web_demo/static/styles.css

:root {
  --bg-1: #f5f1e7;
  --bg-2: #eedad5;
  --bg-3: #e7efe8;
  --ink: #2b1f1f;
  --ink-soft: #4b3d3d;
  --accent: #bf3a2b;
  --accent-dark: #8f2b22;
  --sand: #f9f4ec;
  --shadow: rgba(34, 26, 26, 0.12);
  --border: rgba(45, 33, 33, 0.18);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: radial-gradient(circle at 10% 20%, var(--bg-3), transparent 55%),
              radial-gradient(circle at 80% 10%, var(--bg-2), transparent 50%),
              linear-gradient(140deg, var(--bg-1), #fff8f2 60%, #f0e2d8 100%);
  font-family: "Iowan Old Style", "Palatino", "Book Antiqua", "Times New Roman", serif;
}

.background-orbit {
  position: fixed;
  inset: -30% 10% auto auto;
  width: 60vw;
  height: 60vw;
  background: conic-gradient(from 120deg, rgba(191, 58, 43, 0.2), transparent, rgba(91, 44, 120, 0.18));
  border-radius: 50%;
  filter: blur(10px);
  opacity: 0.6;
  z-index: 0;
  animation: slow-spin 40s linear infinite;
}

.background-glow {
  position: fixed;
  inset: auto auto -15% -10%;
  width: 55vw;
  height: 55vw;
  background: radial-gradient(circle, rgba(191, 58, 43, 0.18), transparent 70%);
  border-radius: 50%;
  filter: blur(20px);
  z-index: 0;
}

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

.hero {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(280px, 1.2fr) minmax(280px, 0.9fr);
  gap: 32px;
  padding: 72px 8vw 48px;
  align-items: center;
}

.hero-copy h1 {
  font-family: "Futura", "Gill Sans", "Optima", "Trebuchet MS", sans-serif;
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  margin: 0 0 12px;
  letter-spacing: 0.02em;
}

.hero-kicker {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-dark);
  margin: 0 0 12px;
}

.hero-sub {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--ink-soft);
  max-width: 36ch;
}

.hero-card {
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 28px;
  box-shadow: 0 24px 60px var(--shadow);
  backdrop-filter: blur(8px);
  animation: rise-in 0.8s ease;
}

@keyframes rise-in {
  from { transform: translateY(16px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.file-drop {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px;
  border: 1.5px dashed var(--accent);
  border-radius: 18px;
  background: var(--sand);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.file-drop:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(191, 58, 43, 0.15);
}

.file-drop input {
  display: none;
}

.file-title {
  font-size: 1.1rem;
  font-weight: 600;
}

.file-hint {
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin: 20px 0;
}

.controls label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

select {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 0.95rem;
  background: white;
  color: var(--ink);
}

.primary {
  width: 100%;
  border: none;
  border-radius: 14px;
  padding: 12px 16px;
  font-size: 1rem;
  font-weight: 600;
  color: white;
  background: linear-gradient(120deg, var(--accent), #e25f4f);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(191, 58, 43, 0.25);
}

.status {
  margin-top: 12px;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.content {
  position: relative;
  z-index: 1;
  padding: 0 8vw 80px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.preview,
.result {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.panel {
  background: rgba(255, 255, 255, 0.78);
  border-radius: 20px;
  border: 1px solid var(--border);
  padding: 20px;
  box-shadow: 0 18px 40px rgba(43, 31, 31, 0.08);
  backdrop-filter: blur(6px);
}

.panel h2 {
  margin: 0 0 12px;
  font-family: "Futura", "Gill Sans", "Optima", "Trebuchet MS", sans-serif;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.ghost {
  text-decoration: none;
  font-size: 0.85rem;
  color: var(--accent-dark);
  border: 1px solid var(--border);
  padding: 6px 10px;
  border-radius: 999px;
  background: white;
}

.image-frame {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  background: #f6efea;
  min-height: 260px;
  display: grid;
  place-items: center;
}

.image-frame img {
  width: 100%;
  height: auto;
  display: none;
}

.image-frame.show img {
  display: block;
}

.placeholder {
  color: var(--ink-soft);
  font-size: 0.95rem;
}

pre {
  background: #1f1717;
  color: #f7ece8;
  padding: 16px;
  border-radius: 16px;
  min-height: 240px;
  overflow: auto;
  font-size: 0.85rem;
  line-height: 1.6;
}

.tips ul {
  margin: 0;
  padding-left: 0;
  list-style: none;
  color: var(--ink-soft);
  line-height: 1.7;
}

.tips li + li {
  margin-top: 4px;
}

@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
    padding: 56px 6vw 36px;
  }

  .hero-copy h1 {
    font-size: 2.4rem;
  }
}