/* ═══════════════════════════════════════════════════════════════
   WVD Download Terminal — Industrial Control Room Aesthetic
   ═══════════════════════════════════════════════════════════════ */

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

:root {
  --bg-deep: #07080c;
  --bg-base: #0c0e14;
  --bg-raised: #12151e;
  --bg-surface: #181c28;
  --bg-hover: #1e2233;

  --border-dim: #1a1e2c;
  --border-base: #252a3a;
  --border-bright: #333a50;

  --text-primary: #d8dce8;
  --text-secondary: #6b7394;
  --text-muted: #3e4563;

  --accent: #00d4aa;
  --accent-dim: rgba(0, 212, 170, 0.12);
  --accent-glow: rgba(0, 212, 170, 0.35);

  --warn: #f0a030;
  --warn-dim: rgba(240, 160, 48, 0.12);

  --success: #00d46a;
  --success-dim: rgba(0, 212, 106, 0.12);

  --danger: #ff4466;
  --danger-dim: rgba(255, 68, 102, 0.12);

  --info: #4488ff;
  --info-dim: rgba(68, 136, 255, 0.12);

  --font-display: 'Outfit', sans-serif;
  --font-mono: 'JetBrains Mono', 'Consolas', monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
}

/* ── Base ── */

body {
  font-family: var(--font-display);
  background: var(--bg-deep);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
}

::selection {
  background: var(--accent);
  color: var(--bg-deep);
}

::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-base); border-radius: 4px; }

.hidden { display: none !important; }

/* ── Scanline overlay ── */

.scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.03) 2px,
    rgba(0, 0, 0, 0.03) 4px
  );
}

/* ── Ambient glow orbs ── */

.ambient-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
}
.orb-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 212, 170, 0.06) 0%, transparent 70%);
  top: -150px;
  right: -100px;
  animation: orb-drift 20s ease-in-out infinite alternate;
}
.orb-2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(68, 136, 255, 0.04) 0%, transparent 70%);
  bottom: -100px;
  left: -80px;
  animation: orb-drift 25s ease-in-out infinite alternate-reverse;
}

@keyframes orb-drift {
  0% { transform: translate(0, 0); }
  100% { transform: translate(40px, -30px); }
}

/* ── Top bar ── */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 52px;
  background: var(--bg-base);
  border-bottom: 1px solid var(--border-dim);
  position: relative;
  z-index: 10;
}

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

.logo-mark {
  width: 32px;
  height: 32px;
  background: var(--accent-dim);
  border: 1px solid rgba(0, 212, 170, 0.2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

.logo-text {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 2px;
  color: var(--text-primary);
}

.logo-divider {
  width: 1px;
  height: 18px;
  background: var(--border-base);
}

.logo-sub {
  font-size: 12px;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
}

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

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.sys-status {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 1.5px;
  color: var(--accent);
}

.lang-select {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  background: var(--bg-raised);
  border: 1px solid var(--border-base);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  padding: 5px 8px;
  cursor: pointer;
  outline: none;
  transition: border-color 0.2s;
  -webkit-appearance: none;
  appearance: none;
}
.lang-select:hover,
.lang-select:focus {
  border-color: var(--accent);
  color: var(--text-primary);
}
.lang-select option {
  background: var(--bg-surface);
  color: var(--text-primary);
}

/* ── Main container ── */

.main-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  position: relative;
  z-index: 1;
}

/* ── Waiting screen ── */

.waiting-screen {
  text-align: center;
  max-width: 440px;
  animation: fade-up 0.6s ease-out;
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Radar */
.radar-container {
  width: 160px;
  height: 160px;
  margin: 0 auto 32px;
  position: relative;
}

.radar-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--border-dim);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}
.ring-1 { width: 160px; height: 160px; }
.ring-2 { width: 110px; height: 110px; border-color: var(--border-base); }
.ring-3 { width: 60px; height: 60px; border-color: var(--border-bright); }

.radar-sweep {
  position: absolute;
  width: 80px;
  height: 80px;
  top: 50%; left: 50%;
  transform-origin: 0 0;
  background: conic-gradient(
    from 0deg,
    transparent 0deg,
    rgba(0, 212, 170, 0.15) 30deg,
    transparent 60deg
  );
  animation: radar-spin 3s linear infinite;
  border-radius: 0 80px 0 0;
}

@keyframes radar-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.radar-center {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 48px;
  height: 48px;
  background: var(--bg-raised);
  border: 1px solid var(--border-bright);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  z-index: 2;
}

.waiting-title {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.waiting-desc {
  font-size: 14px;
  font-weight: 300;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 32px;
}

.waiting-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border-dim);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.grid-cell {
  background: var(--bg-base);
  padding: 14px 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.grid-label {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 1.5px;
  color: var(--text-muted);
}

.grid-value {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.5px;
}

/* ── Download card ── */

.download-card {
  width: 100%;
  max-width: 560px;
  background: var(--bg-base);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow:
    0 4px 24px rgba(0, 0, 0, 0.4),
    0 0 0 1px var(--border-dim);
  animation: card-in 0.5s ease-out;
}

@keyframes card-in {
  from { opacity: 0; transform: scale(0.96) translateY(12px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

/* File header */
.file-header {
  display: flex;
  gap: 14px;
  padding: 22px 24px;
  align-items: flex-start;
}

