/* ============================================================
   Kafanet Web — UI bileşenleri (Card, Button, Input, Badge…)
   ============================================================ */

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.05s, opacity 0.15s, background 0.15s;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; opacity: 0.92; }
.btn:active { transform: scale(0.97); }
.btn:disabled, .btn.is-loading { opacity: 0.6; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-dark    { background: var(--ink); color: #fff; }
.btn-outline { background: transparent; color: var(--ink); border: 1.5px solid var(--ink); }
.btn-soft    { background: var(--bg-alt); color: var(--ink); }
.btn-ghost   { background: transparent; color: var(--ink-soft); }
.btn-danger  { background: var(--red); color: #fff; }
.btn-sm { padding: 8px 14px; font-size: 13px; }
.btn-lg { padding: 16px 26px; font-size: 16px; }
.btn-block { display: flex; width: 100%; }
.btn .spinner {
  width: 16px; height: 16px;
  border-width: 2px;
  border-color: rgba(255,255,255,0.3);
  border-top-color: #fff;
}

/* ── Cards ───────────────────────────────────────────────── */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
}
.card-dark {
  background: var(--ink); color: #fff;
  border-radius: var(--radius-xxl);
  padding: var(--space-xxl);
}
.card-dark h1, .card-dark h2, .card-dark h3 { color: #fff; }
.card-soft {
  background: var(--accent-soft);
  border: 1px solid rgba(212, 73, 28, 0.2);
  border-radius: var(--radius-xxl);
  padding: var(--space-xl);
}
.card-clickable {
  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.15s ease;
}
.card-clickable:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ── Badges ──────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.6px;
  text-transform: uppercase;
}
.badge-ags    { background: rgba(212,73,28,0.13); color: var(--accent); }
.badge-kpss   { background: rgba(184,146,77,0.18); color: var(--gold); }
.badge-kolay  { background: rgba(90,122,58,0.15); color: var(--green); }
.badge-orta   { background: rgba(184,146,77,0.18); color: var(--gold); }
.badge-zor    { background: rgba(201,69,69,0.15); color: var(--red); }
.badge-karma  { background: var(--bg-alt); color: var(--ink-soft); }
.badge-free   { background: rgba(90,122,58,0.15); color: var(--green); }
.badge-premium { background: var(--gold); color: #fff; }
.badge-soft   { background: var(--bg-alt); color: var(--ink); }
.badge-accent { background: var(--accent-soft); color: var(--accent); }
.badge-dark   { background: var(--ink); color: #fff; }

/* ── Forms ───────────────────────────────────────────────── */
.form-group { margin-bottom: var(--space-lg); }
.form-label {
  display: block;
  font-size: 13px;
  color: var(--ink-soft);
  margin-bottom: 6px;
  font-weight: 500;
}
.form-input, .form-textarea, .form-select {
  display: block;
  width: 100%;
  padding: 14px 16px;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--ink);
  background: var(--card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color 0.15s;
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none;
  border-color: var(--ink);
}
.form-input.has-error, .form-textarea.has-error { border-color: var(--red); }
.form-textarea { min-height: 120px; resize: vertical; }
.form-help { font-size: 12px; color: var(--ink-soft); margin-top: 4px; }
.form-error { font-size: 12px; color: var(--red); margin-top: 6px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }
.form-check { display: inline-flex; align-items: center; gap: 8px; }
.form-check input { width: 18px; height: 18px; accent-color: var(--accent); }

.input-with-icon {
  position: relative;
}
.input-with-icon .form-input { padding-left: 44px; }
.input-with-icon .icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ink-soft);
  pointer-events: none;
}

/* ── Tag / Chip ─────────────────────────────────────────── */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border 0.15s;
  background: var(--card);
  color: var(--ink);
  border: 1px solid var(--border);
}
.chip:hover { border-color: var(--ink-soft); }
.chip.is-active {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}
.chip-row {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}
.chip-row::-webkit-scrollbar { display: none; }

