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

:root {
  --bg: #0a0a0b;
  --bg-surface: #111113;
  --bg-elevated: #18181c;
  --bg-card: #141416;
  --border: rgba(255,255,255,0.07);
  --border-hover: rgba(255,255,255,0.14);
  --accent: #e8ff47;
  --accent-dim: rgba(232,255,71,0.12);
  --accent-hover: #f5ff7a;
  --text-primary: #f0f0ef;
  --text-secondary: #8a8a8a;
  --text-muted: #555;
  --red: #ff4a4a;
  --green: #47ff8e;
  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --font-mono: 'DM Mono', monospace;
  --radius: 6px;
  --radius-lg: 12px;
  --max-w: 1160px;
  --transition: 0.2s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ── Noise overlay ────────────────────────────────────── */
.noise {
  position: fixed; inset: 0; pointer-events: none; z-index: 1000;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* ── Utilities ────────────────────────────────────────── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 2rem; }

a { color: inherit; text-decoration: none; }

/* ── Header ───────────────────────────────────────────── */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  border-bottom: 1px solid var(--border);
  background: rgba(10,10,11,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.header-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 0 2rem;
  height: 60px; display: flex; align-items: center; justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: 8px; }
.logo-mark { color: var(--accent); font-size: 14px; }
.logo-text {
  font-family: var(--font-display);
  font-size: 15px; font-weight: 700;
  letter-spacing: 0.15em; color: var(--text-primary);
}
.logo-accent { color: var(--accent); }
.header-nav { display: flex; gap: 2rem; }
.header-nav a {
  font-size: 13px; color: var(--text-secondary);
  font-family: var(--font-mono); letter-spacing: 0.05em;
  transition: color var(--transition);
}
.header-nav a:hover { color: var(--text-primary); }

/* ── Hero ─────────────────────────────────────────────── */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  position: relative; overflow: hidden; padding-top: 60px;
}
.hero-grid-overlay {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}
.hero::before {
  content: '';
  position: absolute; top: -200px; left: 50%; transform: translateX(-50%);
  width: 800px; height: 600px;
  background: radial-gradient(ellipse at center, rgba(232,255,71,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 1; padding: 4rem 2rem; max-width: var(--max-w); margin: 0 auto; width: 100%; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.1em;
  color: var(--accent); border: 1px solid rgba(232,255,71,0.25);
  padding: 5px 12px; border-radius: 20px; margin-bottom: 2rem;
  text-transform: uppercase;
}
.pulse-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 800; line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}
.hero-accent { color: var(--accent); }
.hero-sub {
  font-size: 1.125rem; color: var(--text-secondary);
  max-width: 560px; line-height: 1.7; margin-bottom: 2.5rem;
}
.hero-cta { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 3rem; }
.btn-primary {
  background: var(--accent); color: #0a0a0b;
  font-family: var(--font-display); font-size: 14px; font-weight: 700;
  letter-spacing: 0.05em; padding: 12px 28px;
  border-radius: var(--radius); transition: all var(--transition);
  text-transform: uppercase;
}
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); }
.btn-ghost {
  border: 1px solid var(--border-hover); color: var(--text-secondary);
  font-family: var(--font-mono); font-size: 13px;
  padding: 12px 24px; border-radius: var(--radius);
  transition: all var(--transition);
}
.btn-ghost:hover { border-color: var(--text-secondary); color: var(--text-primary); }
.hero-stats { display: flex; align-items: center; gap: 2rem; }
.stat { display: flex; flex-direction: column; }
.stat-num { font-family: var(--font-display); font-size: 2rem; font-weight: 700; color: var(--accent); line-height: 1; }
.stat-label { font-size: 12px; color: var(--text-muted); font-family: var(--font-mono); margin-top: 4px; }
.stat-div { width: 1px; height: 40px; background: var(--border); }

/* ── Section shared ───────────────────────────────────── */
.section-label {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.15em;
  color: var(--accent); text-transform: uppercase; margin-bottom: 1rem;
}
.section-title {
  font-family: var(--font-display); font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700; line-height: 1.15; margin-bottom: 3rem;
}

