/* ============================================================
   MarkerShelf — landing page
   Dark, calm, Apple-Photos-inspired. Brand gradient #5871D4 → #28A4F2
   ============================================================ */

:root {
  --bg:          #0B0C10;
  --bg-2:        #0F1015;
  --surface:     #15161E;
  --surface-2:   #1B1D27;
  --border:      rgba(255, 255, 255, 0.08);
  --border-2:    rgba(255, 255, 255, 0.14);

  --text:        #F2F3F7;
  --text-muted:  #9AA0AD;
  --text-dim:    #6B7180;

  --brand-1:     #5871D4;  /* periwinkle (icon top)   */
  --brand-2:     #28A4F2;  /* sky blue   (icon bottom) */
  --accent-blue: #7394CC;
  --accent-green:#73B894;
  --accent-pink: #D9859E;
  --accent-peri: #8087BF;

  --grad:        linear-gradient(135deg, #5871D4 0%, #2E8FE8 55%, #28A4F2 100%);
  --grad-v:      linear-gradient(180deg, #5871D4 0%, #28A4F2 100%);

  --radius:      18px;
  --radius-lg:   28px;
  --radius-sm:   12px;
  --maxw:        1140px;
  --shadow:      0 20px 60px -20px rgba(0, 0, 0, 0.7);
  --shadow-soft: 0 8px 30px -12px rgba(0, 0, 0, 0.55);

  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
          "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: 84px; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  letter-spacing: -0.011em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ---------- layout helpers ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 110px 0; position: relative; }
.section--tight { padding: 80px 0; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--accent-blue);
  padding: 6px 12px; border: 1px solid var(--border-2); border-radius: 999px;
  background: rgba(115, 148, 204, 0.08);
}
.section-head { max-width: 680px; margin-bottom: 56px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
h1, h2, h3 { letter-spacing: -0.03em; line-height: 1.05; font-weight: 700; }
h2 { font-size: clamp(2rem, 4.5vw, 3.1rem); margin: 18px 0 16px; }
h3 { font-size: 1.3rem; letter-spacing: -0.02em; }
.lead { font-size: clamp(1.05rem, 1.6vw, 1.22rem); color: var(--text-muted); }
.text-grad {
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-size: 1rem; font-weight: 600; letter-spacing: -0.01em;
  padding: 14px 26px; border-radius: 999px; cursor: pointer;
  border: 1px solid transparent; transition: transform .18s ease, box-shadow .25s ease, background .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--grad); color: #fff;
  box-shadow: 0 10px 30px -8px rgba(64, 132, 230, 0.55);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 40px -10px rgba(64, 132, 230, 0.7); }
.btn-ghost { background: rgba(255,255,255,0.05); color: var(--text); border-color: var(--border-2); }
.btn-ghost:hover { background: rgba(255,255,255,0.1); transform: translateY(-2px); }
.btn-lg { padding: 16px 32px; font-size: 1.06rem; }
.btn svg { width: 18px; height: 18px; }
.btn-disabled {
  background: rgba(255,255,255,0.06); color: var(--text-dim);
  border-color: var(--border); cursor: not-allowed; pointer-events: none;
}
.btn-disabled svg { opacity: .7; }

/* ---------- nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background .3s ease, border-color .3s ease, backdrop-filter .3s ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(11, 12, 16, 0.72);
  backdrop-filter: saturate(160%) blur(18px);
  -webkit-backdrop-filter: saturate(160%) blur(18px);
  border-bottom-color: var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 11px; font-weight: 700; font-size: 1.08rem; letter-spacing: -0.02em; }
.brand img { width: 30px; height: 30px; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,.4); }
.nav-links { display: flex; align-items: center; gap: 34px; }
.nav-links a.navlink { color: var(--text-muted); font-size: 0.96rem; font-weight: 500; transition: color .2s; }
.nav-links a.navlink:hover { color: var(--text); }
.nav-cta { display: flex; align-items: center; gap: 14px; }
.nav-toggle { display: none; background: none; border: 0; color: var(--text); cursor: pointer; }
.nav-toggle svg { width: 26px; height: 26px; }

