/* ===============================
   MusicTools — Spotify-like UI
   =============================== */

:root {
  --bg: #0A0A0A;
  --bg-elev: #121212;
  --bg-card: #181818;
  --bg-card-2: #1F1F1F;
  --bg-input: #2A2A2A;
  --bg-input-hover: #3A3A3A;

  --border: #232323;
  --divider: #1F1F1F;

  --green: #1DB954;
  --green-hover: #1ED760;
  --green-press: #169B46;
  --green-dim: #0F3B22;

  --blue: #509BF5;
  --blue-hover: #6FB1F7;
  --blue-dim: #1A2F4A;

  --purple: #A855F7;
  --purple-hover: #C084FC;
  --purple-dim: #2D1B4D;

  --pink: #EC4899;
  --pink-hover: #F472B6;
  --pink-dim: #831843;

  --amber: #F59E0B;
  --amber-hover: #FBBF24;
  --amber-dim: #78350F;

  --rec-red: #EF4444;
  --rec-red-hover: #F87171;
  --rec-red-dim: #7F1D1D;

  --red: #E22134;
  --red-hover: #FF4055;

  --text: #FFFFFF;
  --text-2: #B3B3B3;
  --text-3: #727272;

  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 14px;
  --r-pill: 999px;

  --shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.7);
}

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

html, body {
  height: 100%;
  width: 100%;
  overflow: hidden;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  user-select: none;
}

button, input, select, textarea { font-family: inherit; font-size: inherit; }

/* ===============================
   LAYOUT
   =============================== */
.app {
  display: grid;
  grid-template-columns: 240px 1fr;
  height: 100vh;
}

/* ===============================
   SIDEBAR
   =============================== */
.sidebar {
  background: var(--bg-elev);
  display: flex;
  flex-direction: column;
  padding: 24px 12px;
  border-right: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 8px;
  margin-bottom: 20px;
}

.brand-logo {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--green), var(--green-press));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 900;
  color: #000;
  box-shadow: 0 4px 12px rgba(29, 185, 84, 0.35);
}

.brand-name {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.2px;
}

.divider {
  height: 1px;
  background: var(--divider);
  margin: 0 8px 16px;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  border: none;
  background: transparent;
  color: var(--text-2);
  cursor: pointer;
  border-radius: var(--r-sm);
  font-size: 14px;
  font-weight: 700;
  text-align: left;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.nav-item:hover {
  background: #1A1A1A;
  color: var(--text);
}

.nav-item.active {
  background: #1F1F1F;
  color: var(--green);
}

.nav-icon {
  font-size: 16px;
  width: 20px;
  text-align: center;
}

.footer {
  text-align: center;
  padding-top: 16px;
  border-top: 1px solid var(--divider);
}

.footer-by {
  color: var(--green);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.4px;
}

.footer-version {
  color: var(--text-3);
  font-size: 11px;
  margin-top: 2px;
}

/* ===============================
   MAIN
   =============================== */
.main {
  overflow-y: auto;
  padding: 24px 32px 32px;
  scroll-behavior: smooth;
}

.view {
  display: none;
  animation: fadeIn 0.25s ease both;
}

.view.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ===============================
   HERO
   =============================== */
.hero {
  position: relative;
  border-radius: var(--r-lg);
  padding: 28px 32px;
  margin-bottom: 24px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.hero-green {
  background: linear-gradient(135deg, #16893E 0%, #0F3B22 60%, #062614 100%);
}

.hero-blue {
  background: linear-gradient(135deg, #2D4D7A 0%, #1A2F4A 60%, #0D1A2B 100%);
}

.hero-purple {
  background: linear-gradient(135deg, #5D2C9C 0%, #2D1B4D 60%, #1A0F2E 100%);
}

.hero-pink {
  background: linear-gradient(135deg, #EC4899 0%, #831843 60%, #3F0A23 100%);
}

.hero-amber {
  background: linear-gradient(135deg, #F59E0B 0%, #78350F 60%, #3B1E07 100%);
}

.hero-red {
  background: linear-gradient(135deg, #DC2626 0%, #7F1D1D 60%, #3F0A0A 100%);
}

.hero-content { position: relative; z-index: 2; max-width: 70%; }

.hero-eyebrow {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1.5px;
  color: var(--green);
  margin-bottom: 6px;
}

