/* NoteSmith — Nordic dark theme (mirrors sMidiX GUI palette) */

:root {
  --bg:          #181c28;
  --bg2:         #1e2230;
  --bg3:         #242a39;
  --bg4:         #2c3444;
  --card:        #20263a;
  --border:      #343c50;
  --text:        #dae0ec;
  --text-sub:    #919baf;
  --accent:      #82b6b6;
  --accent-blue: #6e94d2;
  --play:        #a3be8c;
  --stop:        #bf616a;
  --shadow:      rgba(4,5,10,0.55);
  --radius:      14px;
  --radius-sm:   8px;
  --font:        'Inter', 'Segoe UI', system-ui, sans-serif;
  --font-mono:   'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  --trans:       0.18s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 24px 16px 64px;
}

/* ── Header ─────────────────────────────────────────────────────────────── */
.header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 36px;
  margin-top: 16px;
}

.header img {
  width: 60px;
  height: 60px;
  border-radius: 14px;
  box-shadow: 0 4px 20px rgba(110,148,210,0.25);
}

.header-text h1 {
  font-size: 1.75rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.header-text p {
  font-size: 0.82rem;
  color: var(--text-sub);
  margin-top: 2px;
  letter-spacing: 0.4px;
}

/* ── Card ───────────────────────────────────────────────────────────────── */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 30px;
  width: 100%;
  max-width: 560px;
  box-shadow: 0 8px 32px var(--shadow);
}

.card + .card { margin-top: 20px; }

.card-title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-sub);
  margin-bottom: 18px;
}

/* ── Drop zone ──────────────────────────────────────────────────────────── */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 36px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--trans), background var(--trans);
  position: relative;
  background: var(--bg2);
}

.drop-zone:hover,
.drop-zone.drag-over {
  border-color: var(--accent-blue);
  background: var(--bg3);
}

.drop-zone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

.drop-zone svg { margin-bottom: 10px; opacity: 0.6; }

.drop-zone-label {
  font-size: 0.88rem;
  color: var(--text-sub);
}

.drop-zone-label strong {
  color: var(--accent-blue);
  font-weight: 600;
}

.file-name {
  margin-top: 10px;
  font-size: 0.82rem;
  color: var(--accent);
  font-family: var(--font-mono);
  display: none;
}

/* ── Form fields ────────────────────────────────────────────────────────── */
.field { margin-top: 16px; }

.field label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-sub);
  font-weight: 600;
  margin-bottom: 6px;
  letter-spacing: 0.3px;
}

.field input[type="text"],
.field input[type="number"] {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 0.88rem;
  color: var(--text);
  font-family: var(--font);
  outline: none;
  transition: border-color var(--trans);
}

.field input:focus {
  border-color: var(--accent-blue);
}

.field input::placeholder { color: var(--text-sub); opacity: 0.7; }

/* ── Toggle checkbox row ────────────────────────────────────────────────── */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 14px;
  cursor: pointer;
}

.toggle-row span {
  font-size: 0.85rem;
  color: var(--text-sub);
}

.toggle-switch {
  position: relative;
  width: 42px;
  height: 22px;
  flex-shrink: 0;
}

.toggle-switch input { display: none; }

.toggle-track {
  position: absolute;
  inset: 0;
  background: var(--bg4);
  border-radius: 11px;
  border: 1px solid var(--border);
  transition: background var(--trans);
}

.toggle-knob {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  background: var(--text-sub);
  border-radius: 50%;
  transition: transform var(--trans), background var(--trans);
}

.toggle-switch input:checked ~ .toggle-track { background: var(--accent-blue); }
.toggle-switch input:checked ~ .toggle-knob  { transform: translateX(20px); background: #fff; }

/* ── CAPTCHA ────────────────────────────────────────────────────────────── */
.captcha-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
}

.captcha-question {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 18px;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  white-space: nowrap;
  letter-spacing: 1.5px;
}

