/* =====================================================
   Loop — marketing site
   Coral infinity brand language. Static, no framework.
   ===================================================== */

:root {
  --coral-50:  #FFF1F2;
  --coral-100: #FFE4E6;
  --coral-300: #FDA4AF;
  --coral-400: #FB7185;
  --coral-500: #F43F5E;
  --coral-600: #E11D48;
  --coral-700: #BE123C;
  --coral-900: #4C0519;

  --ink-50:  #F8FAFC;
  --ink-100: #F1F5F9;
  --ink-200: #E2E8F0;
  --ink-400: #94A3B8;
  --ink-500: #64748B;
  --ink-700: #334155;
  --ink-900: #0F172A;
  --ink-950: #020617;

  --bg: #FFFEFB;
  --fg: var(--ink-900);
  --muted: var(--ink-500);
  --accent: var(--coral-500);
  --surface: #FFFFFF;
  --surface-2: var(--coral-50);
  --border: rgba(15, 23, 42, 0.08);

  --font-sans: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --font-display: Inter, system-ui, sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --radius-sm: 8px;
  --radius:    14px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.06);
  --shadow:    0 8px 24px -8px rgba(15, 23, 42, 0.12);
  --shadow-lg: 0 25px 50px -12px rgba(244, 63, 94, 0.25);

  --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: var(--ink-950);
    --fg: var(--ink-50);
    --muted: var(--ink-400);
    --surface: rgba(15, 23, 42, 0.7);
    --surface-2: rgba(244, 63, 94, 0.08);
    --border: rgba(148, 163, 184, 0.12);
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover {
  color: var(--coral-700);
}

/* ───────── Layout ───────── */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 96px 0;
}

@media (max-width: 768px) {
  section { padding: 64px 0; }
}

/* ───────── Header ───────── */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.025em;
  color: var(--fg);
}
.brand img { width: 32px; height: 32px; border-radius: 8px; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.site-nav a {
  color: var(--ink-700);
  font-weight: 500;
  font-size: 0.95rem;
}
@media (prefers-color-scheme: dark) {
  .site-nav a { color: var(--ink-200); }
}
.site-nav a:hover { color: var(--accent); }

@media (max-width: 768px) {
  .site-nav a:not(.btn) { display: none; }
}

/* ───────── Buttons ───────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: white;
  box-shadow: 0 4px 14px -4px rgba(244, 63, 94, 0.4);
}
.btn-primary:hover {
  background: var(--coral-600);
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px -4px rgba(244, 63, 94, 0.5);
}

.btn-secondary {
  background: transparent;
  color: var(--fg);
  border-color: var(--border);
}
.btn-secondary:hover {
  background: var(--surface-2);
  color: var(--fg);
}

.btn-lg {
  padding: 14px 26px;
  font-size: 1rem;
}

/* ───────── Hero ───────── */

.hero {
  position: relative;
  padding: 100px 0 80px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: -200px;
  right: -100px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(244, 63, 94, 0.18) 0%, transparent 70%);
  filter: blur(40px);
  pointer-events: none;
  z-index: 0;
}
.hero::after {
  content: "";
  position: absolute;
  bottom: -200px;
  left: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(251, 113, 133, 0.12) 0%, transparent 70%);
  filter: blur(40px);
  pointer-events: none;
  z-index: 0;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
@media (max-width: 900px) {
  .hero__inner {
    grid-template-columns: 1fr;
    gap: 56px;
  }
}

.hero__pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--surface-2);
  border: 1px solid var(--coral-100);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--coral-700);
  margin-bottom: 24px;
}
@media (prefers-color-scheme: dark) {
  .hero__pill { border-color: rgba(244, 63, 94, 0.2); color: var(--coral-400); }
}
.hero__pill::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

h1, h2, h3 {
  font-family: var(--font-display);
  letter-spacing: -0.035em;
  line-height: 1.1;
  font-weight: 700;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: 24px;
}
.hero h1 .accent {
  background: linear-gradient(135deg, var(--coral-500), var(--coral-300));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__sub {
  font-size: 1.25rem;
  color: var(--muted);
  margin-bottom: 36px;
  max-width: 540px;
}

