/* ═══════════════════════════════════════════════════════════
   transcriptionMain.css  ·  Mainframe Design System v3
   ═══════════════════════════════════════════════════════════ */

:root {
  --font-heading: 'HelveticaNowDisplay-Medium','Helvetica Neue',Arial,sans-serif;
  --font-body:    'HelveticaNowDisplayW01-Rg','Helvetica Neue',Arial,sans-serif;
  --ink:          #0a0a0a;
  --ink-70:       rgba(10,10,10,0.70);
  --ink-45:       rgba(10,10,10,0.45);
  --ink-20:       rgba(10,10,10,0.20);
  --ink-10:       rgba(10,10,10,0.10);
  --ink-05:       rgba(10,10,10,0.05);
  --surface:      #f4f3ef;
  --surface-2:    #eeecea;
  --card:         #ffffff;
  --radius-pill:  9999px;
  --radius-xl:    24px;
  --radius-lg:    18px;
  --radius-md:    12px;
  --shadow-xs:    0 1px 2px rgba(0,0,0,0.06);
  --shadow-sm:    0 2px 10px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:    0 6px 28px rgba(0,0,0,0.10), 0 2px 6px rgba(0,0,0,0.05);
  --shadow-inset: inset 0 1px 0 rgba(255,255,255,0.8);
}

/* ─── Animations ─────────────────────────────────────────── */
@keyframes fade-up {
  from { opacity:0; transform:translateY(16px); }
  to   { opacity:1; transform:none; }
}
@keyframes spin { to { transform:rotate(360deg); } }

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

html {
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  background: var(--surface);
  color: var(--ink);
}

body {
  min-height: 100vh;
  background: var(--surface);
  padding: 0 20px 100px;
  font-family: var(--font-body);
  /* subtle paper grain */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.028'/%3E%3C/svg%3E");
}

/* ─── Page Layout ────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
  padding-top: 48px;
}

/* ─── Upload View ────────────────────────────────────────── */
.upload-view {
  animation: fade-up .7s cubic-bezier(.22,1,.36,1) backwards;
  animation-delay: .05s;
}

/* ── Section label above heading ── */
.upload-view::before {
  content: '✦  Powered by Whisper AI';
  display: block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-45);
  margin-bottom: 14px;
  padding: 6px 14px;
  background: var(--card);
  border: 1px solid var(--ink-10);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-xs);
  display: inline-block;
}

/* ─── Page Heading ───────────────────────────────────────── */
.upload-view h1 {
  font-family: var(--font-heading);
  font-size: clamp(32px, 6vw, 52px);
  font-weight: 500;
  letter-spacing: -0.05em;
  line-height: 1.0;
  color: var(--ink);
  margin-bottom: 12px;
}

/* ─── Subtitle ───────────────────────────────────────────── */
.subtitle {
  font-size: 14px;
  color: var(--ink-45);
  line-height: 1.6;
  margin-bottom: 36px;
  max-width: 400px;
}

/* ─── Drop Zone ──────────────────────────────────────────── */
.upload-area {
  background: var(--card);
  border: 1.5px dashed var(--ink-20);
  border-radius: var(--radius-xl);
  padding: 0;
  cursor: pointer;
  margin-bottom: 16px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm), var(--shadow-inset);
  transition:
    border-color .25s ease,
    box-shadow   .25s ease,
    transform    .25s cubic-bezier(.22,1,.36,1);
}

/* Dashed border via gradient trick for rounded corners */
.upload-area::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(ellipse 70% 55% at 50% -10%,
    rgba(10,10,10,0.04) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* Inner content wrapper */
.upload-area > :not(.file-input) {
  position: relative;
  z-index: 1;
}

/* Actual click target padding */
.upload-area {
  padding: 52px 32px 44px;
  text-align: center;
}

.upload-area:hover,
.upload-area.dragover {
  border-color: var(--ink-45);
  box-shadow: var(--shadow-md), var(--shadow-inset);
  transform: translateY(-3px);
}

.upload-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  background: var(--surface-2);
  border: 1px solid var(--ink-10);
  box-shadow: var(--shadow-xs);
  margin-bottom: 16px;
  font-size: 18px;
  color: var(--ink-45);
  line-height: 1;
}

.upload-area h3 {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
  color: var(--ink);
}

.upload-area p {
  font-size: 12px;
  color: var(--ink-45);
  line-height: 1.55;
  max-width: 300px;
  margin: 0 auto;
}

.file-input { display:none; }

/* ─── Controls Card ──────────────────────────────────────── */
/* Wrap language + model in a subtle grouped container */
.language-select,
.model-select {
  animation: fade-up .7s cubic-bezier(.22,1,.36,1) backwards;
}

/* ─── Language Pills ─────────────────────────────────────── */
.language-select {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
  animation-delay: .18s;
  padding: 14px 16px;
  background: var(--card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--ink-10);
  box-shadow: var(--shadow-xs);
}

.language-select::before {
  content: 'Ngôn ngữ';
  display: block;
  width: 100%;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--ink-45);
  margin-bottom: 8px;
}

.language-select label {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  letter-spacing: -0.01em;
  color: var(--ink-70);
  background: var(--surface);
  border: 1px solid var(--ink-10);
  border-radius: var(--radius-pill);
  padding: 5px 16px;
  cursor: pointer;
  box-shadow: var(--shadow-xs);
  transition: background .18s, color .18s, border-color .18s, box-shadow .18s;
  user-select: none;
  white-space: nowrap;
}

.language-select label:hover {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
  box-shadow: var(--shadow-sm);
}

