/* =========================================================
   BizGrow AI — Design tokens & shared styles
   Palette: deep indigo ink + marigold (offer/festival energy)
   + growth green, on a warm neutral paper background.
   Type: Sora (display) / Inter (body) / IBM Plex Mono (data)
   ========================================================= */

:root {
  --ink: #14213d;
  --ink-2: #1c2c4f;
  --ink-soft: #33436b;
  --paper: #f7f6f2;
  --paper-2: #ffffff;
  --text: #171a2b;
  --text-muted: #5b5f73;
  --line: #e6e2d8;
  --line-soft: #efece3;

  --marigold: #f5a623;
  --marigold-dark: #d98c0f;
  --marigold-tint: #fdf1dc;

  --growth: #1c8c5a;
  --growth-dark: #146b45;
  --growth-tint: #e4f5ec;

  --danger: #cf4a4a;
  --danger-tint: #fbe9e9;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;

  --shadow-sm: 0 1px 2px rgba(20, 33, 61, 0.06), 0 1px 1px rgba(20, 33, 61, 0.04);
  --shadow-md: 0 8px 24px rgba(20, 33, 61, 0.08);
  --shadow-lg: 0 20px 50px rgba(20, 33, 61, 0.14);

  --font-display: "Sora", "Segoe UI", sans-serif;
  --font-body: "Inter", "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--ink);
  margin: 0 0 0.5em;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--marigold-dark);
  font-weight: 600;
}

p { margin: 0 0 1em; color: var(--text-muted); }

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

:focus-visible {
  outline: 2.5px solid var(--marigold-dark);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: 999px;
  border: 1.5px solid transparent;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, border-color .15s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--marigold);
  color: var(--ink);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--marigold-dark); box-shadow: var(--shadow-md); }
.btn-dark {
  background: var(--ink);
  color: #fff;
}
.btn-dark:hover { background: var(--ink-2); box-shadow: var(--shadow-md); }
.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}
.btn-ghost:hover { border-color: var(--ink-soft); background: var(--paper-2); }
.btn-block { width: 100%; }
.btn-sm { padding: 9px 16px; font-size: 0.85rem; }
.btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 246, 242, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  max-width: 1160px;
  margin: 0 auto;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--ink);
}
.brand-mark {
  width: 34px; height: 34px;
  border-radius: 10px;
  background: linear-gradient(145deg, var(--marigold), var(--marigold-dark));
  display: flex; align-items: center; justify-content: center;
  color: var(--ink);
  font-weight: 800;
  font-family: var(--font-mono);
  font-size: 0.95rem;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-soft);
}
.nav-links a:hover { color: var(--ink); }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-toggle { display: none; background: none; border: none; padding: 6px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; border-radius: 2px; }

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-toggle { display: block; }
}

/* Mobile hamburger → animated X */
.nav-toggle span { transition: transform 0.2s ease, opacity 0.2s ease; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 10px 24px 20px;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}
.mobile-menu.open { display: flex; }
.mobile-menu a:not(.btn) {
  padding: 12px 4px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line-soft);
}
.mobile-menu hr { border: none; border-top: 1px solid var(--line); margin: 10px 0; }
.mobile-menu .btn { margin-top: 8px; }
@media (min-width: 861px) {
  .mobile-menu { display: none !important; }
}

/* ---------- Hero ---------- */
.hero {
  padding: 72px 0 40px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 44px; }
}
.hero h1 {
  font-size: clamp(2.1rem, 4.4vw, 3.4rem);
  margin-bottom: 0.4em;
}
.hero .lede {
  font-size: 1.1rem;
  max-width: 46ch;
  margin-bottom: 1.6em;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 28px; }
.hero-trust {
  display: flex; gap: 22px; flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}
.hero-trust strong { color: var(--ink); font-family: var(--font-body); }

/* ---- Signature visual: phone thread turning a tap into a WhatsApp offer ---- */
.phone-mock {
  position: relative;
  width: min(320px, 90%);
  margin: 0 auto;
  background: var(--ink);
  border-radius: 38px;
  padding: 14px;
  box-shadow: var(--shadow-lg);
}
.preview-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--marigold);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 5px 14px;
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
  white-space: nowrap;
}
.preview-caption {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  margin: 0 0 2px;
}
.phone-screen {
  background: #eef1e9;
  border-radius: 26px;
  overflow: hidden;
  min-height: 460px;
  display: flex;
  flex-direction: column;
}
.phone-bar {
  background: var(--growth-dark);
  color: #fff;
  padding: 14px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  display: flex; align-items: center; gap: 10px;
}
.phone-bar .dot { width: 8px; height: 8px; border-radius: 50%; background: #b9f2d4; }
.phone-body { flex: 1; padding: 16px; display: flex; flex-direction: column; gap: 10px; }
.chip-row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 4px; }
.tap-chip {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  color: var(--ink-soft);
}
.tap-chip.active { background: var(--marigold); border-color: var(--marigold); color: var(--ink); font-weight: 700; }
.bubble {
  background: #fff;
  border-radius: 14px;
  padding: 12px 14px;
  font-size: 0.84rem;
  color: var(--text);
  align-self: flex-start;
  max-width: 92%;
  box-shadow: var(--shadow-sm);
  opacity: 0;
  transform: translateY(6px);
  animation: bubble-in 0.5s ease forwards;
}
.bubble.mine { align-self: flex-end; background: var(--growth-tint); }
.bubble.typing { display: flex; gap: 4px; padding: 14px 16px; }
.bubble.typing span { width: 6px; height: 6px; border-radius: 50%; background: var(--ink-soft); animation: blink 1s infinite ease-in-out; }
.bubble.typing span:nth-child(2) { animation-delay: 0.15s; }
.bubble.typing span:nth-child(3) { animation-delay: 0.3s; }
@keyframes blink { 0%, 80%, 100% { opacity: 0.25; } 40% { opacity: 1; } }
@keyframes bubble-in { to { opacity: 1; transform: translateY(0); } }
.bubble:nth-of-type(1) { animation-delay: 0.1s; }
.bubble:nth-of-type(2) { animation-delay: 0.6s; }
.bubble:nth-of-type(3) { animation-delay: 1.3s; }

