/* ============================================================
   Local Password Generator & Audit — Styles
   Theme: Dark mode with Violet Purple palette
   Primary: #8B5CF6  Secondary: #A78BFA  Accent: #F97316
   Background: #0F0A1E  Border Radius: 12px
   Font: Inter / system-ui  Animations: 200ms ease
   ============================================================ */

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

:root {
  --primary: #8B5CF6;
  --primary-hover: #A78BFA;
  --primary-glow: rgba(139, 92, 246, 0.25);
  --secondary: #A78BFA;
  --accent: #F97316;
  --accent-hover: #FB923C;
  --bg: #0F0A1E;
  --bg-surface: #1A1333;
  --bg-elevated: #251D45;
  --border: rgba(167, 139, 250, 0.15);
  --border-focus: rgba(139, 92, 246, 0.5);
  --text: #F1F5F9;
  --text-muted: #94A3B8;
  --text-dim: #64748B;
  --success: #22C55E;
  --warning: #F59E0B;
  --error: #EF4444;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 200ms ease;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
}

html { font-size: 16px; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* --- Header --- */
.header {
  background: linear-gradient(135deg, rgba(139,92,246,0.1), rgba(249,115,22,0.05));
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem;
  backdrop-filter: blur(12px);
}
.header-inner {
  max-width: 900px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: 0.75rem; }
.logo-icon { color: var(--primary); filter: drop-shadow(0 0 8px var(--primary-glow)); }
.logo h1 {
  font-size: 1.15rem; font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.badge {
  font-size: 0.7rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em;
  background: rgba(34,197,94,0.15); color: var(--success);
  padding: 0.25rem 0.75rem; border-radius: 99px; border: 1px solid rgba(34,197,94,0.25);
}

/* --- Main --- */
.main { flex: 1; padding: 1.5rem; max-width: 900px; margin: 0 auto; width: 100%; }

/* --- Tabs --- */
.tabs {
  display: flex; gap: 4px; background: var(--bg-surface);
  border-radius: var(--radius); padding: 4px; margin-bottom: 1.5rem;
  overflow-x: auto;
}
.tab {
  font-family: var(--font); font-size: 0.82rem; font-weight: 500;
  padding: 0.5rem 1rem; border: none; border-radius: var(--radius-sm);
  background: transparent; color: var(--text-muted); cursor: pointer;
  transition: all var(--transition); white-space: nowrap;
}
.tab:hover { color: var(--text); }
.tab.active {
  background: var(--primary); color: #fff; box-shadow: 0 2px 8px var(--primary-glow);
}

/* --- Panels --- */
.panel { display: none; animation: fadeIn 250ms ease; }
.panel.active { display: block; }

/* --- Password Display Card --- */
.password-display-card {
  background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.25rem; margin-bottom: 1.25rem;
}
.password-output-row { display: flex; gap: 0.5rem; margin-bottom: 0.75rem; }
.password-output {
  flex: 1; font-family: 'Courier New', monospace; font-size: 1.1rem;
  background: var(--bg); color: var(--accent); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 0.75rem 1rem;
  letter-spacing: 0.05em; transition: border-color var(--transition);
}
.password-output:focus { outline: none; border-color: var(--border-focus); }
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border: 1px solid var(--border);
  border-radius: var(--radius-sm); background: var(--bg-surface);
  color: var(--text-muted); cursor: pointer; transition: all var(--transition);
}
.icon-btn:hover { background: var(--bg-elevated); color: var(--text); border-color: var(--primary); }

/* --- Entropy Bar --- */
.entropy-bar-row { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.5rem; }
.entropy-bar {
  flex: 1; height: 8px; background: var(--bg); border-radius: 99px; overflow: hidden;
}
.entropy-fill {
  height: 100%; width: 0; border-radius: 99px;
  background: linear-gradient(90deg, var(--error), var(--warning), var(--success));
  transition: width 400ms ease;
}
.entropy-label { font-size: 0.8rem; color: var(--text-muted); white-space: nowrap; min-width: 60px; }
.strength-badge {
  display: inline-block; font-size: 0.8rem; font-weight: 600;
  padding: 0.25rem 0.75rem; border-radius: 99px;
  background: var(--bg-elevated); color: var(--text-dim);
}

/* --- Controls --- */
.controls-grid { margin-bottom: 1.25rem; display: flex; flex-direction: column; gap: 1rem; }
.control-group label { font-size: 0.85rem; font-weight: 500; color: var(--text-muted); display: block; margin-bottom: 0.35rem; }
.control-group input[type="range"] {
  width: 100%; accent-color: var(--primary); cursor: pointer;
}
.checkbox-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
.checkbox-label {
  display: flex; align-items: center; gap: 0.5rem; font-size: 0.85rem;
  color: var(--text-muted); cursor: pointer; transition: color var(--transition);
}
.checkbox-label:hover { color: var(--text); }
.checkbox-label input[type="checkbox"] { accent-color: var(--primary); cursor: pointer; }
.text-input {
  font-family: var(--font); font-size: 0.9rem; background: var(--bg);
  color: var(--text); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 0.5rem 0.75rem; width: 80px; transition: border-color var(--transition);
}
.text-input:focus { outline: none; border-color: var(--border-focus); }

