/* =========================================================
   Slash Cards — global styles
   Modern, kid-friendly, fully responsive
   ========================================================= */

:root {
  --bg-deep: #0b1f3a;
  --bg-mid: #123a5c;
  --bg-glow: #1a5f7a;
  --accent: #ff6b35;
  --accent-hot: #ff3d71;
  --accent-lime: #7bed9f;
  --accent-gold: #ffd56b;
  --accent-sky: #4ecdc4;
  --text: #f7fbff;
  --text-muted: #a8c0d8;
  --panel: rgba(255, 255, 255, 0.1);
  --panel-solid: #143552;
  --border: rgba(255, 255, 255, 0.18);
  --danger: #ff6b81;
  --success: #2ed573;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --radius: 18px;
  --font-display: "Fredoka", system-ui, sans-serif;
  --font-body: "Nunito", system-ui, sans-serif;
  --timer-max: 10;
}

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

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

body {
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(ellipse 80% 60% at 20% 10%, rgba(255, 107, 53, 0.28), transparent 55%),
    radial-gradient(ellipse 70% 50% at 90% 20%, rgba(78, 205, 196, 0.22), transparent 50%),
    radial-gradient(ellipse 60% 50% at 50% 100%, rgba(255, 61, 113, 0.18), transparent 55%),
    linear-gradient(160deg, var(--bg-deep), var(--bg-mid) 45%, var(--bg-glow));
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
}

[hidden] {
  display: none !important;
}

/* ---------- Fireworks canvas ---------- */
#fireworks-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

/* ---------- Screens ---------- */
.screen {
  position: relative;
  z-index: 2;
  min-height: 100vh;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  animation: fadeIn 0.45s ease;
}

.screen.active {
  display: flex;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- Welcome ---------- */
.welcome-content {
  text-align: center;
  max-width: 640px;
  padding: 2rem 1rem;
}

.brand-mark {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  margin: 0 0 0.4rem;
  background: linear-gradient(110deg, var(--accent-gold), var(--accent), var(--accent-hot));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: none;
  animation: brandGlow 2.5s ease-in-out infinite alternate;
}

@keyframes brandGlow {
  from {
    filter: drop-shadow(0 0 8px rgba(255, 213, 107, 0.35));
  }
  to {
    filter: drop-shadow(0 0 18px rgba(255, 107, 53, 0.55));
  }
}

.welcome-title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 4vw, 2rem);
  font-weight: 500;
  margin: 0.25rem 0;
}

.welcome-subtitle {
  color: var(--text-muted);
  margin: 0 0 1.25rem;
  font-size: 1.05rem;
}

.creator-credit {
  margin: 0 0 2rem;
  font-size: 1.05rem;
  color: var(--text-muted);
}

.creator-credit span {
  color: var(--accent-gold);
  font-weight: 800;
  letter-spacing: 0.06em;
}

.welcome-hint {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  opacity: 0.85;
}

/* ---------- Buttons ---------- */
.btn {
  font-family: var(--font-body);
  font-weight: 800;
  font-size: 1rem;
  border: none;
  border-radius: 999px;
  padding: 0.85rem 1.6rem;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

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

.btn:focus-visible {
  outline: 3px solid var(--accent-gold);
  outline-offset: 3px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-hot));
  color: #fff;
  box-shadow: 0 10px 28px rgba(255, 61, 113, 0.35);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.14);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-accent {
  background: linear-gradient(135deg, var(--accent-sky), #2ecc71);
  color: #0b1f3a;
  box-shadow: 0 10px 28px rgba(78, 205, 196, 0.3);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn-lg {
  font-size: 1.15rem;
  padding: 1rem 2.2rem;
}

.btn-block {
  width: 100%;
}

.btn-sm {
  font-size: 0.85rem;
  padding: 0.45rem 0.9rem;
}

.pulse {
  animation: pulse 1.8s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    box-shadow: 0 10px 28px rgba(255, 61, 113, 0.35);
  }
  50% {
    box-shadow: 0 10px 40px rgba(255, 213, 107, 0.55);
  }
}

/* ---------- Panels / forms ---------- */
.panel {
  width: min(920px, 100%);
  background: var(--panel);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow);
}

.panel-sm {
  background: rgba(0, 0, 0, 0.22);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
}

.panel-header {
  text-align: center;
  margin-bottom: 1.4rem;
}

.panel-header h2 {
  font-family: var(--font-display);
  margin: 0 0 0.35rem;
  font-size: 1.85rem;
}

.panel-header p {
  margin: 0;
  color: var(--text-muted);
}

.setup-panel {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 800px) {
  .setup-panel {
    grid-template-columns: 1.4fr 0.9fr;
    align-items: start;
  }

