/* ============ Tokens ============ */
:root {
  --cream: #fffaf7;
  --white: #ffffff;
  --pink-50: #fff5f9;
  --pink-100: #ffe9f2;
  --pink-200: #ffd3e6;
  --pink-300: #ffb0d1;
  --pink-400: #ff8fbe;
  --pink-500: #f2679f;
  --pink-600: #d94f87;
  --pink-700: #b23a6b;
  --brown: #c98a64;
  --brown-dark: #a86f4d;
  --ink: #3a2a30;
  --ink-soft: #6e5860;
  --ink-faint: #a4909a;
  --blue-def: #0a63a8;
  --blue-def-bg: #eaf3fb;
  --border: #f5d9e6;
  --shadow-color: 340 55% 78%;

  --font-display: "Fraunces", "Iowan Old Style", serif;
  --font-body: "Figtree", -apple-system, sans-serif;

  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--cream);
  overflow-x: hidden;
  position: relative;
}

h1, h2, h3 { font-family: var(--font-display); margin: 0; }

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input {
  font-family: inherit;
}

/* ============ Background scene ============ */
.bg-scene {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background:
    radial-gradient(ellipse 90% 60% at 15% -10%, var(--pink-100) 0%, transparent 60%),
    radial-gradient(ellipse 80% 50% at 100% 110%, var(--pink-50) 0%, transparent 55%),
    var(--cream);
}

.bg-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.5;
}
.blob-1 {
  width: 480px; height: 480px;
  top: -180px; right: -160px;
  background: radial-gradient(circle, var(--pink-200), transparent 70%);
}
.blob-2 {
  width: 420px; height: 420px;
  bottom: -200px; left: -140px;
  background: radial-gradient(circle, #ffd9c2, transparent 70%);
}

.bg-paws {
  position: absolute;
  inset: 0;
  opacity: 0.35;
  background-image:
    radial-gradient(circle at center, var(--pink-200) 2.5px, transparent 2.6px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 20%, black 0%, transparent 70%);
}

/* ============ Gate ============ */
.gate {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.gate-card {
  width: 100%;
  max-width: 400px;
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px 32px 34px;
  text-align: center;
  box-shadow:
    0 1px 2px hsl(var(--shadow-color) / 0.15),
    0 24px 48px -12px hsl(var(--shadow-color) / 0.35);
  border: 1px solid var(--border);
  position: relative;
  animation: gate-rise 0.7s cubic-bezier(.2,.9,.25,1.1);
}

@keyframes gate-rise {
  from { opacity: 0; transform: translateY(24px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.gate-dog {
  display: inline-block;
  margin-bottom: 6px;
  animation: bob 3.2s ease-in-out infinite;
}
@keyframes bob {
  0%, 100% { transform: translateY(0) rotate(-1deg); }
  50% { transform: translateY(-6px) rotate(1deg); }
}

.dackel-svg .tail {
  animation: wag 0.55s ease-in-out infinite;
}
@keyframes wag {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(-22deg); }
}

.gate-eyebrow {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--pink-600);
  font-weight: 600;
  margin: 4px 0 2px;
}

.gate-title {
  font-size: 40px;
  font-weight: 600;
  font-style: italic;
  color: var(--ink);
  margin: 6px 0 4px;
}

.gate-sub {
  color: var(--ink-soft);
  font-size: 15px;
  margin: 0 0 26px;
}

.gate-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.gate-input {
  width: 100%;
  padding: 15px 18px;
  border-radius: 999px;
  border: 2px solid var(--border);
  background: var(--pink-50);
  font-size: 16px;
  color: var(--ink);
  text-align: center;
  letter-spacing: 0.02em;
  outline: none;
  transition: border-color 0.2s, background 0.2s, transform 0.15s;
}
.gate-input:focus {
  border-color: var(--pink-400);
  background: var(--white);
}

.gate-btn {
  padding: 15px 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--pink-500), var(--pink-600));
  color: white;
  font-weight: 700;
  font-size: 15.5px;
  box-shadow: 0 10px 24px -8px hsl(var(--shadow-color) / 0.7);
  transition: transform 0.15s, box-shadow 0.15s;
}
.gate-btn:hover { transform: translateY(-2px); box-shadow: 0 14px 28px -8px hsl(var(--shadow-color) / 0.8); }
.gate-btn:active { transform: translateY(0px) scale(0.98); }

