/* ==========================================================================
   SmartChat brand theme — a thin layer on top of Bootstrap 5.3.
   Everything Bootstrap already does (grid, spacing, navbar, accordion,
   buttons, forms) is used as-is. This file only adds brand colour and the
   few bespoke pieces Bootstrap has no component for (phone mockup, steps).
   ========================================================================== */

:root {
  /* Brand palette, taken from the logo */
  --sc-green: #25d366;
  --sc-green-600: #1eb455;
  --sc-teal: #128c7e;
  --sc-dark: #075e54;
  --sc-tint: #e9fbf0;
  --sc-tint-2: #d3f5e0;

  /* Bootstrap overrides */
  --bs-body-font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto,
                         "Helvetica Neue", Arial, sans-serif;
  --bs-body-color: #1d3140;
  --bs-emphasis-color: #0b1720;
  --bs-heading-color: #0b1720;
  --bs-border-color: #dce5ea;
  --bs-link-color: var(--sc-teal);
  --bs-link-hover-color: var(--sc-dark);
  --bs-primary: var(--sc-green-600);
  --bs-primary-rgb: 30, 180, 85;
  --bs-body-font-size: 1.0625rem;
  --bs-body-line-height: 1.65;
}

body { -webkit-font-smoothing: antialiased; }

h1, h2, h3, h4, .display-1, .display-2, .display-3, .display-4, .display-5 {
  letter-spacing: -0.025em;
  font-weight: 750;
}

/* --------------------------------------------------------- Brand bits --- */

.text-brand { color: var(--sc-teal) !important; }
.bg-brand-tint { background-color: var(--sc-tint) !important; }
.bg-brand-dark { background-color: var(--sc-dark) !important; }

.bg-brand-gradient {
  background: linear-gradient(140deg, var(--sc-dark) 0%, var(--sc-teal) 55%, var(--sc-green-600) 100%);
}

.btn-brand {
  --bs-btn-color: #fff;
  --bs-btn-bg: var(--sc-green-600);
  --bs-btn-border-color: var(--sc-green-600);
  --bs-btn-hover-color: #fff;
  --bs-btn-hover-bg: var(--sc-teal);
  --bs-btn-hover-border-color: var(--sc-teal);
  --bs-btn-active-color: #fff;
  --bs-btn-active-bg: var(--sc-dark);
  --bs-btn-active-border-color: var(--sc-dark);
  --bs-btn-focus-shadow-rgb: 37, 211, 102;
  box-shadow: 0 6px 18px rgba(30, 180, 85, .28);
}

.btn-outline-brand {
  --bs-btn-color: var(--sc-dark);
  --bs-btn-border-color: #cfdbe1;
  --bs-btn-hover-color: var(--sc-dark);
  --bs-btn-hover-bg: var(--sc-tint);
  --bs-btn-hover-border-color: var(--sc-green);
  --bs-btn-active-bg: var(--sc-tint-2);
  --bs-btn-active-border-color: var(--sc-green);
  --bs-btn-active-color: var(--sc-dark);
  --bs-btn-focus-shadow-rgb: 37, 211, 102;
}

.badge-soft {
  background-color: var(--sc-tint);
  color: var(--sc-dark);
  border: 1px solid var(--sc-tint-2);
}

.eyebrow {
  font-size: .78rem;
  font-weight: 750;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--sc-teal);
}

::selection { background: var(--sc-tint-2); color: var(--sc-dark); }

/* Icon tiles used in feature cards */
.icon-tile {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: var(--sc-tint);
  color: var(--sc-teal);
  font-size: 1.35rem;
}
.icon-tile-sm { width: 38px; height: 38px; border-radius: 11px; font-size: 1.05rem; }

/* ------------------------------------------------------------- Navbar --- */

.navbar {
  background: rgba(255, 255, 255, .88);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s, box-shadow .2s;
}
.navbar.is-stuck {
  border-bottom-color: var(--bs-border-color);
  box-shadow: 0 4px 20px rgba(11, 23, 32, .05);
}
.navbar-brand { font-weight: 800; letter-spacing: -.03em; font-size: 1.2rem; color: #0b1720; }
.navbar-brand img { width: 38px; height: 38px; border-radius: 10px; }
.navbar-brand em { font-style: normal; color: var(--sc-green-600); }
.navbar .nav-link { font-weight: 550; color: #1d3140; }
.navbar .nav-link:hover, .navbar .nav-link.active { color: var(--sc-dark); }
.navbar-collapse.show { padding-bottom: 1rem; }

/* Offset anchors so the sticky navbar never covers a heading */
:target, section[id], h2[id] { scroll-margin-top: 90px; }

/* --------------------------------------------------------------- Hero --- */

.hero {
  background:
    radial-gradient(900px 460px at 78% -12%, var(--sc-tint-2), transparent 62%),
    radial-gradient(700px 420px at 4% 8%, #eaf4ff, transparent 60%),
    #fff;
}

