:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --surface-hover: #334155;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --accent: #10b981;
  --accent-hover: #059669;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --radius: 8px;
  --max-width: 480px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 32px 20px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

header h1 {
  font-size: 24px;
  font-weight: 700;
}

.back {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
}

.back:hover {
  color: var(--text);
}

section {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}

section h2 {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

label {
  display: block;
  margin-bottom: 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
}

label input {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  border: 1px solid var(--surface-hover);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  outline: none;
}

label input:focus {
  border-color: var(--accent);
}

.preview {
  margin-top: 8px;
  max-width: 120px;
  max-height: 120px;
  border-radius: var(--radius);
  overflow: hidden;
}

.preview img {
  width: 100%;
  height: auto;
  display: block;
}

.actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.btn-primary {
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  border-radius: var(--radius);
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  transition: background 0.15s;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.saved {
  font-size: 14px;
  color: var(--accent);
  opacity: 0;
  transition: opacity 0.3s;
}

.saved.show {
  opacity: 1;
}

.danger-zone {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.danger-zone h2 {
  width: 100%;
  margin-bottom: 12px;
}

.btn-secondary {
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--surface-hover);
  border-radius: var(--radius);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s;
}

.btn-secondary:hover {
  background: var(--surface-hover);
}

.btn-danger {
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 500;
  border: none;
  border-radius: var(--radius);
  background: var(--danger);
  color: #fff;
  cursor: pointer;
  transition: background 0.15s;
}

.btn-danger:hover {
  background: var(--danger-hover);
}