:root {
  --primary: #1a56db;
  --accent: #e8a020;
  --dark: #0f172a;
  --surface: #f8fafc;
  --card: #ffffff;
  --border: #e2e8f0;
  --text: #1e293b;
  --muted: #64748b;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --font-display: 'Playfair Display', serif;
  --font-body: 'DM Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

body {
  font-family: var(--font-body);
  background: var(--surface);
  color: var(--text);
  line-height: 1.6;
}

.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

/* ── HEADER ── */
.site-header {
  background: var(--dark);
  padding: 16px 0;
  position: sticky; top: 0; z-index: 100;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; gap: 10px; color: #fff; font-size: 20px; font-weight: 600; letter-spacing: -0.3px; }
.logo-icon { color: var(--accent); font-size: 22px; }
.header-nav { display: flex; gap: 28px; }
.header-nav a { color: rgba(255,255,255,0.65); text-decoration: none; font-size: 14px; transition: color 0.2s; }
.header-nav a:hover { color: #fff; }

/* ── ADS ── */
.ad-container { background: #f1f5f9; border: 1px dashed #cbd5e1; border-radius: 8px; margin: 16px 0; padding: 8px; text-align: center; min-height: 90px; display: flex; align-items: center; justify-content: center; }
.ad-container ins { width: 100%; }

/* ── HERO ── */
.hero {
  background: linear-gradient(135deg, var(--dark) 0%, #1e3a6e 100%);
  color: #fff;
  padding: 64px 0 52px;
  text-align: center;
}
.hero h1 { font-family: var(--font-display); font-size: clamp(32px, 5vw, 56px); line-height: 1.15; margin-bottom: 16px; }
.hero h1 .accent { color: var(--accent); }
.hero-sub { font-size: 18px; color: rgba(255,255,255,0.72); max-width: 540px; margin: 0 auto 32px; }
.hero-stats { display: flex; gap: 40px; justify-content: center; }
.stat { font-size: 14px; color: rgba(255,255,255,0.6); }
.stat strong { display: block; font-size: 22px; color: var(--accent); font-weight: 700; }

/* ── BUILDER ── */
.builder-section { padding: 40px 0 60px; }
.builder-layout { display: grid; grid-template-columns: 420px 1fr; gap: 32px; align-items: start; }

/* Controls Panel */
.controls-panel {
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
}
.panel-header { background: var(--dark); padding: 20px 24px; }
.panel-header h2 { color: #fff; font-size: 17px; font-weight: 600; }

.control-group { padding: 20px 24px; border-bottom: 1px solid var(--border); }
.control-group:last-child { border-bottom: none; }
.group-label { display: block; font-size: 11px; font-weight: 700; letter-spacing: 1.2px; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; }

/* Template Grid */
.template-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.tpl-thumb { cursor: pointer; border: 2px solid var(--border); border-radius: 8px; padding: 10px 8px; text-align: center; font-size: 12px; color: var(--muted); transition: all 0.2s; }
.tpl-thumb:hover { border-color: var(--primary); color: var(--primary); }
.tpl-thumb.active { border-color: var(--primary); background: #eff6ff; color: var(--primary); font-weight: 600; }
.tpl-preview { height: 40px; border-radius: 4px; margin-bottom: 8px; }
.classic-prev { background: linear-gradient(90deg, #1a56db 4px, #f1f5f9 4px); }
.modern-prev { background: linear-gradient(180deg, #0f172a 50%, #f1f5f9 50%); }
.minimal-prev { border: 1.5px solid #e2e8f0; }
.bold-prev { background: #1a56db; }
.card-prev { background: linear-gradient(135deg, #1a56db, #7c3aed); }
.banner-prev { background: linear-gradient(90deg, #0f172a 60%, #e8a020 60%); }

/* Form */
.form-grid { display: flex; flex-direction: column; gap: 10px; }
input[type=text], input[type=email], input[type=tel], input[type=url], input[type=password], select, textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 13.5px;
  color: var(--text);
  background: var(--surface);
  transition: border-color 0.2s;
  outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--primary); background: #fff; }
.full-width { width: 100%; }

.social-row { display: flex; align-items: center; gap: 10px; }
.social-icon-label {
  width: 32px; height: 32px; border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; flex-shrink: 0; color: #fff;
}
.linkedin { background: #0077b5; }
.twitter { background: #000; }
.instagram { background: linear-gradient(135deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888); }
.facebook { background: #1877f2; }
.youtube { background: #ff0000; }

/* Style controls */
.style-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.style-item label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.range-row { display: flex; align-items: center; gap: 8px; }
.range-row input[type=range] { flex: 1; accent-color: var(--primary); }
.range-val { font-size: 12px; font-weight: 600; color: var(--primary); min-width: 36px; }
.color-row { display: flex; gap: 8px; align-items: center; }
.color-row input[type=color] { width: 38px; height: 38px; border: 1px solid var(--border); border-radius: 6px; cursor: pointer; padding: 2px; }
.color-row input[type=text] { flex: 1; font-family: var(--font-mono); font-size: 12px; }

.icon-style-grid { display: flex; gap: 16px; }
.icon-style-opt { display: flex; align-items: center; gap: 6px; font-size: 13px; cursor: pointer; }
.icon-style-opt input { accent-color: var(--primary); }

