/* ===== RESET & VARIABLES ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #08090d;
  --bg2: #0e1017;
  --card: #13141e;
  --card-hover: #1a1c2a;
  --input-bg: #0c0d14;
  --border: #222440;
  --border-hover: #36386a;
  --fg: #eaeaf2;
  --fg2: #8f91ab;
  --muted: #555775;
  --accent: #6c5ce7;
  --accent-l: #a29bfe;
  --accent-glow: rgba(108,92,231,0.25);
  --green: #00d4a4;
  --green-dim: rgba(0,212,164,0.1);
  --green-glow: rgba(0,212,164,0.18);
  --orange: #fd7e46;
  --blue: #4da6ff;
  --red: #ff6b6b;
  --yellow: #ffd93d;
  --r: 12px;
  --r-sm: 8px;
  --r-lg: 16px;
  --r-xl: 20px;
  --max-w: 1200px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', monospace;
}

html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--bg); color: var(--fg); line-height: 1.6; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

/* ===== NAV ===== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(8,9,13,0.82); backdrop-filter: blur(24px) saturate(1.2);
  border-bottom: 1px solid var(--border); height: 64px; padding: 0 40px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  font-weight: 800; font-size: 20px; letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--accent-l), var(--green));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a { color: var(--fg2); font-size: 14px; font-weight: 500; transition: color 0.2s; }
.nav-links a:hover { color: var(--fg); }
.nav-right { display: flex; gap: 12px; align-items: center; }
.nav-search {
  background: var(--card); border: 1px solid var(--border); border-radius: 100px;
  padding: 7px 16px; color: var(--muted); font-size: 13px;
  display: flex; align-items: center; gap: 8px; cursor: pointer; transition: border-color 0.2s;
}
.nav-search:hover { border-color: var(--border-hover); }
.nav-search kbd { background: var(--bg2); border: 1px solid var(--border); border-radius: 4px; padding: 1px 6px; font-size: 11px; font-family: var(--font); }
.btn-nav {
  background: var(--accent); color: #fff; border: none;
  padding: 8px 20px; border-radius: var(--r-sm); font-size: 13px; font-weight: 600;
  cursor: pointer; transition: all 0.2s;
}
.btn-nav:hover { background: #7c6cf7; box-shadow: 0 0 20px var(--accent-glow); }

/* Mobile menu */
.nav-menu-btn { display: none; background: none; border: none; color: var(--fg); font-size: 24px; cursor: pointer; }

/* ===== HERO ===== */
.hero {
  min-height: 100vh; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center; padding: 140px 40px 60px; position: relative;
}
.hero-glow {
  position: absolute; top: -300px; left: 50%; transform: translateX(-50%);
  width: 900px; height: 900px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%); pointer-events: none;
}
.hero-glow-2 {
  position: absolute; top: 200px; right: -200px; width: 600px; height: 600px;
  background: radial-gradient(circle, var(--green-glow) 0%, transparent 70%); pointer-events: none;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--card); border: 1px solid var(--border);
  padding: 6px 16px 6px 12px; border-radius: 100px; font-size: 13px;
  color: var(--accent-l); margin-bottom: 28px;
}
.hero-badge .pulse { width: 8px; height: 8px; background: var(--green); border-radius: 50%; position: relative; }
.hero-badge .pulse::after {
  content: ''; position: absolute; inset: -3px; border-radius: 50%; background: var(--green);
  animation: ping 1.5s cubic-bezier(0,0,0.2,1) infinite; opacity: 0;
}
@keyframes ping { 0% { transform: scale(1); opacity: .6; } 100% { transform: scale(2.5); opacity: 0; } }

.hero h1 { font-size: 72px; font-weight: 900; line-height: 1.02; letter-spacing: -3px; max-width: 820px; margin-bottom: 22px; position: relative; }
.hero h1 .grad { background: linear-gradient(135deg, var(--accent-l) 0%, var(--green) 60%, #00f5c4 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-sub { font-size: 18px; color: var(--fg2); max-width: 540px; margin-bottom: 36px; line-height: 1.7; }
.hero-actions { display: flex; gap: 14px; margin-bottom: 48px; }
.btn-primary {
  background: var(--accent); color: #fff; border: none;
  padding: 15px 36px; border-radius: var(--r-sm); font-size: 15px; font-weight: 600;
  cursor: pointer; transition: all 0.25s; display: flex; align-items: center; gap: 8px;
  font-family: var(--font);
}
.btn-primary:hover { background: #7c6cf7; box-shadow: 0 0 30px var(--accent-glow); transform: translateY(-1px); }
.btn-secondary {
  background: transparent; color: var(--fg); border: 1px solid var(--border);
  padding: 15px 32px; border-radius: var(--r-sm); font-size: 15px; font-weight: 500;
  cursor: pointer; transition: all 0.25s; font-family: var(--font);
}
.btn-secondary:hover { border-color: var(--fg2); background: var(--card); }