/* ── How it works ─────────────────────────────────────── */
.how-it-works { padding: 8rem 0; border-top: 1px solid var(--border); }
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.step-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 2rem;
  transition: border-color var(--transition);
}
.step-card:hover { border-color: var(--border-hover); }
.step-num {
  font-family: var(--font-display); font-size: 3rem; font-weight: 800;
  color: var(--border-hover); line-height: 1; margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}
.step-card h3 { font-family: var(--font-display); font-size: 1.15rem; font-weight: 600; margin-bottom: 0.75rem; }
.step-card p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.6; }

/* ── Generator section ────────────────────────────────── */
.generator-section { padding: 8rem 0; border-top: 1px solid var(--border); }
.generator-layout { display: flex; flex-direction: column; gap: 2rem; }

/* ── Form ─────────────────────────────────────────────── */
.form-panel {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 2.5rem;
}
.form-group { margin-bottom: 1.5rem; }
.form-group.required label::after { content: ''; }
.req-mark { color: var(--accent); margin-left: 2px; }
.optional { color: var(--text-muted); font-size: 12px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; margin-bottom: 0; }
.form-row .form-group { margin-bottom: 1.5rem; }

label {
  display: block; font-size: 13px; font-weight: 500;
  color: var(--text-secondary); margin-bottom: 8px;
  font-family: var(--font-mono); letter-spacing: 0.05em;
}
input[type="text"], textarea, select {
  width: 100%; background: var(--bg-elevated);
  border: 1px solid var(--border); border-radius: var(--radius);
  color: var(--text-primary); font-family: var(--font-body); font-size: 14px;
  padding: 10px 14px; transition: border-color var(--transition);
  outline: none; -webkit-appearance: none;
}
input[type="text"]:focus, textarea:focus, select:focus { border-color: var(--accent); }
input[type="text"]::placeholder, textarea::placeholder { color: var(--text-muted); }
textarea { resize: vertical; min-height: 80px; line-height: 1.6; }
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23555' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 12px center;
  padding-right: 36px; cursor: pointer;
}
select option { background: #1a1a1e; color: var(--text-primary); }
.char-count { font-size: 11px; color: var(--text-muted); text-align: right; margin-top: 4px; font-family: var(--font-mono); }

.submit-btn {
  width: 100%; padding: 14px 24px; margin-top: 8px;
  background: var(--accent); color: #0a0a0b;
  border: none; border-radius: var(--radius);
  font-family: var(--font-display); font-size: 15px; font-weight: 700;
  letter-spacing: 0.05em; text-transform: uppercase;
  cursor: pointer; transition: all var(--transition);
  display: flex; align-items: center; justify-content: center; gap: 10px;
}
.submit-btn:hover:not(:disabled) { background: var(--accent-hover); transform: translateY(-1px); }
.submit-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.loader-dots { display: inline-flex; gap: 4px; align-items: center; }
.loader-dots span {
  width: 5px; height: 5px; border-radius: 50%; background: #0a0a0b;
  animation: dotbounce 1.2s ease-in-out infinite;
}
.loader-dots span:nth-child(2) { animation-delay: 0.2s; }
.loader-dots span:nth-child(3) { animation-delay: 0.4s; }
@keyframes dotbounce {
  0%, 80%, 100% { transform: scale(0.7); opacity: 0.5; }
  40% { transform: scale(1); opacity: 1; }
}

.form-note { font-size: 11px; color: var(--text-muted); text-align: center; margin-top: 12px; font-family: var(--font-mono); }

/* ── Results ──────────────────────────────────────────── */
.results-panel {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden;
  animation: slideUp 0.4s ease;
}
@keyframes slideUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }

.results-header {
  padding: 1.5rem 2rem 0; border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
}
.results-title-row { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 1.25rem; }
.results-tag { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.15em; color: var(--accent); text-transform: uppercase; margin-bottom: 6px; }
.results-name { font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; }
.results-actions { display: flex; gap: 8px; flex-shrink: 0; }
.action-btn {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.05em;
  padding: 7px 14px; border: 1px solid var(--border-hover);
  border-radius: var(--radius); background: transparent;
  color: var(--text-secondary); cursor: pointer; transition: all var(--transition);
}
.action-btn:hover { border-color: var(--text-secondary); color: var(--text-primary); }