.multi-sig-controls select { margin-bottom: 8px; }
.hint-text { font-size: 12px; color: var(--muted); }

/* Preview Panel */
.preview-panel {}
.preview-sticky { position: sticky; top: 76px; }
.preview-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.preview-header h3 { font-size: 17px; font-weight: 600; }
.preview-actions { display: flex; gap: 10px; }

.btn-primary {
  background: var(--primary); color: #fff;
  border: none; border-radius: 8px; padding: 10px 20px;
  font-family: var(--font-body); font-size: 14px; font-weight: 600;
  cursor: pointer; transition: all 0.2s;
}
.btn-primary:hover { background: #1447c0; transform: translateY(-1px); }

.btn-outline {
  background: #fff; color: var(--text);
  border: 1px solid var(--border); border-radius: 8px; padding: 10px 16px;
  font-family: var(--font-body); font-size: 13px; cursor: pointer; transition: all 0.2s;
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }

.preview-window {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  min-height: 200px;
  box-shadow: var(--shadow);
  transition: background 0.3s;
}
.preview-window.dark-bg { background: #1e293b; }

/* Code Output */
.code-output-section {
  margin-top: 24px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.code-header { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; border-bottom: 1px solid var(--border); background: var(--dark); }
.code-header h3 { color: #fff; font-size: 15px; }
.btn-copy, .btn-download {
  background: var(--accent); color: var(--dark);
  border: none; border-radius: 6px; padding: 7px 14px;
  font-family: var(--font-body); font-size: 13px; font-weight: 700;
  cursor: pointer; margin-left: 8px; transition: all 0.2s;
}
.btn-download { background: #fff; color: var(--dark); }
.btn-copy:hover { background: #d4900e; }

.code-tabs { display: flex; border-bottom: 1px solid var(--border); background: #f8fafc; }
.tab-btn { padding: 10px 20px; border: none; background: none; cursor: pointer; font-family: var(--font-body); font-size: 13px; color: var(--muted); border-bottom: 2px solid transparent; transition: all 0.2s; }
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }

.code-area {
  width: 100%; min-height: 220px; padding: 20px;
  font-family: var(--font-mono); font-size: 12px; line-height: 1.7;
  border: none; background: #0f172a; color: #94a3b8;
  resize: vertical; outline: none;
}

.instructions-box { padding: 24px; font-size: 14px; }
.instructions-box h4 { color: var(--primary); font-size: 14px; font-weight: 700; margin: 16px 0 8px; }
.instructions-box h4:first-child { margin-top: 0; }
.instructions-box ol { padding-left: 20px; }
.instructions-box li { margin-bottom: 6px; color: var(--muted); }
.instructions-box code { background: #f1f5f9; padding: 2px 6px; border-radius: 4px; font-family: var(--font-mono); font-size: 12px; }

/* Multi Sigs */
.multi-preview-area { margin-top: 24px; }
.multi-header { margin-bottom: 16px; }
.multi-header h3 { font-size: 17px; font-weight: 600; }
.multi-sig-item { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 20px; overflow: hidden; }
.multi-sig-item .sig-label { background: var(--dark); color: rgba(255,255,255,0.7); font-size: 12px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; padding: 10px 20px; }
.multi-sig-item .sig-preview { padding: 28px; }
.multi-sig-item .sig-code-btn { padding: 12px 20px; border-top: 1px solid var(--border); background: var(--surface); display: flex; gap: 10px; }

/* HOW IT WORKS */
.how-section { padding: 64px 0; background: var(--dark); }
.how-section .section-title { font-family: var(--font-display); font-size: 36px; color: #fff; text-align: center; margin-bottom: 48px; }
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.step-card { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius); padding: 32px 28px; }
.step-num { font-family: var(--font-display); font-size: 48px; color: var(--accent); opacity: 0.4; line-height: 1; margin-bottom: 16px; }
.step-card h3 { color: #fff; font-size: 18px; margin-bottom: 10px; }
.step-card p { color: rgba(255,255,255,0.55); font-size: 14px; }

/* SEO CONTENT */
.seo-content { padding: 64px 0; }
.seo-content h2 { font-family: var(--font-display); font-size: 32px; text-align: center; margin-bottom: 40px; }
.seo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.seo-grid div { border-left: 3px solid var(--primary); padding-left: 20px; }
.seo-grid h3 { font-size: 17px; margin-bottom: 10px; }
.seo-grid p { font-size: 14px; color: var(--muted); }

/* FOOTER */
.site-footer { background: var(--dark); padding: 48px 0 24px; color: rgba(255,255,255,0.6); }
.footer-inner { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 32px; }
.footer-brand .logo-icon { color: var(--accent); }
.footer-brand p { font-size: 13px; margin-top: 6px; }
.footer-links { display: flex; gap: 24px; }
.footer-links a { color: rgba(255,255,255,0.5); text-decoration: none; font-size: 13px; }
.footer-links a:hover { color: #fff; }
.footer-copy { font-size: 12px; text-align: center; color: rgba(255,255,255,0.3); border-top: 1px solid rgba(255,255,255,0.07); padding-top: 20px; }

@media (max-width: 960px) {
  .builder-layout { grid-template-columns: 1fr; }
  .steps-grid, .seo-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 20px; }
  .style-grid { grid-template-columns: 1fr; }
}