.hero__cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero__visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Messenger-card mockup for the hero (CSS-drawn so it scales perfectly) */
.messenger-mock {
  width: 360px;
  max-width: 100%;
  background: white;
  border-radius: 18px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  font-family: var(--font-sans);
  color: var(--ink-900);
  position: relative;
}
.messenger-mock__inner { padding: 22px 22px 18px; }
.messenger-mock__header {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.025em;
  color: var(--ink-900);
}
.messenger-mock__sub {
  font-size: 0.875rem;
  color: var(--ink-500);
  margin-top: 6px;
  margin-bottom: 18px;
}
.messenger-mock__item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 12px 0;
  border-top: 1px solid #F1F5F9;
}
.messenger-mock__item:first-of-type { border-top: 0; }
.messenger-mock__pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 10px;
  height: 22px;
  border-radius: 999px;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: white;
  white-space: nowrap;
  flex-shrink: 0;
  margin-top: 2px;
}
.messenger-mock__pill--improved { background: #8B5CF6; }
.messenger-mock__pill--fixed    { background: #F97316; }
.messenger-mock__pill--new      { background: #10B981; }
.messenger-mock__title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--ink-900);
  line-height: 1.3;
}
.messenger-mock__meta {
  font-size: 0.78rem;
  color: var(--ink-500);
  margin-top: 2px;
}
.messenger-mock__cta {
  margin-top: 18px;
  background: var(--accent);
  color: white;
  text-align: center;
  padding: 11px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.9rem;
}

/* ───────── Problem / solution ───────── */

.section-eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 14px;
}

h2 {
  font-size: clamp(1.875rem, 3.5vw, 2.5rem);
  margin-bottom: 20px;
  letter-spacing: -0.03em;
}

.section-sub {
  font-size: 1.125rem;
  color: var(--muted);
  max-width: 640px;
  margin-bottom: 56px;
}

.problem {
  background: var(--surface-2);
}

.quotes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 40px;
}
@media (max-width: 700px) {
  .quotes { grid-template-columns: 1fr; }
}

.quote {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  position: relative;
}
.quote::before {
  content: "“";
  position: absolute;
  top: 8px; left: 18px;
  font-size: 4rem;
  font-family: Georgia, serif;
  color: var(--accent);
  opacity: 0.25;
  line-height: 1;
}
.quote p {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--fg);
  margin-bottom: 16px;
  padding-top: 14px;
}
.quote cite {
  font-size: 0.85rem;
  color: var(--muted);
  font-style: normal;
  font-weight: 500;
}

/* ───────── Features ───────── */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 56px;
}
@media (max-width: 900px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .feature-grid { grid-template-columns: 1fr; }
}

.feature {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all var(--transition);
}
.feature:hover {
  transform: translateY(-2px);
  border-color: var(--coral-300);
  box-shadow: var(--shadow);
}
.feature__icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--surface-2);
  color: var(--accent);
  display: grid;
  place-items: center;
  margin-bottom: 18px;
}
.feature__icon svg { width: 24px; height: 24px; }
.feature h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
  letter-spacing: -0.02em;
}
.feature p {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.6;
}

/* ───────── How it works ───────── */

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 56px;
  position: relative;
}
@media (max-width: 800px) {
  .steps { grid-template-columns: 1fr; }
}

.step {
  position: relative;
}
.step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: white;
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 16px;
}
.step h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}
.step p {
  font-size: 0.95rem;
  color: var(--muted);
}

/* ───────── Pricing ───────── */

.pricing {
  background: var(--surface-2);
}

.pricing-card {
  max-width: 480px;
  margin: 0 auto;
  background: var(--surface);
  border: 2px solid var(--accent);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.pricing-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--coral-400), var(--coral-600));
}
.pricing-card__price {
  font-size: 4.5rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  background: linear-gradient(135deg, var(--coral-500), var(--coral-700));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin: 16px 0;
}
.pricing-card__tag {
  font-size: 0.95rem;
  color: var(--muted);
  margin-bottom: 28px;
}
.pricing-card__features {
  list-style: none;
  text-align: left;
  margin: 0 0 32px;
}
.pricing-card__features li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  font-size: 0.95rem;
}
.pricing-card__features li::before {
  content: "";
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--coral-100);
  color: var(--coral-600);
  flex-shrink: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%23E11D48'><path fill-rule='evenodd' d='M16.7 5.3a1 1 0 0 1 0 1.4l-8 8a1 1 0 0 1-1.4 0l-4-4a1 1 0 1 1 1.4-1.4L8 12.6l7.3-7.3a1 1 0 0 1 1.4 0z' clip-rule='evenodd'/></svg>");
  background-size: 14px;
  background-repeat: no-repeat;
  background-position: center;
}