.hero-eyebrow.blue { color: var(--blue); }
.hero-eyebrow.purple { color: var(--purple); }
.hero-eyebrow.pink { color: var(--pink-hover); }
.hero-eyebrow.amber { color: var(--amber-hover); }
.hero-eyebrow.red { color: var(--rec-red-hover); }

.hero-title {
  font-size: 36px;
  font-weight: 900;
  letter-spacing: -0.8px;
  line-height: 1.1;
  margin-bottom: 8px;
}

.hero-subtitle {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 500;
}

.hero-deco {
  position: absolute;
  right: -10px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 180px;
  font-weight: 900;
  opacity: 0.08;
  line-height: 1;
  user-select: none;
  pointer-events: none;
}

/* ===============================
   SECTION LABELS
   =============================== */
.section-label {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1.2px;
  color: var(--text-3);
  text-transform: uppercase;
  margin: 8px 4px 10px;
}

/* ===============================
   CARDS
   =============================== */
.card {
  background: var(--bg-card);
  border-radius: var(--r-md);
  padding: 18px 20px;
  margin-bottom: 18px;
  transition: background-color 0.2s ease;
}

.card-accent-purple {
  background: linear-gradient(180deg, #1F1532 0%, #181818 80%);
  border: 1px solid rgba(168, 85, 247, 0.2);
}

.card.actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.log-card {
  padding: 12px;
}

/* ===============================
   FIELDS
   =============================== */
.field { margin-bottom: 14px; }
.field:last-child { margin-bottom: 0; }

.field.inline {
  display: flex;
  align-items: center;
  gap: 14px;
}
.field.inline .field-label { margin-bottom: 0; }

.field-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin-bottom: 8px;
}

.row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.row.gap { gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.row.spread { justify-content: space-between; }

.badge {
  background: rgba(29, 185, 84, 0.15);
  color: var(--green);
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 700;
}

/* ===============================
   INPUTS
   =============================== */
.input {
  width: 100%;
  background: var(--bg-input);
  color: var(--text);
  border: 1px solid transparent;
  padding: 10px 16px;
  border-radius: var(--r-sm);
  outline: none;
  transition: background-color 0.15s, border-color 0.15s;
}

.input.pill { border-radius: var(--r-pill); }

.input::placeholder { color: var(--text-3); }

.input:focus {
  background: #333;
  border-color: rgba(29, 185, 84, 0.4);
}

.input-sm { max-width: 200px; }

select.input {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'><path fill='%23B3B3B3' d='M2 4l4 4 4-4z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 12px;
  padding-right: 36px;
}

input[type="number"] { -moz-appearance: textfield; }
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.path-display {
  flex: 1;
  background: var(--bg-input);
  color: var(--text);
  padding: 10px 16px;
  border-radius: var(--r-pill);
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.path-display:empty,
.path-display.empty { color: var(--text-3); }

/* ===============================
   BUTTONS
   =============================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  cursor: pointer;
  padding: 10px 22px;
  font-weight: 700;
  border-radius: var(--r-sm);
  white-space: nowrap;
  transition: transform 0.06s ease, background-color 0.15s, color 0.15s;
}

.btn.pill { border-radius: var(--r-pill); }
.btn.btn-sm { padding: 8px 16px; font-size: 12px; }
.btn.btn-lg { padding: 14px 32px; font-size: 14px; }

.btn:active { transform: scale(0.96); }
.btn:disabled { cursor: not-allowed; opacity: 0.4; }
.btn:not(:disabled):hover { filter: brightness(1.06); }

.btn-primary {
  background: var(--green);
  color: #000;
}

.btn-primary:not(:disabled):hover {
  background: var(--green-hover);
  transform: scale(1.02);
}

.btn-blue {
  background: var(--blue);
  color: #fff;
}

.btn-purple {
  background: var(--purple);
  color: #fff;
}

.btn-pink {
  background: var(--pink);
  color: #fff;
}

.btn-amber {
  background: var(--amber);
  color: #000;
}

.btn-red {
  background: var(--rec-red);
  color: #fff;
}

.btn-red.recording {
  animation: pulseRed 1.2s ease-in-out infinite;
}

@keyframes pulseRed {
  0%, 100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.6); }
  50% { box-shadow: 0 0 0 8px rgba(239, 68, 68, 0); }
}

.btn-success {
  background: #00CEC9;
  color: #000;
  margin-top: 8px;
}

.btn-danger {
  background: transparent;
  color: var(--red);
  border: 1px solid var(--red);
}

