* {
  box-sizing: border-box;
}

:root {
  color-scheme: light dark;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  background: var(--bg);
  background-image: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text);
}

body[data-theme="dark"] {
  --bg: #0f172a;
  --bg-gradient: radial-gradient(circle at top, #111827, #0b1120 55%, #020617);
  --text: #e2e8f0;
  --muted: #94a3b8;
  --label: #cbd5f5;
  --status: #cbd5f5;
  --card-bg: #111827;
  --card-border: #1f2937;
  --card-shadow: 0 12px 30px rgba(15, 23, 42, 0.25);
  --field-bg: #0b1120;
  --field-border: #334155;
  --primary: #f8fafc;
  --primary-text: #0f172a;
  --primary-shadow: rgba(248, 250, 252, 0.25);
  --preview-border: #334155;
  --preview-bg: rgba(2, 6, 23, 0.4);
  --secondary-border: #475569;
  --secondary-text: #e2e8f0;
  --logo-bg: #0f172a;
  --logo-text: #f8fafc;
  --logo-border: #334155;
}

body[data-theme="light"] {
  --bg: #f8fafc;
  --bg-gradient: radial-gradient(circle at top, #ffffff, #f1f5f9 50%, #e2e8f0);
  --text: #0f172a;
  --muted: #475569;
  --label: #334155;
  --status: #475569;
  --card-bg: #ffffff;
  --card-border: #e2e8f0;
  --card-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
  --field-bg: #f1f5f9;
  --field-border: #cbd5f5;
  --primary: #0f172a;
  --primary-text: #ffffff;
  --primary-shadow: rgba(15, 23, 42, 0.2);
  --preview-border: #cbd5f5;
  --preview-bg: rgba(226, 232, 240, 0.5);
  --secondary-border: #cbd5f5;
  --secondary-text: #0f172a;
  --logo-bg: #0f172a;
  --logo-text: #f8fafc;
  --logo-border: #0f172a;
}

.page {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 20px 64px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.header h1 {
  margin: 0 0 8px;
  font-size: 28px;
}

.subtitle {
  margin: 0;
  color: var(--muted);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: var(--logo-bg);
  color: var(--logo-text);
  border: 1px solid var(--logo-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  letter-spacing: 0.5px;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.15);
}

.logo-icon {
  width: 28px;
  height: 28px;
}

.toolbar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: flex-end;
}

.toolbar-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 120px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 24px;
  box-shadow: var(--card-shadow);
  backdrop-filter: blur(8px);
}

.form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.label {
  font-size: 14px;
  color: var(--label);
}

input[type="file"],
select,
textarea {
  border-radius: 12px;
  border: 1px solid var(--field-border);
  background: var(--field-bg);
  color: var(--text);
  padding: 12px;
  font-size: 14px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

textarea {
  resize: vertical;
}

.input-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.input-row input {
  flex: 1;
}

.ghost {
  border: 1px solid var(--secondary-border);
  background: transparent;
  color: var(--secondary-text);
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.ghost:hover {
  background: rgba(148, 163, 184, 0.15);
}

.helper {
  margin: 0;
  font-size: 12px;
  color: var(--muted);
}

.help-button {
  align-self: flex-end;
  height: 40px;
  padding: 0 16px;
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible,
button:focus-visible,
.ghost:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

button.primary {
  border: none;
  border-radius: 12px;
  padding: 12px 18px;
  background: var(--primary);
  color: var(--primary-text);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

button.primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

button.primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 10px 20px var(--primary-shadow);
}

.status {
  margin-bottom: 16px;
  font-size: 14px;
  color: var(--status);
}

.preview {
  width: 100%;
  min-height: 260px;
  border-radius: 16px;
  border: 1px dashed var(--preview-border);
  background: var(--preview-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.preview img {
  max-width: 100%;
  border-radius: 12px;
  display: none;
}

.preview-placeholder {
  color: var(--muted);
  font-size: 12px;
}

.preview-small {
  min-height: 160px;
  margin-top: 10px;
}

.actions {
  margin-top: 16px;
}

.secondary {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 12px;
  border: 1px solid var(--secondary-border);
  color: var(--secondary-text);
  text-decoration: none;
  font-size: 14px;
}

.secondary.disabled {
  opacity: 0.5;
  pointer-events: none;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  z-index: 20;
}

.modal.open {
  display: flex;
}

.modal-card {
  max-width: 560px;
  width: 100%;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  padding: 20px 22px;
  box-shadow: var(--card-shadow);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}

.modal-header h2 {
  margin: 0;
  font-size: 18px;
}

.help-list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

@media (max-width: 640px) {
  .card {
    padding: 18px;
  }

  .header-top {
    flex-direction: column;
    align-items: flex-start;
  }
}