.gate-error {
  margin: 16px 0 0;
  color: var(--pink-700);
  font-weight: 600;
  font-size: 14px;
  animation: shake 0.4s;
}
@keyframes shake {
  10%, 90% { transform: translateX(-2px); }
  20%, 80% { transform: translateX(4px); }
  30%, 50%, 70% { transform: translateX(-8px); }
  40%, 60% { transform: translateX(8px); }
}

.gate-card.shake { animation: gate-rise 0.7s cubic-bezier(.2,.9,.25,1.1), shake 0.4s; }

/* ============ App shell ============ */
#app-screen {
  max-width: 640px;
  margin: 0 auto;
  padding: 20px 18px 60px;
  min-height: 100dvh;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 2px 18px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px;
  border-radius: 999px;
}
.logo-svg { flex-shrink: 0; transition: transform 0.2s; }
.logo:hover .logo-svg { transform: translateY(-2px) rotate(-3deg); }
.logo:active .logo-svg { transform: scale(0.9); }

.logo-text {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.logo-text em {
  font-style: italic;
  color: var(--pink-600);
  font-weight: 500;
}

.logout-btn {
  font-size: 12.5px;
  color: var(--ink-faint);
  padding: 8px 12px;
  border-radius: 999px;
  transition: background 0.15s, color 0.15s;
}
.logout-btn:hover { background: var(--pink-100); color: var(--pink-600); }

/* ============ Stats ============ */
.stats-bar {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  margin-bottom: 14px;
}
.stats-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 10px;
}
.stats-label {
  font-family: var(--font-display);
  font-size: 16px;
  color: var(--ink);
}
.stats-label span { font-weight: 700; color: var(--pink-600); }
.stats-percent {
  font-size: 13px;
  color: var(--ink-faint);
  font-weight: 600;
}
.progress-track {
  height: 10px;
  border-radius: 999px;
  background: var(--pink-100);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--pink-400), var(--pink-600));
  transition: width 0.5s cubic-bezier(.2,.9,.25,1);
}

.sync-status {
  margin: 10px 0 0;
  font-size: 11.5px;
  color: var(--ink-faint);
  font-weight: 600;
}
.sync-status.is-error { color: #c14848; }
.sync-status.is-ok { color: #2f9e58; }

/* ============ Controls ============ */
.controls {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.control-field {
  display: flex;
  flex-direction: column;
  gap: 3px;
  flex: 1;
  min-width: 150px;
}
.control-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  font-weight: 700;
  padding-left: 4px;
}
.control-select {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  background: var(--white);
  font-size: 14px;
  color: var(--ink);
  max-width: 100%;
}

.control-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--ink-soft);
  font-weight: 600;
  padding: 8px 12px;
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  cursor: pointer;
}
.control-toggle input { accent-color: var(--pink-500); width: 15px; height: 15px; }

.control-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--white);
  border: 1.5px solid var(--border);
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s, background 0.15s;
}
.control-btn:hover { background: var(--pink-50); transform: translateY(-1px); }
.control-btn:active { transform: scale(0.92); }
.control-btn-ghost { color: var(--ink-faint); }

/* ============ Card ============ */
.stage {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.card-wrap {
  width: 100%;
  perspective: 1400px;
}

.card {
  position: relative;
  width: 100%;
  min-height: 360px;
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 30px 26px 28px;
  box-shadow:
    0 1px 2px hsl(var(--shadow-color) / 0.1),
    0 20px 40px -16px hsl(var(--shadow-color) / 0.4);
  display: flex;
  flex-direction: column;
  animation: card-in 0.4s cubic-bezier(.2,.9,.25,1.1);
}

@keyframes card-in {
  from { opacity: 0; transform: translateY(14px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.card-badge {
  align-self: flex-start;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--pink-700);
  background: var(--pink-100);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
  max-width: 100%;
}

.card-face-front, .card-face-back {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-kicker {
  font-size: 12.5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  font-weight: 700;
  margin: 0 0 10px;
}

.card-term {
  font-size: clamp(26px, 5.2vw, 34px);
  font-weight: 600;
  line-height: 1.15;
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--pink-400);
  text-decoration-thickness: 3px;
  text-underline-offset: 6px;
  margin: 0 0 auto;
}

.card-term-small {
  font-size: clamp(20px, 4vw, 24px);
  text-decoration-thickness: 2.5px;
  text-underline-offset: 5px;
  margin-bottom: 18px;
  color: var(--ink-soft);
}

.card-hint {
  color: var(--ink-faint);
  font-size: 13.5px;
  margin: 18px 0 22px;
  font-style: italic;
}