/* Stats */
.hero-stats { display: flex; gap: 48px; padding-top: 32px; border-top: 1px solid var(--border); }
.hero-stat { text-align: center; }
.hero-stat .num { font-size: 28px; font-weight: 800; font-family: var(--mono); background: linear-gradient(135deg, var(--accent-l), var(--green)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-stat .label { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 1.5px; margin-top: 4px; }

/* ===== SECTIONS ===== */
.section { padding: 100px 40px; max-width: var(--max-w); margin: 0 auto; }
.section-label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 3px; color: var(--accent-l); margin-bottom: 10px; }
.section-title { font-size: 38px; font-weight: 700; letter-spacing: -1px; margin-bottom: 14px; }
.section-desc { font-size: 16px; color: var(--fg2); max-width: 500px; margin-bottom: 40px; }

/* ===== TOOLS GRID ===== */
.tools-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.tool-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: 24px; cursor: pointer; transition: all 0.3s; position: relative; overflow: hidden;
}
.tool-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--green)); opacity: 0; transition: opacity 0.3s;
}
.tool-card:hover { border-color: var(--border-hover); background: var(--card-hover); transform: translateY(-2px); }
.tool-card:hover::before { opacity: 1; }
.tool-icon {
  width: 42px; height: 42px; border-radius: var(--r-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; margin-bottom: 14px;
}
.tool-icon.purple { background: rgba(108,92,231,0.12); color: var(--accent-l); }
.tool-icon.green { background: var(--green-dim); color: var(--green); }
.tool-icon.orange { background: rgba(253,126,70,0.12); color: var(--orange); }
.tool-icon.blue { background: rgba(77,166,255,0.12); color: var(--blue); }
.tool-icon.red { background: rgba(255,107,107,0.1); color: var(--red); }
.tool-icon.yellow { background: rgba(255,217,61,0.1); color: var(--yellow); }
.tool-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.tool-card p { font-size: 13px; color: var(--fg2); line-height: 1.6; margin-bottom: 10px; }
.tool-tag { display: inline-block; font-size: 11px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; }
.tool-tag.hot { color: var(--orange); }
.tool-tag.new { color: var(--green); }

/* ===== CALCULATOR PAGE ===== */
.calc-page { padding: 100px 40px 60px; max-width: 960px; margin: 0 auto; }
.calc-page h1 { font-size: 36px; font-weight: 700; letter-spacing: -1px; margin-bottom: 12px; }
.calc-page > p { font-size: 16px; color: var(--fg2); line-height: 1.7; margin-bottom: 32px; max-width: 700px; }

.calc-widget {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--r-xl); padding: 32px;
  margin-bottom: 40px;
}
.calc-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.calc-header h2 { font-size: 18px; font-weight: 600; display: flex; align-items: center; gap: 8px; }
.calc-header .dot { width: 6px; height: 6px; background: var(--green); border-radius: 50%; }
.calc-header .live { font-size: 11px; color: var(--green); font-weight: 600; text-transform: uppercase; letter-spacing: 1px; }

.calc-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.calc-field { margin-bottom: 4px; }
.calc-field.full { grid-column: span 2; }
.calc-field label { display: block; font-size: 12px; font-weight: 600; color: var(--fg2); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.5px; }
.calc-field input, .calc-field select {
  width: 100%; background: var(--input-bg); border: 1px solid var(--border);
  color: var(--fg); padding: 11px 14px; border-radius: var(--r-sm);
  font-size: 15px; font-family: var(--mono); transition: border-color 0.2s;
}
.calc-field input:focus, .calc-field select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }

.calc-result {
  background: linear-gradient(135deg, rgba(108,92,231,0.08), rgba(0,212,164,0.06));
  border: 1px solid var(--border); border-radius: var(--r); padding: 24px; margin-top: 24px;
}
.calc-result .rlabel { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; }
.calc-result .rvalue { font-size: 36px; font-weight: 700; font-family: var(--mono); color: var(--green); margin-top: 2px; }
.calc-result .breakdown { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border); }
.calc-result .bk-label { font-size: 10px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; }
.calc-result .bk-val { font-size: 16px; font-weight: 600; font-family: var(--mono); color: var(--fg); margin-top: 2px; }