/* ───────── FAQ ───────── */

.faq-list {
  margin-top: 56px;
  border-top: 1px solid var(--border);
}
.faq {
  border-bottom: 1px solid var(--border);
}
.faq summary {
  padding: 24px 0;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: color var(--transition);
}
.faq summary:hover { color: var(--accent); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--accent);
  transition: transform var(--transition);
}
.faq[open] summary::after { transform: rotate(45deg); }
.faq__answer {
  padding-bottom: 24px;
  color: var(--muted);
  line-height: 1.7;
  max-width: 720px;
}

/* ───────── CTA banner ───────── */

.cta-banner {
  background: linear-gradient(135deg, var(--coral-500), var(--coral-700));
  color: white;
  text-align: center;
  padding: 80px 24px;
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
  margin: 0 24px;
  max-width: calc(1200px - 48px);
  margin-left: auto;
  margin-right: auto;
}
.cta-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'><circle cx='50' cy='50' r='40' stroke='white' stroke-width='0.5' fill='none' opacity='0.1'/></svg>") repeat;
  opacity: 0.4;
}
.cta-banner > * { position: relative; z-index: 1; }
.cta-banner h2 {
  color: white;
  margin-bottom: 16px;
}
.cta-banner p {
  font-size: 1.125rem;
  opacity: 0.9;
  margin-bottom: 32px;
  max-width: 540px;
  margin-inline: auto;
}
.cta-banner .btn {
  background: white;
  color: var(--coral-700);
}
.cta-banner .btn:hover {
  background: var(--ink-50);
  color: var(--coral-700);
  transform: translateY(-1px);
}

/* ───────── Footer ───────── */

footer.site-footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 56px 0 32px;
  margin-top: 96px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
@media (max-width: 700px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 320px;
}
.footer-brand p {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.6;
}
.footer-col h4 {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--fg);
  margin-bottom: 16px;
}
.footer-col ul {
  list-style: none;
}
.footer-col li { padding: 4px 0; }
.footer-col a {
  font-size: 0.9rem;
  color: var(--muted);
}
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--muted);
  flex-wrap: wrap;
  gap: 12px;
}

/* ───────── Animations ───────── */

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
.hero h1, .hero__sub, .hero__cta, .hero__visual {
  animation: fadeUp 0.6s ease-out backwards;
}
.hero__sub  { animation-delay: 0.1s; }
.hero__cta  { animation-delay: 0.2s; }
.hero__visual { animation-delay: 0.3s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}

/* ───────── Article (privacy / terms) ───────── */

.article {
  max-width: 760px;
  margin: 0 auto;
  padding: 80px 24px;
}
.article h1 {
  font-size: 2.5rem;
  margin-bottom: 12px;
  letter-spacing: -0.03em;
}
.article .meta {
  color: var(--muted);
  margin-bottom: 48px;
  font-size: 0.95rem;
}
.article h2 {
  font-size: 1.5rem;
  margin: 48px 0 16px;
  letter-spacing: -0.02em;
}
.article h3 {
  font-size: 1.15rem;
  margin: 28px 0 10px;
}
.article p, .article li {
  color: var(--ink-700);
  line-height: 1.75;
  margin-bottom: 16px;
}
@media (prefers-color-scheme: dark) {
  .article p, .article li { color: var(--ink-200); }
}
.article ul, .article ol { padding-left: 24px; margin-bottom: 16px; }
.article a {
  text-decoration: underline;
  text-decoration-color: rgba(244, 63, 94, 0.3);
  text-underline-offset: 3px;
}
.article a:hover { text-decoration-color: var(--accent); }
.article code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 2px 6px;
  background: var(--surface-2);
  border-radius: 4px;
}