/* ==========================================================================
   username-generator.com — site design system (dark / tech theme)
   Loaded after Bootstrap 5 (CDN). Bootstrap supplies the grid/utilities;
   everything visual/brand-specific lives here.
   ========================================================================== */

:root {
  --bg: #090d12;
  --bg-alt: #0d131a;
  --surface: #11171f;
  --surface-2: #171e28;
  --ink: #e7edf3;
  --ink-muted: #8b98a8;
  --ink-faint: #5b6675;
  --border: #232c38;
  --border-soft: #1a212b;

  --accent-usernames: #34d399;
  --accent-realistic: #22d3ee;
  --accent-passwords: #a78bfa;
  --accent: var(--accent-usernames);
  --on-accent: #071008;

  --success: #4ade80;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.45);
  --shadow-focus: 0 0 0 3px color-mix(in srgb, var(--accent) 30%, transparent);
  --glow: 0 0 24px color-mix(in srgb, var(--accent) 22%, transparent);

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

body[data-accent="realistic"] { --accent: var(--accent-realistic); }
body[data-accent="passwords"] { --accent: var(--accent-passwords); }

@supports not (color: color-mix(in srgb, red, blue)) {
  :root {
    --shadow-focus: 0 0 0 3px rgba(52, 211, 153, 0.3);
    --glow: 0 0 24px rgba(52, 211, 153, 0.2);
  }
}

/* ---------- base ---------- */

html { scroll-behavior: smooth; }

body {
  background:
    radial-gradient(circle at 18% 0%, color-mix(in srgb, var(--accent-usernames) 7%, transparent), transparent 42%),
    radial-gradient(circle at 82% 12%, color-mix(in srgb, var(--accent-passwords) 6%, transparent), transparent 40%),
    var(--bg);
  background-attachment: fixed;
  color: var(--ink);
  font-family: var(--font-sans);
  padding-top: 0;
  max-width: none;
  margin: 0;
  -webkit-font-smoothing: antialiased;
  overflow-wrap: break-word;
}

.page-wrap {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 20px;
}

h1, h2, h3, h4 {
  font-family: var(--font-sans);
  color: var(--ink);
  font-weight: 700;
}

a { color: var(--accent); }

.text-muted-2 { color: var(--ink-muted); }

.notice-warning { color: #f59e0b; }

::selection { background: color-mix(in srgb, var(--accent) 35%, transparent); color: var(--ink); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ---------- navbar ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-soft);
}

.site-nav {
  max-width: 980px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.brand:hover { color: var(--ink); }

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent-usernames), var(--accent-realistic) 55%, var(--accent-passwords));
  color: #071008;
  flex: none;
  box-shadow: 0 0 18px color-mix(in srgb, var(--accent-usernames) 35%, transparent);
}

.brand-mark svg { width: 18px; height: 18px; }

.brand-word small {
  display: block;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.68rem;
  color: var(--ink-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav-tools {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.nav-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border-radius: 999px;
  text-decoration: none;
  color: var(--ink-muted);
  font-size: 0.92rem;
  font-weight: 600;
  border: 1px solid transparent;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.nav-pill svg { width: 15px; height: 15px; flex: none; }

.nav-pill:hover {
  background: var(--surface-2);
  color: var(--ink);
}

.nav-pill.is-active {
  background: color-mix(in srgb, var(--accent) 14%, var(--surface-2));
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 35%, transparent);
}

/* ---------- hero ---------- */

.hero {
  padding: 48px 0 8px;
  text-align: center;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 12%, var(--surface-2));
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  line-height: 1.15;
  margin: 0 0 14px;
}

.hero h1 .accent-word {
  color: var(--accent);
  text-shadow: 0 0 30px color-mix(in srgb, var(--accent) 45%, transparent);
}

.hero p.page_desc {
  max-width: 620px;
  margin: 0 auto;
  text-align: center;
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--ink-muted);
}

/* ---------- results board ---------- */

.board-wrap { margin-top: 28px; }

.board {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 22px;
}

.board::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 45%, transparent), transparent 40%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 10px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.result-card {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  background: var(--surface-2);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 10px 8px 10px 14px;
  transition: box-shadow 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
  animation: result-pop-in 0.4s cubic-bezier(0.22, 1, 0.36, 1) backwards;
  animation-delay: calc(var(--i, 0) * 70ms);
}

@keyframes result-pop-in {
  0% { opacity: 0; transform: scale(0.5) translateY(8px); }
  70% { opacity: 1; transform: scale(1.04) translateY(0); }
  100% { opacity: 1; transform: scale(1) translateY(0); }
}