/* ── Stats ───────────────────────────────────────────────── */
.stat {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 18px 20px;
}
.stat-label { font-size: 11px; letter-spacing: 0.6px; text-transform: uppercase; color: var(--ink-soft); font-weight: 700; }
.stat-value { font-family: var(--font-display); font-size: 30px; font-weight: 600; letter-spacing: -1px; margin-top: 4px; }
.stat-hint { font-size: 12px; color: var(--ink-soft); margin-top: 4px; }

/* ── Exam Card ───────────────────────────────────────────── */
.exam-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  display: block;
  text-decoration: none;
  color: inherit;
  transition: transform 0.1s, box-shadow 0.15s;
}
.exam-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}
.exam-card.featured { background: var(--ink); color: #fff; }
.exam-card.featured h3, .exam-card.featured .exam-meta { color: #fff; }
.exam-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}
.exam-card h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.3px;
  margin-bottom: 4px;
}
.exam-card-subtitle { font-size: 13px; color: var(--ink-soft); margin-bottom: 12px; }
.exam-card.featured .exam-card-subtitle { color: rgba(255,255,255,0.6); }
.exam-meta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--ink-soft);
  margin-bottom: 12px;
}
.exam-meta-item { display: inline-flex; align-items: center; gap: 4px; }
.exam-card-bottom { display: flex; justify-content: space-between; align-items: center; }

/* ── Deck Card ──────────────────────────────────────────── */
.deck-card {
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  color: #fff;
  text-decoration: none;
  display: block;
  transition: transform 0.1s, box-shadow 0.15s;
}
.deck-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}
.deck-card-accent { background: var(--accent); }
.deck-card-gold { background: var(--gold); }
.deck-card-ink { background: var(--ink); }
.deck-card-green { background: var(--green); }
.deck-card-emoji {
  width: 44px; height: 44px; border-radius: 50%;
  background: rgba(255,255,255,0.15);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
}
.deck-card h3 { color: #fff; font-size: 18px; }
.deck-card-progress {
  margin-top: 16px;
  height: 6px;
  background: rgba(255,255,255,0.15);
  border-radius: 3px;
  overflow: hidden;
}
.deck-card-progress-fill {
  height: 100%;
  background: #fff;
  transition: width 0.4s;
}

/* ── Progress Bar ────────────────────────────────────────── */
.progress-bar {
  height: 8px;
  background: var(--bg-alt);
  border-radius: 4px;
  overflow: hidden;
}
.progress-bar-fill {
  height: 100%;
  background: var(--accent);
  transition: width 0.5s;
}

/* ── Score Ring (CSS-only) ───────────────────────────────── */
.score-ring {
  width: 200px; height: 200px;
  border-radius: 50%;
  border: 14px solid var(--bg-alt);
  display: flex; align-items: center; justify-content: center;
  position: relative;
  margin: 0 auto;
}
.score-ring.green { border-color: var(--green); }
.score-ring.gold  { border-color: var(--gold); }
.score-ring.red   { border-color: var(--red); }
.score-ring-inner { text-align: center; }
.score-ring-value {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  letter-spacing: -1.5px;
}
.score-ring-label { font-size: 12px; color: var(--ink-soft); }

/* ── Toast ──────────────────────────────────────────────── */
.toast-container {
  position: fixed;
  top: calc(var(--header-h) + 16px);
  right: 16px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}
.toast {
  pointer-events: auto;
  background: var(--ink);
  color: #fff;
  padding: 12px 16px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  font-size: 14px;
  max-width: 360px;
  animation: toast-in 0.25s ease-out;
}
.toast.success { background: var(--green); }
.toast.error { background: var(--red); }
@keyframes toast-in {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ── Empty state ────────────────────────────────────────── */
.empty {
  text-align: center;
  padding: 48px 24px;
}
.empty-emoji { font-size: 56px; margin-bottom: 12px; }
.empty-title { font-family: var(--font-display); font-size: 22px; margin-bottom: 8px; color: var(--ink); }
.empty-desc { color: var(--ink-soft); margin-bottom: 16px; }

/* ── Avatar ─────────────────────────────────────────────── */
.avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
}
.avatar-lg { width: 84px; height: 84px; font-size: 32px; }

/* ── Section header ─────────────────────────────────────── */
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}
.section-header h2 { margin: 0; }
.section-header a { font-size: 13px; font-weight: 600; }

