/* ---------- Tokens ---------- */
:root {
  --font-display: 'Fredoka', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;

  --bg-1: #dffaee;
  --bg-2: #e6f3ff;
  --bg-3: #d6ecff;

  --text-primary: #142233;
  --text-secondary: #4b5d6b;
  --text-tertiary: #7c8a93;

  --glass-bg: rgba(255, 255, 255, 0.6);
  --glass-bg-strong: rgba(255, 255, 255, 0.82);
  --glass-border: rgba(20, 40, 55, 0.08);
  --glass-shadow: 0 16px 40px rgba(30, 60, 90, 0.10);
  --glass-shadow-hover: 0 26px 56px rgba(30, 60, 90, 0.16);

  --nav-bg: rgba(255, 255, 255, 0.65);

  --accent-blue: #3b82f6;
  --accent-green: #22c55e;
  --accent-purple: #a855f7;
  --accent-orange: #f59e0b;
  --accent-pink: #ec4899;
  --accent-indigo: #6366f1;
  --accent-yellow: #ca8a04;

  --radius-lg: 26px;
  --radius-md: 18px;
  --radius-sm: 10px;
  --nav-h: 74px;
}

[data-theme="dark"] {
  --bg-1: #0a0e15;
  --bg-2: #0d141f;
  --bg-3: #0b1119;

  --text-primary: #eef3f7;
  --text-secondary: #a9b8c4;
  --text-tertiary: #7c8a96;

  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-bg-strong: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.10);
  --glass-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
  --glass-shadow-hover: 0 26px 56px rgba(0, 0, 0, 0.55);

  --nav-bg: rgba(10, 14, 21, 0.6);

  --accent-yellow: #eab308;
}

/* ---------- Reset ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--text-primary);
  background: linear-gradient(135deg, var(--bg-1) 0%, var(--bg-2) 55%, var(--bg-3) 100%);
  background-attachment: fixed;
  min-height: 100vh;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 600; line-height: 1.15; color: var(--text-primary); }

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--text-primary); color: #fff; padding: 10px 16px; z-index: 200;
}
.skip-link:focus { left: 8px; top: 8px; border-radius: 8px; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 760px; }

/* ---------- Ambient background drift ---------- */
.ambient-bg {
  position: absolute; inset: 0;
  background: radial-gradient(circle at 20% 20%, rgba(140, 235, 190, 0.35), transparent 45%),
              radial-gradient(circle at 80% 30%, rgba(140, 195, 245, 0.35), transparent 45%),
              radial-gradient(circle at 50% 90%, rgba(190, 160, 245, 0.18), transparent 50%);
  background-size: 160% 160%;
  animation: gradientDrift 28s ease-in-out infinite alternate;
  z-index: 0;
  pointer-events: none;
}
[data-theme="dark"] .ambient-bg {
  background: radial-gradient(circle at 20% 20%, rgba(40, 100, 90, 0.25), transparent 45%),
              radial-gradient(circle at 80% 30%, rgba(50, 80, 140, 0.28), transparent 45%),
              radial-gradient(circle at 50% 90%, rgba(90, 60, 140, 0.18), transparent 50%);
}
@keyframes gradientDrift {
  0%   { background-position: 0% 0%; }
  100% { background-position: 100% 100%; }
}

/* ---------- Glass card ---------- */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition: transform 0.35s cubic-bezier(.2,.8,.2,1), box-shadow 0.35s ease;
}
.glass-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--glass-shadow-hover);
}

/* ---------- Pills / tags / buttons ---------- */
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.85rem; font-weight: 600;
  padding: 6px 14px; border-radius: 999px;
}
.pill-soft {
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
}