.hero-note i { color: var(--sc-green-600); }

/* Phone mockup — no Bootstrap equivalent, so hand-built */
.phone {
  position: relative;
  width: min(320px, 100%);
  margin-inline: auto;
  background: #0b1720;
  border-radius: 40px;
  padding: 11px;
  box-shadow: 0 24px 60px rgba(11, 23, 32, .22);
}
.phone::after {
  content: "";
  position: absolute;
  top: 18px; left: 50%;
  transform: translateX(-50%);
  width: 96px; height: 20px;
  background: #0b1720;
  border-radius: 0 0 14px 14px;
}
.phone-screen {
  border-radius: 30px;
  overflow: hidden;
  background: #e9e2db;
  display: flex;
  flex-direction: column;
  height: 528px;
}
.phone-bar { background: var(--sc-dark); color: #fff; padding: 2rem .9rem .7rem; }
.phone-bar .avatar {
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--sc-green); color: var(--sc-dark);
  display: grid; place-items: center; font-weight: 800; font-size: .85rem;
}
.phone-body {
  flex: 1;
  padding: 1rem .8rem;
  display: flex;
  flex-direction: column;
  gap: .5rem;
  overflow: hidden;
}
.bubble {
  max-width: 86%;
  padding: .5rem .7rem;
  border-radius: 12px;
  font-size: .82rem;
  line-height: 1.45;
  background: #fff;
  color: #12212c;
  box-shadow: 0 1px 1px rgba(11, 23, 32, .12);
  opacity: 0;
  transform: translateY(8px);
  animation: bubbleIn .5s cubic-bezier(.4, 0, .2, 1) forwards;
}
.bubble.in { align-self: flex-start; border-top-left-radius: 4px; }
.bubble.out { align-self: flex-end; background: #d9fdd3; border-top-right-radius: 4px; }
.bubble time { display: block; text-align: right; font-size: .62rem; color: #6b8493; }
.bubble:nth-child(1) { animation-delay: .2s; }
.bubble:nth-child(2) { animation-delay: .8s; }
.bubble:nth-child(3) { animation-delay: 1.4s; }
.bubble:nth-child(4) { animation-delay: 2s; }
.bubble .chip {
  display: inline-block;
  font-size: .7rem;
  font-weight: 600;
  color: var(--sc-teal);
  border: 1px solid var(--sc-tint-2);
  background: var(--sc-tint);
  border-radius: 999px;
  padding: .15rem .5rem;
  margin: .35rem .25rem 0 0;
}
@keyframes bubbleIn { to { opacity: 1; transform: translateY(0); } }

.phone-input { background: #e9e2db; padding: .5rem .8rem .9rem; }
.phone-input .field {
  flex: 1; background: #fff; border-radius: 999px;
  padding: .45rem .9rem; font-size: .78rem; color: #6b8493;
}
.phone-input .send {
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--sc-green-600); color: #fff;
  display: grid; place-items: center;
}

/* --------------------------------------------------------- Components --- */

.hover-lift { transition: transform .22s, box-shadow .22s, border-color .22s; }
.hover-lift:hover {
  transform: translateY(-5px);
  border-color: var(--sc-tint-2) !important;
  box-shadow: 0 12px 34px rgba(11, 23, 32, .1) !important;
}

.step-num {
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--sc-dark);
  color: #fff;
  display: grid; place-items: center;
  font-weight: 750;
  flex: none;
}

.logo-strip span {
  font-weight: 750;
  font-size: 1.02rem;
  color: #8ea3b0;
  letter-spacing: -.02em;
  transition: color .2s;
}
.logo-strip span:hover { color: #4a6472; }

.accordion-button:not(.collapsed) {
  background: var(--sc-tint);
  color: var(--sc-dark);
  box-shadow: none;
}
.accordion-button:focus { box-shadow: 0 0 0 .2rem rgba(37, 211, 102, .2); }
.accordion-button { font-weight: 650; }


footer a { color: #a9bcc7; text-decoration: none; }
footer a:hover { color: var(--sc-green); }

.back-to-top {
  position: fixed;
  right: 20px; bottom: 20px;
  width: 46px; height: 46px;
  z-index: 90;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .22s, transform .22s, visibility .22s;
}
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }

/* ---------------------------------------------------------- Reveal fx --- */

/* Only hide content when JS is available to bring it back. */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s, transform .6s; }
.js .reveal.is-visible { opacity: 1; transform: none; }

/* -------------------------------------------------------- Legal pages --- */

.legal-toc { top: 92px; }
.legal-toc .nav-link {
  font-size: .87rem;
  color: #1d3140;
  padding: .3rem .6rem;
  border-left: 2px solid transparent;
  border-radius: 0 6px 6px 0;
}
.legal-toc .nav-link:hover { background: #fff; color: var(--sc-dark); }
.legal-toc .nav-link.active {
  background: #fff;
  color: var(--sc-dark);
  font-weight: 650;
  border-left-color: var(--sc-green);
}

.legal-body { max-width: 74ch; }
.legal-body h2 { font-size: 1.4rem; margin-top: 2.6rem; }
.legal-body h2:first-child { margin-top: 0; }
.legal-body h3 { font-size: 1.05rem; margin-top: 1.6rem; }
.legal-body li { margin-bottom: .4rem; }
.legal-body address { font-style: normal; }

/* ---------------------------------------------------------- A11y prefs --- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .reveal, .bubble { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

@media print {
  .navbar, footer, .back-to-top, .legal-toc, .legal-hero { display: none !important; }
  a { text-decoration: underline; color: inherit; }
}

.badge-brand { background-color: var(--sc-green-600); color: #fff; }