/* ── NGW Marketing Site ─────────────────────────────── */
/* Mobile-first, dark theme, zero dependencies.          */

/* ── Tokens ────────────────────────────────────────── */
:root {
  --bg:           #0E0F12;
  --surface:      #17191F;
  --elevated:     #1E2129;
  --text:         #F4F6F8;
  --text-dim:     #A9AFBB;
  --border:       #2A2E38;
  --accent:       #4DA3FF;
  --accent-hover: #3B8EE6;
  --accent-subtle:rgba(77,163,255,0.12);
  --success:      #39D98A;
  --warning:      #F5B041;
  --error:        #FF5D5D;
  --creative:     #9B7CFF;

  --color-key:    #F5B041;
  --color-fill:   #4DA3FF;
  --color-rim:    #9B7CFF;

  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display",
          "Segoe UI", Roboto, sans-serif;
  --mono: "SF Mono", "Fira Code", monospace;

  --radius-sm:  8px;
  --radius-md:  12px;
  --radius-lg:  16px;
  --radius-xl:  20px;

  --max-w: 1120px;
}

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

html {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
}

body { min-height: 100vh; overflow-x: hidden; }

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

img, svg { display: block; max-width: 100%; }

button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* ── Utility ───────────────────────────────────────── */
.container { width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 20px; }

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); border: 0;
}

/* ── Buttons ───────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem; font-weight: 600;
  line-height: 1; white-space: nowrap;
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.15s;
}
.btn:active { transform: scale(0.97); }

.btn--primary {
  background: var(--accent); color: #fff;
}
.btn--primary:hover { background: var(--accent-hover); color: #fff; }

.btn--ghost {
  background: transparent; color: var(--text);
  border: 1px solid var(--border);
}
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); }

.btn--large { padding: 14px 32px; font-size: 1rem; }

/* ── Nav ───────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(14,15,18,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
}

.nav__brand {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.125rem; font-weight: 700; color: var(--text);
}
.nav__brand:hover { color: var(--text); }
.nav__brand svg { width: 32px; height: 32px; flex-shrink: 0; }

.nav__links {
  display: none;
  list-style: none; gap: 28px;
  align-items: center;
}
.nav__links a {
  font-size: 0.875rem; font-weight: 500; color: var(--text-dim);
  transition: color 0.15s;
}
.nav__links a:hover, .nav__links a.active { color: var(--text); }

.nav__cta {
  display: none; gap: 10px; align-items: center;
}

.nav__hamburger {
  display: flex; flex-direction: column; gap: 5px;
  padding: 8px; cursor: pointer;
}
.nav__hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--text-dim); border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}

/* Mobile menu */
.nav__mobile {
  display: none;
  flex-direction: column; gap: 4px;
  padding: 16px 20px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.nav__mobile.open { display: flex; }
.nav__mobile a {
  display: block; padding: 10px 0;
  font-size: 1rem; color: var(--text-dim);
}
.nav__mobile a:hover { color: var(--text); }
.nav__mobile .btn { margin-top: 8px; text-align: center; }

@media (min-width: 768px) {
  .nav__links { display: flex; }
  .nav__cta   { display: flex; }
  .nav__hamburger { display: none; }
  .nav__mobile { display: none !important; }
}

/* ── Hero ──────────────────────────────────────────── */
.hero {
  position: relative;
  padding: 80px 0 60px;
  text-align: center;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 30%, rgba(77,163,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero__badge {
  display: inline-block;
  padding: 6px 14px;
  margin-bottom: 20px;
  border-radius: 999px;
  background: var(--accent-subtle);
  color: var(--accent);
  font-size: 0.75rem; font-weight: 600;
  letter-spacing: 0.04em; text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(1.75rem, 1.4rem + 1.6vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  max-width: 720px;
  margin: 0 auto 16px;
}

.hero__sub {
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.1875rem);
  color: var(--text-dim);
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.6;
}

.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }

/* ── Section ───────────────────────────────────────── */
.section {
  padding: 64px 0;
}
.section--alt { background: var(--surface); }
.section--center { text-align: center; }

