/* ============================================================
   style.css — Spelling Dictee NL
   ============================================================ */

/* ── Reset & base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #f0f2f5;
  --card:      #ffffff;
  --border:    #dde1e7;
  --text:      #1a1a2e;
  --muted:     #6b7280;
  --accent:    #2563eb;
  --accent-h:  #1d4ed8;
  --success:   #16a34a;
  --warn:      #d97706;
  --danger:    #dc2626;
  --radius:    12px;
  --shadow:    0 2px 12px rgba(0,0,0,.08);
  --shadow-lg: 0 4px 24px rgba(0,0,0,.12);
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

/* ── Header ──────────────────────────────────────────────── */
header {
  background: var(--text);
  color: #fff;
  padding: .75rem 1.25rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,.25);
}

.header-inner {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.header-inner h1 {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -.02em;
  white-space: nowrap;
}

.mode-toggle {
  display: flex;
  gap: .35rem;
  flex: 1;
}

.mode-btn {
  flex: 1;
  padding: .4rem .75rem;
  border: 2px solid rgba(255,255,255,.25);
  border-radius: 8px;
  background: transparent;
  color: rgba(255,255,255,.7);
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .15s;
  white-space: nowrap;
}
.mode-btn:hover  { border-color: rgba(255,255,255,.6); color: #fff; }
.mode-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

#session-stats {
  font-size: .8rem;
  color: rgba(255,255,255,.65);
  white-space: nowrap;
  margin-left: auto;
}

/* ── Main layout ─────────────────────────────────────────── */
main {
  max-width: 760px;
  margin: 0 auto;
  padding: 1.25rem 1rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* ── Settings bar ────────────────────────────────────────── */
.settings-bar {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .875rem 1rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
  box-shadow: var(--shadow);
}

.topic-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
}

.topic-btn {
  padding: .3rem .7rem;
  border-radius: 6px;
  border: 1.5px solid var(--border);
  background: transparent;
  color: var(--muted);
  font-size: .8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .15s;
}
.topic-btn:hover  { border-color: var(--accent); color: var(--accent); }
.topic-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.settings-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.speed-control {
  display: flex;
  align-items: center;
  gap: .5rem;
  flex: 1;
}
.speed-control label { font-size: .8rem; color: var(--muted); white-space: nowrap; }
#rate-slider {
  flex: 1;
  min-width: 80px;
  accent-color: var(--accent);
  cursor: pointer;
}
#rate-label {
  font-size: .85rem;
  font-weight: 700;
  color: var(--accent);
  min-width: 36px;
}

.source-toggle {
  display: flex;
  gap: .35rem;
}
.source-btn {
  padding: .3rem .65rem;
  border-radius: 6px;
  border: 1.5px solid var(--border);
  background: transparent;
  color: var(--muted);
  font-size: .78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .15s;
}
.source-btn:hover  { border-color: var(--accent); color: var(--accent); }
.source-btn.active { background: #eff6ff; border-color: var(--accent); color: var(--accent); }

/* ── Exercise card ───────────────────────────────────────── */
.exercise-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-header {
  padding: .75rem 1.1rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: .75rem;
  background: #fafbfd;
}

.topic-badge {
  display: inline-block;
  padding: .2rem .65rem;
  border-radius: 20px;
  background: var(--muted);
  color: #fff;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .03em;
  text-transform: uppercase;
}

#zin-counter {
  font-size: .8rem;
  color: var(--muted);
  margin-left: auto;
}

/* ── Play zone ────────────────────────────────────────────── */
#play-zone { padding: 1.1rem; }

.play-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .5rem;
  margin-bottom: 1rem;
}

.btn-play {
  padding: .75rem .5rem;
  border-radius: 8px;
  border: 2px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-size: .88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .15s;
  text-align: left;
  display: flex;
  align-items: center;
  gap: .4rem;
}
.btn-play:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); background: #f0f7ff; }
.btn-play:disabled              { opacity: .4; cursor: not-allowed; }
.btn-play.btn-active            { border-color: var(--accent); background: #eff6ff; color: var(--accent); animation: pulse-border .8s ease infinite; }
.btn-play.btn-done              { border-color: #86efac; background: #f0fdf4; color: var(--success); }
#btn-stop.btn-active            { border-color: #ef4444; background: #fef2f2; color: #b91c1c; }

@keyframes pulse-border {
  0%, 100% { box-shadow: 0 0 0 0 rgba(37,99,235,.3); }
  50%       { box-shadow: 0 0 0 4px rgba(37,99,235,.15); }
}

/* ── Input zone ───────────────────────────────────────────── */
#input-zone { margin-bottom: 1rem; }

#user-input {
  width: 100%;
  padding: .75rem 1rem;
  border: 2px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  line-height: 1.6;
  resize: vertical;
  min-height: 80px;
  transition: border-color .15s;
}
#user-input:focus { outline: none; border-color: var(--accent); }