  .setup-panel .panel-header {
    grid-column: 1 / -1;
  }
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.field label,
.card-count-field legend,
.admin-filters label {
  font-weight: 700;
  font-size: 0.95rem;
}

.field input,
.field textarea,
.field select,
.admin-filters select {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.8rem 1rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.25);
  color: var(--text);
}

.field input:focus,
.field textarea:focus,
.field select:focus,
.admin-filters select:focus {
  outline: 2px solid var(--accent-sky);
  border-color: transparent;
}

.field-error {
  color: var(--danger);
  font-size: 0.85rem;
  min-height: 1.1em;
}

.card-count-field {
  border: none;
  margin: 0 0 1.25rem;
  padding: 0;
}

.card-count-options {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.65rem;
  margin-top: 0.65rem;
}

.count-option {
  cursor: pointer;
}

.count-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.count-option span {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 3.2rem;
  border-radius: 14px;
  border: 2px solid var(--border);
  background: rgba(0, 0, 0, 0.2);
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  transition: background 0.15s, border-color 0.15s, transform 0.15s;
}

.count-option input:checked + span {
  border-color: var(--accent);
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.35), rgba(255, 61, 113, 0.35));
  transform: scale(1.04);
}

.count-option input:focus-visible + span {
  outline: 3px solid var(--accent-gold);
  outline-offset: 2px;
}

/* ---------- Leaderboard ---------- */
.leaderboard-preview h3,
.quiz-leaderboard h3,
.final-leaderboard h3 {
  font-family: var(--font-display);
  margin: 0 0 0.75rem;
  font-size: 1.15rem;
}

.leaderboard-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.leaderboard-list li {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.55rem 0.7rem;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.06);
  font-size: 0.92rem;
}

.leaderboard-list li.highlight {
  border: 1px solid var(--accent-gold);
  background: rgba(255, 213, 107, 0.12);
}

.leaderboard-list .rank {
  color: var(--accent-gold);
  font-weight: 800;
  margin-right: 0.4rem;
}

.leaderboard-empty {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 0;
}

/* ---------- Quiz ---------- */
.quiz-layout {
  width: min(1100px, 100%);
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 900px) {
  .quiz-layout {
    grid-template-columns: 1fr 240px;
    grid-template-rows: auto 1fr;
  }

  .quiz-topbar {
    grid-column: 1 / -1;
  }

  .quiz-leaderboard {
    grid-row: 2;
    grid-column: 2;
    align-self: start;
  }
}

.quiz-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.quiz-meta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  font-weight: 800;
}

.timer-wrap {
  position: relative;
  width: 64px;
  height: 64px;
  display: grid;
  place-items: center;
}

.timer-ring {
  position: absolute;
  inset: 0;
  transform: rotate(-90deg);
}

.timer-bg {
  fill: none;
  stroke: rgba(255, 255, 255, 0.15);
  stroke-width: 3;
}

.timer-fg {
  fill: none;
  stroke: var(--accent-gold);
  stroke-width: 3;
  stroke-linecap: round;
  transition: stroke-dasharray 0.2s linear, stroke 0.2s;
}

.timer-wrap.urgent .timer-fg {
  stroke: var(--danger);
}

#timer-value {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  z-index: 1;
}

.slash-card {
  background: linear-gradient(160deg, #1c4a6e, #0f2d48);
  border: 2px solid rgba(255, 213, 107, 0.35);
  border-radius: 24px;
  padding: 1.5rem 1.35rem 1.75rem;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  animation: cardIn 0.35s ease;
}

@keyframes cardIn {
  from {
    opacity: 0;
    transform: scale(0.96) rotate(-0.5deg);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.slash-card-banner {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
  font-weight: 800;
  font-size: 0.95rem;
  padding: 0.55rem 0.85rem;
  border-radius: 12px;
  background: rgba(255, 213, 107, 0.12);
  border: 1px solid rgba(255, 213, 107, 0.25);
  margin-bottom: 1rem;
}

.slash-card-label {
  margin: 0 0 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  color: var(--accent-sky);
  font-weight: 800;
}

.question-text {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 3.5vw, 1.75rem);
  margin: 0 0 1.25rem;
  line-height: 1.35;
}

.answer-options {
  display: grid;
  gap: 0.75rem;
}

@media (min-width: 600px) {
  .answer-options {
    grid-template-columns: 1fr 1fr;
  }
}

.answer-btn {
  text-align: left;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 700;
  padding: 1rem 1.1rem;
  border-radius: 14px;
  border: 2px solid var(--border);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  cursor: pointer;
  transition: transform 0.12s, border-color 0.12s, background 0.12s;
}

