/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0f0f1a;
  --surface: rgba(255,255,255,0.06);
  --surface-hover: rgba(255,255,255,0.10);
  --border: rgba(255,255,255,0.10);
  --text: #e8e8f0;
  --text-muted: #8888a8;
  --accent: #6c63ff;
  --accent-light: #8b83ff;
  --accent-glow: rgba(108,99,255,0.3);
  --success: #34d399;
  --danger: #f87171;
  --radius: 16px;
  --radius-sm: 10px;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
}

html { font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
  overflow-x: hidden;
  line-height: 1.5;
}

/* Background gradient */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 10%, rgba(108,99,255,0.12), transparent),
    radial-gradient(ellipse 60% 50% at 80% 80%, rgba(99,180,255,0.08), transparent);
  pointer-events: none;
  z-index: 0;
}

/* ===== UTILITIES ===== */
.hidden { display: none !important; }

button {
  font-family: var(--font);
  cursor: pointer;
  border: none;
  outline: none;
  transition: all 0.2s ease;
}

input, textarea {
  font-family: var(--font);
  outline: none;
  border: none;
}

/* ===== GLASS CARD ===== */
.glass {
  background: var(--surface);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

/* ===== FACILITATOR VIEW ===== */
#facilitator-view {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  padding: 24px 32px;
  gap: 20px;
}

/* Header */
.f-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.f-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #fff 30%, var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.f-stats {
  display: flex;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.f-stats span { display: flex; align-items: center; gap: 4px; }
.f-stats .num { color: var(--text); font-weight: 600; font-variant-numeric: tabular-nums; }

/* Question Bar */
.f-question-bar {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.f-question-text {
  flex: 1;
  min-width: 200px;
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--text);
}

.f-question-bar input {
  flex: 1;
  min-width: 200px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  color: var(--text);
  font-size: 1rem;
}

.f-question-bar input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Toolbar */
.f-toolbar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: all 0.2s;
}

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

.btn-accent {
  background: var(--accent);
  color: #fff;
}
.btn-accent:hover { background: var(--accent-light); box-shadow: 0 4px 16px var(--accent-glow); }

.btn-danger {
  background: rgba(248,113,113,0.12);
  color: var(--danger);
  border: 1px solid rgba(248,113,113,0.2);
}
.btn-danger:hover { background: rgba(248,113,113,0.2); }

.btn-success {
  background: rgba(52,211,153,0.12);
  color: var(--success);
  border: 1px solid rgba(52,211,153,0.2);
}
.btn-success:hover { background: rgba(52,211,153,0.2); }

/* Main content area */
.f-main {
  flex: 1;
  display: flex;
  gap: 20px;
  min-height: 0;
}

/* Word cloud container */
.f-cloud-wrap {
  flex: 1;
  padding: 24px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  min-height: 400px;
}

#word-cloud {
  width: 100%;
  height: 100%;
  position: relative;
}

.wc-empty {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--text-muted);
  font-size: 1.1rem;
}

.wc-empty-icon {
  font-size: 3rem;
  opacity: 0.3;
}

/* Word items */
.wc-word {
  position: absolute;
  white-space: nowrap;
  cursor: default;
  transition: transform 0.4s cubic-bezier(0.22,1,0.36,1), opacity 0.4s ease;
  font-weight: 600;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
  user-select: none;
  opacity: 0;
  transform: scale(0.5);
}

.wc-word.visible {
  opacity: 1;
  transform: scale(1);
}

.wc-word:hover {
  transform: scale(1.08) !important;
  filter: brightness(1.2);
}

/* Sidebar */
.f-sidebar {
  width: 260px;
  flex-shrink: 0;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow-y: auto;
}

.f-qr-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

#qr-canvas {
  border-radius: var(--radius-sm);
  background: #fff;
  padding: 10px;
}

.f-join-url {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-align: center;
  word-break: break-all;
  font-family: var(--mono);
}

.f-join-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
}

.f-room-code {
  font-family: var(--mono);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent-light);
  text-align: center;
  letter-spacing: 0.15em;
}

/* List view */
.f-list-view {
  max-height: 300px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.f-list-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 0.85rem;
  background: rgba(255,255,255,0.03);
}

.f-list-item .word { font-weight: 500; }
.f-list-item .count {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--accent-light);
  font-weight: 600;
}

/* View toggle */
.f-view-toggle {
  display: flex;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
}

.f-view-toggle button {
  flex: 1;
  padding: 6px 12px;
  font-size: 0.78rem;
  background: transparent;
  color: var(--text-muted);
  border: none;
}

.f-view-toggle button.active {
  background: var(--accent);
  color: #fff;
}

/* Fullscreen */
.fullscreen-active #facilitator-view {
  padding: 32px 48px;
}

.fullscreen-active .f-cloud-wrap {
  min-height: 70vh;
}

/* ===== PARTICIPANT VIEW ===== */
#participant-view {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.p-card {
  width: 100%;
  max-width: 420px;
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  text-align: center;
}

.p-badge {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-light);
  background: rgba(108,99,255,0.12);
  padding: 4px 12px;
  border-radius: 20px;
}

.p-question {
  font-size: 1.3rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text);
}

.p-input-wrap {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.p-input {
  width: 100%;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.06);
  border: 1.5px solid var(--border);
  color: var(--text);
  font-size: 1.1rem;
  text-align: center;
  transition: all 0.2s;
}

.p-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

.p-input::placeholder { color: var(--text-muted); }

.p-submit {
  width: 100%;
  padding: 14px;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #fff;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.p-submit:hover { background: var(--accent-light); box-shadow: 0 4px 20px var(--accent-glow); }
.p-submit:active { transform: scale(0.98); }

.p-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.p-feedback {
  font-size: 0.9rem;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  transition: all 0.3s;
}

.p-feedback.success {
  color: var(--success);
  background: rgba(52,211,153,0.1);
}

.p-feedback.error {
  color: var(--danger);
  background: rgba(248,113,113,0.1);
}

.p-feedback.info {
  color: var(--accent-light);
  background: rgba(108,99,255,0.1);
}

.p-locked {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.p-history {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
}

.p-history-tag {
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 20px;
  background: rgba(255,255,255,0.06);
  color: var(--text-muted);
}

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal {
  width: 100%;
  max-width: 440px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.modal h3 {
  font-size: 1.1rem;
  font-weight: 600;
}

.modal input {
  width: 100%;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 1rem;
}

.modal-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  #facilitator-view { padding: 16px; }

  .f-main {
    flex-direction: column;
  }

  .f-sidebar {
    width: 100%;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
  }

  .f-cloud-wrap { min-height: 300px; }
  .f-toolbar { justify-content: center; }

  .f-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

/* ===== TOAST ===== */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  z-index: 200;
  animation: toastIn 0.3s ease, toastOut 0.3s ease 2.5s forwards;
}

@keyframes toastIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
@keyframes toastOut { from { opacity: 1; } to { opacity: 0; } }

/* ===== FOOTER ===== */
.site-footer {
  text-align: center;
  padding: 16px;
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}