.language-select input[type="radio"] {
  accent-color: var(--ink);
  width: 13px; height: 13px;
  cursor: pointer;
}

/* ─── Model Row ──────────────────────────────────────────── */
.model-select {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
  animation-delay: .24s;
  padding: 12px 16px;
  background: var(--card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--ink-10);
  box-shadow: var(--shadow-xs);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--ink-45);
}

.model-select select {
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--ink-10);
  background: var(--surface);
  color: var(--ink);
  font-size: 13px;
  font-family: var(--font-body);
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  box-shadow: var(--shadow-xs);
  transition: border-color .18s, box-shadow .18s;
  flex: 1;
}

.model-select select:focus {
  outline: none;
  border-color: var(--ink-45);
  box-shadow: 0 0 0 3px rgba(10,10,10,.07);
}

.model-select select option { background:#fff; color:#000; }

/* ─── File Info ──────────────────────────────────────────── */
.file-info {
  background: var(--card);
  border: 1px solid var(--ink-10);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  margin-bottom: 14px;
  font-size: 12px;
  color: var(--ink-45);
  line-height: 1.8;
  word-break: break-all;
  display: none;
  box-shadow: var(--shadow-xs);
}

/* ─── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 9px 24px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-family: var(--font-body);
  letter-spacing: -0.01em;
  cursor: pointer;
  border: 1px solid var(--ink-10);
  text-decoration: none;
  white-space: nowrap;
  background: var(--card);
  color: var(--ink);
  box-shadow: var(--shadow-xs), var(--shadow-inset);
  margin: 0 5px 5px 0;
  position: relative;
  overflow: hidden;
  transition:
    background  .2s ease,
    color       .2s ease,
    border-color .2s ease,
    box-shadow  .2s ease,
    transform   .18s cubic-bezier(.22,1,.36,1);
}

.btn:hover:not(:disabled) {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.btn:active:not(:disabled) {
  transform: scale(.97) translateY(0);
  box-shadow: var(--shadow-xs);
}

.btn:disabled { opacity:.35; cursor:not-allowed; }

.btn-outline {
  background: transparent;
  box-shadow: none;
  border-color: var(--ink-20);
}
.btn-outline:hover:not(:disabled) {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
  box-shadow: var(--shadow-md);
}

/* ─── Progress Card ──────────────────────────────────────── */
.progress-container {
  margin-top: 18px;
  display: none;
  background: var(--card);
  border: 1px solid var(--ink-10);
  border-radius: var(--radius-xl);
  padding: 22px 24px 20px;
  box-shadow: var(--shadow-sm), var(--shadow-inset);
  animation: fade-up .5s cubic-bezier(.22,1,.36,1) backwards;
}

.progress-container h3 {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-45);
  margin-bottom: 16px;
}

.progress-bar {
  width:100%; height:2px;
  background: var(--ink-05);
  border-radius:99px;
  overflow:hidden;
  margin-bottom:6px;
}
.progress-fill {
  height:100%;
  background: var(--ink);
  width:0%;
  border-radius:99px;
  transition: width .45s cubic-bezier(.22,1,.36,1);
}
.upload-progress-bar {
  width:100%; height:2px;
  background: var(--ink-05);
  border-radius:99px;
  overflow:hidden;
  margin:10px 0 4px;
}
.upload-progress-fill {
  height:100%;
  background: var(--ink-45);
  width:0%;
  border-radius:99px;
  transition: width .45s cubic-bezier(.22,1,.36,1);
}
.progress-text {
  font-size:11px;
  color:var(--ink-45);
  margin-top:6px;
  letter-spacing:.01em;
}

/* ─── Result ─────────────────────────────────────────────── */
.result-area {
  margin-top:22px;
  display:none;
  animation: fade-up .5s cubic-bezier(.22,1,.36,1) backwards;
}
.result-label {
  font-size:10px;
  font-weight:700;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--ink-45);
  margin-bottom:10px;
}
.result-preview {
  background: var(--card);
  border: 1px solid var(--ink-10);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  font-size:14px;
  color:var(--ink-70);
  line-height:1.75;
  margin-bottom:14px;
  box-shadow: var(--shadow-xs);
}

/* ─── Transcript View ────────────────────────────────────── */
.transcript-view { display:none; }

.transcript-view h1 {
  font-family: var(--font-heading);
  font-size: clamp(26px, 4.5vw, 40px);
  font-weight: 500;
  letter-spacing: -0.05em;
  color: var(--ink);
  margin-bottom: 8px;
}

.meta {
  font-size: 12px;
  color: var(--ink-45);
  margin-bottom: 22px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--ink-10);
  line-height: 1.9;
}
.meta strong { color: var(--ink); font-weight: 500; }

.transcript-content {
  background: var(--card);
  border: 1px solid var(--ink-10);
  border-radius: var(--radius-xl);
  padding: 26px 28px;
  font-size:15px;
  line-height:1.9;
  white-space:pre-wrap;
  word-wrap:break-word;
  max-height:580px;
  overflow-y:auto;
  color:var(--ink-70);
  box-shadow: var(--shadow-sm), var(--shadow-inset);
  scrollbar-width:thin;
  scrollbar-color: var(--ink-10) transparent;
}
.transcript-content::-webkit-scrollbar { width:4px; }
.transcript-content::-webkit-scrollbar-track { background:transparent; }
.transcript-content::-webkit-scrollbar-thumb { background:var(--ink-10); border-radius:99px; }

.nav-buttons { display:flex; gap:6px; flex-wrap:wrap; margin-bottom:22px; }