:root {
  --bg: #071019;
  --bg-2: #0b1625;
  --panel: rgba(10, 17, 30, 0.82);
  --panel-border: rgba(160, 180, 210, 0.14);
  --text: #e8f1ff;
  --muted: #8fa4c4;
  --primary: #67e8f9;
  --primary-2: #8b5cf6;
  --success: #4ade80;
  --shadow: 0 25px 80px rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 10%, rgba(103, 232, 249, 0.16), transparent 20%),
    radial-gradient(circle at 90% 0%, rgba(139, 92, 246, 0.14), transparent 22%),
    linear-gradient(180deg, var(--bg-2), var(--bg));
}

button,
input,
select,
textarea,
a {
  font: inherit;
}

textarea {
  resize: vertical;
}

.page {
  width: min(1220px, calc(100% - 28px));
  margin: 0 auto;
  padding: 28px 0 42px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 28px;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  padding: 28px;
  margin-bottom: 24px;
}

.badge,
.eyebrow {
  display: inline-block;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 12px;
}

.hero h1,
.section-title h2 {
  margin: 12px 0 0;
}

.hero h1 {
  font-size: clamp(32px, 4.8vw, 56px);
  line-height: 1.05;
  max-width: 12ch;
}

.hero-text {
  margin: 18px 0 0;
  line-height: 1.8;
  color: var(--muted);
  max-width: 62ch;
}

.hero-pills,
.preview-actions,
.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-pills {
  margin-top: 22px;
}

.hero-pills span,
.status-box,
.meta-box,
.hero-stats article,
#task-meta li,
.download-btn,
.ghost-btn,
.primary-btn,
.result-card {
  border-radius: 18px;
}

.hero-pills span,
#task-meta li {
  padding: 8px 12px;
  border: 1px solid rgba(160, 180, 210, 0.16);
  background: rgba(255, 255, 255, 0.03);
}

.hero-stats {
  display: grid;
  gap: 14px;
}

.hero-stats article {
  padding: 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(160, 180, 210, 0.08);
}

.hero-stats strong {
  display: block;
  font-size: 28px;
  margin-bottom: 8px;
}

.hero-stats span,
.empty-tip,
.status-box,
.meta-box p,
#file-name,
.uploader p,
.result-empty {
  color: var(--muted);
}

.workspace {
  display: grid;
  grid-template-columns: 430px 1fr;
  gap: 24px;
  align-items: start;
}

.controls-panel,
.preview-panel {
  padding: 24px;
}

.section-title {
  margin-bottom: 18px;
}

.uploader {
  display: grid;
  gap: 10px;
  padding: 22px;
  border: 1px dashed rgba(103, 232, 249, 0.34);
  border-radius: 22px;
  background: rgba(103, 232, 249, 0.04);
  margin-bottom: 18px;
  text-align: center;
}

.control-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.field {
  display: grid;
  gap: 8px;
}

.field-full {
  grid-column: 1 / -1;
}

.field span,
.meta-box h3 {
  font-size: 14px;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid rgba(160, 180, 210, 0.14);
  background: rgba(5, 11, 20, 0.7);
  color: var(--text);
  padding: 13px 14px;
  border-radius: 16px;
  outline: none;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: rgba(103, 232, 249, 0.7);
  box-shadow: 0 0 0 4px rgba(103, 232, 249, 0.08);
}

.action-row {
  margin: 18px 0;
}

.primary-btn,
.ghost-btn,
.download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  text-decoration: none;
  transition: transform 0.18s ease, opacity 0.18s ease;
  cursor: pointer;
  border: none;
}

.primary-btn {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #05111b;
  font-weight: 800;
}

.ghost-btn,
.download-btn {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.primary-btn:hover,
.ghost-btn:hover,
.download-btn:hover {
  transform: translateY(-1px);
}

.meta-box {
  background: rgba(255, 255, 255, 0.03);
  padding: 18px;
  border: 1px solid rgba(160, 180, 210, 0.08);
}

.meta-box h3 {
  margin: 0 0 12px;
}

#task-meta {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

#task-meta li {
  line-height: 1.6;
}

.preview-stage,
.result-card {
  position: relative;
  display: grid;
  place-items: center;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.01));
  border: 1px solid rgba(160, 180, 210, 0.08);
  overflow: hidden;
}

.preview-stage {
  min-height: 420px;
  border-radius: 24px;
}

.result-card {
  min-height: 320px;
  margin-top: 18px;
  padding: 14px;
}

.image-preview,
.result-video {
  width: 100%;
  max-height: 560px;
  object-fit: contain;
  border-radius: 18px;
  background: #02060d;
}

.empty-tip,
.result-empty {
  position: absolute;
  inset: auto 24px 24px;
  text-align: center;
}

.preview-actions {
  margin-top: 18px;
}

.download-btn.disabled {
  opacity: 0.45;
  pointer-events: none;
}

.status-box {
  margin-top: 16px;
  padding: 16px 18px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(160, 180, 210, 0.08);
}

.hidden {
  display: none !important;
}

@media (max-width: 1040px) {
  .hero,
  .workspace {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .page {
    width: min(100% - 16px, 1220px);
    padding-top: 16px;
  }

  .hero,
  .controls-panel,
  .preview-panel {
    padding: 18px;
  }

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

  .preview-stage {
    min-height: 280px;
  }

  .result-card {
    min-height: 220px;
  }
}