.answer-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  border-color: var(--accent-sky);
}

.answer-btn:disabled {
  cursor: default;
  opacity: 0.95;
}

.answer-btn.correct {
  border-color: var(--success);
  background: rgba(46, 213, 115, 0.2);
}

.answer-btn.wrong {
  border-color: var(--danger);
  background: rgba(255, 107, 129, 0.18);
}

.feedback {
  min-height: 1.5rem;
  margin: 1rem 0 0;
  font-weight: 800;
  text-align: center;
}

.feedback.good {
  color: var(--success);
}

.feedback.bad {
  color: var(--danger);
}

/* ---------- Certificate ---------- */
.certificate-layout {
  width: min(820px, 100%);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  align-items: center;
}

.certificate {
  width: 100%;
  background:
    linear-gradient(135deg, rgba(255, 213, 107, 0.12), transparent 40%),
    linear-gradient(180deg, #fffdf8, #f3e7d3);
  color: #1a2b3c;
  border: 6px double #c9a227;
  border-radius: 12px;
  padding: 2rem 1.5rem;
  text-align: center;
  position: relative;
  box-shadow: var(--shadow);
}

.certificate-ornament {
  height: 4px;
  width: 60%;
  margin: 0 auto;
  background: linear-gradient(90deg, transparent, #c9a227, transparent);
}

.certificate-ornament.top {
  margin-bottom: 1rem;
}

.certificate-ornament.bottom {
  margin-top: 1.25rem;
}

.certificate-brand {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.14em;
  color: #b8860b;
  margin: 0;
}

.certificate-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  margin: 0.5rem 0 1rem;
  color: #0f2d48;
}

.certificate-presented {
  margin: 0;
  color: #4a5d70;
}

.certificate-name {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  margin: 0.4rem 0 0.75rem;
  color: #c0392b;
}

.certificate-body {
  margin: 0;
  font-size: 1.05rem;
  color: #2c3e50;
}

.certificate-percent {
  display: block;
  margin-top: 0.35rem;
  font-weight: 800;
  color: #1a5f7a;
}

.certificate-footer {
  margin: 1.1rem 0 0;
  font-size: 0.9rem;
  color: #6a7b8c;
}

.certificate-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  width: 100%;
}

.certificate-actions .btn {
  flex: 1 1 160px;
}

.final-leaderboard {
  width: 100%;
}

.toast {
  margin: 0;
  padding: 0.65rem 1rem;
  border-radius: 10px;
  background: rgba(46, 213, 115, 0.2);
  border: 1px solid var(--success);
  color: var(--accent-lime);
  font-weight: 700;
}

/* ---------- Admin ---------- */
.admin-panel {
  width: min(440px, 100%);
}

.admin-dashboard {
  width: min(1000px, 100%);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  flex-wrap: wrap;
}

.admin-header h2 {
  font-family: var(--font-display);
  margin: 0 0 0.25rem;
}

.admin-header p {
  margin: 0;
  color: var(--text-muted);
}

.question-form {
  width: 100%;
}

.options-grid {
  display: grid;
  gap: 0.5rem;
}

@media (min-width: 700px) {
  .options-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.admin-form-row {
  display: grid;
  gap: 0.75rem;
}

@media (min-width: 600px) {
  .admin-form-row {
    grid-template-columns: 1fr 1fr;
  }
}

.admin-form-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.admin-filters {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.questions-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.2);
}

.questions-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.questions-table th,
.questions-table td {
  padding: 0.75rem 0.85rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.questions-table th {
  background: rgba(255, 255, 255, 0.06);
  font-weight: 800;
  white-space: nowrap;
}

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

.q-actions {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.badge {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
}

.badge-easy {
  background: rgba(46, 213, 115, 0.2);
  color: var(--accent-lime);
}

.badge-medium {
  background: rgba(255, 213, 107, 0.2);
  color: var(--accent-gold);
}

.badge-hard {
  background: rgba(255, 61, 113, 0.2);
  color: #ff8fab;
}

.admin-trigger {
  position: fixed;
  bottom: 8px;
  right: 8px;
  width: 28px;
  height: 28px;
  opacity: 0.01;
  border: none;
  background: transparent;
  cursor: default;
  z-index: 5;
}

/* ---------- Mobile tweaks ---------- */
@media (max-width: 480px) {
  .card-count-options {
    grid-template-columns: repeat(2, 1fr);
  }

  .panel {
    padding: 1.25rem;
  }

  .certificate {
    padding: 1.35rem 1rem;
  }
}