/* =========================================================
   AB Chatbots — Design System
   ========================================================= */
:root {
  --color-primary: #0d9488;
  --color-primary-dark: #0f766e;
  --color-primary-light: #ccfbf1;
  --color-accent: #2dd4bf;
  --color-text: #1e1b2e;
  --color-text-muted: #6b7280;
  --color-bg: #ffffff;
  --color-bg-soft: #f8f8fc;
  --color-border: #e5e7eb;
  --color-success: #16a34a;
  --color-danger: #dc2626;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 3px rgba(20, 20, 43, 0.08);
  --shadow-md: 0 8px 24px rgba(20, 20, 43, 0.10);
  --shadow-lg: 0 20px 50px rgba(20, 20, 43, 0.14);
  --container-width: 1180px;
  --font-main: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { max-width: 100%; overflow-x: hidden; }
body {
  margin: 0;
  font-family: var(--font-main);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 .5em; font-weight: 700; letter-spacing: -0.02em; }
p { margin: 0 0 1em; color: var(--color-text-muted); }

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 15px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all .18s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); transform: translateY(-1px); }
.btn-outline { background: transparent; border-color: var(--color-border); color: var(--color-text); }
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn-danger { background: var(--color-danger); color: #fff; }
.btn-block { width: 100%; }
.btn-sm { padding: 8px 16px; font-size: 13px; }

/* ---------------- Header ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  font-size: 20px;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 8px;
}
.brand-mark {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  width: 34px; height: 34px;
  border-radius: 9px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}
.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a:not(.btn) { font-weight: 500; color: var(--color-text-muted); font-size: 15px; }
.main-nav a:not(.btn):hover { color: var(--color-primary); }
.nav-cta { margin-left: 4px; padding: 9px 18px; }

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  position: relative;
  z-index: 210;
  margin-left: 12px;
}
.hamburger:hover { border-color: var(--color-primary); }
.hamburger span { width: 20px; height: 2px; background: var(--color-text); border-radius: 2px; transition: all .2s; }
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------------- Hero ---------------- */
.hero {
  padding: 90px 0 70px;
  background: radial-gradient(circle at 80% 0%, #ccfbf1 0%, #ffffff 55%);
}
.hero-inner { display: grid; grid-template-columns: 1.1fr .9fr; gap: 50px; align-items: center; }
.eyebrow {
  display: inline-block;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 700;
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.hero h1 { font-size: 48px; max-width: 620px; }
.hero p.lead { font-size: 18px; max-width: 520px; }
.hero-actions { display: flex; gap: 14px; margin-top: 28px; flex-wrap: wrap; }
.hero-visual {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  padding: 20px;
}
.mock-chat-bubble {
  background: var(--color-bg-soft);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  margin-bottom: 10px;
  font-size: 14px;
  max-width: 85%;
}
.mock-chat-bubble.user { background: var(--color-primary); color: #fff; margin-left: auto; }

/* ---------------- Sections ---------------- */
section { padding: 80px 0; scroll-margin-top: 90px; }
#features, #how-it-works, #pricing, #faq, #knowledge, #embed { scroll-margin-top: 90px; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 50px; }
.section-head h2 { font-size: 34px; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  transition: transform .18s ease, box-shadow .18s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.card-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
}

.features-bg { background: var(--color-bg-soft); }

/* How it works */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; counter-reset: step; }
.step { position: relative; padding-left: 8px; }
.step-num {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}

/* Pricing */
.pricing-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; max-width: 800px; margin: 0 auto; }
.pricing-grid-3 { grid-template-columns: repeat(3, 1fr); max-width: 1080px; align-items: stretch; }
.pricing-grid-4 { grid-template-columns: repeat(4, 1fr); max-width: 1180px; align-items: stretch; }
.price-card { text-align: center; border-radius: var(--radius-lg); position: relative; display: flex; flex-direction: column; }
.price-card .price-list { flex: 1; }
.price-card.featured { border: 2px solid var(--color-primary); box-shadow: var(--shadow-md); }
.price-badge {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--color-primary); color: #fff;
  font-size: 12px; font-weight: 700; padding: 5px 14px; border-radius: 999px;
}
.price-amount { font-size: 42px; font-weight: 800; margin: 12px 0; }
.price-amount span { font-size: 15px; font-weight: 500; color: var(--color-text-muted); }
.price-list { list-style: none; padding: 0; margin: 24px 0; text-align: left; }
.price-list li { padding: 8px 0; border-bottom: 1px dashed var(--color-border); font-size: 14px; }
.price-list li::before { content: "✓ "; color: var(--color-success); font-weight: 700; }

