 70%);
  animation: oceanPulse 12s ease-in-out infinite alternate;
}

/* Grid pattern overlay */
.bg-ocean::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(185, 217, 242, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(185, 217, 242, 0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 0%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 0%, transparent 100%);
}

@keyframes oceanPulse {
  0%   { opacity: 0.7; transform: scale(1); }
  100% { opacity: 1;   transform: scale(1.05); }
}

/* ── Glass Card Base ── */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md), var(--shadow-inset);
}

.glass-card--hover:hover {
  background: rgba(11, 30, 54, 0.75);
  border-color: rgba(185, 217, 242, 0.2);
  box-shadow: var(--shadow-lg), var(--shadow-glow-blue), var(--shadow-inset);
  transform: translateY(-2px);
  transition: all var(--dur-base) var(--ease-smooth);
}

/* ── App Shell ── */
#app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.app-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: var(--space-6);
  gap: var(--space-6);
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

/* ── Screen System ── */
.screen {
  display: none;
  flex-direction: column;
  flex: 1;
}
.screen--active {
  display: flex;
  animation: screenFadeIn var(--dur-slow) var(--ease-out) both;
}

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

/* ── Floating Particles ── */
.particles {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.particle {
  position: absolute;
  border-radius: 50%;
  background: var(--navy-400);
  opacity: 0;
  animation: float linear infinite;
}

@keyframes float {
  0%   { transform: translateY(100vh) rotate(0deg); opacity: 0; }
  10%  { opacity: 0.15; }
  90%  { opacity: 0.08; }
  100% { transform: translateY(-100px) rotate(720deg); opacity: 0; }
}

/* ── Typography ── */
.display-xl {
  font-family: var(--font-display);
  font-size: clamp(var(--text-3xl), 5vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.display-lg {
  font-family: var(--font-display);
  font-size: clamp(var(--text-2xl), 3.5vw, var(--text-4xl));
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.1;
}

.display-md {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  letter-spacing: -0.015em;
}

.label-mono {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--navy-300);
}

.text-muted { color: var(--gray-400); }
.text-accent { color: var(--navy-300); }
.text-hit   { color: var(--hit-light); }
.text-miss  { color: var(--gray-300); }

/* ── Gradient Text ── */
.gradient-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Divider ── */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-border) 30%, var(--glass-border) 70%, transparent);
}

/* ── Badge ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.badge--waiting  { background: rgba(110, 123, 133, 0.2); color: var(--gray-300); border: 1px solid rgba(110,123,133,0.3); }
.badge--active   { background: rgba(30, 111, 168, 0.2);  color: var(--navy-300); border: 1px solid rgba(30,111,168,0.4); }
.badge--finished { background: rgba(214, 40, 40, 0.15);  color: var(--hit-light); border: 1px solid rgba(214,40,40,0.3); }
.badge--your-turn { background: rgba(30,111,168,0.25); color: #7ECFF8; border: 1px solid rgba(94,176,232,0.5); animation: pulseBadge 2s ease-in-out infinite; }

@keyframes pulseBadge {
  0%, 100% { box-shadow: 0 0 0 0 rgba(94, 176, 232, 0); }
  50%       { box-shadow: 0 0 0 4px rgba(94, 176, 232, 0.2); }
}

/* ── Dot indicator ── */
.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}
.dot--waiting  { background: var(--gray-400); }
.dot--active   { background: var(--navy-300); box-shadow: 0 0 6px var(--navy-300); animation: dotPulse 2s ease infinite; }
.dot--finished { background: var(--hit); }

@keyframes dotPulse {
  0%, 100% { transform: scale(1);   opacity: 1; }
  50%       { transform: scale(1.4); opacity: 0.7; }
}

/* ── Animations ── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.88); }
  to   { opacity: 1; transform: scale(1); }
}

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

@keyframes hitBurst {
  0%   { transform: scale(1);    box-shadow: 0 0 0 0 var(--hit-glow); }
  40%  { transform: scale(1.35); box-shadow: 0 0 0 16px rgba(214,40,40,0); }
  100% { transform: scale(1);    box-shadow: 0 0 8px var(--hit-glow); }
}

@keyframes missSettle {
  0%   { transform: scale(0); opacity: 0; }
  60%  { transform: scale(1.2); }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes shipReveal {
  0%   { background: transparent; border-color: var(--glass-border); }
  100% { background: var(--ship-intact); border-color: var(--navy-400); }
}

@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}

@keyframes toastSlide {
  from { opacity: 0; transform: translateY(20px) scale(0.95); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* ── Loading Spinner ── */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--glass-border);
  border-top-color: var(--navy-300);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

/* ── Skeleton Loading ── */
.skeleton {
  background: linear-gradient(90deg,
    var(--glass-bg) 25%,
    rgba(185,217,242,0.06) 50%,
    var(--glass-bg) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .app-main { padding: var(--space-4); gap: var(--space-4); }
}
@media (max-width: 600px) {
  .app-main { padding: var(--space-3); gap: var(--space-3); }
}