:root {
  --bg: #f3efe5;
  --panel: rgba(255, 252, 245, 0.92);
  --ink: #18251d;
  --muted: #5d6b63;
  --accent: #0e7a5f;
  --accent-strong: #075643;
  --line: rgba(24, 37, 29, 0.12);
  --shadow: 0 24px 50px rgba(24, 37, 29, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", "Helvetica Neue", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(14, 122, 95, 0.18), transparent 28%),
    radial-gradient(circle at top right, rgba(210, 146, 66, 0.16), transparent 22%),
    linear-gradient(180deg, #fbf8f0 0%, var(--bg) 100%);
}

.shell {
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 20px 64px;
}

.hero {
  margin-bottom: 28px;
}

.eyebrow {
  margin: 0 0 8px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 700;
}

.hero h1 {
  margin: 0;
  max-width: 780px;
  font-size: clamp(34px, 5vw, 62px);
  line-height: 0.98;
}

.lede {
  max-width: 760px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.6;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.controls,
.log-card {
  padding: 20px;
  margin-bottom: 20px;
}

.row {
  display: flex;
  gap: 16px;
  align-items: end;
  flex-wrap: wrap;
}

.field {
  display: grid;
  gap: 8px;
  flex: 1 1 320px;
  font-weight: 600;
}

input[type="file"] {
  padding: 14px;
  border: 1px dashed var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.72);
}

button {
  border: 0;
  border-radius: 999px;
  padding: 14px 22px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  background: #e6ece9;
  color: var(--ink);
  transition: transform 140ms ease, background 140ms ease, opacity 140ms ease;
}

button:hover:not(:disabled) {
  transform: translateY(-1px);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

button.primary {
  background: linear-gradient(135deg, var(--accent) 0%, #2c9e7a 100%);
  color: white;
}

.meta {
  margin-top: 14px;
  color: var(--muted);
  font-size: 14px;
}

.grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-bottom: 20px;
}

.preview {
  padding: 18px;
}

.preview h2,
.log-card h2 {
  margin: 0 0 14px;
  font-size: 18px;
}

.preview img {
  width: 100%;
  min-height: 280px;
  object-fit: contain;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid var(--line);
  border-radius: 18px;
}

#log {
  margin: 0;
  min-height: 200px;
  max-height: 320px;
  overflow: auto;
  padding: 14px;
  border-radius: 18px;
  background: #11211a;
  color: #d6f8eb;
  font-size: 13px;
  line-height: 1.5;
}

@media (max-width: 860px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    line-height: 1.04;
  }
}