/* ---------- hero ---------- */
.hero { position: relative; padding: 150px 0 90px; overflow: hidden; }
.hero-glow {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
}
.hero-glow::before, .hero-glow::after {
  content: ""; position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.5;
}
.hero-glow::before { width: 620px; height: 620px; background: radial-gradient(circle, #5871D4 0%, transparent 65%); top: -200px; left: -120px; }
.hero-glow::after  { width: 560px; height: 560px; background: radial-gradient(circle, #28A4F2 0%, transparent 65%); top: -80px; right: -160px; opacity: 0.4; }
.hero-grid {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 40px; align-items: center;
}
.hero h1 { font-size: clamp(2.6rem, 6.2vw, 4.5rem); }
.hero .lead { margin: 24px 0 34px; max-width: 540px; font-size: clamp(1.1rem, 1.7vw, 1.3rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.hero-note { margin-top: 20px; font-size: 0.9rem; color: var(--text-dim); display: flex; align-items: center; gap: 8px; }
.hero-note b { color: var(--text-muted); font-weight: 600; }
.hero-visual { display: flex; justify-content: center; position: relative; }

/* ---------- phone frame ---------- */
.phone {
  position: relative; width: 290px; aspect-ratio: 1206 / 2622;
  border-radius: 46px; padding: 11px;
  background: linear-gradient(160deg, #2a2c36, #15161c);
  box-shadow: var(--shadow), 0 0 0 1px rgba(255,255,255,0.06) inset;
}
.phone::after {
  content: ""; position: absolute; top: 20px; left: 50%; transform: translateX(-50%);
  width: 92px; height: 26px; background: #000; border-radius: 999px; z-index: 3;
}
.phone img { width: 100%; height: 100%; object-fit: cover; border-radius: 36px; }
.phone--tilt { transform: rotate(2.5deg); }
.phone--lg { width: 320px; }

/* ---------- marquee / platforms ---------- */
.platforms { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: var(--bg-2); }
.platforms .wrap { display: flex; align-items: center; gap: 18px 40px; flex-wrap: wrap; justify-content: center; padding-top: 30px; padding-bottom: 30px; }
.platforms span.lbl { color: var(--text-dim); font-size: 0.85rem; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase; }
.platform-chip { display: inline-flex; align-items: center; gap: 9px; color: var(--text-muted); font-weight: 600; font-size: 1rem; }
.platform-chip .dot { width: 9px; height: 9px; border-radius: 50%; }

/* ---------- feature rows ---------- */
.feature-row { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.feature-row + .feature-row { margin-top: 120px; }
.feature-row.reverse .feature-visual { order: -1; }
.feature-copy .icon-badge { margin-bottom: 22px; }
.icon-badge {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
  background: rgba(115, 148, 204, 0.12); border: 1px solid var(--border-2);
}
.icon-badge svg { width: 26px; height: 26px; }
.feature-copy p { color: var(--text-muted); font-size: 1.08rem; margin-top: 14px; max-width: 480px; }
.feature-list { list-style: none; margin-top: 26px; display: flex; flex-direction: column; gap: 14px; }
.feature-list li { display: flex; gap: 12px; align-items: flex-start; color: var(--text-muted); }
.feature-list li svg { width: 20px; height: 20px; flex-shrink: 0; margin-top: 2px; color: var(--accent-green); }
.feature-visual { display: flex; justify-content: center; }

/* tinted glow behind a phone */
.visual-tint { position: relative; }
.visual-tint::before {
  content: ""; position: absolute; inset: -10% -5%; z-index: 0; border-radius: 50%;
  filter: blur(80px); opacity: 0.35;
  background: radial-gradient(circle, var(--tint, #5871D4) 0%, transparent 70%);
}
.visual-tint .phone { position: relative; z-index: 1; }

/* ---------- cards grid (problem / find anything) ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; transition: transform .2s ease, border-color .2s ease, background .2s ease;
}
.card:hover { transform: translateY(-4px); border-color: var(--border-2); background: var(--surface-2); }
.card .icon-badge { margin-bottom: 18px; }
.card h3 { margin-bottom: 8px; }
.card p { color: var(--text-muted); font-size: 0.98rem; }

/* ---------- use cases strip ---------- */
.usecases { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.usecase {
  display: inline-flex; align-items: center; gap: 10px; padding: 13px 20px;
  border: 1px solid var(--border); border-radius: 999px; background: var(--surface);
  font-weight: 600; color: var(--text); font-size: 0.98rem;
}
.usecase svg { width: 19px; height: 19px; }