/* ── Primary / action buttons ─────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .65rem 1.25rem;
  border-radius: 8px;
  border: none;
  font-size: .92rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .15s;
}
.btn:disabled { opacity: .4; cursor: not-allowed; }

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover:not(:disabled) { background: var(--accent-h); }

.btn-controleer {
  background: #1a1a2e;
  color: #fff;
  width: 100%;
  justify-content: center;
  font-size: 1rem;
  padding: .75rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  font-weight: 700;
  transition: all .15s;
}
.btn-controleer:hover:not(:disabled) { background: #2d2d4a; }
.btn-controleer:disabled { opacity: .4; cursor: not-allowed; }

.card-actions { padding: 0 1.1rem 1.1rem; }

/* ── Start button ─────────────────────────────────────────── */
.start-zone {
  padding: 2rem 1.1rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}
.start-zone p { color: var(--muted); }

.btn-start-main {
  background: var(--accent);
  color: #fff;
  font-size: 1.1rem;
  font-weight: 700;
  padding: .85rem 2.5rem;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  transition: all .15s;
  box-shadow: 0 4px 12px rgba(37,99,235,.25);
}
.btn-start-main:hover { background: var(--accent-h); transform: translateY(-1px); }

/* ── Reveal zone ──────────────────────────────────────────── */
.reveal-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 1.25rem;
  display: none;
  animation: slide-in .2s ease;
}

@keyframes slide-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.reveal-label {
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--muted);
  margin-bottom: .5rem;
}

#sentence-display {
  font-size: 1.35rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
  display: block;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

/* ── Score badge ──────────────────────────────────────────── */
#score-zone { margin-bottom: .75rem; }

.score-badge {
  display: inline-block;
  padding: .4rem 1rem;
  border-radius: 20px;
  font-size: 1.1rem;
  font-weight: 800;
}
.score-perfect { background: #dcfce7; color: var(--success); }
.score-ok       { background: #fef9c3; color: #854d0e; }
.score-bad      { background: #fee2e2; color: var(--danger); }

/* ── Error / rules list ───────────────────────────────────── */
#error-zone { margin-bottom: 1rem; }

.error-list, .rules-list {
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.error-item {
  padding: .6rem .875rem;
  border-radius: 8px;
  border-left: 3px solid transparent;
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  gap: .15rem .5rem;
  align-items: start;
}
.err-werkwoord { background: #fff1f2; border-left-color: var(--danger); }
.err-andere    { background: #fff7ed; border-left-color: var(--warn); }

.err-words   { font-size: .9rem; grid-column: 1; }
.err-penalty { font-weight: 800; font-size: .88rem; color: var(--danger); grid-column: 2; grid-row: 1; align-self: center; }
.err-rule    { font-size: .8rem; color: var(--muted); grid-column: 1 / -1; font-style: italic; margin-top: .1rem; }

.rule-item {
  padding: .55rem .875rem;
  background: #f0f7ff;
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  display: flex;
  gap: .75rem;
  align-items: baseline;
  flex-wrap: wrap;
}
.rule-word { font-weight: 700; font-size: .92rem; color: var(--accent); white-space: nowrap; }
.rule-text { font-size: .85rem; color: var(--muted); }

/* ── Reveal actions ───────────────────────────────────────── */
.reveal-actions {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  align-items: center;
}

#btn-next {
  background: var(--accent);
  color: #fff;
  padding: .65rem 1.5rem;
  border-radius: 8px;
  border: none;
  font-size: .95rem;
  font-weight: 700;
  cursor: pointer;
  transition: all .15s;
}
#btn-next:hover { background: var(--accent-h); }

#btn-generate {
  background: transparent;
  border: 2px solid var(--border);
  color: var(--muted);
  padding: .6rem 1rem;
  border-radius: 8px;
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .15s;
}
#btn-generate:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
#btn-generate:disabled { opacity: .4; cursor: not-allowed; }

/* ── Keyboard hints ───────────────────────────────────────── */
.kbd-hints {
  font-size: .75rem;
  color: var(--muted);
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  padding: .5rem 0 0;
  border-top: 1px solid var(--border);
  margin-top: 1rem;
}
kbd {
  display: inline-block;
  padding: .1rem .35rem;
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 4px;
  font-size: .72rem;
  font-family: monospace;
  background: #f8f9fa;
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 520px) {
  .play-buttons      { grid-template-columns: 1fr; }
  .header-inner h1   { font-size: 1rem; }
  .mode-btn          { padding: .35rem .5rem; font-size: .78rem; }
  #sentence-display  { font-size: 1.15rem; }
  .settings-row      { flex-direction: column; align-items: stretch; }
}