/* --- Buttons --- */
.primary-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  font-family: var(--font); font-size: 0.9rem; font-weight: 600;
  padding: 0.75rem 1.5rem; border: none; border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--primary), #7C3AED);
  color: #fff; cursor: pointer; transition: all var(--transition);
  box-shadow: 0 4px 16px var(--primary-glow); width: 100%;
}
.primary-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 24px var(--primary-glow); }
.primary-btn:active { transform: translateY(0); }
.secondary-btn {
  font-family: var(--font); font-size: 0.8rem; font-weight: 500;
  padding: 0.5rem 1rem; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: transparent; color: var(--text-muted); cursor: pointer;
  transition: all var(--transition);
}
.secondary-btn:hover { color: var(--error); border-color: var(--error); }

/* --- Audit --- */
.audit-input-card {
  background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.25rem; margin-bottom: 1.25rem;
  display: flex; flex-direction: column; gap: 0.75rem;
}
.password-input {
  font-family: 'Courier New', monospace; font-size: 1rem;
  background: var(--bg); color: var(--text); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 0.75rem 1rem;
  transition: border-color var(--transition);
}
.password-input:focus { outline: none; border-color: var(--border-focus); box-shadow: 0 0 0 3px var(--primary-glow); }
.audit-results { display: flex; flex-direction: column; gap: 1rem; animation: fadeIn 300ms ease; }
.audit-result-card {
  background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.25rem;
}
.audit-result-card h3 { font-size: 0.85rem; font-weight: 600; color: var(--secondary); margin-bottom: 0.75rem; text-transform: uppercase; letter-spacing: 0.04em; }
.check-list { list-style: none; display: flex; flex-direction: column; gap: 0.4rem; }
.check-list li { font-size: 0.85rem; display: flex; align-items: flex-start; gap: 0.5rem; }
.check-pass { color: var(--success); }
.check-fail { color: var(--error); }
.check-warn { color: var(--warning); }
.dict-score-display { font-size: 0.9rem; color: var(--text-muted); }

/* --- Bulk Audit --- */
.bulk-card {
  background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.25rem; margin-bottom: 1.25rem;
  display: flex; flex-direction: column; gap: 0.75rem;
}
.bulk-card label { font-size: 0.85rem; font-weight: 500; color: var(--text-muted); }
.bulk-textarea {
  font-family: 'Courier New', monospace; font-size: 0.85rem;
  background: var(--bg); color: var(--text); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 0.75rem 1rem; resize: vertical;
  transition: border-color var(--transition);
}
.bulk-textarea:focus { outline: none; border-color: var(--border-focus); }
.bulk-results { display: flex; flex-direction: column; gap: 0.5rem; }
.bulk-item {
  background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 0.75rem 1rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  font-size: 0.85rem;
}
.bulk-item-pw { font-family: 'Courier New', monospace; color: var(--accent); word-break: break-all; flex: 1; }
.bulk-item-score { white-space: nowrap; font-weight: 600; }

/* --- History --- */
.history-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1rem; }
.history-header h3 { font-size: 0.95rem; font-weight: 600; color: var(--text); }
.history-list { display: flex; flex-direction: column; gap: 0.5rem; }
.history-item {
  background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 0.75rem 1rem;
  display: flex; align-items: center; justify-content: space-between; gap: 0.75rem;
}
.history-item-pw { font-family: 'Courier New', monospace; font-size: 0.85rem; color: var(--accent); word-break: break-all; flex: 1; }
.history-item-meta { font-size: 0.75rem; color: var(--text-dim); white-space: nowrap; }
.empty-state { text-align: center; color: var(--text-dim); font-size: 0.9rem; padding: 2rem 1rem; }

/* --- Toast --- */
.toast {
  position: fixed; bottom: 2rem; left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--bg-elevated); color: var(--text);
  padding: 0.75rem 1.5rem; border-radius: var(--radius);
  border: 1px solid var(--border); font-size: 0.85rem; font-weight: 500;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  opacity: 0; pointer-events: none; transition: all 300ms ease; z-index: 999;
}
.toast.visible { opacity: 1; transform: translateX(-50%) translateY(0); pointer-events: auto; }

/* --- Footer --- */
.footer {
  text-align: center; padding: 1rem 1.5rem; border-top: 1px solid var(--border);
  color: var(--text-dim); font-size: 0.8rem; flex-shrink: 0;
}

.hidden { display: none !important; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }

@media (max-width: 600px) {
  .main { padding: 0.75rem; }
  .tabs { gap: 2px; }
  .tab { padding: 0.4rem 0.6rem; font-size: 0.75rem; }
  .checkbox-grid { grid-template-columns: 1fr; }
  .password-output { font-size: 0.9rem; }
  .bulk-item { flex-direction: column; align-items: flex-start; }
}