.tag {
  display: inline-block;
  font-size: 0.72rem; font-weight: 700;
  letter-spacing: 0.02em;
  padding: 4px 10px; border-radius: 999px;
  margin-bottom: 10px;
}
.tag-blue   { background: rgba(59,130,246,0.14); color: var(--accent-blue); }
.tag-green  { background: rgba(34,197,94,0.14);  color: var(--accent-green); }
.tag-purple { background: rgba(168,85,247,0.14); color: var(--accent-purple); }
.tag-orange { background: rgba(245,158,11,0.16); color: var(--accent-orange); }
.tag-pink   { background: rgba(236,72,153,0.14); color: var(--accent-pink); }
.tag-indigo { background: rgba(99,102,241,0.14); color: var(--accent-indigo); }
.tag-yellow { background: rgba(202,138,4,0.14);  color: var(--accent-yellow); }

.dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; flex-shrink: 0; }
.dot-blue   { background: var(--accent-blue); }
.dot-green  { background: var(--accent-green); }
.dot-purple { background: var(--accent-purple); }
.dot-orange { background: var(--accent-orange); }
.dot-pink   { background: var(--accent-pink); }
.dot-indigo { background: var(--accent-indigo); }
.dot-yellow { background: var(--accent-yellow); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font-body); font-weight: 600; font-size: 0.95rem;
  padding: 14px 24px; border-radius: 999px;
  transition: transform 0.25s ease, box-shadow 0.25s ease, opacity 0.25s ease;
  border: none; cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, #34d399, #3b82f6);
  color: #fff;
  box-shadow: 0 14px 30px rgba(59,130,246,0.28);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 36px rgba(59,130,246,0.34); }
.btn-disabled { opacity: 0.92; cursor: default; }
.btn-disabled:hover { transform: none; }
.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
}
.btn-ghost:hover { background: var(--glass-bg); transform: translateY(-2px); }

/* ---------- Nav ---------- */
.nav-wrap {
  position: sticky; top: 0; z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--nav-h);
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark { border-radius: 8px; }
.brand-name {
  font-family: var(--font-display); font-weight: 500; font-size: 1.15rem;
  color: var(--text-primary);
}
.brand-name strong { font-weight: 700; color: var(--accent-blue); }

.nav-menu { display: flex; align-items: center; gap: 28px; }
.nav-menu a {
  font-size: 0.95rem; font-weight: 500; color: var(--text-secondary);
  position: relative; transition: color 0.2s ease;
}
.nav-menu a:hover { color: var(--text-primary); }
.nav-menu a[aria-current="page"] { color: var(--accent-blue); }

.theme-toggle {
  width: 38px; height: 38px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  color: var(--text-primary); cursor: pointer;
  transition: transform 0.3s ease, background 0.2s ease;
}
.theme-toggle:hover { transform: scale(1.06); }
.theme-toggle svg { fill: none; stroke: currentColor; stroke-width: 1.8; }
.theme-toggle .icon-sun circle { fill: currentColor; stroke: none; }
.theme-toggle .icon-moon { display: none; }
.theme-toggle .icon-moon path { fill: currentColor; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

.nav-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 38px; height: 38px; background: none; border: none; cursor: pointer;
}
.nav-toggle span { width: 100%; height: 2px; background: var(--text-primary); border-radius: 2px; transition: transform 0.25s ease, opacity 0.25s ease; }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding: 64px 0 80px; }
.hero-grid {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1fr; gap: 56px; align-items: center;
}
.hero-title {
  font-size: clamp(2.2rem, 5.5vw, 3.4rem);
  margin: 18px 0 20px;
  letter-spacing: -0.01em;
}
.hero-title em { color: var(--accent-green); font-style: normal; }
.hero-sub { font-size: 1.1rem; color: var(--text-secondary); max-width: 540px; margin-bottom: 28px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 16px; }
.hero-microcopy { font-size: 0.85rem; color: var(--text-tertiary); }

