/* style.css — PULSO v3 — modern dark UI with subtle animations */

:root {
  --accent: #f0c040;
  --accent-glow: rgba(240, 192, 64, 0.15);
  --green: #4ade80;
  --red: #f87171;
  --glass: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.08);
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: #0a0a0f;
  min-height: 100dvh;
}

/* ─── Logo ────────────────────────────────────────────────────────────── */
.logo {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--accent);
  text-shadow: 0 0 20px var(--accent-glow);
}

/* ─── Cards: glass effect ─────────────────────────────────────────────── */
.card {
  background: var(--glass) !important;
  border: 1px solid var(--glass-border) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 16px !important;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* ─── Timer bar ───────────────────────────────────────────────────────── */
.timer-bar {
  height: 3px;
  background: var(--glass-border);
  border-radius: 2px;
  overflow: hidden;
}
.timer-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #ffd700);
  border-radius: 2px;
  transition: width 0.1s linear;
}
.timer-fill.urgent {
  background: linear-gradient(90deg, var(--red), #ff4444);
  animation: pulse-urgent 0.5s ease infinite;
}

@keyframes pulse-urgent {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* ─── Option buttons ──────────────────────────────────────────────────── */
.btn-option {
  border-radius: 12px !important;
  border: 1px solid var(--glass-border) !important;
  background: var(--glass) !important;
  color: #e0e0e0 !important;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}
.btn-option:hover:not(:disabled) {
  border-color: var(--accent) !important;
  background: var(--accent-glow) !important;
  color: #fff !important;
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(240, 192, 64, 0.15);
}
.btn-option:active:not(:disabled) {
  transform: scale(0.97);
}
.btn-option:disabled {
  opacity: 0.5;
  cursor: default;
}
.btn-option.selected {
  border-color: var(--accent) !important;
  background: var(--accent-glow) !important;
  box-shadow: 0 0 20px var(--accent-glow);
}
.btn-option.correct {
  border-color: var(--green) !important;
  background: rgba(74, 222, 128, 0.12) !important;
  color: var(--green) !important;
  box-shadow: 0 0 20px rgba(74, 222, 128, 0.15);
}
.btn-option.wrong {
  border-color: var(--red) !important;
  background: rgba(248, 113, 113, 0.12) !important;
  color: var(--red) !important;
}
.btn-option .dist-label {
  font-size: 0.75rem;
  font-weight: 400;
}

/* ─── Fade-in animation ──────────────────────────────────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-in {
  animation: fadeInUp 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}
.fade-in-delay-1 { animation-delay: 0.08s; opacity: 0; }
.fade-in-delay-2 { animation-delay: 0.16s; opacity: 0; }
.fade-in-delay-3 { animation-delay: 0.24s; opacity: 0; }

/* ─── Result section ──────────────────────────────────────────────────── */
@keyframes scoreReveal {
  from { opacity: 0; transform: scale(0.7); }
  to   { opacity: 1; transform: scale(1); }
}
.score-reveal {
  animation: scoreReveal 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

/* ─── Colors ──────────────────────────────────────────────────────────── */
.text-accent { color: var(--accent) !important; }
.text-green  { color: var(--green) !important; }
.text-red    { color: var(--red) !important; }

/* ─── Badges ──────────────────────────────────────────────────────────── */
.badge {
  font-weight: 600;
  border-radius: 8px;
}
.badge.bg-secondary {
  background: var(--glass) !important;
  border: 1px solid var(--glass-border);
}

/* ─── Nav tabs (ranking) ──────────────────────────────────────────────── */
.nav-tabs {
  border-bottom-color: var(--glass-border);
}
.nav-tabs .nav-link {
  color: #888;
  font-weight: 600;
  font-size: 0.85rem;
  border-radius: 8px 8px 0 0;
  transition: color 0.2s;
}
.nav-tabs .nav-link.active {
  color: var(--accent);
  background: transparent;
  border-color: var(--glass-border) var(--glass-border) transparent;
}

/* ─── Leaderboard rows ────────────────────────────────────────────────── */
.lb-row, .lb-row-s {
  transition: background 0.2s;
  border-radius: 8px;
  padding-left: 4px;
  padding-right: 4px;
}
.lb-row:hover, .lb-row-s:hover {
  background: var(--glass);
}

/* ─── Consensus badge ─────────────────────────────────────────────────── */
.consensus-badge {
  font-size: 0.7rem;
  padding: 2px 6px;
  border-radius: 6px;
  background: rgba(56, 189, 248, 0.12);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.2);
}

/* ─── Login card ──────────────────────────────────────────────────────── */
#inp-user, #inp-pass {
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--glass-border);
  transition: border-color 0.2s, box-shadow 0.2s;
}
#inp-user:focus, #inp-pass:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

/* ─── Utility ─────────────────────────────────────────────────────────── */
.streak-val {
  font-size: 0.8rem;
}