/* ===== GUIDE/ARTICLE ===== */
.article { padding: 100px 40px 60px; max-width: 780px; margin: 0 auto; }
.article h1 { font-size: 36px; font-weight: 700; letter-spacing: -1px; margin-bottom: 16px; line-height: 1.2; }
.article-meta { display: flex; gap: 16px; font-size: 13px; color: var(--muted); margin-bottom: 32px; padding-bottom: 20px; border-bottom: 1px solid var(--border); }
.article h2 { font-size: 24px; font-weight: 700; margin: 40px 0 16px; letter-spacing: -0.5px; }
.article h3 { font-size: 18px; font-weight: 600; margin: 28px 0 12px; }
.article p { font-size: 16px; color: var(--fg2); line-height: 1.8; margin-bottom: 20px; }
.article ul, .article ol { margin: 0 0 20px 24px; color: var(--fg2); font-size: 16px; line-height: 1.8; }
.article li { margin-bottom: 8px; }
.article strong { color: var(--fg); }
.article blockquote { border-left: 3px solid var(--accent); padding: 12px 20px; margin: 20px 0; background: var(--card); border-radius: 0 var(--r-sm) var(--r-sm) 0; }
.article blockquote p { margin: 0; color: var(--fg2); }
.article table { width: 100%; border-collapse: collapse; margin: 20px 0; }
.article th, .article td { padding: 12px 16px; border: 1px solid var(--border); text-align: left; font-size: 14px; }
.article th { background: var(--card); font-weight: 600; color: var(--fg); }
.article td { color: var(--fg2); }
.article a { color: var(--accent-l); }
.article a:hover { text-decoration: underline; }

/* ===== STATIC PAGES (about/contact/privacy/terms) ===== */
.page { padding: 100px 40px 60px; max-width: 780px; margin: 0 auto; }
.page h1 { font-size: 36px; font-weight: 700; letter-spacing: -1px; margin-bottom: 16px; }
.page h2 { font-size: 22px; font-weight: 600; margin: 32px 0 14px; }
.page p { font-size: 15px; color: var(--fg2); line-height: 1.8; margin-bottom: 16px; }
.page ul { margin: 0 0 16px 24px; color: var(--fg2); }
.page li { margin-bottom: 6px; font-size: 15px; line-height: 1.7; }

/* Contact form */
.contact-form { max-width: 500px; margin-top: 24px; }
.contact-form label { display: block; font-size: 13px; font-weight: 600; color: var(--fg2); margin-bottom: 6px; }
.contact-form input, .contact-form textarea, .contact-form select {
  width: 100%; background: var(--input-bg); border: 1px solid var(--border);
  color: var(--fg); padding: 12px 14px; border-radius: var(--r-sm);
  font-size: 14px; font-family: var(--font); margin-bottom: 16px; transition: border-color 0.2s;
}
.contact-form textarea { min-height: 140px; resize: vertical; }
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }

/* ===== GUIDES GRID ===== */
.guides-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.guide-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--r-lg);
  overflow: hidden; transition: all 0.25s; cursor: pointer;
}
.guide-card:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.guide-thumb { height: 150px; position: relative; }
.guide-thumb.t1 { background: linear-gradient(135deg, #1a1040, #2d1b69); }
.guide-thumb.t2 { background: linear-gradient(135deg, #0a2a20, #0d3d2d); }
.guide-thumb.t3 { background: linear-gradient(135deg, #1a1a3d, #2d2d69); }
.guide-thumb.t4 { background: linear-gradient(135deg, #2a1a0a, #3d2d0d); }
.guide-thumb.t5 { background: linear-gradient(135deg, #0a1a2a, #0d2d3d); }
.guide-thumb.t6 { background: linear-gradient(135deg, #2a0a1a, #3d0d2d); }
.guide-thumb .tag {
  position: absolute; bottom: 10px; left: 10px;
  background: rgba(0,0,0,0.5); backdrop-filter: blur(8px);
  padding: 4px 10px; border-radius: 100px; font-size: 11px; font-weight: 600;
}
.guide-body { padding: 18px; }
.guide-body h3 { font-size: 15px; font-weight: 600; margin-bottom: 6px; line-height: 1.4; }
.guide-body p { font-size: 13px; color: var(--fg2); line-height: 1.5; margin-bottom: 8px; }
.guide-body .read { font-size: 12px; color: var(--accent-l); font-weight: 600; }