.reveal-btn {
  margin-top: auto;
  align-self: stretch;
  padding: 15px;
  border-radius: var(--radius-sm);
  background: var(--ink);
  color: white;
  font-weight: 700;
  font-size: 15px;
  transition: transform 0.15s, background 0.15s;
}
.reveal-btn:hover { background: var(--pink-600); transform: translateY(-1px); }
.reveal-btn:active { transform: scale(0.98); }

.card-definition {
  font-size: 17px;
  line-height: 1.55;
  color: var(--blue-def);
  background: var(--blue-def-bg);
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  white-space: pre-line;
  margin: 0 0 12px;
  animation: def-in 0.35s ease;
}
@keyframes def-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.card-notes {
  font-size: 13px;
  color: var(--ink-faint);
  font-style: italic;
  line-height: 1.5;
  margin: 0;
  padding-left: 4px;
}

/* ============ Judge row ============ */
.judge-row {
  display: flex;
  gap: 12px;
  width: 100%;
  margin-top: 16px;
  animation: def-in 0.35s ease;
}
.judge-btn {
  flex: 1;
  padding: 15px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: transform 0.15s, box-shadow 0.15s;
  border: 1.5px solid transparent;
}
.judge-icon { font-size: 17px; }
.judge-wrong {
  background: #fff1f1;
  color: #c14848;
  border-color: #ffd8d8;
}
.judge-wrong:hover { transform: translateY(-2px); box-shadow: 0 8px 18px -8px rgba(193,72,72,0.35); }
.judge-right {
  background: #eefaf1;
  color: #2f9e58;
  border-color: #cdf0d9;
}
.judge-right:hover { transform: translateY(-2px); box-shadow: 0 8px 18px -8px rgba(47,158,88,0.35); }
.judge-btn:active { transform: scale(0.96); }

.deck-progress {
  margin-top: 14px;
  font-size: 12.5px;
  color: var(--ink-faint);
  font-weight: 600;
}

/* ============ Footer ============ */
.footnote {
  text-align: center;
  margin-top: 40px;
  font-size: 11.5px;
  color: var(--ink-faint);
  letter-spacing: 0.02em;
}

/* ============ Easter eggs ============ */
.runway-layer {
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 0;
  pointer-events: none;
  z-index: 200;
}
.runner {
  position: fixed;
  bottom: 12px;
  font-size: 34px;
  z-index: 200;
  pointer-events: none;
  animation-name: run-across;
  animation-timing-function: linear;
  animation-fill-mode: forwards;
  filter: drop-shadow(0 6px 6px rgba(0,0,0,0.15));
}
@keyframes run-across {
  from { left: -60px; transform: scaleX(1); }
  to { left: 105%; transform: scaleX(1); }
}

.confetti-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 250;
  overflow: hidden;
}
.confetti-piece {
  position: absolute;
  top: -40px;
  font-size: 22px;
  animation-name: confetti-fall;
  animation-timing-function: cubic-bezier(.4,.2,.6,1);
  animation-fill-mode: forwards;
}
@keyframes confetti-fall {
  from { transform: translateY(0) rotate(0deg); opacity: 1; }
  to { transform: translateY(105vh) rotate(360deg); opacity: 0.85; }
}

.streak-toast {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: var(--ink);
  color: white;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 14px;
  z-index: 260;
  opacity: 0;
  transition: opacity 0.3s, transform 0.3s;
  box-shadow: 0 12px 28px -8px rgba(0,0,0,0.35);
  white-space: nowrap;
}
.streak-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.celebrate-overlay {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: radial-gradient(ellipse at center, rgba(255,255,255,0.97), rgba(255,233,242,0.97));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  text-align: center;
  padding: 24px;
  animation: def-in 0.4s ease;
}
.celebrate-overlay h2 {
  font-size: clamp(28px, 6vw, 44px);
  font-style: italic;
  color: var(--pink-700);
  margin-bottom: 10px;
}
.celebrate-overlay p {
  color: var(--ink-soft);
  margin-bottom: 26px;
  max-width: 360px;
}
.celebrate-close {
  padding: 14px 28px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--pink-500), var(--pink-600));
  color: white;
  font-weight: 700;
  box-shadow: 0 10px 24px -8px hsl(var(--shadow-color) / 0.7);
}

/* Any element toggled via the `hidden` attribute must actually hide,
   even if another rule here sets `display` on the same element. */
[hidden] {
  display: none !important;
}

@media (max-width: 420px) {
  .controls { gap: 8px; }
  .control-toggle span { display: none; }
  .control-toggle { padding: 8px; }
  .control-toggle::after { content: "🤔"; }
}