:root {
  --bg-a: #f5efe3;
  --bg-b: #d4e5f5;
  --panel: rgba(255, 255, 255, 0.9);
  --text: #1f2937;
  --muted: #5f6b7a;
  --accent: #0a7d55;
  --accent-strong: #085b3f;
  --error: #9f1239;
  --border: #d8dee8;
  --shadow: 0 18px 42px rgba(0, 30, 60, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Avenir Next", "Trebuchet MS", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top right, #fff4d6 0%, transparent 40%),
    linear-gradient(135deg, var(--bg-a), var(--bg-b));
}

.page {
  width: min(980px, 94vw);
  margin: 2.5rem auto;
  display: grid;
  gap: 1rem;
}

.hero,
.panel,
.preview-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.hero,
.panel {
  padding: 1.25rem;
}

.hero h1 {
  margin: 0;
  font-size: clamp(1.6rem, 3.4vw, 2.4rem);
  letter-spacing: 0.02em;
}

.hero p {
  margin: 0.5rem 0 0;
  color: var(--muted);
  max-width: 70ch;
}

.status {
  margin-top: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.4rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #fff;
  font-size: 0.92rem;
}

.status-dot {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  background: #9ca3af;
}

.status.ok .status-dot {
  background: #16a34a;
}

.status.error .status-dot {
  background: #dc2626;
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field label {
  font-weight: 700;
}

input[type="file"],
input[type="range"] {
  width: 100%;
}

.hint {
  color: var(--muted);
  font-size: 0.93rem;
}

.controls-grid {
  margin-top: 0.85rem;
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.actions {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

button,
.button {
  appearance: none;
  border: 0;
  border-radius: 10px;
  padding: 0.72rem 1rem;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
}

button,
.button {
  color: #fff;
  background: var(--accent);
}

button:hover,
.button:hover {
  background: var(--accent-strong);
}

button:disabled {
  cursor: wait;
  opacity: 0.7;
}

.button.secondary {
  background: #0f172a;
}

.preview-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
}

.preview-card {
  padding: 1rem;
}

.preview-card h2 {
  margin: 0 0 0.65rem;
  font-size: 1.05rem;
}

.preview-box {
  min-height: 220px;
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 0.8rem;
  display: grid;
  place-items: center;
  color: var(--muted);
  background: #fafcff;
  text-align: center;
}

.preview-image {
  width: 100%;
  max-height: 420px;
  object-fit: contain;
  border-radius: 10px;
  border: 1px solid var(--border);
  image-rendering: pixelated;
}

.error {
  margin-top: 0.8rem;
  color: var(--error);
  font-weight: 600;
}

.hidden {
  display: none !important;
}