/* PassGen — style.css
   Aesthetic: Cryptex — dark, minimal, precise
   Fonts: Syne (display), Fira Code (passwords), DM Sans (UI)
   ────────────────────────────────────────────────────── */

:root {
  --bg:          #0c0c14;
  --surface:     #12121e;
  --surface-2:   #1a1a2a;
  --surface-3:   #22223a;
  --border:      #2a2a44;
  --border-hi:   #3e3e68;

  --accent:      #6d6afe;
  --accent-dim:  #4e4ec0;
  --accent-glow: rgba(109,106,254,0.18);

  --success:     #22d3b8;
  --warning:     #f59e0b;
  --danger:      #f87171;

  --text:        #dde2f0;
  --text-muted:  #6b7390;
  --text-dim:    #3e4260;

  --font-display: "Syne", sans-serif;
  --font-ui:      "DM Sans", sans-serif;
  --font-mono:    "Fira Code", "Cascadia Code", monospace;

  --radius-sm:   6px;
  --radius:      10px;
  --radius-lg:   16px;

  --transition:  0.18s ease;
}

/* ── Reset & base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Dot-grid background texture */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle, rgba(109,106,254,0.06) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
  z-index: 0;
}

/* ── Layout ── */
.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

.skip-link {
  position: absolute;
  top: -99px;
  left: 0;
  background: var(--accent);
  color: #fff;
  padding: 8px 16px;
  border-radius: 0 0 var(--radius) 0;
  font-size: 13px;
  z-index: 100;
  transition: top 0.2s;
}
.skip-link:focus { top: 0; }

/* ── Header ── */
.site-header {
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(12,12,20,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: var(--text);
}
.logo-icon {
  font-size: 22px;
  color: var(--accent);
  line-height: 1;
}

.header-nav { display: flex; gap: 20px; align-items: center; }

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color var(--transition);
}
.nav-link:hover { color: var(--text); }

/* ── Hero ── */
.hero {
  position: relative;
  padding: 64px 0 48px;
  overflow: hidden;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    transparent 40%,
    rgba(109,106,254,0.04) 60%,
    transparent 80%
  );
  pointer-events: none;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 18px;
}
.hero-title em {
  font-style: normal;
  color: var(--accent);
  position: relative;
}
.hero-title em::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
  opacity: 0.4;
  border-radius: 2px;
}

.hero-sub {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.8;
  max-width: 540px;
}
.text-link {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(109,106,254,0.3);
  transition: border-color var(--transition);
}
.text-link:hover { border-color: var(--accent); }

/* ── App shell ── */
.app-shell { padding-bottom: 80px; }

/* ── Tab bar ── */
.tab-bar {
  display: flex;
  gap: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 5px;
  margin-bottom: 16px;
}

.tab-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  border: none;
  border-radius: var(--radius);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}
.tab-btn:hover { color: var(--text); background: var(--surface-2); }
.tab-btn--active {
  background: var(--surface-3);
  color: var(--text);
  box-shadow: 0 0 0 1px var(--border-hi);
}
.tab-icon {
  color: var(--accent);
  font-size: 13px;
}

/* ── Settings card ── */
.settings-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 16px;
}

.tab-panel { display: none; }
.tab-panel--active { display: block; }

.settings-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(42,42,68,0.5);
}
.settings-row:last-child { border-bottom: none; padding-bottom: 0; }
.settings-row:first-child { padding-top: 0; }

.setting-label {
  flex: 0 0 140px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.setting-hint {
  cursor: help;
  color: var(--text-dim);
  font-size: 12px;
}

/* Slider */
.slider-group {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
}
input[type="range"] {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: var(--surface-3);
  border-radius: 2px;
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; height: 18px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 0 0 0 var(--accent-glow);
}
input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
  box-shadow: 0 0 0 6px var(--accent-glow);
}
input[type="range"]::-moz-range-thumb {
  width: 18px; height: 18px;
  background: var(--accent);
  border: none;
  border-radius: 50%;
  cursor: pointer;
}

.slider-val {
  flex: 0 0 72px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  font-family: var(--font-mono);
  text-align: right;
}

/* Checkboxes */
.check-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  flex: 1;
}
.check-group--grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }

.check-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text);
  cursor: pointer;
  user-select: none;
}
input[type="checkbox"] {
  width: 16px; height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
  flex-shrink: 0;
}

/* Select */
.select-input {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 13px;
  padding: 6px 10px;
  cursor: pointer;
  outline: none;
  transition: border-color var(--transition);
  flex: 1;
  max-width: 280px;
}
.select-input:focus { border-color: var(--accent); }

/* Info note */
.info-note {
  margin-top: 14px;
  padding: 8px 12px;
  background: rgba(109,106,254,0.07);
  border: 1px solid rgba(109,106,254,0.15);
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ── Generate row ── */
.gen-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}

.gen-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 28px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.2px;
}
.gen-btn:hover { background: var(--accent-dim); transform: translateY(-1px); }
.gen-btn:active { transform: translateY(0) scale(0.98); }
.gen-btn--pulse { animation: pulse 0.3s ease; }

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.04); }
  100% { transform: scale(1); }
}

.gen-hint {
  font-size: 12px;
  color: var(--text-dim);
}
kbd {
  display: inline-block;
  padding: 2px 7px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}

/* ── Result cards ── */
.results { display: flex; flex-direction: column; gap: 12px; margin-bottom: 40px; }

