/* ============================================================
   KAND TECH TEMPLATES — Premium Digital Products
   Design system: Minimal luxury · Deep blue · Editorial
   ============================================================ */

:root {
  /* Core palette */
  --blue: #0B3D91;
  --blue-deep: #072A66;
  --blue-soft: #1A56C4;
  --blue-glow: rgba(11, 61, 145, 0.35);
  --charcoal: #18181B;
  --charcoal-2: #1F1F23;
  --charcoal-3: #27272A;
  --ivory: #F8F6F2;
  --ivory-dim: #E8E4DC;
  --red: #C41E3A;
  --red-soft: #E63950;
  --taupe: #D8CFC4;
  --taupe-dim: #B8AFA4;
  --white: #FFFFFF;
  --muted: #A1A1AA;
  --line: rgba(248, 246, 242, 0.08);
  --line-strong: rgba(248, 246, 242, 0.14);

  /* Typography */
  --font-sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-display: "Inter", system-ui, sans-serif;

  /* Layout */
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --header-h: 72px;
  --max: 1180px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--charcoal);
  color: var(--ivory);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.2s var(--ease); }
ul { list-style: none; }
button { font-family: inherit; border: none; background: none; cursor: pointer; color: inherit; }

/* ---------- Utilities ---------- */
.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 96px 0; }
.section-sm { padding: 64px 0; }

.center { text-align: center; }
.muted { color: var(--muted); }
.blue { color: var(--blue-soft); }
.red { color: var(--red); }
.taupe { color: var(--taupe); }

.eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--blue-soft);
  margin-bottom: 16px;
}

.h-xl {
  font-size: clamp(2.6rem, 5.5vw, 4.2rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.h-lg {
  font-size: clamp(1.9rem, 3.5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
}

.h-md {
  font-size: clamp(1.35rem, 2.2vw, 1.75rem);
  font-weight: 650;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.lead {
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  color: var(--muted);
  max-width: 540px;
  line-height: 1.65;
}

.lead.center { margin-left: auto; margin-right: auto; }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(24, 24, 27, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
  transition: background 0.3s;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-mark {
  width: 28px;
  height: 28px;
  background: var(--blue);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.02em;
}

.logo span { color: var(--blue-soft); font-weight: 500; }

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav a {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--muted);
  transition: color 0.2s, background 0.2s;
}

.site-nav a:hover,
.site-nav a.active { color: var(--ivory); }

.site-nav a.nav-cta {
  background: var(--blue);
  color: var(--white);
  margin-left: 8px;
  padding: 10px 20px;
}

.site-nav a.nav-cta:hover {
  background: var(--blue-soft);
  color: var(--white);
}

.nav-toggle {
  display: none;
  font-size: 22px;
  padding: 8px;
  color: var(--ivory);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s, color 0.25s, border-color 0.25s;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--blue);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--blue-soft);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px var(--blue-glow);
}

.btn-red {
  background: var(--red);
  color: var(--white);
}

.btn-red:hover {
  background: var(--red-soft);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(196, 30, 58, 0.35);
}

.btn-ghost {
  border-color: var(--line-strong);
  color: var(--ivory);
}

.btn-ghost:hover {
  border-color: var(--blue-soft);
  color: var(--blue-soft);
}

.btn-outline {
  border-color: var(--blue);
  color: var(--blue-soft);
}

.btn-outline:hover {
  background: var(--blue);
  color: var(--white);
}

.btn-sm { padding: 10px 20px; font-size: 12px; }
.btn-lg { padding: 16px 36px; font-size: 14px; }

/* ---------- Hero ---------- */
.hero {
  min-height: 92svh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: calc(var(--header-h) + 40px);
  padding-bottom: 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-bg .orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(110px);
  opacity: 0.5;
}

.orb-1 {
  width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(11, 61, 145, 0.45), transparent 70%);
  top: -160px; right: -80px;
}

.orb-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(196, 30, 58, 0.18), transparent 70%);
  bottom: -100px; left: -60px;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(248, 246, 242, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(248, 246, 242, 0.025) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 75% 65% at 50% 40%, black, transparent 75%);
}

.hero-inner { position: relative; z-index: 2; width: 100%; }

.hero .lead { margin-top: 22px; max-width: 520px; }

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 40px;
  flex-wrap: wrap;
}

/* ---------- Product cards ---------- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.product-card {
  background: var(--charcoal-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.3s var(--ease), border-color 0.3s, box-shadow 0.3s;
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-5px);
  border-color: rgba(11, 61, 145, 0.45);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
}