.file-icon-wrap {
  width: 44px;
  height: 44px;
  background: var(--accent-dim);
  border: 1px solid rgba(0, 212, 170, 0.15);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.file-details {
  flex: 1;
  min-width: 0;
}

.file-name {
  font-size: 15px;
  font-weight: 600;
  word-break: break-word;
  line-height: 1.4;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.file-meta-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.meta-chip {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 4px;
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  color: var(--text-secondary);
  letter-spacing: 0.3px;
}
.meta-chip.format {
  background: var(--accent-dim);
  border-color: rgba(0, 212, 170, 0.15);
}
.meta-chip.format strong {
  color: var(--accent);
  text-transform: uppercase;
  font-weight: 600;
}
.meta-chip.source {
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Card divider */
.card-divider {
  height: 1px;
  background: var(--border-dim);
  margin: 0 24px;
}

/* ── Status ── */

.status-message {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  text-align: center;
  padding: 10px 24px;
  margin: 16px 24px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.3px;
  transition: all 0.3s ease;
}

.status-message.waiting {
  background: var(--info-dim);
  color: var(--info);
  border: 1px solid rgba(68, 136, 255, 0.15);
}
.status-message.downloading {
  background: var(--warn-dim);
  color: var(--warn);
  border: 1px solid rgba(240, 160, 48, 0.15);
}
.status-message.complete {
  background: var(--success-dim);
  color: var(--success);
  border: 1px solid rgba(0, 212, 106, 0.15);
}
.status-message.error {
  background: var(--danger-dim);
  color: var(--danger);
  border: 1px solid rgba(255, 68, 102, 0.15);
}

/* ── Progress ── */

.progress-section {
  padding: 8px 24px 20px;
}

.progress-ring-wrap {
  width: 120px;
  height: 120px;
  margin: 0 auto 16px;
  position: relative;
}

.progress-ring {
  width: 120px;
  height: 120px;
  transform: rotate(-90deg);
}

.progress-ring-bg {
  fill: none;
  stroke: var(--border-dim);
  stroke-width: 4;
}

.progress-ring-fill {
  fill: none;
  stroke: var(--accent);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-dasharray: 326.73;
  stroke-dashoffset: 326.73;
  transition: stroke-dashoffset 0.4s ease;
  filter: drop-shadow(0 0 6px var(--accent-glow));
}
.progress-ring-fill.complete {
  stroke: var(--success);
  filter: drop-shadow(0 0 6px rgba(0, 212, 106, 0.4));
}
.progress-ring-fill.error {
  stroke: var(--danger);
  filter: drop-shadow(0 0 6px rgba(255, 68, 102, 0.4));
}

.progress-percent {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.progress-stats {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 12px;
}

.stat-row {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-muted);
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

.linear-progress-wrap {
  margin-top: 4px;
}

.linear-progress-track {
  height: 3px;
  background: var(--border-dim);
  border-radius: 3px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 3px;
  transition: width 0.3s ease;
}
.progress-bar-fill.complete {
  background: var(--success);
}
.progress-bar-fill.error {
  background: var(--danger);
}

/* ── HLS Quality ── */

.quality-section {
  padding: 0 24px 4px;
}

.quality-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  margin-bottom: 6px;
  background: var(--bg-raised);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
}
.quality-item:hover {
  border-color: var(--accent);
  background: var(--accent-dim);
}
.quality-item.selected {
  border-color: var(--accent);
  background: var(--accent-dim);
  box-shadow: 0 0 0 1px var(--accent) inset;
}

.quality-label {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
}

.quality-detail {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
}

/* ── Segment info ── */

.segment-info {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
  text-align: center;
  padding: 0 24px 12px;
  letter-spacing: 0.3px;
}

/* ── Buttons ── */

.btn-group {
  padding: 0 24px 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.3px;
  transition: all 0.15s ease;
  position: relative;
  overflow: hidden;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0) scale(0.99); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

.btn-primary {
  background: var(--accent);
  color: var(--bg-deep);
  box-shadow: 0 2px 12px var(--accent-glow);
}
.btn-primary:hover {
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-success {
  background: var(--success);
  color: var(--bg-deep);
  box-shadow: 0 2px 12px rgba(0, 212, 106, 0.3);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-base);
  color: var(--text-secondary);
  margin-top: 8px;
}
.btn-outline:hover {
  border-color: var(--text-secondary);
  color: var(--text-primary);
}

/* ── Footer ── */

.page-footer {
  text-align: center;
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  border-top: 1px solid var(--border-dim);
  position: relative;
  z-index: 1;
}

.page-footer .footer-links {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 8px;
}

.page-footer .footer-links a {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 1px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.page-footer .footer-links a:hover {
  color: var(--accent);
}

/* ── Responsive ── */

@media (max-width: 640px) {
  .topbar { padding: 0 16px; }
  .logo-sub { display: none; }
  .logo-divider { display: none; }

  .main-container { padding: 24px 16px; }

  .file-header { padding: 18px 18px; }
  .card-divider { margin: 0 18px; }
  .status-message { margin: 14px 18px; padding: 10px 18px; }
  .progress-section { padding: 8px 18px 18px; }
  .quality-section { padding: 0 18px 4px; }
  .segment-info { padding: 0 18px 12px; }
  .btn-group { padding: 0 18px 18px; }

  .waiting-grid {
    grid-template-columns: 1fr;
  }

  .progress-stats { gap: 20px; }
}