/* ── Question / Flashcard ──────────────────────────────── */
.question-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-xxl);
  margin-bottom: 16px;
}
.option-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: var(--card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  margin-bottom: 10px;
  transition: border 0.15s, background 0.15s;
}
.option-row:hover { border-color: var(--ink-soft); }
.option-row.selected {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.option-letter {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--bg-alt);
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-size: 13px;
  flex-shrink: 0;
}
.option-row.selected .option-letter {
  background: var(--accent);
  color: #fff;
}

/* Flashcard — 3D flip */
.flashcard {
  perspective: 1500px;
  height: 360px;
  position: relative;
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.flashcard-inner {
  position: absolute; inset: 0;
  transform-style: preserve-3d;
  transition: transform 0.6s cubic-bezier(0.4, 0.0, 0.2, 1);
  will-change: transform;
}
.flashcard:hover .flashcard-inner {
  transform: rotateY(0) translateY(-2px);
}
.flashcard.flipped .flashcard-inner,
.flashcard.flipped:hover .flashcard-inner {
  transform: rotateY(180deg);
}
.flashcard:active:not(.flipped) .flashcard-inner {
  transform: rotateY(8deg) scale(0.98);
}
.flashcard.flipped:active .flashcard-inner {
  transform: rotateY(172deg) scale(0.98);
}
.flashcard-face {
  position: absolute; inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--radius-xxl);
  padding: var(--space-xxl);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-md);
  /* Fabric/Safari için gerekli — bazı tarayıcılarda backface ortaya çıkıyor */
  -webkit-transform: translateZ(0);
}
.flashcard-front {
  background: var(--card);
  border: 1px solid var(--border);
  transform: rotateY(0deg);
}
.flashcard-back {
  background: var(--ink);
  color: #fff;
  transform: rotateY(180deg);
}

/* Rate butonları — reveal sonrası fade-in */
.rate-row {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.25s ease 0.1s, transform 0.25s ease 0.1s;
  pointer-events: none;
}
.rate-row.is-shown {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.reveal-hint-wrap {
  transition: opacity 0.2s ease;
}
.reveal-hint-wrap.is-hidden { opacity: 0; pointer-events: none; }
.flashcard-label {
  font-size: 10px;
  letter-spacing: 1px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
  text-transform: uppercase;
}
.flashcard-front .flashcard-text {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  line-height: 1.3;
}
.flashcard-back .flashcard-text {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.5px;
}
.flashcard-tap-hint {
  text-align: center;
  font-size: 12px;
  color: var(--ink-soft);
}
.flashcard-back .flashcard-tap-hint { color: rgba(255,255,255,0.55); }
.flashcard-hint {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,0.15);
  font-size: 13px;
  color: rgba(255,255,255,0.75);
  line-height: 1.5;
}

/* Liste/satır */
.list-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
}
.list-item:last-child { border-bottom: none; }
.list-item:hover { background: var(--bg-alt); text-decoration: none; }
.list-item-icon {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--bg-alt);
  display: flex; align-items: center; justify-content: center;
}
.list-item-body { flex: 1; min-width: 0; }
.list-item-title { font-weight: 600; font-size: 14px; }
.list-item-desc { font-size: 12px; color: var(--ink-soft); margin-top: 2px; }

/* Pagination */
.pagination {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 6px;
  margin-top: var(--space-xxl);
}
.pagination .page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 12px;
  border-radius: var(--radius-md);
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--ink);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.pagination .page-btn:hover {
  background: var(--bg-alt);
  border-color: var(--ink-soft);
}
.pagination .page-btn.is-active {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}
.pagination .page-btn.is-disabled {
  opacity: .45;
  pointer-events: none;
}
.pagination .page-ellipsis {
  padding: 0 4px;
  color: var(--ink-soft);
  font-size: 13px;
}
.text-center { text-align: center; }

/* Modal */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(26,22,20,0.5);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal {
  background: var(--card);
  border-radius: var(--radius-xxl);
  padding: var(--space-xxl);
  max-width: 460px;
  width: 100%;
  box-shadow: var(--shadow-lg);
}