.result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
  transition: border-color var(--transition);
  animation: slide-in 0.2s ease;
}
.result-card:hover { border-color: var(--border-hi); }
.result-card--primary {
  border-color: var(--border-hi);
  box-shadow: 0 0 0 1px var(--accent-glow), inset 0 1px 0 rgba(109,106,254,0.08);
}

@keyframes slide-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Password line */
.pw-line {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.pw-value {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--text);
  flex: 1;
  word-break: break-all;
  letter-spacing: 0.3px;
  line-height: 1.5;
}

.copy-btn {
  flex-shrink: 0;
  width: 34px; height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
}
.copy-btn:hover { background: var(--surface-3); color: var(--text); border-color: var(--border-hi); }
.copy-btn--done { background: rgba(34,211,184,0.1); border-color: var(--success); color: var(--success); }

/* Meta row */
.pw-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.pw-meta-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* Entropy bar */
.entropy-bar {
  display: flex;
  align-items: center;
  gap: 3px;
}
.entropy-seg {
  width: 18px;
  height: 6px;
  background: var(--surface-3);
  border-radius: 3px;
  transition: background var(--transition);
}
.entropy-seg.filled.level-0 { background: var(--danger); }
.entropy-seg.filled.level-1 { background: var(--warning); }
.entropy-seg.filled.level-2 { background: #84cc16; }
.entropy-seg.filled.level-3 { background: var(--success); }
.entropy-seg.filled.level-4 { background: var(--accent); }

.entropy-label {
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}

/* Strength badge */
.strength-badge {
  font-size: 11px;
  font-weight: 500;
  padding: 2px 9px;
  border-radius: 999px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.strength--0 { background: rgba(248,113,113,0.12); color: var(--danger); }
.strength--1 { background: rgba(245,158,11,0.12);  color: var(--warning); }
.strength--2 { background: rgba(132,204,22,0.12);  color: #84cc16; }
.strength--3 { background: rgba(34,211,184,0.12);  color: var(--success); }
.strength--4 { background: var(--accent-glow);     color: var(--accent); }

.pw-bits {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}

.pw-time {
  font-size: 12px;
  color: var(--text-dim);
}

/* Warnings */
.pw-warnings {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.warn-badge {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 12px;
  color: var(--warning);
  line-height: 1.5;
  padding: 6px 10px;
  background: rgba(245,158,11,0.06);
  border-left: 2px solid var(--warning);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.warn-badge svg { flex-shrink: 0; margin-top: 1px; }

/* Regen btn */
.regen-btn {
  margin-top: 12px;
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 12px;
  cursor: pointer;
  padding: 0;
  font-family: var(--font-ui);
  transition: color var(--transition);
}
.regen-btn:hover { color: var(--accent); }

/* ── API Docs ── */
.api-docs {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 24px;
}

.api-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  background: none;
  border: none;
  color: var(--text);
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--transition);
}
.api-toggle:hover { background: var(--surface-2); }
.chevron { transition: transform 0.25s ease; color: var(--text-muted); }

.api-body { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.api-body--open { max-height: 2000px; }

.api-body > * { padding: 0 24px 24px; }
.api-intro { font-size: 14px; color: var(--text-muted); margin-bottom: 16px; }

.api-block { margin-bottom: 16px; }
.api-block-label { font-size: 12px; color: var(--text-muted); margin-bottom: 6px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.5px; }

.api-method {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  font-size: 14px;
}
.api-method code {
  font-family: var(--font-mono);
  color: var(--text);
}
.badge-post {
  background: rgba(109,106,254,0.15);
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  letter-spacing: 0.5px;
}

.code-block {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--text);
}
.code-block code { color: inherit; }

/* ── Footer ── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  margin-top: 40px;
}
.site-footer p {
  font-size: 12px;
  color: var(--text-dim);
  text-align: center;
  line-height: 2;
}
.footer-link {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition);
}
.footer-link:hover { color: var(--accent); }

/* ── Focus styles ── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ── Responsive ── */
@media (max-width: 560px) {
  .tab-btn { font-size: 12px; padding: 9px 8px; gap: 5px; }
  .tab-icon { display: none; }
  .setting-label { flex: 0 0 110px; font-size: 12px; }
  .settings-card { padding: 16px; }
  .pw-meta { flex-direction: column; align-items: flex-start; gap: 10px; }
  .check-group--grid { grid-template-columns: 1fr; }
  .gen-btn { width: 100%; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ── PWD additions ── */

.logo-sub {
  font-size: 11px;
  color: var(--text-dim);
  font-family: var(--font-ui);
  font-weight: 400;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-left: 4px;
  align-self: flex-end;
  padding-bottom: 2px;
}

/* l33t badge */
.leet-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  background: rgba(109,106,254,0.12);
  color: var(--accent);
  padding: 1px 7px;
  border-radius: 4px;
  border: 1px solid rgba(109,106,254,0.25);
  letter-spacing: 0.5px;
}

/* Entropy explainer */
.entropy-explainer {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 20px;
}
.explainer-title {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text);
}
.explainer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 14px;
}
.explainer-card {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}
.explainer-card strong {
  display: block;
  color: var(--text);
  font-weight: 500;
  margin-bottom: 4px;
}
.explainer-icon {
  font-size: 16px;
  color: var(--accent);
  margin-bottom: 6px;
}
.explainer-note {
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.6;
}