.section__label {
  display: inline-block;
  font-size: 0.75rem; font-weight: 600;
  letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.section__title {
  font-size: clamp(1.375rem, 1.2rem + 0.8vw, 2rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 12px;
}

.section__desc {
  font-size: clamp(0.9375rem, 0.9rem + 0.15vw, 1.0625rem);
  color: var(--text-dim);
  max-width: 600px;
  line-height: 1.6;
}
.section--center .section__desc { margin: 0 auto; }

/* ── Demo (3-column) ──────────────────────────────── */
.demo-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 40px;
}
@media (min-width: 768px) {
  .demo-grid { grid-template-columns: repeat(3, 1fr); }
}

.demo-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
}
.demo-card__visual {
  width: 100%; aspect-ratio: 4/3;
  background: var(--elevated);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.demo-card__visual svg { width: 80%; height: 80%; }
.demo-card h3 {
  font-size: 0.9375rem; font-weight: 600; margin-bottom: 6px;
}
.demo-card p {
  font-size: 0.8125rem; color: var(--text-dim); line-height: 1.5;
}

/* Demo steps */
.demo-steps {
  display: flex; align-items: center; justify-content: center;
  gap: 12px; margin-top: 32px;
  flex-wrap: wrap;
}
.demo-step {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.875rem; font-weight: 500; color: var(--text-dim);
}
.demo-step__num {
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: var(--accent-subtle); color: var(--accent);
  font-size: 0.75rem; font-weight: 700;
}
.demo-step__arrow { color: var(--border); font-size: 1.25rem; }

/* ── Breakdown Card ────────────────────────────────── */
.breakdown {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  max-width: 480px;
  margin: 32px auto 0;
}
.breakdown__header {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 16px;
}
.breakdown__pattern {
  font-size: 1.125rem; font-weight: 700;
}
.breakdown__confidence {
  margin-left: auto;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.75rem; font-weight: 600;
  background: rgba(57,217,138,0.12); color: var(--success);
}
.breakdown__metrics {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.breakdown__metric {
  padding: 10px 12px;
  background: var(--elevated);
  border-radius: var(--radius-sm);
}
.breakdown__metric-label {
  font-size: 0.6875rem; font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase; letter-spacing: 0.04em;
  margin-bottom: 4px;
}
.breakdown__metric-value {
  font-size: 0.9375rem; font-weight: 600;
}

/* ── Feature Grid ──────────────────────────────────── */
.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 32px;
}
@media (min-width: 768px) {
  .feature-grid { grid-template-columns: repeat(3, 1fr); }
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
}
.feature-card__icon {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--accent-subtle);
  color: var(--accent);
  font-size: 1.25rem;
  margin-bottom: 16px;
}
.feature-card h3 {
  font-size: 1rem; font-weight: 600; margin-bottom: 8px;
}
.feature-card p {
  font-size: 0.875rem; color: var(--text-dim); line-height: 1.6;
}

/* ── Split Section ─────────────────────────────────── */
.split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}
@media (min-width: 768px) {
  .split { grid-template-columns: 1fr 1fr; }
  .split--reverse .split__text { order: 2; }
  .split--reverse .split__visual { order: 1; }
}

.split__text h2 {
  font-size: clamp(1.25rem, 1.1rem + 0.65vw, 1.75rem);
  font-weight: 700; margin-bottom: 12px;
}
.split__text p {
  font-size: 0.9375rem; color: var(--text-dim); line-height: 1.6;
  margin-bottom: 20px;
}

.split__visual {
  width: 100%; aspect-ratio: 4/3;
  background: var(--elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-dim); font-size: 0.875rem;
}

/* ── Library Grid ──────────────────────────────────── */
.library-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 32px;
}
@media (min-width: 768px) {
  .library-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 1024px) {
  .library-grid { grid-template-columns: repeat(6, 1fr); }
}

.library-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s, transform 0.2s;
}
.library-card:hover { border-color: var(--accent); transform: translateY(-2px); }

