/* ─────────────────────────────────────────────────────────────────────────────
   MultiScreen Link — Landing Page
   Design tokens mirrored from desktop/src/renderer/index.css
   ─────────────────────────────────────────────────────────────────────────── */

:root {
  --color-bg-primary:     #0a0a0f;
  --color-bg-secondary:   #0d0f1a;
  --color-bg-tertiary:    #12141f;
  --color-accent-purple:  #6c63ff;
  --color-accent-blue:    #3ecfff;
  --color-accent-green:   #00ff88;
  --color-accent-red:     #ff4466;
  --color-text-primary:   #f0f2ff;
  --color-text-secondary: #8892b0;
  --color-text-muted:     #4a5568;

  --glass-bg:           rgba(255, 255, 255, 0.05);
  --glass-bg-hover:     rgba(255, 255, 255, 0.08);
  --glass-border:       rgba(255, 255, 255, 0.08);
  --glass-border-hover: rgba(255, 255, 255, 0.15);
  --glass-blur:         blur(12px);

  --gradient-brand: linear-gradient(135deg, #6c63ff 0%, #3ecfff 100%);

  --shadow-glow-purple: 0 0 20px rgba(108, 99, 255, 0.35);
  --shadow-card:        0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-glass:       0 8px 32px rgba(0, 0, 0, 0.5);

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --transition-fast:   150ms ease;
  --transition-normal: 250ms ease;

  --maxw: 1140px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  background-image:
    radial-gradient(ellipse 900px 700px at 15% -5%,  rgba(108, 99, 255, 0.16) 0%, transparent 65%),
    radial-gradient(ellipse 800px 600px at 92% 12%,  rgba(62, 207, 255, 0.10) 0%, transparent 62%),
    radial-gradient(ellipse 1000px 800px at 50% 62%, rgba(108, 99, 255, 0.05) 0%, transparent 70%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

/* ─── Layout ────────────────────────────────────────────────────────────────── */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 24px; }
section { padding-block: 96px; position: relative; }
.section-head { max-width: 620px; margin: 0 auto 56px; text-align: center; }

/* ─── Type ──────────────────────────────────────────────────────────────────── */
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; font-weight: 700; }
h1 { font-size: clamp(2.4rem, 5.6vw, 4rem); }
h2 { font-size: clamp(1.9rem, 3.6vw, 2.7rem); }
h3 { font-size: 1.12rem; letter-spacing: -0.01em; }

.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.lead { color: var(--color-text-secondary); font-size: 1.06rem; }
.eyebrow {
  display: inline-block;
  font-size: 0.72rem; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--color-accent-blue);
  margin-bottom: 14px;
}

/* ─── Buttons ───────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 13px 26px;
  border-radius: var(--radius-md);
  font-size: 0.94rem; font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-normal),
              background var(--transition-normal), border-color var(--transition-normal), opacity var(--transition-fast);
  white-space: nowrap;
}
.btn-primary { background: var(--gradient-brand); color: #fff; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-glow-purple); opacity: 0.94; }
.btn-ghost {
  background: transparent; border-color: var(--glass-border); color: var(--color-text-secondary);
}
.btn-ghost:hover {
  border-color: var(--glass-border-hover); color: var(--color-text-primary); background: var(--glass-bg);
}
.btn-sm { padding: 9px 18px; font-size: 0.86rem; }

/* ─── Glass surfaces ────────────────────────────────────────────────────────── */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px; border-radius: var(--radius-full);
  font-size: 0.68rem; font-weight: 700; letter-spacing: 0.07em; text-transform: uppercase;
}
.badge-purple { background: rgba(108, 99, 255, 0.18); color: #a08fff; border: 1px solid rgba(108, 99, 255, 0.32); }
.badge-green  { background: rgba(0, 255, 136, 0.14);  color: #00ff88; border: 1px solid rgba(0, 255, 136, 0.30); }
.badge-gray   { background: rgba(255,255,255,0.06);   color: var(--color-text-secondary); border: 1px solid var(--glass-border); }

/* ─── Nav ───────────────────────────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 60;
  background: rgba(10, 10, 15, 0.72);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-normal), background var(--transition-normal);
}
.nav.scrolled { border-bottom-color: var(--glass-border); background: rgba(10, 10, 15, 0.88); }
.nav-inner { display: flex; align-items: center; gap: 32px; height: 68px; }

.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.02rem; letter-spacing: -0.02em; }
.logo-mark {
  width: 30px; height: 30px; border-radius: 8px;
  background: var(--gradient-brand);
  display: grid; place-items: center;
  box-shadow: var(--shadow-glow-purple);
  flex-shrink: 0;
}

.nav-links { display: flex; gap: 28px; margin-left: auto; }
.nav-links a {
  font-size: 0.9rem; color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}
.nav-links a:hover { color: var(--color-text-primary); }
.nav-cta { display: flex; gap: 10px; align-items: center; }

/* ─── Hero ──────────────────────────────────────────────────────────────────── */
.hero { padding-block: 88px 72px; text-align: center; }
.hero h1 { margin-bottom: 22px; }
.hero .lead { max-width: 620px; margin: 0 auto 34px; font-size: 1.14rem; }
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero-note { margin-top: 18px; font-size: 0.83rem; color: var(--color-text-muted); }

.pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 15px 6px 8px; margin-bottom: 26px;
  border-radius: var(--radius-full);
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  font-size: 0.8rem; color: var(--color-text-secondary);
}
.pill .dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--color-accent-green);
  box-shadow: 0 0 10px var(--color-accent-green);
  animation: pulse-dot 2s ease-in-out infinite;
  margin-left: 6px;
}

/* ─── Hero device diagram ───────────────────────────────────────────────────── */
.stage { margin-top: 68px; position: relative; }
.stage svg { width: 100%; height: auto; }

/* ─── Stats strip ───────────────────────────────────────────────────────────── */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; overflow: hidden; }
.stat { padding: 26px 22px; text-align: center; }
.stat-value { font-size: 1.7rem; font-weight: 700; letter-spacing: -0.03em; }
.stat-label { font-size: 0.79rem; color: var(--color-text-secondary); margin-top: 4px; }

/* ─── Compare (mirror vs extend) ────────────────────────────────────────────── */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.compare-card { padding: 30px; }
.compare-card.dim { opacity: 0.75; }
.compare-card h3 { margin: 16px 0 10px; }
.compare-card p { color: var(--color-text-secondary); font-size: 0.94rem; }
.compare-icon {
  width: 42px; height: 42px; border-radius: var(--radius-md);
  display: grid; place-items: center;
  background: rgba(255,255,255,0.05); border: 1px solid var(--glass-border);
}
.compare-card.hero-card { border-color: rgba(108, 99, 255, 0.35); background: rgba(108, 99, 255, 0.06); }
.compare-card.hero-card .compare-icon { background: rgba(108, 99, 255, 0.15); border-color: rgba(108, 99, 255, 0.35); }

/* ─── Steps ─────────────────────────────────────────────────────────────────── */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.step { padding: 30px 26px; position: relative; }
.step-num {
  width: 34px; height: 34px; border-radius: 10px;
  display: grid; place-items: center; margin-bottom: 18px;
  font-family: 'JetBrains Mono', monospace; font-size: 0.86rem; font-weight: 600;
  background: rgba(108, 99, 255, 0.14); border: 1px solid rgba(108, 99, 255, 0.3);
  color: #a08fff;
}
.step h3 { margin-bottom: 8px; }
.step p { color: var(--color-text-secondary); font-size: 0.93rem; }

.room-code { display: flex; gap: 7px; margin-top: 20px; }
.room-code span {
  display: grid; place-items: center;
  width: 38px; height: 46px;
  background: rgba(108, 99, 255, 0.08);
  border: 1px solid rgba(108, 99, 255, 0.25);
  border-radius: var(--radius-sm);
  font-family: 'JetBrains Mono', monospace; font-size: 1.15rem; font-weight: 600;
  box-shadow: 0 0 12px rgba(108, 99, 255, 0.14);
}

/* ─── Features ──────────────────────────────────────────────────────────────── */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature { padding: 28px 26px; transition: border-color var(--transition-normal), background var(--transition-normal), transform var(--transition-normal); }
.feature:hover { border-color: var(--glass-border-hover); background: var(--glass-bg-hover); transform: translateY(-3px); }
.feature-icon {
  width: 40px; height: 40px; border-radius: var(--radius-md);
  display: grid; place-items: center; margin-bottom: 16px;
  background: rgba(108, 99, 255, 0.12); border: 1px solid rgba(108, 99, 255, 0.24);
  color: var(--color-accent-blue);
}
.feature h3 { margin-bottom: 8px; }
.feature p { color: var(--color-text-secondary); font-size: 0.92rem; }

/* ─── Pricing ───────────────────────────────────────────────────────────────── */
.pricing { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; max-width: 860px; margin-inline: auto; }
.plan { padding: 34px 30px; display: flex; flex-direction: column; }
.plan.featured {
  border-color: rgba(108, 99, 255, 0.4);
  background: linear-gradient(180deg, rgba(108, 99, 255, 0.09) 0%, rgba(255,255,255,0.04) 100%);
  box-shadow: 0 8px 40px rgba(108, 99, 255, 0.16);
}
.plan-name { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-text-secondary); }
.plan-price { font-size: 2.6rem; font-weight: 700; letter-spacing: -0.03em; margin: 12px 0 4px; }
.plan-price small { font-size: 0.92rem; font-weight: 500; color: var(--color-text-secondary); letter-spacing: 0; }
.plan-desc { color: var(--color-text-secondary); font-size: 0.9rem; margin-bottom: 24px; }
.plan ul { list-style: none; display: grid; gap: 12px; margin-bottom: 28px; }
.plan li { display: flex; gap: 11px; align-items: flex-start; font-size: 0.92rem; }
.plan li svg { flex-shrink: 0; margin-top: 3px; }
.plan li.off { color: var(--color-text-muted); }
.plan .btn { margin-top: auto; width: 100%; }
.plan-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }

/* ─── FAQ ───────────────────────────────────────────────────────────────────── */
.faq { max-width: 760px; margin-inline: auto; display: grid; gap: 12px; }
.faq details {
  border: 1px solid var(--glass-border); border-radius: var(--radius-md);
  background: var(--glass-bg); overflow: hidden;
  transition: border-color var(--transition-normal);
}
.faq details[open] { border-color: rgba(108, 99, 255, 0.3); }
.faq summary {
  padding: 18px 22px; cursor: pointer; font-weight: 600; font-size: 0.96rem;
  list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: '+'; font-size: 1.3rem; font-weight: 400; color: var(--color-text-secondary);
  transition: transform var(--transition-normal); flex-shrink: 0; line-height: 1;
}
.faq details[open] summary::after { transform: rotate(45deg); color: var(--color-accent-purple); }
.faq .answer { padding: 0 22px 20px; color: var(--color-text-secondary); font-size: 0.93rem; }

/* ─── CTA band ──────────────────────────────────────────────────────────────── */
.cta-band { padding: 60px 40px; text-align: center; border-color: rgba(108, 99, 255, 0.28); background: linear-gradient(135deg, rgba(108, 99, 255, 0.14) 0%, rgba(62, 207, 255, 0.07) 100%); }
.cta-band h2 { margin-bottom: 14px; }
.cta-band .lead { max-width: 520px; margin: 0 auto 28px; }

/* ─── Footer ────────────────────────────────────────────────────────────────── */
footer { border-top: 1px solid var(--glass-border); padding-block: 44px; margin-top: 40px; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }
.footer-links { display: flex; gap: 24px; font-size: 0.86rem; color: var(--color-text-secondary); }
.footer-links a:hover { color: var(--color-text-primary); }
.copyright { font-size: 0.84rem; color: var(--color-text-muted); }

/* ─── Animations ────────────────────────────────────────────────────────────── */
@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50%      { transform: scale(1.45); opacity: 0.65; }
}
@keyframes slide-up {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes dash { to { stroke-dashoffset: -28; } }

.reveal { opacity: 0; }
.reveal.in { animation: slide-up 0.55s cubic-bezier(0.22, 0.8, 0.3, 1) forwards; }

.flow-line { stroke-dasharray: 7 7; animation: dash 1.1s linear infinite; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; }
}

/* ─── Responsive ────────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  section { padding-block: 72px; }
  .nav-links { display: none; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .features, .steps { grid-template-columns: 1fr 1fr; }
  .compare { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .features, .steps, .pricing, .stats { grid-template-columns: 1fr; }
  .hero { padding-block: 56px 48px; }
  .hero-actions .btn { width: 100%; }
  .cta-band { padding: 44px 24px; }
  .footer-inner { flex-direction: column; text-align: center; }
}