@font-face {
  font-family: "GothicTitle";
  src: url("../font/GothicII.ttf") format("truetype");
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

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

:root {
  --bg: #0f172a;
  --bg-elevated: #111827;
  --bg-soft: #020617;
  --border-subtle: #1f2937;
  --accent: #38bdf8;
  --accent-soft: rgba(56, 189, 248, 0.15);
  --text: #e5e7eb;
  --text-muted: #9ca3af;
  --radius-lg: 18px;
  --shadow-soft: 0 18px 40px rgba(15, 23, 42, 0.45);
  --transition-fast: 150ms ease-out;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
}

html, body { height: 100%; margin: 0; }
body {
  overflow: hidden;
  font-family: var(--font-sans);
  background: radial-gradient(circle at top, #1f2937 0, #020617 55%, #000 100%);
  background-attachment: fixed;
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

button, input, select { font: inherit; }

.app {
  height: 100vh;
  max-width: 2000px;
  margin: 0 auto;
  padding: 1.5rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.app-header {
  flex: 0 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  padding: 0.8rem 1.1rem;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(15, 23, 42, 0.75));
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(14px);
}

.app-header h1 {
  margin: 0;
  font-family: "GothicTitle", var(--font-sans);
  font-size: 1.8rem;
  font-weight: normal;
  letter-spacing: 0.035em;
}

.app-subtitle {
  margin: 0.1rem 0 0;
  font-size: 0.79rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.header-meta {
  padding-top: 0.15rem;
  text-align: right;
  font-size: 0.8rem;
  line-height: 1.4;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

.app-main {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 280px minmax(0, 2fr) 600px;
  gap: 1.5rem;
}

.panel {
  min-width: 0;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.96), rgba(15, 23, 42, 0.92));
  border-radius: var(--radius-lg);
  border: 1px solid rgba(31, 41, 55, 0.9);
  box-shadow: var(--shadow-soft);
  padding: 1rem 1rem 1.1rem;
  position: relative;
  overflow: hidden;
}

.panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.1), transparent 55%);
  opacity: 0.6;
  pointer-events: none;
}
.panel > * { position: relative; z-index: 1; }

.panel-title {
  margin: 0 0 0.65rem;
  font-family: "GothicTitle", var(--font-sans);
  font-size: 1.12rem;
  font-weight: normal;
  letter-spacing: 0.04em;
  color: #cbd5e1;
}

.panel-heading-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}
.result-count { font-size: 0.78rem; color: var(--text-muted); white-space: nowrap; }

#controls-form { display: flex; flex-direction: column; gap: 0.8rem; }
.field-group { display: flex; flex-direction: column; gap: 0.35rem; }
.field-label {
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--text-muted);
}
.field-inline { display: inline-flex; align-items: center; gap: 0.4rem; font-size: 0.88rem; }
.field-inline input { accent-color: var(--accent); }

select, input[type="text"] {
  width: 100%;
  padding: 0.46rem 0.62rem;
  border-radius: 999px;
  border: 1px solid rgba(55, 65, 81, 0.9);
  background: #020617;
  color: var(--text);
  outline: none;
}
select option { background: #020617; color: var(--text); }
select:focus, input[type="text"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.6);
}
.field-help { margin: 0; font-size: 0.75rem; color: var(--text-muted); }

.panel--controls, .panel--preview { align-self: stretch; }
.panel--gallery { height: 100%; overflow-y: auto; overflow-x: hidden; }
.panel--gallery { scrollbar-width: thin; scrollbar-color: #1e3a8a rgba(10, 12, 24, 0.6); }
.panel--gallery::-webkit-scrollbar { width: 12px; }
.panel--gallery::-webkit-scrollbar-track { background: rgba(10, 12, 24, 0.6); border-radius: 10px; }
.panel--gallery::-webkit-scrollbar-thumb {
  background: linear-gradient(to bottom, #1e3a8a, #0f172a);
  border-radius: 10px;
  border: 2px solid rgba(15, 23, 42, 0.9);
}
.panel--gallery::-webkit-scrollbar-thumb:hover { background: linear-gradient(to bottom, #3758c7, #1e3a8a); }

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 0.6rem;
  margin-top: 0.3rem;
}
.gallery-empty { margin: 0.5rem 0 0; color: var(--text-muted); }

.vob-card {
  background: radial-gradient(circle at top left, rgba(15, 23, 42, 0.9), rgba(2, 6, 23, 0.95));
  border-radius: 12px;
  padding: 0.45rem 0.45rem 0.35rem;
  border: 1px solid rgba(31, 41, 55, 0.95);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.6);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}
.vob-card--framed { border-width: 2px; border-color: var(--frame-color, rgba(55, 65, 81, 0.9)); }
.vob-card:hover { transform: translateY(-1px); box-shadow: 0 14px 32px rgba(15, 23, 42, 0.9); }

.vob-thumbs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.2rem; }
.vob-thumbs--single { display: flex; align-items: center; justify-content: center; padding: 0.25rem; }
.vob-thumbs--single .vob-thumb-button { width: 100%; max-width: 180px; aspect-ratio: 1; }

.vob-thumb-button {
  border: 0;
  padding: 0;
  background: transparent;
  border-radius: 9px;
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 1;
  box-shadow: 0 0 0 1px rgba(30, 64, 175, 0.25);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast);
}
.vob-thumb-button img { display: block; width: 100%; height: 100%; object-fit: cover; }
.vob-thumb-button:hover { transform: translateY(-1px); box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.65), 0 6px 20px rgba(15, 23, 42, 0.9); }
.vob-thumb-button.is-missing { opacity: 0.25; cursor: default; }
.vob-name { font-size: 0.75rem; color: var(--text-muted); text-align: center; word-break: break-all; }

.preview-box { display: flex; flex-direction: column; gap: 0.8rem; height: 100%; }
.preview-image-wrapper {
  overflow: hidden;
  border-radius: 18px;
  border: 1px solid rgba(31, 41, 55, 0.9);
  background: radial-gradient(circle at top, rgba(30, 64, 175, 0.3), rgba(2, 6, 23, 0.95));
  min-height: 360px;
  height: min(68vh, 720px);
  display: flex;
  align-items: center;
  justify-content: center;
}
.preview-image-wrapper img { display: block; width: 100%; height: 100%; object-fit: contain; }
.preview-info { display: flex; flex-direction: column; gap: 0.2rem; }
.preview-name { font-size: 0.92rem; font-weight: 600; word-break: break-all; }
.preview-note { font-size: 0.78rem; color: var(--text-muted); text-transform: capitalize; }

@media (max-width: 1350px) {
  .app { padding-inline: 1.5rem; }
  .app-main { grid-template-columns: 250px minmax(0, 1fr) 430px; }
}

@media (max-width: 1024px) {
  body { overflow: auto; }
  .app { height: auto; min-height: 100vh; }
  .app-main {
    grid-template-columns: minmax(220px, 260px) minmax(0, 1fr);
    grid-template-areas: "controls preview" "gallery gallery";
  }
  .panel--controls { grid-area: controls; }
  .panel--gallery { grid-area: gallery; max-height: 70vh; }
  .panel--preview { grid-area: preview; }
}

@media (max-width: 720px) {
  .app { padding: 0.75rem; gap: 0.75rem; }
  .app-header { flex-direction: column; border-radius: 20px; }
  .header-meta { text-align: left; }
  .app-main { display: flex; flex-direction: column; }
  .panel--gallery { max-height: none; overflow: visible; }
  .preview-image-wrapper { height: min(65vh, 520px); }
}