.product-visual {
  aspect-ratio: 4 / 3;
  background: linear-gradient(155deg, #1a1f2e, #12141c);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.product-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(24,24,27,0.5), transparent 40%);
  pointer-events: none;
}

.product-mock {
  width: 72%;
  height: 68%;
  background: var(--charcoal-3);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  padding: 12px;
  gap: 6px;
  box-shadow: 0 12px 32px rgba(0,0,0,0.35);
  position: relative;
  z-index: 1;
}

.product-mock .bar {
  height: 6px;
  border-radius: 3px;
  background: var(--line-strong);
}

.product-mock .bar.short { width: 40%; }
.product-mock .bar.mid { width: 65%; }
.product-mock .bar.accent { background: var(--blue); width: 55%; }
.product-mock .bar.red { background: var(--red); width: 30%; }

.product-mock.canva .bar.accent { background: #00C4CC; }
.product-mock.notion .bar.accent { background: #FFFFFF; }
.product-mock.business .bar.accent { background: var(--blue); }
.product-mock.career .bar.accent { background: var(--taupe); }
.product-mock.bundle .bar.accent { background: var(--red); }

.product-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 700;
  background: var(--blue);
  color: var(--white);
  padding: 5px 10px;
  border-radius: 4px;
  z-index: 2;
}

.product-badge.bundle { background: var(--red); }
.product-badge.demo { background: var(--charcoal-3); border: 1px solid var(--line-strong); color: var(--taupe); }

.product-body {
  padding: 20px 22px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 10px;
}

.product-cat {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue-soft);
  font-weight: 600;
}

.product-title {
  font-size: 1.05rem;
  font-weight: 650;
  letter-spacing: -0.015em;
  line-height: 1.3;
}

.product-desc {
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.5;
  flex: 1;
}

.product-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 8px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.product-price {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.product-price span {
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
  margin-left: 2px;
}

/* ---------- Category chips ---------- */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.cat-card {
  background: var(--charcoal-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: border-color 0.25s, transform 0.25s var(--ease);
}

.cat-card:hover {
  border-color: rgba(11, 61, 145, 0.5);
  transform: translateY(-3px);
}

.cat-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  border-radius: 12px;
  background: rgba(11, 61, 145, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--blue-soft);
}

.cat-card h3 {
  font-size: 15px;
  font-weight: 650;
  margin-bottom: 6px;
}

.cat-card p {
  font-size: 13px;
  color: var(--muted);
}

/* ---------- Benefits / How it works ---------- */
.benefit-card, .step-card {
  background: var(--charcoal-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 28px;
}

.step-num {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--blue-soft);
  margin-bottom: 14px;
}

.benefit-card h3, .step-card h3 {
  font-size: 1.1rem;
  font-weight: 650;
  margin-bottom: 10px;
}

.benefit-card p, .step-card p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.55;
}

/* ---------- FAQ ---------- */
.faq-list { max-width: 720px; margin: 0 auto; }

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-q {
  width: 100%;
  text-align: left;
  padding: 22px 0;
  font-size: 16px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  color: var(--ivory);
}

.faq-q::after {
  content: "+";
  font-size: 20px;
  color: var(--blue-soft);
  transition: transform 0.25s;
}

.faq-item.open .faq-q::after { transform: rotate(45deg); }

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s var(--ease), padding 0.25s;
  font-size: 14.5px;
  color: var(--muted);
  line-height: 1.6;
}

.faq-item.open .faq-a {
  max-height: 240px;
  padding-bottom: 22px;
}

/* ---------- Newsletter ---------- */
.newsletter {
  background: linear-gradient(135deg, var(--blue-deep), var(--charcoal-2));
  border: 1px solid rgba(11, 61, 145, 0.4);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  text-align: center;
}

.newsletter form {
  display: flex;
  gap: 12px;
  max-width: 440px;
  margin: 28px auto 0;
  flex-wrap: wrap;
  justify-content: center;
}

.newsletter input[type="email"] {
  flex: 1;
  min-width: 220px;
  padding: 14px 18px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(0,0,0,0.25);
  color: var(--ivory);
  font-size: 14px;
  outline: none;
}

.newsletter input:focus {
  border-color: var(--blue-soft);
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 64px 0 32px;
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--muted);
  margin-top: 14px;
  max-width: 260px;
  line-height: 1.55;
}

.footer-col h4 {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--taupe);
  margin-bottom: 18px;
  font-weight: 600;
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 10px;
}

.footer-col a:hover { color: var(--ivory); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 28px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom a { color: var(--muted); }
.footer-bottom a:hover { color: var(--ivory); }