.btn-danger:not(:disabled):hover {
  background: var(--red);
  color: #fff;
}

.btn-ghost {
  background: var(--bg-input);
  color: var(--text);
}

.btn-ghost:not(:disabled):hover {
  background: var(--bg-input-hover);
}

.ico {
  font-size: 12px;
  line-height: 1;
}

/* ===============================
   COUNTER / PROGRESS
   =============================== */
.counter {
  color: var(--text-2);
  font-size: 13px;
  font-weight: 600;
  margin-left: auto;
}

.progress-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.micro-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.8px;
  color: var(--text-2);
  text-transform: uppercase;
}

.percent {
  font-size: 14px;
  font-weight: 800;
}

.percent.green { color: var(--green); }
.percent.blue { color: var(--blue); }
.percent.pink { color: var(--pink-hover); }

.progress {
  width: 100%;
  height: 6px;
  background: var(--bg-input);
  border-radius: 3px;
  overflow: hidden;
}

.progress-fill {
  width: 0%;
  height: 100%;
  border-radius: 3px;
  transition: width 0.2s ease-out;
}

.progress-fill.green {
  background: linear-gradient(90deg, var(--green), var(--green-hover));
}

.progress-fill.blue {
  background: linear-gradient(90deg, var(--blue), var(--blue-hover));
}

.progress-fill.pink {
  background: linear-gradient(90deg, var(--pink), var(--pink-hover));
}

/* ===============================
   LOG BOX
   =============================== */
.log {
  background: var(--bg-card-2);
  border-radius: var(--r-sm);
  padding: 14px 16px;
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 12px;
  color: var(--text-2);
  height: 220px;
  overflow-y: auto;
  white-space: pre-wrap;
  user-select: text;
  line-height: 1.6;
}

.log .l-ok { color: var(--green); }
.log .l-err { color: var(--red); }
.log .l-info { color: var(--blue); }
.log .l-warn { color: #FDCB6E; }
.log .l-muted { color: var(--text-3); }

/* ===============================
   SEGMENTED CONTROL
   =============================== */
.segmented {
  display: inline-flex;
  background: var(--bg-input);
  padding: 4px;
  border-radius: var(--r-pill);
  gap: 2px;
}

.seg-btn {
  border: none;
  background: transparent;
  color: var(--text-2);
  padding: 8px 18px;
  border-radius: var(--r-pill);
  cursor: pointer;
  font-weight: 700;
  font-size: 13px;
  transition: background-color 0.15s, color 0.15s;
}

.seg-btn:hover:not(.active) { color: var(--text); }

.seg-btn.active {
  background: var(--pink);
  color: #fff;
}

/* ===============================
   HINT BOX
   =============================== */
.hint {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: 4px;
  padding: 12px 14px;
  background: rgba(236, 72, 153, 0.08);
  border: 1px solid rgba(236, 72, 153, 0.2);
  border-radius: var(--r-sm);
  color: var(--text-2);
  font-size: 12.5px;
  line-height: 1.55;
}

.hint-ico {
  color: var(--pink-hover);
  font-size: 14px;
  font-weight: 800;
  margin-top: 1px;
}

.hint strong { color: var(--text); font-weight: 700; }

.hint code {
  background: rgba(255, 255, 255, 0.08);
  padding: 1px 6px;
  border-radius: 4px;
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 11.5px;
  color: var(--text);
}

.hint a {
  color: var(--green-hover);
  text-decoration: none;
  font-weight: 700;
}

.hint a:hover { text-decoration: underline; }

/* ===============================
   CHECKBOX
   =============================== */
.checkbox {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  margin: 6px 0 14px;
  user-select: none;
}

.checkbox input { display: none; }

.check-box {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  background: var(--bg-input);
  border: 1px solid var(--bg-input-hover);
  position: relative;
  transition: background-color 0.15s, border-color 0.15s;
}

.checkbox input:checked + .check-box {
  background: var(--blue);
  border-color: var(--blue);
}

.checkbox input:checked + .check-box::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 11px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* ===============================
   INFO ROW (Upgrade tab)
   =============================== */
.info-row {
  color: var(--green);
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 14px;
  min-height: 18px;
}

/* ===============================
   SETTINGS
   =============================== */
.version-line {
  color: var(--text-2);
  font-size: 13px;
}

.strong { color: var(--text); font-weight: 700; }

.update-status {
  font-size: 13px;
  font-weight: 600;
  margin-top: 12px;
  min-height: 18px;
}

