:root {
  --bg-color: #0f172a;
  --card-bg: #1e293b;
  --card-border: #334155;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --danger: #ef4444;
  --radius: 12px;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.5;
  min-height: 100vh;
}

/* --- Barre de navigation --- */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background-color: var(--card-bg);
  border-bottom: 1px solid var(--card-border);
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
}

.logo span {
  font-size: 0.75rem;
  color: var(--accent);
  background: rgba(59, 130, 246, 0.1);
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  margin-left: 0.5rem;
}

.navbar nav {
  display: flex;
  gap: 0.5rem;
}

.nav-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s ease;
}

.nav-btn:hover {
  color: var(--text-main);
  background-color: rgba(255, 255, 255, 0.05);
}

.nav-btn.active {
  color: var(--text-main);
  background-color: var(--card-border);
  border-color: var(--accent);
}

/* --- Layout principal --- */
#app-viewport {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 1rem;
}

/* --- Bento Grid --- */
.bento-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.bento-card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.bento-card.full-width {
  grid-column: 1 / -1;
}

.bento-card h2 {
  font-size: 1.1rem;
  color: var(--text-main);
  border-bottom: 1px solid var(--card-border);
  padding-bottom: 0.5rem;
}

/* --- Formulaires & Champs --- */
.field-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

label {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
}

input[type="text"],
input[type="password"],
input[type="file"],
select,
textarea {
  width: 100%;
  background-color: var(--bg-color);
  border: 1px solid var(--card-border);
  color: var(--text-main);
  padding: 0.75rem;
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.2s ease;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
}

textarea {
  resize: vertical;
}

/* --- Toggle Switch --- */
.toggle-control {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  user-select: none;
}

.toggle-control input[type="checkbox"] {
  width: 1.2rem;
  height: 1.2rem;
  accent-color: var(--accent);
  cursor: pointer;
}

.toggle-label {
  font-size: 0.9rem;
  color: var(--text-main);
}

/* --- Boutons --- */
.btn-primary {
  background-color: var(--accent);
  color: #fff;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease;
  width: 100%;
}

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

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* --- Zone de texte généré (Output) --- */
.response-box {
  background-color: var(--bg-color);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 1.25rem;
  min-height: 200px;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.95rem;
  color: #e2e8f0;
}

.error {
  color: var(--danger);
  font-weight: 500;
}

.setting-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
}