/* ---------- Flip card ---------- */
.hero-visual { display: flex; justify-content: center; perspective: 1200px; }
.flip-card { width: 290px; height: 400px; }
.flip-card-inner {
  position: relative; width: 100%; height: 100%;
  transform-style: preserve-3d;
  animation: autoFlip 9s ease-in-out infinite;
}
.flip-face {
  position: absolute; inset: 0;
  backface-visibility: hidden;
  padding: 28px 26px;
  display: flex; flex-direction: column;
  overflow: hidden;
}
.flip-front { display: flex; justify-content: center; }
.flip-back { transform: rotateY(180deg); overflow: hidden; }
@keyframes autoFlip {
  0%, 38%   { transform: rotateY(0deg); }
  50%, 88%  { transform: rotateY(180deg); }
  100%      { transform: rotateY(360deg); }
}
.demo-word { font-family: var(--font-display); font-size: 2rem; font-weight: 600; margin-bottom: 6px; }
.demo-phonetic { color: var(--text-tertiary); margin-bottom: 24px; }
.demo-row { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: var(--text-tertiary); margin-top: auto; }
.demo-line { font-size: 0.86rem; color: var(--text-secondary); margin-bottom: 10px; line-height: 1.4; }
.demo-line-green { color: var(--accent-green); font-weight: 700; font-size: 1.05rem; }
.flip-back .tag { margin-bottom: 6px; }

/* ---------- Sections ---------- */
.section { position: relative; padding: 88px 0; }
.section-head { max-width: 680px; margin: 0 auto 48px; text-align: center; }
.eyebrow {
  display: block; font-size: 0.8rem; font-weight: 700; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--accent-blue); margin-bottom: 12px;
}
.section-head h2 { font-size: clamp(1.6rem, 3.6vw, 2.3rem); margin-bottom: 14px; }
.section-sub { color: var(--text-secondary); font-size: 1.05rem; }

/* ---------- Steps ---------- */
.steps-grid {
  display: grid; grid-template-columns: 1fr; gap: 20px;
  margin-bottom: 36px;
}
.step-card { padding: 32px 28px; }
.step-num {
  width: 38px; height: 38px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-weight: 700;
  background: linear-gradient(135deg, #34d399, #3b82f6); color: #fff;
  margin-bottom: 18px;
}
.step-card h3 { font-size: 1.2rem; margin-bottom: 10px; }
.step-card p { color: var(--text-secondary); }

/* ---------- Journey diagram ---------- */
.journey-panel { padding: 40px 28px; }
.journey-head { text-align: center; margin-bottom: 36px; }
.journey-head h3 { font-size: 1.3rem; margin-bottom: 8px; }
.journey-head p { color: var(--text-secondary); }

.journey-track {
  position: relative;
  display: flex; justify-content: space-between; align-items: flex-start;
  height: 130px;
  padding: 0 10px;
}
.journey-line {
  position: absolute; top: 26px; left: 26px; right: 26px; height: 3px;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-blue));
  opacity: 0.35; border-radius: 3px;
}
.journey-box { position: relative; display: flex; flex-direction: column; align-items: center; gap: 10px; width: 52px; }
.journey-node {
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--glass-bg-strong); border: 1px solid var(--glass-border);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-weight: 600; color: var(--text-secondary);
  z-index: 2;
  animation: boxPulse 13s ease-in-out infinite;
  animation-delay: calc(var(--i) * 2.08s - 0.715s);
}
.journey-label { font-size: 0.78rem; color: var(--text-tertiary); }

@keyframes boxPulse {
  0%, 6%   { box-shadow: 0 0 0 0 rgba(34,197,94,0); color: var(--text-secondary); background: var(--glass-bg-strong); transform: scale(1); }
  8%       { box-shadow: 0 0 0 10px rgba(34,197,94,0.16); background: rgba(34,197,94,0.18); color: var(--accent-green); transform: scale(1.12); }
  16%, 100% { box-shadow: 0 0 0 0 rgba(34,197,94,0); background: var(--glass-bg-strong); color: var(--text-secondary); transform: scale(1); }
}