.captcha-answer {
  flex: 1;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 0.95rem;
  color: var(--text);
  outline: none;
  transition: border-color var(--trans);
}

.captcha-answer:focus { border-color: var(--accent-blue); }

.captcha-refresh {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  color: var(--text-sub);
  cursor: pointer;
  font-size: 1rem;
  transition: color var(--trans), border-color var(--trans);
}

.captcha-refresh:hover { color: var(--accent-blue); border-color: var(--accent-blue); }

/* ── Submit button ──────────────────────────────────────────────────────── */
.btn-convert {
  width: 100%;
  margin-top: 22px;
  padding: 13px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-blue) 100%);
  color: #1a1f2e;
  font-size: 0.95rem;
  font-weight: 800;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  letter-spacing: 0.6px;
  transition: opacity var(--trans), transform 0.1s;
  box-shadow: 0 4px 16px rgba(110,148,210,0.28);
}

.btn-convert:hover  { opacity: 0.88; }
.btn-convert:active { transform: scale(0.98); }
.btn-convert:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }

/* ── Status / result messages ───────────────────────────────────────────── */
.status-box {
  margin-top: 18px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  display: none;
  align-items: center;
  gap: 10px;
}

.status-box.error {
  background: rgba(191,97,106,0.12);
  border: 1px solid rgba(191,97,106,0.35);
  color: #e08a91;
  display: flex;
}

.status-box.success {
  background: rgba(163,190,140,0.12);
  border: 1px solid rgba(163,190,140,0.35);
  color: var(--play);
  display: flex;
}

.status-box.loading {
  background: rgba(110,148,210,0.10);
  border: 1px solid rgba(110,148,210,0.3);
  color: var(--accent-blue);
  display: flex;
}

/* ── Info section ───────────────────────────────────────────────────────── */
.info-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.info-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--text-sub);
  line-height: 1.5;
}

.info-list li::before {
  content: "▸";
  color: var(--accent-blue);
  flex-shrink: 0;
  margin-top: 1px;
  font-size: 0.72rem;
}

/* ── Spinner ────────────────────────────────────────────────────────────── */
@keyframes spin { to { transform: rotate(360deg); } }

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(110,148,210,0.25);
  border-top-color: var(--accent-blue);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

/* ── Footer ─────────────────────────────────────────────────────────────── */
.footer {
  margin-top: 40px;
  font-size: 0.74rem;
  color: var(--text-sub);
  opacity: 0.5;
  text-align: center;
}

/* ── How it works steps ─────────────────────────────────────────────────── */
.steps-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.steps-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.step-num {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg4);
  border: 1px solid var(--border);
  color: var(--accent-blue);
  font-size: 0.78rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.steps-list li div strong {
  font-size: 0.9rem;
  color: var(--text);
  display: block;
  margin-bottom: 3px;
}

.steps-list li div p {
  margin: 0;
  font-size: 0.82rem;
  color: var(--text-sub);
  line-height: 1.5;
}

/* ── About section ──────────────────────────────────────────────────────── */
.about-text {
  font-size: 0.85rem;
  color: var(--text-sub);
  line-height: 1.7;
  margin: 0 0 18px;
}

.about-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill {
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--accent-blue);
  background: var(--bg4);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 4px 12px;
  letter-spacing: 0.02em;
}

/* ── reCAPTCHA ──────────────────────────────────────────────────────────── */
.g-recaptcha {
  margin-top: 4px;
}

.recaptcha-placeholder {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg3);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 0.82rem;
  color: var(--text-sub);
  margin-top: 4px;
}

.recaptcha-placeholder svg {
  color: var(--accent-blue);
  flex-shrink: 0;
}

/* ── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .card { padding: 22px 18px; }
  .header-text h1 { font-size: 1.45rem; }
  .captcha-question { padding: 9px 12px; font-size: 0.9rem; }
}