.tab-nav { display: flex; gap: 0; overflow-x: auto; scrollbar-width: none; }
.tab-nav::-webkit-scrollbar { display: none; }
.tab-btn {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.05em;
  padding: 10px 16px; border: none; background: transparent;
  color: var(--text-muted); cursor: pointer; white-space: nowrap;
  border-bottom: 2px solid transparent; transition: all var(--transition);
  text-transform: uppercase;
}
.tab-btn:hover { color: var(--text-secondary); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }

.results-body { padding: 0; }
.tab-pane { display: none; padding: 2rem; }
.tab-pane.active { display: block; }

.pane-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; }
.pane-title { font-family: var(--font-display); font-size: 1.2rem; font-weight: 600; }
.pane-copy {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em;
  padding: 6px 12px; border: 1px solid var(--border-hover);
  border-radius: var(--radius); background: transparent;
  color: var(--text-muted); cursor: pointer; transition: all var(--transition);
  text-transform: uppercase;
}
.pane-copy:hover { border-color: var(--text-secondary); color: var(--text-primary); }

.pane-content {
  font-size: 14px; line-height: 1.85;
  color: var(--text-secondary);
  white-space: pre-wrap; word-break: break-word;
}
.pane-content strong { color: var(--text-primary); font-weight: 500; }

/* ── About ────────────────────────────────────────────── */
.about-section { padding: 8rem 0; border-top: 1px solid var(--border); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: start; }
.about-text p { color: var(--text-secondary); margin-bottom: 1.25rem; line-height: 1.75; }
.about-text .section-title { margin-bottom: 1.5rem; }
.about-features { display: flex; flex-direction: column; gap: 1.5rem; }
.feature-item { display: flex; gap: 1.25rem; align-items: flex-start; }
.feature-icon { color: var(--accent); font-size: 18px; flex-shrink: 0; padding-top: 2px; }
.feature-item h4 { font-family: var(--font-display); font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.feature-item p { color: var(--text-secondary); font-size: 14px; line-height: 1.6; }

/* ── Footer ───────────────────────────────────────────── */
.site-footer { border-top: 1px solid var(--border); padding: 2rem 0; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; }
.footer-note { font-family: var(--font-mono); font-size: 12px; color: var(--text-muted); }
.footer-note a { color: var(--text-secondary); transition: color var(--transition); }
.footer-note a:hover { color: var(--text-primary); }

/* ── Toast ────────────────────────────────────────────── */
.toast {
  position: fixed; bottom: 2rem; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--bg-elevated); border: 1px solid var(--border-hover);
  color: var(--text-primary); font-family: var(--font-mono); font-size: 13px;
  padding: 10px 20px; border-radius: 20px;
  opacity: 0; pointer-events: none; transition: all 0.3s ease; z-index: 999;
  white-space: nowrap;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── Error state ──────────────────────────────────────── */
.error-msg {
  background: rgba(255,74,74,0.08); border: 1px solid rgba(255,74,74,0.2);
  border-radius: var(--radius); padding: 1rem 1.25rem; margin-bottom: 1.5rem;
  font-size: 14px; color: #ff8a8a;
}

/* ── Responsive ───────────────────────────────────────── */
@media (max-width: 900px) {
  .steps-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 3rem; }
  .form-row { grid-template-columns: 1fr; }
  .results-title-row { flex-direction: column; gap: 1rem; }
  .header-nav { display: none; }
  .hero-stats { gap: 1.25rem; }
  .stat-num { font-size: 1.5rem; }
}

@media (max-width: 600px) {
  .form-panel { padding: 1.5rem; }
  .hero-title { font-size: 2.5rem; }
  .results-header { padding: 1.25rem 1.25rem 0; }
  .tab-pane { padding: 1.25rem; }
}