.journey-token {
  position: absolute; top: 4px; left: 0;
  width: 40px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  color: var(--accent-blue);
  z-index: 3;
  animation: tokenMove 13s cubic-bezier(.45,.05,.55,.95) infinite;
  filter: drop-shadow(0 6px 10px rgba(59,130,246,0.35));
}
@keyframes tokenMove {
  0%, 5%   { left: 6px;    transform: rotate(0deg); color: var(--accent-blue); }
  16%, 21% { left: calc(25% + 6px); transform: rotate(0deg); color: var(--accent-blue); }
  32%, 37% { left: calc(50% + 6px); transform: rotate(0deg); color: var(--accent-blue); }
  48%, 53% { left: calc(75% + 6px); transform: rotate(0deg); color: var(--accent-blue); }
  64%, 76% { left: calc(100% - 34px); transform: rotate(0deg); color: var(--accent-blue); }
  84%      { left: calc(50% + 6px); transform: rotate(-12deg); color: var(--accent-pink); }
  92%, 100% { left: 6px; transform: rotate(0deg); color: var(--accent-blue); }
}

/* ---------- Features ---------- */
.features-grid {
  display: grid; grid-template-columns: 1fr; gap: 20px;
}
.feature-card { padding: 30px 26px; }
.feature-icon {
  width: 46px; height: 46px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.icon-blue   { background: rgba(59,130,246,0.14);  color: var(--accent-blue); }
.icon-green  { background: rgba(34,197,94,0.14);   color: var(--accent-green); }
.icon-purple { background: rgba(168,85,247,0.14);  color: var(--accent-purple); }
.icon-orange { background: rgba(245,158,11,0.16);  color: var(--accent-orange); }
.icon-pink   { background: rgba(236,72,153,0.14);  color: var(--accent-pink); }
.icon-indigo { background: rgba(99,102,241,0.14);  color: var(--accent-indigo); }
.icon-yellow { background: rgba(202,138,4,0.14);   color: var(--accent-yellow); }
.feature-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.feature-card p { color: var(--text-secondary); font-size: 0.96rem; }

/* ---------- Showcase phones ---------- */
.phones-row {
  display: grid; grid-template-columns: 1fr; gap: 28px;
  justify-items: center;
}
.phone {
  width: 100%; max-width: 270px;
  background: var(--glass-bg-strong);
  border: 1px solid var(--glass-border);
  border-radius: 38px;
  padding: 14px;
  box-shadow: var(--glass-shadow);
  transition: transform 0.35s cubic-bezier(.2,.8,.2,1), box-shadow 0.35s ease;
}
.phone:hover { transform: translateY(-6px); box-shadow: var(--glass-shadow-hover); }
.phone-screen {
  background: linear-gradient(160deg, var(--bg-1), var(--bg-3));
  border-radius: 26px;
  padding: 16px 14px 22px;
  min-height: 360px;
}
.phone-statusbar { width: 70px; height: 6px; border-radius: 6px; background: var(--glass-border); margin: 0 auto 16px; }

.mock-list-item {
  display: flex; align-items: center; gap: 10px;
  background: var(--glass-bg-strong); border: 1px solid var(--glass-border);
  border-radius: 14px; padding: 12px 14px; margin-bottom: 10px;
}
.mock-list-title { font-weight: 600; font-size: 0.9rem; }
.mock-list-sub { font-size: 0.74rem; color: var(--text-tertiary); }

.mock-detail { background: var(--glass-bg-strong); border: 1px solid var(--glass-border); border-radius: 18px; padding: 18px; }
.mock-detail-title { font-family: var(--font-display); font-size: 1.3rem; font-weight: 600; margin-bottom: 14px; }
.mock-detail-row { font-size: 0.82rem; color: var(--text-secondary); padding: 10px 12px; border-left: 3px solid; border-radius: 8px; background: rgba(255,255,255,0.4); margin-bottom: 10px; line-height: 1.4; }
.mock-row-green  { border-color: var(--accent-green); }
.mock-row-purple { border-color: var(--accent-purple); }
.mock-row-orange { border-color: var(--accent-orange); }
[data-theme="dark"] .mock-detail-row { background: rgba(255,255,255,0.04); }