/* ---------- Sections ---------- */
.section { padding: 84px 0; }
.section-head { max-width: 640px; margin: 0 auto 44px; text-align: center; }
.section-head h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
@media (max-width: 900px) { .grid-3 { grid-template-columns: 1fr 1fr; } .grid-4 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.card {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 26px;
}
.feature-card .icon {
  width: 42px; height: 42px;
  border-radius: 12px;
  background: var(--growth-tint);
  color: var(--growth-dark);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  margin-bottom: 14px;
}
.feature-card h3 { font-size: 1.05rem; margin-bottom: 6px; }
.feature-card p { margin: 0; font-size: 0.92rem; }

.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: step; }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }
.step-card { position: relative; padding-top: 8px; }
.step-num {
  font-family: var(--font-mono);
  color: var(--marigold-dark);
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 10px;
}
.step-card h3 { font-size: 1rem; margin-bottom: 4px; }
.step-card p { font-size: 0.88rem; margin: 0; }

.biz-card {
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: var(--paper-2);
  padding: 20px;
  text-align: center;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--ink);
}
.biz-card .emoji { font-size: 1.6rem; display: block; margin-bottom: 8px; }

/* ---------- Pricing ---------- */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
@media (max-width: 900px) { .pricing-grid { grid-template-columns: 1fr; } }
.price-card {
  background: var(--paper-2);
  border: 1.5px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  display: flex;
  flex-direction: column;
}
.price-card.featured {
  border-color: var(--marigold);
  box-shadow: var(--shadow-md);
  position: relative;
}
.price-card.featured::before {
  content: "Most popular";
  position: absolute; top: -13px; left: 26px;
  background: var(--marigold);
  color: var(--ink);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  font-family: var(--font-mono);
}
.price-card h3 { font-size: 1.1rem; margin-bottom: 2px; }
.price-amt { font-family: var(--font-display); font-size: 2.1rem; font-weight: 700; color: var(--ink); margin: 8px 0 4px; }
.price-amt span { font-family: var(--font-body); font-size: 0.95rem; font-weight: 500; color: var(--text-muted); }
.price-list { list-style: none; padding: 0; margin: 18px 0 24px; flex: 1; }
.price-list li { display: flex; gap: 8px; padding: 6px 0; font-size: 0.88rem; color: var(--text); }
.price-list li::before { content: "✓"; color: var(--growth-dark); font-weight: 700; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--line); padding: 40px 0; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; }
.footer-links { display: flex; gap: 20px; font-size: 0.85rem; color: var(--text-muted); }
.lang-switch { display: flex; gap: 4px; font-size: 0.8rem; font-family: var(--font-mono); }
.lang-switch button { background: none; border: 1px solid var(--line); border-radius: 999px; padding: 5px 10px; color: var(--text-muted); }
.lang-switch button.active { background: var(--ink); color: #fff; border-color: var(--ink); }

/* ---------- Auth pages ---------- */
.auth-wrap {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
}
@media (max-width: 860px) { .auth-wrap { grid-template-columns: 1fr; } .auth-visual { display: none; } }
.auth-visual {
  background: var(--ink);
  color: #fff;
  padding: 48px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.auth-visual .quote { font-family: var(--font-display); font-size: 1.5rem; max-width: 30ch; margin-top: 40px; }
.auth-visual .quote-by { font-family: var(--font-mono); font-size: 0.8rem; color: #cbd3e6; margin-top: 14px; }
.auth-form-side {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
}
.auth-box { width: 100%; max-width: 400px; }
.auth-box h1 { font-size: 1.7rem; }
.auth-box .sub { margin-bottom: 28px; }

.field { margin-bottom: 16px; }
.field label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
}
.field input, .field select, .field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--line);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.94rem;
  background: var(--paper-2);
  color: var(--text);
  transition: border-color 0.15s ease;
}
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--marigold-dark);
  outline: none;
}
.field .hint { font-size: 0.76rem; color: var(--text-muted); margin-top: 4px; }
.field-error input { border-color: var(--danger); }
.field-error .err-msg { color: var(--danger); font-size: 0.78rem; margin-top: 4px; display: block; }

.form-msg {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.86rem;
  margin-bottom: 16px;
  display: none;
}
.form-msg.show { display: block; }
.form-msg.success { background: var(--growth-tint); color: var(--growth-dark); }
.form-msg.error { background: var(--danger-tint); color: var(--danger); }

.auth-alt { margin-top: 20px; font-size: 0.88rem; text-align: center; color: var(--text-muted); }
.auth-alt a { color: var(--marigold-dark); font-weight: 600; }
.auth-links-row { display: flex; justify-content: space-between; font-size: 0.82rem; margin-top: -6px; margin-bottom: 18px; }
.auth-links-row a { color: var(--ink-soft); }

/* ---------- Toast ---------- */
.toast-stack { position: fixed; bottom: 20px; right: 20px; z-index: 999; display: flex; flex-direction: column; gap: 10px; }
.toast {
  background: var(--ink);
  color: #fff;
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.86rem;
  box-shadow: var(--shadow-md);
  animation: toast-in 0.25s ease;
  max-width: 320px;
}
.toast.error { background: var(--danger); }
.toast.success { background: var(--growth-dark); }
@keyframes toast-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }