/* ── Tokens ── */
:root {
  --bg-deep: #08080d;
  --bg-base: #0e0e16;
  --bg-surface: rgba(255, 255, 255, 0.04);
  --bg-surface-hover: rgba(255, 255, 255, 0.07);
  --glass: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-hover: rgba(255, 255, 255, 0.10);

  --txt: #e4e4ed;
  --txt-dim: #8b8ba0;
  --txt-faint: #55556a;

  --accent: #a855f7;
  --accent-dim: rgba(168, 85, 247, 0.15);
  --accent-glow: rgba(168, 85, 247, 0.35);
  --blue: #3b82f6;
  --blue-dim: rgba(59, 130, 246, 0.15);

  --success: #22c55e;
  --success-dim: rgba(34, 197, 94, 0.12);
  --danger: #ef4444;
  --danger-dim: rgba(239, 68, 68, 0.12);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 26px;

  --font: 'Inter', -apple-system, 'Segoe UI', sans-serif;
}

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

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

body {
  font-family: var(--font);
  color: var(--txt);
  background: var(--bg-deep);
  background-image:
    radial-gradient(ellipse 80% 60% at 20% 0%, rgba(168, 85, 247, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 100%, rgba(59, 130, 246, 0.06) 0%, transparent 60%);
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: calc(24px + env(safe-area-inset-top)) calc(24px + env(safe-area-inset-right)) calc(24px + env(safe-area-inset-bottom)) calc(24px + env(safe-area-inset-left));
  -webkit-font-smoothing: antialiased;
}

/* ── Frame ── */
.frame {
  width: min(1320px, 100%);
  max-width: 100%;
  min-height: 720px;
  background: var(--bg-base);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow:
    0 0 80px rgba(168, 85, 247, 0.04),
    0 24px 48px rgba(0, 0, 0, 0.4);
  padding: 40px 56px 52px;
  position: relative;
  overflow: hidden;
}

.frame::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 50% 30% at 0% 0%, rgba(168, 85, 247, 0.06), transparent),
    radial-gradient(ellipse 40% 25% at 100% 100%, rgba(59, 130, 246, 0.04), transparent);
  pointer-events: none;
}

/* ── Title ── */
.title-box {
  position: relative;
  width: fit-content;
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 12px 32px;
  margin-bottom: 44px;
  background: linear-gradient(135deg, var(--accent-dim), var(--blue-dim));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--txt);
  background-clip: padding-box;
}

.title-box::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 20%;
  right: 20%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), var(--blue), transparent);
  border-radius: 2px;
}

/* ── Supported URLs ── */
.supported-urls {
  margin-bottom: 12px;
}

.supported-urls-toggle {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--txt-faint);
  cursor: pointer;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 0;
  transition: color 0.2s;
}

.supported-urls-toggle::-webkit-details-marker {
  display: none;
}

.supported-urls-toggle::before {
  content: '▸';
  font-size: 10px;
  transition: transform 0.2s;
  display: inline-block;
}

.supported-urls[open]>.supported-urls-toggle::before {
  transform: rotate(90deg);
}

.supported-urls-toggle:hover {
  color: var(--txt-dim);
}

.supported-urls-list {
  list-style: none;
  margin-top: 8px;
  padding: 10px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
}

.supported-urls-list li {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 12px;
  color: var(--txt-dim);
  white-space: nowrap;
}

.supported-urls-list li::before {
  content: '•';
  margin-right: 6px;
  color: var(--accent);
  opacity: 0.5;
}

/* ── Input ── */
.input-wrap {
  position: relative;
  width: min(620px, 100%);
  margin-bottom: 36px;
}

.floating-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent);
  padding: 4px 14px;
  background: var(--bg-base);
  border: 1px solid var(--glass-border);
  border-bottom: none;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  transform: translateY(1px);
  position: relative;
  z-index: 1;
}

.input-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
  min-width: 0;
}

.input-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.input-action-btn {
  height: 56px;
  padding: 0 14px;
  font-size: 13px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.04);
}

input[type="url"] {
  height: 56px;
  background: var(--bg-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--txt);
  font-family: var(--font);
  font-size: 15px;
  padding: 0 16px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

input[type="url"]::placeholder {
  color: var(--txt-faint);
}

input[type="url"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim), 0 0 20px var(--accent-dim);
}