.mock-review { background: var(--glass-bg-strong); border: 1px solid var(--glass-border); border-radius: 18px; padding: 26px 18px; text-align: center; min-height: 320px; display: flex; flex-direction: column; justify-content: center; gap: 16px; }
.mock-review-label { font-size: 0.78rem; color: var(--text-tertiary); }
.mock-review-word { font-family: var(--font-display); font-size: 1.6rem; font-weight: 600; margin-bottom: 8px; }
.mock-review-actions { display: flex; gap: 10px; }
.mock-btn { flex: 1; padding: 12px 8px; border-radius: 12px; font-size: 0.82rem; font-weight: 600; }
.mock-btn-no  { background: rgba(239,68,68,0.12); color: #ef4444; }
.mock-btn-yes { background: rgba(34,197,94,0.14); color: var(--accent-green); }

/* ---------- FAQ ---------- */
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  border-radius: var(--radius-md); padding: 6px 22px;
}
.faq-item summary {
  cursor: pointer; list-style: none; font-weight: 600; font-size: 1rem;
  padding: 18px 0; display: flex; justify-content: space-between; align-items: center;
}
.faq-item summary::after {
  content: '+'; font-size: 1.4rem; font-weight: 400; color: var(--text-tertiary);
  transition: transform 0.25s ease; margin-left: 12px;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { color: var(--text-secondary); padding-bottom: 20px; }
.faq-item a { color: var(--accent-blue); text-decoration: underline; }

/* ---------- CTA ---------- */
.cta-card { text-align: center; padding: 56px 32px; }
.cta-card h2 { font-size: clamp(1.5rem, 3.4vw, 2rem); margin-bottom: 10px; }
.cta-card p { color: var(--text-secondary); margin-bottom: 26px; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--glass-border); padding: 40px 0; }
.footer-grid {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px;
}
.footer-links { display: flex; gap: 22px; flex-wrap: wrap; }
.footer-links a { font-size: 0.9rem; color: var(--text-secondary); }
.footer-links a:hover { color: var(--text-primary); }
.footer-copy { font-size: 0.82rem; color: var(--text-tertiary); width: 100%; text-align: center; order: 3; }

/* ---------- Legal page ---------- */
.legal-section { padding-top: 56px; }
.legal-card { padding: 40px 32px; }
.legal-lede { font-size: 1.05rem; font-weight: 500; color: var(--text-primary); margin-bottom: 28px; }
.legal-card h2 { font-size: 1.15rem; margin: 28px 0 10px; }
.legal-card h2:first-of-type { margin-top: 0; }
.legal-card p { color: var(--text-secondary); }
.legal-card a { color: var(--accent-blue); text-decoration: underline; }

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(.2,.8,.2,1), transform 0.7s cubic-bezier(.2,.8,.2,1);
  transition-delay: calc(var(--stagger, 0) * 90ms);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .ambient-bg, .flip-card-inner, .journey-node, .journey-token {
    animation: none !important;
  }
  .flip-card-inner { transform: rotateY(0deg); }
  .reveal { transition: none; opacity: 1; transform: none; }
  .glass-card, .phone, .btn, .theme-toggle { transition: none; }
}

/* ---------- Responsive ---------- */
@media (min-width: 640px) {
  .steps-grid { grid-template-columns: repeat(3, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .phones-row { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 860px) {
  .hero-grid { grid-template-columns: 1.05fr 0.95fr; }
  .hero-copy { text-align: left; }
}
@media (min-width: 980px) {
  .features-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 859px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: var(--nav-bg); backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--glass-border);
    padding: 8px 24px 18px;
    transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: transform 0.25s ease, opacity 0.25s ease;
  }
  .nav-menu.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-menu a { padding: 12px 0; width: 100%; border-bottom: 1px solid var(--glass-border); }
  .theme-toggle { margin-top: 14px; }
  .hero-copy { text-align: center; }
  .hero-actions { justify-content: center; }
  .hero-grid { text-align: center; }
}