.result-card--top-pick {
  background: color-mix(in srgb, #d9b84e 9%, var(--surface-2));
  border-color: color-mix(in srgb, #d9b84e 40%, transparent);
  animation:
    result-pop-in 0.4s cubic-bezier(0.22, 1, 0.36, 1) backwards,
    top-pick-fade 4.5s ease-in-out infinite;
  animation-delay: calc(var(--i, 0) * 70ms), calc(var(--i, 0) * 70ms + 0.4s);
}

@media (prefers-reduced-motion: reduce) {
  .result-card,
  .result-card--top-pick,
  .result-card--rare,
  .rare-badge {
    animation: none;
  }
}

.result-card--top-pick .result-text { color: #f0d375; }

@keyframes top-pick-fade {
  0%, 100% { box-shadow: 0 0 10px 0 rgba(217, 184, 78, 0.08); }
  50% { box-shadow: 0 0 16px 2px rgba(217, 184, 78, 0.28); }
}

.top-pick-badge {
  position: absolute;
  top: -10px;
  left: 12px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 999px;
  background: #d9b84e;
  color: #241c04;
  font-family: var(--font-sans);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.35);
}

.top-pick-badge svg { width: 10px; height: 10px; }

.result-card--rare {
  animation:
    result-pop-in 0.4s cubic-bezier(0.22, 1, 0.36, 1) backwards,
    rare-flash 1.1s ease-in-out infinite;
  animation-delay: calc(var(--i, 0) * 70ms), calc(var(--i, 0) * 70ms + 0.4s);
}

@keyframes rare-flash {
  0%, 100% {
    border-color: rgba(34, 197, 94, 0.4);
    box-shadow: 0 0 6px 0 rgba(34, 197, 94, 0.2);
    transform: scale(1);
  }
  50% {
    border-color: #4ade80;
    box-shadow: 0 0 28px 6px rgba(34, 197, 94, 0.85);
    transform: scale(1.035);
  }
}

.rare-badge {
  animation: rare-badge-pulse 1.1s ease-in-out infinite;
}

@keyframes rare-badge-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.25); }
}

.rare-badge {
  position: absolute;
  top: -8px;
  left: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 999px;
  background: #22c55e;
  color: #06200f;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.35);
}

.rare-badge svg { width: 10px; height: 10px; }

.lucky-box-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, #22c55e 14%, var(--surface-2));
  border: 1px solid rgba(34, 197, 94, 0.4);
  color: #4ade80;
  font-weight: 600;
  font-size: 0.95rem;
  text-align: center;
  opacity: 0;
  animation: lucky-box-reveal 0.5s ease-out 2.1s forwards;
}

.lucky-box-banner svg {
  width: 16px;
  height: 16px;
  flex: none;
  animation: rare-badge-pulse 1.1s ease-in-out infinite 2.1s;
}

@keyframes lucky-box-reveal {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .lucky-box-banner { animation: none; opacity: 1; }
  .lucky-box-banner svg { animation: none; }
}

.result-card:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 20%, transparent), var(--shadow-sm);
  transform: translateY(-1px);
}

.result-text {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.94rem;
  letter-spacing: 0.01em;
  color: #d9b84e;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.result-text a.a_pre,
.result-text a.a_suf {
  color: inherit;
  text-decoration: none;
}

.is-admin .result-text a.a_pre:hover,
.is-admin .result-text a.a_suf:hover {
  text-decoration: underline;
  color: #f87171;
}

.copy-btn {
  flex: none;
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--ink-faint);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.copy-btn svg { width: 15px; height: 15px; pointer-events: none; }

.copy-btn:hover {
  background: color-mix(in srgb, var(--accent) 16%, var(--surface));
  color: var(--accent);
}

.copy-btn.is-copied {
  background: color-mix(in srgb, var(--success) 20%, var(--surface));
  color: var(--success);
}

.generator-controls {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.control-field-spacer { visibility: hidden; }

.control-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.control-field-grow { flex: 1 1 220px; }

.control-field label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ink-muted);
}

.control-field select,
.control-field input,
.control-field textarea {
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-alt);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  min-height: 42px;
}

.control-field textarea {
  resize: vertical;
  line-height: 1.4;
}

.control-field select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238b98a8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 16px;
  padding-right: 34px;
  cursor: pointer;
}

.control-field input::placeholder,
.control-field textarea::placeholder { color: var(--ink-faint); }

.control-field select:focus,
.control-field input:focus,
.control-field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: var(--shadow-focus);
  background-color: var(--surface-2);
}