/* ===== HOW IT WORKS ===== */
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; text-align: center; position: relative; }
.steps-grid::before { content: ''; position: absolute; top: 36px; left: calc(16.66% + 20px); right: calc(16.66% + 20px); height: 1px; background: var(--border); }
.step-num {
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--card); border: 2px solid var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 700; font-family: var(--mono); color: var(--accent-l);
  margin: 0 auto 18px; position: relative; z-index: 1;
}
.step-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.step-card p { font-size: 14px; color: var(--fg2); line-height: 1.6; max-width: 280px; margin: 0 auto; }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; }
.faq-item { border-bottom: 1px solid var(--border); padding: 20px 0; }
.faq-q { display: flex; justify-content: space-between; align-items: center; cursor: pointer; font-size: 15px; font-weight: 500; }
.faq-q:hover { color: var(--accent-l); }
.faq-q .arrow { transition: transform 0.2s; color: var(--muted); font-size: 12px; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s, padding 0.3s; font-size: 14px; color: var(--fg2); line-height: 1.7; }
.faq-item.open .faq-a { max-height: 200px; padding-top: 12px; }
.faq-item.open .arrow { transform: rotate(180deg); }

/* ===== NEWSLETTER ===== */
.nl-box {
  background: linear-gradient(135deg, rgba(108,92,231,0.1), rgba(0,212,164,0.06));
  border: 1px solid var(--border); border-radius: var(--r-xl); padding: 60px; text-align: center;
}
.nl-box h2 { font-size: 30px; font-weight: 700; margin-bottom: 12px; }
.nl-box p { font-size: 16px; color: var(--fg2); margin-bottom: 28px; max-width: 460px; margin-left: auto; margin-right: auto; }
.nl-form { display: flex; gap: 12px; max-width: 460px; margin: 0 auto; }
.nl-form input { flex: 1; background: var(--input-bg); border: 1px solid var(--border); color: var(--fg); padding: 12px 18px; border-radius: var(--r-sm); font-size: 14px; font-family: var(--font); }
.nl-form input:focus { outline: none; border-color: var(--accent); }
.nl-form button { background: var(--accent); color: #fff; border: none; padding: 12px 28px; border-radius: var(--r-sm); font-size: 14px; font-weight: 600; cursor: pointer; transition: all 0.2s; white-space: nowrap; font-family: var(--font); }
.nl-form button:hover { background: #7c6cf7; }
.nl-note { font-size: 12px; color: var(--muted); margin-top: 14px; }

/* ===== FOOTER ===== */
.footer { border-top: 1px solid var(--border); padding: 60px 40px 40px; max-width: var(--max-w); margin: 0 auto; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .logo { font-weight: 800; font-size: 18px; margin-bottom: 10px; background: linear-gradient(135deg, var(--accent-l), var(--green)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.footer-brand p { font-size: 13px; color: var(--muted); line-height: 1.6; max-width: 260px; }
.footer-col h4 { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px; color: var(--fg2); margin-bottom: 14px; }
.footer-col a { display: block; font-size: 13px; color: var(--muted); padding: 3px 0; transition: color 0.2s; }
.footer-col a:hover { color: var(--fg2); }
.footer-bottom { border-top: 1px solid var(--border); padding-top: 24px; display: flex; justify-content: space-between; }
.footer-bottom span { font-size: 12px; color: var(--muted); }
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a { font-size: 12px; color: var(--muted); }
.footer-bottom-links a:hover { color: var(--fg2); }

/* ===== BREADCRUMB ===== */
.breadcrumb { padding: 80px 40px 0; max-width: var(--max-w); margin: 0 auto; font-size: 13px; color: var(--muted); display: flex; gap: 8px; }
.breadcrumb a { color: var(--muted); transition: color 0.2s; }
.breadcrumb a:hover { color: var(--fg2); }
.breadcrumb .sep { color: var(--border); }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .hero h1 { font-size: 38px; letter-spacing: -1px; }
  .hero-stats { gap: 24px; flex-wrap: wrap; justify-content: center; }
  .tools-grid, .guides-grid, .steps-grid { grid-template-columns: 1fr; }
  .steps-grid::before { display: none; }
  .calc-fields { grid-template-columns: 1fr; }
  .calc-field.full { grid-column: span 1; }
  .calc-section { grid-template-columns: 1fr !important; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-links, .nav-search { display: none; }
  .nav-menu-btn { display: block; }
  .section { padding: 60px 20px; }
  .hero { padding: 120px 20px 40px; }
  .calc-page, .article, .page { padding: 80px 20px 40px; }
}
@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; }
  .nl-form { flex-direction: column; }
  .calc-result .breakdown { grid-template-columns: 1fr; }
}