.library-card__thumb {
  width: 100%; aspect-ratio: 1;
  background: var(--elevated);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-dim); font-size: 2rem;
}
.library-card__label {
  padding: 10px 12px;
  font-size: 0.8125rem; font-weight: 600;
  text-align: center;
}

/* ── Pricing ───────────────────────────────────────── */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 32px;
}
@media (min-width: 768px) {
  .pricing-grid { grid-template-columns: repeat(3, 1fr); }
}

.pricing-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  display: flex; flex-direction: column;
}
.pricing-card--featured {
  border-color: var(--accent);
  position: relative;
}
.pricing-card--featured::before {
  content: "Most Popular";
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  padding: 4px 14px;
  border-radius: 999px;
  background: var(--accent); color: #fff;
  font-size: 0.6875rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.04em;
}

.pricing-card__name {
  font-size: 1rem; font-weight: 600; margin-bottom: 8px;
}
.pricing-card__price {
  font-size: 2rem; font-weight: 800; margin-bottom: 4px;
}
.pricing-card__price span { font-size: 0.875rem; font-weight: 400; color: var(--text-dim); }
.pricing-card__desc {
  font-size: 0.8125rem; color: var(--text-dim);
  margin-bottom: 20px; line-height: 1.5;
}

.pricing-card__features {
  list-style: none; flex: 1;
  margin-bottom: 24px;
}
.pricing-card__features li {
  padding: 6px 0;
  font-size: 0.8125rem; color: var(--text-dim);
  display: flex; align-items: center; gap: 8px;
}
.pricing-card__features li::before {
  content: "\2713";
  color: var(--success); font-weight: 700;
  flex-shrink: 0;
}

.pricing-card .btn { width: 100%; }

/* ── Comparison Table ──────────────────────────────── */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 40px;
  font-size: 0.8125rem;
}
.comparison-table th,
.comparison-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}
.comparison-table th {
  font-weight: 600; color: var(--text);
  background: var(--surface);
}
.comparison-table td { color: var(--text-dim); }
.comparison-table td:not(:first-child) { text-align: center; }
.comparison-table th:not(:first-child) { text-align: center; }
.comparison-table .check { color: var(--success); }
.comparison-table .dash  { color: var(--border); }

/* ── CTA Banner ────────────────────────────────────── */
.cta-banner {
  text-align: center;
  padding: 64px 20px;
}
.cta-banner h2 {
  font-size: clamp(1.375rem, 1.2rem + 0.8vw, 2rem);
  font-weight: 700; margin-bottom: 12px;
}
.cta-banner p {
  font-size: 1rem; color: var(--text-dim); margin-bottom: 24px;
}

/* ── Footer ────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding: 48px 0 32px;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}
@media (min-width: 768px) {
  .footer__grid { grid-template-columns: 2fr repeat(3, 1fr); }
}

.footer__brand { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.footer__brand-desc { font-size: 0.8125rem; color: var(--text-dim); line-height: 1.5; max-width: 280px; }

.footer__col h4 {
  font-size: 0.75rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--text-dim); margin-bottom: 12px;
}
.footer__col ul { list-style: none; }
.footer__col li { margin-bottom: 8px; }
.footer__col a { font-size: 0.8125rem; color: var(--text-dim); }
.footer__col a:hover { color: var(--text); }

.footer__bottom {
  margin-top: 40px; padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 0.75rem; color: var(--text-dim);
  text-align: center;
}

/* ── Auth Forms ────────────────────────────────────── */
.auth {
  min-height: calc(100vh - 60px);
  display: flex; align-items: center; justify-content: center;
  padding: 40px 20px;
}
.auth__card {
  width: 100%; max-width: 400px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
}
.auth__card h1 {
  font-size: 1.375rem; font-weight: 700;
  text-align: center; margin-bottom: 8px;
}
.auth__card p {
  text-align: center; font-size: 0.875rem;
  color: var(--text-dim); margin-bottom: 24px;
}

.auth__field { margin-bottom: 16px; }
.auth__field label {
  display: block; font-size: 0.8125rem; font-weight: 500;
  margin-bottom: 6px; color: var(--text-dim);
}
.auth__field input {
  width: 100%; padding: 10px 14px;
  background: var(--elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text); font-size: 0.9375rem;
  font-family: var(--font);
  transition: border-color 0.15s;
}
.auth__field input:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-subtle);
}