.generator-controls .btn-generate {
  border: none;
  cursor: pointer;
  min-height: 42px;
}

.generator-controls .btn-generate:disabled {
  opacity: 0.75;
  cursor: wait;
  filter: none;
  transform: none;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.spin { animation: spin 0.85s linear infinite; }

.board-thinking {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 40px 0;
  color: var(--ink-muted);
  font-size: 0.95rem;
}

.board-thinking svg { width: 20px; height: 20px; color: var(--accent); }

.board-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 52px 20px;
  color: var(--ink-muted);
  font-size: 0.98rem;
  text-align: center;
}

.board-empty svg { width: 32px; height: 32px; color: var(--accent); opacity: 0.8; }

.board.is-loading .result-grid,
.board.is-loading .board-empty { display: none; }

.control-hint {
  color: var(--ink-faint);
  font-size: 0.82rem;
  margin: 0 0 18px;
}

.board-actions {
  display: flex;
  justify-content: center;
  margin-top: 20px;
}

.btn-generate {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 26px;
  border-radius: 999px;
  border: none;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  box-shadow: var(--glow);
  transition: transform 0.12s ease, box-shadow 0.12s ease, filter 0.12s ease;
}

.btn-generate:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 34px color-mix(in srgb, var(--accent) 40%, transparent);
  color: var(--on-accent);
  transform: translateY(-1px);
}

.btn-generate:active { transform: translateY(0); }

.btn-generate svg {
  width: 16px;
  height: 16px;
  transition: transform 0.3s ease;
}

.btn-generate:active svg { transform: rotate(140deg); }

/* ---------- stat + info sections ---------- */

.stat-pill {
  display: inline-block;
  color: var(--accent);
  font-weight: 700;
  font-family: var(--font-mono);
}

.info-section { max-width: 980px; margin: 0 auto; padding: 0 20px; }

.info-block {
  padding: 22px 0;
  border-top: 1px solid var(--border-soft);
}

.info-block:first-of-type { border-top: none; padding-top: 34px; }

.info-block h4 {
  font-size: 1.08rem;
  margin: 0 0 8px;
}

.info-block p, .info-block span {
  color: var(--ink-muted);
  font-size: 0.98rem;
  line-height: 1.65;
}

.info-block a { text-decoration-color: color-mix(in srgb, var(--accent) 50%, transparent); }

/* ---------- add-ideas form ---------- */

.idea-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px;
  margin-top: 4px;
}

.idea-fields {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.idea-field { flex: 1 1 200px; min-width: 0; }

.idea-field label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink-muted);
  margin-bottom: 6px;
}

.idea-field input.input {
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-alt);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--ink);
}

.idea-field input.input::placeholder { color: var(--ink-faint); }

.idea-field input.input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: var(--shadow-focus);
  background: var(--surface-2);
}

.idea-card .btn-submit-idea {
  margin-top: 16px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--ink);
  font-weight: 600;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.idea-card .btn-submit-idea:hover {
  border-color: var(--accent);
  color: var(--accent);
}

#add_result { margin-top: 12px; font-size: 0.92rem; color: var(--success); }

/* ---------- footer ---------- */

.site-footer {
  margin-top: 56px;
  border-top: 1px solid var(--border-soft);
  background: var(--surface);
}

.footer-inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 28px 20px 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
  justify-content: space-between;
}

.footer-brand {
  font-weight: 700;
  color: var(--ink);
  font-size: 0.95rem;
}

.footer-tagline {
  color: var(--ink-muted);
  font-size: 0.85rem;
  margin-top: 2px;
}

.footer-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--ink-muted);
  text-decoration: none;
  font-size: 0.88rem;
}

.footer-links a:hover { color: var(--accent); }

.footer-copy {
  color: var(--ink-faint);
  font-size: 0.82rem;
  font-family: var(--font-mono);
}

.footer-extra {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 20px 20px;
  color: var(--ink-faint);
  font-size: 0.78rem;
}

.footer-extra a {
  color: var(--ink-faint);
  text-decoration: underline;
  text-decoration-color: var(--border);
}

.footer-extra a:hover { color: var(--ink-muted); }

/* ---------- responsive ---------- */

@media (max-width: 640px) {
  .site-nav { padding: 12px 16px; }
  .hero { padding: 32px 0 4px; }
  .board { padding: 16px; border-radius: var(--radius-md); }
  .result-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
  .footer-inner { flex-direction: column; align-items: flex-start; text-align: left; }
  .control-field textarea { min-height: 128px; }
}