/* ---------- pricing ---------- */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; align-items: stretch; }
.plan {
  position: relative; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 32px 28px; display: flex; flex-direction: column;
}
.plan.featured { border-color: transparent; background:
  linear-gradient(var(--surface), var(--surface)) padding-box,
  var(--grad) border-box;
  box-shadow: 0 24px 60px -28px rgba(64,132,230,0.6);
}
.plan-badge {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  background: var(--grad); color: #fff; font-size: 0.74rem; font-weight: 700;
  letter-spacing: 0.05em; text-transform: uppercase; padding: 6px 14px; border-radius: 999px;
}
.plan h3 { font-size: 1.15rem; }
.plan .price { margin: 16px 0 4px; font-size: 2.5rem; font-weight: 700; letter-spacing: -0.04em; }
.plan .price span { font-size: 1rem; font-weight: 500; color: var(--text-dim); letter-spacing: 0; }
.plan .sub { color: var(--text-dim); font-size: 0.9rem; min-height: 20px; }
.plan ul { list-style: none; margin: 24px 0 28px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.plan ul li { display: flex; gap: 11px; align-items: flex-start; color: var(--text-muted); font-size: 0.96rem; }
.plan ul li svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 3px; color: var(--accent-blue); }
.plan ul li.off { color: var(--text-dim); opacity: 0.7; }
.plan ul li.off svg { color: var(--text-dim); }
.plan .btn { width: 100%; }
.price-note { text-align: center; color: var(--text-dim); font-size: 0.88rem; margin-top: 26px; }

/* ---------- faq ---------- */
.faq { max-width: 760px; margin: 0 auto; }
.faq details {
  border-bottom: 1px solid var(--border); padding: 22px 0; cursor: pointer;
}
.faq summary {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  font-weight: 600; font-size: 1.08rem; list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary .chev { transition: transform .25s ease; flex-shrink: 0; color: var(--text-dim); }
.faq details[open] summary .chev { transform: rotate(45deg); }
.faq p { color: var(--text-muted); margin-top: 14px; font-size: 1rem; }

/* ---------- cta band ---------- */
.cta-band { position: relative; overflow: hidden; }
.cta-inner {
  position: relative; z-index: 1; text-align: center;
  border: 1px solid var(--border-2); border-radius: var(--radius-lg);
  padding: 72px 32px; background:
    radial-gradient(120% 140% at 50% 0%, rgba(88,113,212,0.18) 0%, transparent 60%), var(--surface);
}
.cta-inner h2 { margin-bottom: 14px; }
.cta-inner .lead { margin: 0 auto 30px; max-width: 520px; }

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--border); padding: 56px 0 40px; background: var(--bg-2); }
.footer-top { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.footer .brand { margin-bottom: 14px; }
.footer-tag { color: var(--text-dim); font-size: 0.94rem; max-width: 280px; }
.footer-cols { display: flex; gap: 64px; flex-wrap: wrap; }
.footer-col h4 { font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-dim); margin-bottom: 16px; font-weight: 700; }
.footer-col a { display: block; color: var(--text-muted); font-size: 0.96rem; margin-bottom: 11px; transition: color .2s; }
.footer-col a:hover { color: var(--text); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; margin-top: 48px; padding-top: 26px; border-top: 1px solid var(--border); color: var(--text-dim); font-size: 0.88rem; }
.madeby { display: inline-flex; align-items: center; gap: 8px; color: var(--text-dim); font-size: 0.85rem; opacity: 0.75; transition: opacity .2s, color .2s; }
.madeby img { width: 16px; height: 16px; border-radius: 4px; }
.madeby:hover { opacity: 1; color: var(--text-muted); }

/* ---------- scroll reveal (JS-only enhancement; content visible without JS) ---------- */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s cubic-bezier(.2,.6,.2,1), transform .7s cubic-bezier(.2,.6,.2,1); }
.js .reveal.in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 920px) {
  .hero-grid { grid-template-columns: 1fr; gap: 50px; text-align: center; }
  .hero .lead { margin-left: auto; margin-right: auto; }
  .hero-actions, .hero-note { justify-content: center; }
  .feature-row { grid-template-columns: 1fr; gap: 40px; }
  .feature-row.reverse .feature-visual { order: 0; }
  .feature-copy { text-align: center; }
  .feature-copy .icon-badge, .feature-copy p { margin-left: auto; margin-right: auto; }
  .feature-list { max-width: 420px; margin-left: auto; margin-right: auto; text-align: left; }
  .cards { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 440px; margin: 0 auto; }
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-links.open {
    display: flex; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0;
    background: rgba(11,12,16,0.96); backdrop-filter: blur(18px); padding: 24px; gap: 20px;
    border-bottom: 1px solid var(--border);
  }
}
@media (max-width: 520px) {
  .section { padding: 80px 0; }
  .phone { width: 250px; }
  .footer-top { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}