/* FAQ */
.faq-item { border-bottom: 1px solid var(--color-border); padding: 18px 0; }
.faq-item summary { font-weight: 600; cursor: pointer; font-size: 16px; }
.faq-item p { margin-top: 10px; }

/* CTA banner */
.cta-banner {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
}
.cta-banner h2 { color: #fff; }
.cta-banner p { color: rgba(255,255,255,.85); }

/* ---------------- Footer ---------------- */
.site-footer { background: #12101c; color: #cfcbe0; padding: 60px 0 24px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 30px; }
.footer-col h4 { color: #fff; font-size: 14px; margin-bottom: 14px; }
.footer-col a { display: block; color: #a9a5c2; font-size: 14px; padding: 5px 0; }
.footer-col a:hover { color: #fff; }
.footer-brand .brand { color: #fff; }
.footer-brand p { font-size: 14px; margin-top: 10px; }
.footer-bottom { border-top: 1px solid #2a2740; margin-top: 40px; padding-top: 20px; text-align: center; font-size: 13px; color: #8f8bab; }
.footer-bottom a { color: #cfcbe0; font-weight: 600; }
.footer-bottom a:hover { color: #fff; text-decoration: underline; }

/* ---------------- Forms / Auth ---------------- */
.auth-wrap {
  min-height: calc(100vh - 72px);
  display: flex; align-items: center; justify-content: center;
  background: var(--color-bg-soft);
  padding: 40px 16px;
}
.auth-card {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 40px;
  width: 100%;
  max-width: 440px;
}
.auth-card h1 { font-size: 26px; text-align: center; }
.auth-card .sub { text-align: center; margin-bottom: 26px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 6px; }
.form-control {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-family: inherit;
  transition: border-color .15s;
}
.form-control:focus { outline: none; border-color: var(--color-primary); }
textarea.form-control { resize: vertical; min-height: 110px; }
.password-wrap { position: relative; }
.password-wrap .form-control { padding-right: 44px; }
.toggle-pw {
  position: absolute; right: 10px; top: 50%; transform: translateY(-50%);
  background: none; border: none; cursor: pointer; color: var(--color-text-muted);
  display: flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: 6px;
}
.toggle-pw:hover { background: var(--color-bg-soft); color: var(--color-primary); }
.toggle-pw svg { width: 19px; height: 19px; }
.toggle-pw .icon-eye-off { display: none; }
.auth-foot { text-align: center; margin-top: 18px; font-size: 14px; }
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  margin-bottom: 18px;
}
.alert-error { background: #fef2f2; color: var(--color-danger); border: 1px solid #fecaca; }
.alert-success { background: #f0fdf4; color: var(--color-success); border: 1px solid #bbf7d0; }
.alert-info { background: var(--color-primary-light); color: var(--color-primary-dark); border: 1px solid #99f6e4; }

/* ---------------- Dashboard ---------------- */
.app-shell { display: flex; min-height: 100vh; background: var(--color-bg-soft); }
.sidebar {
  width: 250px;
  background: #14121f;
  color: #cfcbe0;
  padding: 24px 18px;
  flex-shrink: 0;
}
.sidebar .brand { color: #fff; margin-bottom: 30px; }
.sidebar nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 4px;
  color: #b6b2cf;
}
.sidebar nav a:hover, .sidebar nav a.active { background: rgba(255,255,255,.08); color: #fff; }
.app-main { flex: 1; padding: 30px 36px; max-width: 100%; overflow-x: hidden; }
.app-topbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 28px; flex-wrap: wrap; gap: 14px;}
.app-topbar h1 { font-size: 24px; margin: 0; }

.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 30px; }
.stat-card { background: #fff; border-radius: var(--radius-md); padding: 22px; border: 1px solid var(--color-border); }
.stat-card .value { font-size: 30px; font-weight: 800; }
.stat-card .label { color: var(--color-text-muted); font-size: 13px; }