/* ---------- Page hero (inner pages) ---------- */
.page-hero {
  padding: calc(var(--header-h) + 56px) 0 48px;
  border-bottom: 1px solid var(--line);
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.page-hero p {
  color: var(--muted);
  max-width: 520px;
  font-size: 1.05rem;
}

/* ---------- Shop filters ---------- */
.shop-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 36px;
}

.filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-btn {
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  border: 1px solid var(--line-strong);
  color: var(--muted);
  transition: all 0.2s;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--white);
}

.sort-select {
  padding: 9px 14px;
  border-radius: 8px;
  border: 1px solid var(--line-strong);
  background: var(--charcoal-2);
  color: var(--ivory);
  font-size: 13px;
  outline: none;
}

/* ---------- Product detail ---------- */
.product-detail {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 56px;
  align-items: start;
  padding: 48px 0 80px;
}

.detail-visual {
  background: var(--charcoal-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.detail-info .product-cat { margin-bottom: 8px; }

.detail-info h1 {
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 12px;
}

.detail-price {
  font-size: 1.6rem;
  font-weight: 700;
  margin: 18px 0;
}

.detail-desc {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65;
  margin-bottom: 28px;
}

.detail-list {
  margin-bottom: 28px;
}

.detail-list h4 {
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--taupe);
  margin-bottom: 12px;
}

.detail-list ul li {
  font-size: 14px;
  color: var(--muted);
  padding: 6px 0;
  padding-left: 18px;
  position: relative;
}

.detail-list ul li::before {
  content: "–";
  position: absolute;
  left: 0;
  color: var(--blue-soft);
}

.detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

.stripe-placeholder {
  background: rgba(11, 61, 145, 0.12);
  border: 1px dashed rgba(11, 61, 145, 0.45);
  border-radius: var(--radius);
  padding: 18px 20px;
  font-size: 13px;
  color: var(--muted);
  margin-top: 20px;
  line-height: 1.5;
}

.stripe-placeholder strong { color: var(--blue-soft); }

/* ---------- Forms ---------- */
.form-card {
  background: var(--charcoal-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 40px;
  max-width: 560px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--taupe);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 13px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-strong);
  background: var(--charcoal);
  color: var(--ivory);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--blue-soft);
}

.form-group textarea { min-height: 140px; resize: vertical; }

.form-note {
  font-size: 13px;
  color: var(--muted);
  margin-top: 16px;
}

/* ---------- Legal pages ---------- */
.legal-content {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 0 80px;
}

.legal-content h2 {
  font-size: 1.35rem;
  font-weight: 650;
  margin: 36px 0 14px;
  letter-spacing: -0.015em;
}

.legal-content h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 24px 0 10px;
}

.legal-content p,
.legal-content li {
  font-size: 14.5px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 12px;
}

.legal-content ul {
  margin: 12px 0 20px 20px;
}

.legal-content ul li {
  list-style: disc;
  margin-bottom: 6px;
}

.legal-content a { color: var(--blue-soft); }
.legal-content a:hover { text-decoration: underline; }

.legal-meta {
  font-size: 13px;
  color: var(--taupe);
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 56px;
  align-items: start;
}

.about-text p {
  color: var(--muted);
  margin-bottom: 18px;
  line-height: 1.7;
  font-size: 15.5px;
}

.values-list {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.value-item {
  background: var(--charcoal-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 22px;
}

.value-item h4 {
  font-size: 15px;
  font-weight: 650;
  margin-bottom: 6px;
}

.value-item p {
  font-size: 13.5px;
  color: var(--muted);
  margin: 0;
}

/* ---------- Reveal animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .cat-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .product-detail { grid-template-columns: 1fr; gap: 36px; }
  .about-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    background: var(--charcoal);
    border-bottom: 1px solid var(--line);
    padding: 16px 24px 24px;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s var(--ease), opacity 0.3s;
  }
  .site-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .site-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }
  .site-nav a.nav-cta { margin-left: 0; text-align: center; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
  .cat-grid { grid-template-columns: 1fr 1fr; }
  .section { padding: 64px 0; }
  .newsletter { padding: 40px 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .form-card { padding: 28px 22px; }
}

@media (max-width: 480px) {
  .cat-grid { grid-template-columns: 1fr; }
  .wrap { padding: 0 18px; }
}

@media (max-width: 768px) {
  .section .wrap[style*="grid-template-columns:1fr 1fr"] {
    display: block !important;
  }
  .section .wrap[style*="grid-template-columns:1fr 1fr"] > * {
    margin-bottom: 32px;
  }
}