/* ── Buttons ── */
button {
  font-family: var(--font);
  border: 1px solid var(--glass-border);
  background: var(--glass);
  color: var(--txt);
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  padding: 0 24px;
  cursor: pointer;
  height: 56px;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

button::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-dim), var(--blue-dim));
  opacity: 0;
  transition: opacity 0.2s;
}

button:hover {
  border-color: rgba(168, 85, 247, 0.3);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(168, 85, 247, 0.15);
}

button:hover::before {
  opacity: 1;
}

button:active {
  transform: translateY(0);
}

button:disabled {
  opacity: 0.35;
  cursor: default;
  transform: none;
  box-shadow: none;
}

button span {
  position: relative;
  z-index: 1;
}

/* Resolve button — primary */
#resolveBtn {
  background: linear-gradient(135deg, var(--accent), #7c3aed);
  border: none;
  color: #fff;
  letter-spacing: 0.5px;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

#resolveBtn:hover {
  box-shadow: 0 4px 24px var(--accent-glow);
  filter: brightness(1.1);
}

#resolveBtn::before {
  display: none;
}

/* ── Helper row ── */
.helper-row {
  margin-top: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--txt-dim);
}

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

/* ── Status ── */
#statusText {
  font-weight: 500;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 12px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  transition: all 0.3s ease;
}

#statusText.status-ready {
  background: var(--bg-surface);
  color: var(--txt-dim);
}

#statusText.status-loading {
  background: var(--blue-dim);
  color: var(--blue);
  animation: pulse-status 1.5s ease-in-out infinite;
}

#statusText.status-ok {
  background: var(--success-dim);
  color: var(--success);
}

#statusText.error,
#statusText.status-error {
  background: var(--danger-dim);
  color: var(--danger);
}

@keyframes pulse-status {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

/* ── Workspace ── */
.workspace {
  position: relative;
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 28px;
  align-items: stretch;
}

.workspace>* {
  min-width: 0;
}

/* ── Panel (glass) ── */
.panel {
  background: var(--glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: border-color 0.3s;
  min-width: 0;
}

.panel:hover {
  border-color: rgba(255, 255, 255, 0.12);
}

/* ── File panel ── */
.file-panel {
  padding: 20px;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--glass-border);
}

.panel-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--txt-faint);
  text-align: left;
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.list-reset-btn {
  height: 30px;
  padding: 0 12px;
  border-radius: 999px;
  font-size: 11px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.04);
}

.list-reset-btn::before {
  opacity: 0.35;
}

.file-list {
  list-style: none;
  font-size: 14px;
  font-family: 'SF Mono', 'Fira Code', monospace;
  overflow: auto;
  flex: 1 1 0;
  padding-right: 4px;
}

.file-list ul {
  list-style: none;
  padding-left: 14px;
  margin-top: 4px;
  min-width: 0;
}

.dir {
  color: var(--blue);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 6px 0 2px;
}

.dir>span:first-child,
.dir::before {
  text-transform: uppercase;
}

.dir>ul {
  text-transform: none;
  letter-spacing: 0;
  font-size: 14px;
}

.dir+.dir {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--glass-border);
}

.folder-node {
  color: var(--txt-dim);
  text-transform: none;
  letter-spacing: 0;
  font-size: 14px;
  font-weight: 400;
}

.file {
  margin-top: 3px;
  color: var(--txt-faint);
  padding: 5px 8px;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
  cursor: default;
  display: block;
  overflow: hidden;
}

.file-row {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  overflow: hidden;
}

.folder-row {
  cursor: pointer;
  user-select: none;
}

.folder-caret {
  width: 14px;
  flex: 0 0 14px;
  color: var(--txt-dim);
  font-weight: 700;
  text-align: center;
}

.file-thumb-box {
  width: 30px;
  height: 30px;
  border-radius: 6px;
  border: 1px solid var(--glass-border);
  background: rgba(255, 255, 255, 0.04);
  flex: 0 0 30px;
  overflow: hidden;
  display: grid;
  place-items: center;
}

.file-thumb-box.thumb-fallback {
  color: var(--txt-faint);
  font-size: 14px;
  opacity: 0.5;
}

.file-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.file-label {
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
  font-size: 13px;
}

.file.ok {
  color: var(--txt);
  background: rgba(255, 255, 255, 0.04);
  border-left: 2px solid var(--accent);
}