.auth__card .btn { width: 100%; margin-top: 8px; }
.auth__footer {
  text-align: center; margin-top: 16px;
  font-size: 0.8125rem; color: var(--text-dim);
}
.auth__footer a { color: var(--accent); }

/* ── Blog Cards ────────────────────────────────────── */
.blog-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 32px;
}
@media (min-width: 768px) {
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .blog-grid { grid-template-columns: repeat(3, 1fr); }
}

.blog-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s, transform 0.2s;
}
.blog-card:hover { border-color: var(--accent); transform: translateY(-2px); }

.blog-card__thumb {
  width: 100%; aspect-ratio: 16/9;
  background: var(--elevated);
}
.blog-card__body { padding: 20px; }
.blog-card__date {
  font-size: 0.6875rem; font-weight: 500;
  color: var(--text-dim); text-transform: uppercase;
  letter-spacing: 0.04em; margin-bottom: 8px;
}
.blog-card h3 {
  font-size: 1rem; font-weight: 600;
  margin-bottom: 8px; line-height: 1.35;
}
.blog-card p {
  font-size: 0.8125rem; color: var(--text-dim);
  line-height: 1.6; margin-bottom: 12px;
}
.blog-card__link {
  font-size: 0.8125rem; font-weight: 600; color: var(--accent);
}

/* ── Features Page Detail Sections ─────────────────── */
.feature-detail {
  padding: 48px 0;
  border-bottom: 1px solid var(--border);
}
.feature-detail:last-of-type { border-bottom: none; }

.feature-detail__icon {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--accent-subtle);
  color: var(--accent); font-size: 1.5rem;
  margin-bottom: 16px;
}

.feature-detail h2 {
  font-size: clamp(1.125rem, 1rem + 0.5vw, 1.5rem);
  font-weight: 700; margin-bottom: 12px;
}
.feature-detail p {
  font-size: 0.9375rem; color: var(--text-dim);
  line-height: 1.6; max-width: 640px;
}

/* ── FAQ ───────────────────────────────────────────── */
.faq { margin-top: 48px; }
.faq h2 {
  font-size: 1.375rem; font-weight: 700;
  text-align: center; margin-bottom: 24px;
}
.faq__item {
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}
.faq__q {
  font-size: 0.9375rem; font-weight: 600;
  margin-bottom: 8px;
}
.faq__a {
  font-size: 0.875rem; color: var(--text-dim);
  line-height: 1.6;
}

/* ── Page Hero (inner pages) ───────────────────────── */
.page-hero {
  padding: 60px 0 40px;
  text-align: center;
}
.page-hero h1 {
  font-size: clamp(1.5rem, 1.3rem + 1vw, 2.25rem);
  font-weight: 800; margin-bottom: 12px;
}
.page-hero p {
  font-size: 1rem; color: var(--text-dim);
  max-width: 560px; margin: 0 auto;
  line-height: 1.6;
}

/* ── Library Detail Grid ───────────────────────────── */
.pattern-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 32px;
}
@media (min-width: 768px) {
  .pattern-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .pattern-grid { grid-template-columns: repeat(3, 1fr); }
}

.pattern-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: border-color 0.2s;
}
.pattern-card:hover { border-color: var(--accent); }

.pattern-card__icon {
  font-size: 2rem; margin-bottom: 12px;
}
.pattern-card h3 {
  font-size: 1rem; font-weight: 600; margin-bottom: 8px;
}
.pattern-card p {
  font-size: 0.8125rem; color: var(--text-dim); line-height: 1.6;
}
.pattern-card__setup {
  margin-top: 12px; padding-top: 12px;
  border-top: 1px solid var(--border);
  font-size: 0.75rem; color: var(--text-dim);
  font-family: var(--mono);
}

/* ── Responsive Fine-tune ──────────────────────────── */
@media (min-width: 1024px) {
  .hero { padding: 100px 0 80px; }
  .section { padding: 80px 0; }
}