/* ============================================================
   SecureIdent — index.css
   Theme: Dark Security Terminal · Industrial Precision
   ============================================================ */

/* ── Custom Properties ──────────────────────────────────── */
:root {
  --bg:            #07090d;
  --bg-surface:    #0c1018;
  --bg-card:       #0f1520;
  --bg-hover:      #141d2b;
  --bg-input:      #0a0f18;

  --border:        #1a2535;
  --border-bright: #253548;

  --accent:        #0dff8c;
  --accent-dim:    rgba(13, 255, 140, 0.12);
  --accent-glow:   rgba(13, 255, 140, 0.35);
  --accent-2:      #00cfff;
  --accent-2-dim:  rgba(0, 207, 255, 0.1);

  --text-primary:  #d0dce8;
  --text-secondary:#6b8299;
  --text-muted:    #3a4f63;
  --text-code:     #a6e3ff;

  --red:           #ff4d6a;
  --yellow:        #f5c842;

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

  --font-mono: 'Geist Mono', 'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', 'Liberation Mono', monospace;
  --font-ui:   'Geist', 'SF Pro Display', 'Helvetica Neue', 'Segoe UI', system-ui, sans-serif;

  --transition: 160ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

@font-face {
  font-family: 'Geist';
  src: url('./assets/fonts/Geist[wght].woff2') format('woff2');
  font-weight: 100 900;
  font-display: swap; /* Prevents invisible text while the font is loading */
  font-style: normal;
}

@font-face {
  font-family: 'Geist Mono';
  src: url('./assets/fonts/GeistMono[wght].woff2') format('woff2');
  font-weight: 100 900;
  font-display: swap;
  font-style: normal;
}

html {
  font-size: 15px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

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

/* ── Noise Overlay ──────────────────────────────────────── */
.noise-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
}

/* ── Header ─────────────────────────────────────────────── */
.site-header {
  position: relative;
  z-index: 10;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #0a0e15 0%, var(--bg) 100%);
  padding: 1.25rem 2rem 1rem;
}

/* Subtle top accent bar */
.site-header::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), var(--accent-2), transparent);
  opacity: 0.7;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text-primary);
}

.logo-mark {
  color: var(--accent);
  display: flex;
  align-items: center;
  flex-shrink: 0;
  filter: drop-shadow(0 0 6px var(--accent-glow));
}

.logo-text {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.status-badge {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(13, 255, 140, 0.2);
  padding: 0.25rem 0.6rem;
  border-radius: 2px;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent-glow);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}

.version-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
}

.header-tagline {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  letter-spacing: 0.01em;
}

/* ── Main Content ───────────────────────────────────────── */
.main-content {
  flex: 1;
  position: relative;
  z-index: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 2.5rem 2rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* ── App Status / Loading ───────────────────────────────── */
.app-status {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.app-status.is-error {
  color: var(--red);
}

.app-status.is-hidden {
  display: none;
}

.status-inner {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.spinner {
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--border-bright);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

.app-status.is-error .spinner {
  display: none;
}

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

/* ── Generator Grid ─────────────────────────────────────── */
.generator-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  align-items: start;
}

.generator-grid[aria-hidden="true"] {
  display: none;
}

/* ── Cards ──────────────────────────────────────────────── */
.gen-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.gen-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--border-bright) 40%, var(--border-bright) 60%, transparent 100%);
}

.gen-card:hover {
  border-color: var(--border-bright);
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.4), 0 0 1px rgba(13, 255, 140, 0.05);
}

.card-header {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.card-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--accent);
  opacity: 0.7;
  font-weight: 600;
}

.card-title {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.card-desc {
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-top: 0.15rem;
}

/* ── Controls ───────────────────────────────────────────── */
.card-controls {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.control-row {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.control-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  cursor: default;
}

.control-value {
  color: var(--accent);
  min-width: 1.5ch;
  text-align: right;
}

/* ── Slider ─────────────────────────────────────────────── */
.slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
  transition: background var(--transition);
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid var(--bg-card);
  box-shadow: 0 0 8px var(--accent-glow);
  transition: box-shadow var(--transition), transform var(--transition);
}

.slider::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid var(--bg-card);
  box-shadow: 0 0 8px var(--accent-glow);
}

.slider:hover::-webkit-slider-thumb,
.slider:focus::-webkit-slider-thumb {
  box-shadow: 0 0 14px var(--accent-glow);
  transform: scale(1.15);
}

.slider::-webkit-slider-runnable-track {
  background: linear-gradient(90deg, var(--accent-dim), var(--border));
  border-radius: 2px;
}

/* ── Select ─────────────────────────────────────────────── */
.select-input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.45rem 0.7rem;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%236b8299' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.7rem center;
  padding-right: 2rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.select-input:focus,
.select-input:hover {
  border-color: var(--border-bright);
  box-shadow: 0 0 0 2px rgba(13, 255, 140, 0.07);
}

.select-input option {
  background: #121a24;
}

/* ── Number Input ───────────────────────────────────────── */
.num-input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 0.4rem 0.6rem;
  text-align: center;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  -moz-appearance: textfield;
}

.num-input::-webkit-outer-spin-button,
.num-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
}