.update-status.ok { color: var(--green); }
.update-status.warn { color: #FDCB6E; }
.update-status.err { color: var(--red); }

.update-notes {
  color: var(--text-3);
  font-size: 12px;
  margin-top: 8px;
  white-space: pre-line;
}

.save-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 20px 0 32px;
}

.save-status {
  color: var(--green);
  font-weight: 700;
  font-size: 13px;
  opacity: 0;
  transition: opacity 0.25s;
}

.save-status.show { opacity: 1; }

/* ===============================
   MODAL
   =============================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  animation: fadeIn 0.18s ease both;
}

.modal-backdrop[hidden] { display: none; }

.modal {
  background: var(--bg-card);
  border-radius: var(--r-lg);
  width: min(560px, calc(100% - 40px));
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  border-bottom: 1px solid var(--divider);
}

.modal-head h2 {
  font-size: 17px;
  font-weight: 800;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-2);
  font-size: 26px;
  cursor: pointer;
  line-height: 1;
  padding: 0 6px;
}

.modal-close:hover { color: var(--text); }

.modal-body {
  padding: 18px 22px;
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 13px;
  color: var(--text-2);
  white-space: pre-wrap;
  overflow-y: auto;
  line-height: 1.6;
  user-select: text;
  flex: 1;
}

.modal-foot {
  display: flex;
  gap: 10px;
  padding: 14px 22px;
  border-top: 1px solid var(--divider);
}

/* ===============================
   TOAST
   =============================== */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translate(-50%, 100px);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 14px 22px;
  border-radius: var(--r-pill);
  font-weight: 600;
  font-size: 13px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transition: transform 0.3s cubic-bezier(0.2, 0.7, 0.3, 1), opacity 0.3s;
  z-index: 300;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.toast.toast-error { border-color: var(--red); color: var(--red); }
.toast.toast-success { border-color: var(--green); color: var(--green); }

/* ===============================
   SCROLLBARS (WebKit)
   =============================== */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: #404040;
  border-radius: 5px;
  border: 2px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover { background: #606060; }

.log::-webkit-scrollbar-thumb { border-color: var(--bg-card-2); }
.main::-webkit-scrollbar-thumb { border-color: var(--bg); }

/* ===============================
   METADATA EDITOR
   =============================== */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 18px;
}

.form-grid .field { margin-bottom: 0; }
.form-grid .field.full { grid-column: 1 / -1; }

.textarea {
  border-radius: var(--r-md);
  padding: 12px 16px;
  resize: vertical;
  min-height: 70px;
  font-family: inherit;
  line-height: 1.5;
}

.meta-info {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 22px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--divider);
  color: var(--text-2);
  font-size: 12.5px;
}

.meta-info span strong {
  color: var(--text);
  font-weight: 700;
  margin-right: 6px;
}

.cover-card {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
  align-items: start;
}

.cover-preview {
  width: 180px;
  height: 180px;
  border-radius: var(--r-md);
  background: var(--bg-card-2);
  border: 1px dashed var(--bg-input-hover);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.cover-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.cover-empty {
  color: var(--text-3);
  font-size: 12px;
  text-align: center;
  padding: 0 12px;
}

.cover-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-start;
}

.cover-hint {
  color: var(--text-3);
  font-size: 12px;
  margin-top: 4px;
}

.cover-hint.set { color: var(--amber-hover); font-weight: 700; }
.cover-hint.remove { color: var(--red); font-weight: 700; }

@media (max-width: 720px) {
  .form-grid { grid-template-columns: 1fr; }
  .cover-card { grid-template-columns: 1fr; }
}

/* ===============================
   RECORDER
   =============================== */
.rec-timer {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 28px;
  font-weight: 800;
  color: var(--rec-red-hover);
  letter-spacing: 1px;
  margin-left: auto;
  min-width: 130px;
  text-align: right;
}

.rec-status {
  color: var(--text-2);
  font-size: 12.5px;
  font-weight: 600;
  margin-left: 18px;
}

.rec-result {
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  margin-top: 6px;
  word-break: break-all;
  user-select: text;
}

.rec-result .badge-dur {
  background: rgba(239, 68, 68, 0.15);
  color: var(--rec-red-hover);
  padding: 2px 10px;
  border-radius: 10px;
  font-size: 11.5px;
  font-weight: 700;
  margin-right: 10px;
}