.bot-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.bot-detail-grid { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(280px, 1fr); gap: 26px; align-items: start; }
.bot-card { background: #fff; border-radius: var(--radius-md); border: 1px solid var(--color-border); padding: 22px; }
.bot-card-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.bot-icon { width: 44px; height: 44px; border-radius: 10px; object-fit: cover; background: var(--color-primary-light); }
.bot-card h3 { margin: 0; font-size: 16px; }
.bot-card .url { font-size: 12px; color: var(--color-text-muted); }
.badge { display: inline-block; font-size: 11px; font-weight: 700; padding: 3px 10px; border-radius: 999px; }
.badge-active { background: #ecfdf5; color: var(--color-success); }
.badge-inactive { background: #fef2f2; color: var(--color-danger); }
.badge-free { background: #f1f5f9; color: #475569; }
.badge-pro { background: #fffbeb; color: #b45309; }
.bot-card-actions { display: flex; gap: 8px; margin-top: 16px; }

.empty-state { text-align: center; padding: 70px 20px; color: var(--color-text-muted); }

.table-wrap { overflow-x: auto; background: #fff; border-radius: var(--radius-md); border: 1px solid var(--color-border); }
table.data-table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 700px; }
.data-table th, .data-table td { text-align: left; padding: 14px 16px; border-bottom: 1px solid var(--color-border); }
.data-table th { background: var(--color-bg-soft); font-weight: 700; font-size: 12px; text-transform: uppercase; color: var(--color-text-muted); }
.data-table tr:last-child td { border-bottom: none; }

.filter-bar { display: flex; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }
.filter-bar input, .filter-bar select { padding: 10px 14px; border: 1.5px solid var(--color-border); border-radius: var(--radius-sm); font-family: inherit;}

.currency-toggle { display: inline-flex; border: 1.5px solid var(--color-border); border-radius: var(--radius-sm); overflow: hidden; }
.ct-btn { border: none; background: #fff; padding: 8px 18px; font-weight: 600; font-size: 13px; cursor: pointer; color: var(--color-text-muted); }
.ct-btn.active { background: var(--color-primary); color: #fff; }

.code-box {
  background: #14121f;
  color: #9be9a8;
  padding: 18px;
  border-radius: var(--radius-sm);
  font-family: 'Courier New', monospace;
  font-size: 13px;
  overflow-x: auto;
  white-space: pre;
  position: relative;
}
.copy-btn { position: absolute; top: 10px; right: 10px; }

/* Live chat preview widget (used in dashboard + embed) */
.chat-preview {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #fff;
  display: flex; flex-direction: column;
  height: 480px;
  overflow: hidden;
}
.chat-preview-head {
  background: var(--color-primary);
  color: #fff;
  padding: 16px 18px;
  font-weight: 700;
  display: flex; align-items: center; gap: 10px;
}
.chat-preview-body { flex: 1; overflow-y: auto; padding: 16px; background: var(--color-bg-soft); }
.chat-msg { max-width: 80%; padding: 10px 14px; border-radius: 14px; margin-bottom: 10px; font-size: 14px; }
.chat-msg.bot { background: #fff; border: 1px solid var(--color-border); }
.chat-msg.user { background: var(--color-primary); color: #fff; margin-left: auto; }
.chat-typing { display: flex; align-items: center; gap: 5px; width: 60px; padding: 13px 14px; }
.chat-typing span { width: 7px; height: 7px; border-radius: 50%; background: var(--color-primary); opacity: .35; animation: chatTypingDot 1.2s ease-in-out infinite; }
.chat-typing span:nth-child(2) { animation-delay: .18s; }
.chat-typing span:nth-child(3) { animation-delay: .36s; }
@keyframes chatTypingDot { 0%, 60%, 100% { transform: translateY(0); opacity: .35; } 30% { transform: translateY(-6px); opacity: 1; } }
.chat-preview-foot { display: flex; border-top: 1px solid var(--color-border); }
.chat-preview-foot input { flex: 1; border: none; padding: 14px; font-family: inherit; }
.chat-preview-foot input:focus { outline: none; }
.chat-preview-foot button { border: none; background: var(--color-primary); color: #fff; padding: 0 20px; cursor: pointer; }
.chat-branding { text-align: center; font-size: 11px; color: var(--color-text-muted); padding: 6px; background: #fff; border-top: 1px solid var(--color-border); }