.num-input:focus,
.num-input:hover {
  border-color: var(--border-bright);
  box-shadow: 0 0 0 2px rgba(13, 255, 140, 0.07);
}

.age-range-row {
  gap: 0.5rem;
}

.age-inputs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.age-field {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  flex: 1;
}

.age-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

.age-separator {
  color: var(--text-muted);
  font-family: var(--font-mono);
  flex-shrink: 0;
  padding-top: 1.1rem;
}

/* ── Generate Button ────────────────────────────────────── */
.gen-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.65rem 1rem;
  background: var(--accent-dim);
  border: 1px solid rgba(13, 255, 140, 0.25);
  border-radius: var(--radius);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition), color var(--transition);
  outline: none;
  user-select: none;
}

.gen-btn:hover {
  background: rgba(13, 255, 140, 0.18);
  border-color: rgba(13, 255, 140, 0.5);
  box-shadow: 0 0 16px rgba(13, 255, 140, 0.15);
}

.gen-btn:active {
  transform: translateY(1px);
  box-shadow: none;
}

.gen-btn:focus-visible {
  box-shadow: 0 0 0 2px var(--accent-glow);
}

.gen-btn .btn-icon {
  font-size: 0.95rem;
  line-height: 1;
  transition: transform 0.35s ease;
}

.gen-btn:hover .btn-icon {
  transform: rotate(180deg);
}

/* ── Results Area ───────────────────────────────────────── */
.results-area {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  min-height: 0;
}

.result-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.55rem 0.75rem;
  animation: fade-in-up 0.2s ease both;
}

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.result-item:nth-child(1)  { animation-delay: 0.00s; }
.result-item:nth-child(2)  { animation-delay: 0.04s; }
.result-item:nth-child(3)  { animation-delay: 0.08s; }
.result-item:nth-child(4)  { animation-delay: 0.12s; }
.result-item:nth-child(5)  { animation-delay: 0.16s; }
.result-item:nth-child(6)  { animation-delay: 0.20s; }
.result-item:nth-child(7)  { animation-delay: 0.24s; }
.result-item:nth-child(8)  { animation-delay: 0.28s; }
.result-item:nth-child(9)  { animation-delay: 0.32s; }
.result-item:nth-child(10) { animation-delay: 0.36s; }

.result-value {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-code);
  letter-spacing: 0.02em;
  word-break: break-all;
}

.copy-btn {
  flex-shrink: 0;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 4px;
  padding: 0.2rem 0.4rem;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.7rem;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
  white-space: nowrap;
}

.copy-btn:hover {
  color: var(--accent);
  border-color: rgba(13, 255, 140, 0.2);
  background: var(--accent-dim);
}

.copy-btn.copied {
  color: var(--accent);
  border-color: rgba(13, 255, 140, 0.3);
}

/* ── Generate All Strip ─────────────────────────────────── */
.generate-all-strip {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 1.2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}

.generate-all-strip::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.6;
}

.gen-all-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.9rem 2.5rem;
  background: var(--accent);
  border: none;
  border-radius: var(--radius);
  color: #040a0d;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: box-shadow var(--transition), transform var(--transition), opacity var(--transition);
  outline: none;
}

.gen-all-btn:hover {
  box-shadow: 0 0 20px var(--accent-glow);
  transform: translateY(-1px);
}

.gen-all-btn:active {
  transform: translateY(0);
  box-shadow: none;
}

.gen-all-btn:focus-visible {
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.gen-all-btn .btn-icon {
  font-size: 1.2rem;
}

.gen-all-note {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.5;
  max-width: 600px;
}

/* ── Footer ─────────────────────────────────────────────── */
.site-footer {
  position: relative;
  z-index: 10;
  border-top: 1px solid var(--border);
  background: var(--bg-surface);
  padding: 1rem 2rem;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  font-size: 0.72rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.footer-sep {
  color: var(--border-bright);
}

.footer-inner code {
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

/* ── Copy Toast ─────────────────────────────────────────── */
.copy-toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(0.5rem);
  background: var(--accent);
  color: #040a0d;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.45rem 1rem;
  border-radius: var(--radius);
  letter-spacing: 0.05em;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 1000;
  white-space: nowrap;
}

.copy-toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 1024px) {
  .generator-grid {
    grid-template-columns: 1fr 1fr;
  }

  #card-dob {
    grid-column: span 2;
  }
}

@media (max-width: 680px) {
  .site-header {
    padding: 1rem 1.25rem 0.75rem;
  }

  .main-content {
    padding: 1.5rem 1.25rem 2rem;
  }

  .generator-grid {
    grid-template-columns: 1fr;
  }

  #card-dob {
    grid-column: span 1;
  }

  .generate-all-strip {
    padding: 2rem 1.5rem;
  }

  .gen-all-btn {
    width: 100%;
  }

  .version-tag {
    display: none;
  }

  .header-tagline {
    font-size: 0.72rem;
  }
}

@media (max-width: 400px) {
  .logo-text {
    font-size: 0.95rem;
  }

  .gen-card {
    padding: 1.25rem;
  }
}

/* ── Focus styles (a11y) ────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ── Scrollbar styling (chromium) ───────────────────────── */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg);
}
::-webkit-scrollbar-thumb {
  background: var(--border-bright);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}