.file.file-selectable {
  cursor: pointer;
}

.file.file-selectable:hover {
  background: rgba(255, 255, 255, 0.08);
}

.file.selected {
  background: var(--accent-dim);
  border-left: 2px solid var(--accent);
}

.file.empty {
  color: var(--txt-faint);
  font-style: italic;
  font-size: 12px;
  text-align: center;
  padding: 16px 8px;
  opacity: 0.6;
}

/* ── Preview area ── */
.preview-area {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
}

.preview-panel {
  aspect-ratio: 16 / 9;
  min-height: 360px;
  position: relative;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.3);
}

.preview-empty {
  height: 100%;
  display: grid;
  place-items: center;
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--txt-faint);
  position: relative;
}

.preview-empty::before {
  content: '';
  position: absolute;
  width: 80px;
  height: 80px;
  border: 2px dashed var(--glass-border);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -70%);
}

#previewVideo,
#previewImage {
  width: 100%;
  height: 100%;
  display: none;
  object-fit: contain;
  background: #000;
  border-radius: var(--radius-lg);
}

/* ── Action row ── */
.action-row {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.action-left {
  margin-right: auto;
  min-width: 0;
  display: flex;
  align-items: center;
}

.file-name-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  max-width: 100%;
  font-size: 12px;
  color: var(--txt);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  padding: 7px 12px;
}

.file-name-tag {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--accent);
  flex: 0 0 auto;
}

.file-name-text {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-name-size {
  flex: 0 0 auto;
  font-size: 11px;
  color: var(--txt-dim);
  white-space: nowrap;
}

.action-row button {
  width: 160px;
  height: 48px;
  font-size: 14px;
}

/* ── Footer ── */
.site-footer {
  width: 100%;
  display: flex;
  justify-content: center;
  padding: 16px 0 4px;
}

.github-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--txt-faint);
  text-decoration: none;
  opacity: 0.4;
  transition: opacity 0.2s, color 0.2s;
}

.github-link:hover {
  opacity: 0.8;
  color: var(--txt-dim);
}

#downloadBtn {
  background: linear-gradient(135deg, var(--blue), #2563eb);
  border: none;
  color: #fff;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

#downloadBtn:hover {
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.35);
  filter: brightness(1.1);
}

#downloadBtn::before {
  display: none;
}

/* ── Responsive ── */
@media (max-width: 960px) {
  body {
    place-items: start center;
    padding: calc(14px + env(safe-area-inset-top)) calc(14px + env(safe-area-inset-right)) calc(14px + env(safe-area-inset-bottom)) calc(14px + env(safe-area-inset-left));
  }

  .frame {
    padding: 24px 20px 32px;
    min-height: auto;
    border-radius: var(--radius-lg);
  }

  .title-box {
    font-size: 24px;
    padding: 10px 24px;
    margin-bottom: 28px;
  }

  .workspace {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .file-panel {
    padding: 16px;
  }

  .file-list {
    flex: 0 1 auto;
    max-height: min(300px, 40vh);
  }

  .preview-panel {
    min-height: 240px;
  }

  .preview-empty {
    min-height: 0;
  }

  #previewVideo {
    min-height: 0;
  }

  #previewImage {
    min-height: 0;
  }

  button {
    font-size: 14px;
    height: 48px;
  }

  /* iOS Safari: font-size < 16px triggers zoom on focus */
  input[type="url"] {
    font-size: 16px;
    height: 48px;
  }

  .action-row {
    justify-content: stretch;
  }

  .action-row button {
    flex: 1;
    width: auto;
  }
}

@media (max-width: 520px) {
  .title-box {
    width: 100%;
    text-align: center;
    font-size: 20px;
    letter-spacing: 1px;
  }

  .input-row {
    grid-template-columns: 1fr;
  }

  .input-actions {
    width: 100%;
  }

  .input-actions button {
    flex: 1;
    width: auto;
  }

  .helper-row {
    flex-wrap: wrap;
    gap: 10px;
  }

  .helper-right {
    width: 100%;
    justify-content: space-between;
  }

  .file-list {
    max-height: min(240px, 34vh);
  }

  .panel-header {
    margin-bottom: 16px;
    padding-bottom: 10px;
  }

  .action-row button {
    width: 100%;
    flex: 1 1 100%;
  }

  .action-left {
    flex: 1 1 100%;
    width: 100%;
  }

  .file-name-badge {
    width: 100%;
  }
}