/* ---------------- Admin ---------------- */
.pin-boxes { display: flex; gap: 12px; justify-content: center; margin: 20px 0; }
.pin-boxes input {
  width: 52px; height: 60px; text-align: center; font-size: 24px;
  border: 1.5px solid var(--color-border); border-radius: var(--radius-sm);
}

/* ---------------- Static pages ---------------- */
.page-hero { padding: 60px 0 20px; text-align: center; }
.prose { max-width: 780px; margin: 0 auto; }
.prose h2 { margin-top: 34px; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }

/* Widget appearance pickers (create/edit chatbot) */
.appearance-row { display: flex; gap: 12px; flex-wrap: wrap; }
.color-swatch {
  position: relative;
  display: inline-flex; align-items: center; gap: 8px;
  border: 1.5px solid var(--color-border); border-radius: 999px;
  padding: 9px 16px 9px 10px; cursor: pointer;
  font-size: 14px; font-weight: 600;
  transition: border-color .15s, background .15s;
}
.color-swatch input[type="radio"] { position: absolute; opacity: 0; width: 0; height: 0; }
.color-swatch .dot { width: 18px; height: 18px; border-radius: 50%; box-shadow: inset 0 0 0 2px rgba(255,255,255,.7); flex-shrink: 0; }
.color-swatch.selected { border-color: var(--color-primary); background: var(--color-primary-light); }
.color-swatch:hover { border-color: var(--color-primary); }

/* Embed instructions accordion */
.embed-guide { margin-top: 18px; border-top: 1px solid var(--color-border); padding-top: 14px; }
.embed-guide details { border: 1px solid var(--color-border); border-radius: var(--radius-sm); margin-bottom: 8px; padding: 0; overflow: hidden; }
.embed-guide summary { cursor: pointer; padding: 12px 16px; font-weight: 700; font-size: 14px; background: var(--color-bg-soft); list-style: none; }
.embed-guide summary::-webkit-details-marker { display: none; }
.embed-guide summary::before { content: '▸ '; color: var(--color-primary); }
.embed-guide details[open] summary::before { content: '▾ '; }
.embed-guide p { padding: 12px 16px; margin: 0; font-size: 13.5px; }
.embed-guide code { background: var(--color-bg-soft); padding: 1px 6px; border-radius: 4px; font-size: 12.5px; }

/* Styled native file inputs (icon / knowledge uploads) */
input[type="file"].form-control {
  padding: 9px 12px;
  cursor: pointer;
}
input[type="file"]::file-selector-button,
input[type="file"]::-webkit-file-upload-button {
  background: var(--color-primary);
  color: #fff;
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  margin-right: 14px;
  transition: background .15s;
}
input[type="file"]:hover::file-selector-button,
input[type="file"]:hover::-webkit-file-upload-button {
  background: var(--color-primary-dark);
}

/* ---------------- Responsive ---------------- */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; }
  .grid-3, .grid-4, .steps { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid-3 { grid-template-columns: 1fr; max-width: 460px; }
  .pricing-grid-4 { grid-template-columns: repeat(2, 1fr); max-width: 640px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .bot-grid { grid-template-columns: repeat(2, 1fr); }
  .bot-detail-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .container { padding: 0 16px; }
  .hamburger { display: flex; }
  .main-nav {
    position: fixed; top: 72px; left: 0; right: 0; bottom: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 20px 24px;
    gap: 6px;
    transform: translateX(100%);
    transition: transform .25s ease;
    overflow-y: auto;
    z-index: 200;
  }
  .main-nav.open { transform: translateX(0); }
  .main-nav a:not(.btn) { padding: 12px 0; border-bottom: 1px solid var(--color-border); }
  .nav-cta { margin: 10px 0 0; text-align: center; }

  .hero { padding: 50px 0; }
  .hero h1 { font-size: 32px; }
  .grid-3, .grid-4, .steps, .pricing-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; text-align: center; }
  .footer-col a { padding: 8px 0; }

  .app-shell { flex-direction: column; }
  .sidebar { width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 14px 18px; }
  .sidebar nav { display: flex; gap: 4px; overflow-x: auto; }
  .sidebar nav a { white-space: nowrap; }
  .sidebar .brand { margin: 0; }
  .app-main { padding: 20px; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .bot-grid { grid-template-columns: 1fr; }
}