/* ============================================================
   CRM Bot — landing / marketing styles
   Soft & friendly · light · warm coral (matches app system)
   ============================================================ */

:root {
  --bg:           #FBFAF8;
  --bg-warm:      #F7F2EB;
  --surface:      #FFFFFF;
  --surface-2:    #FAF8F4;
  --surface-3:    #F2EEE7;
  --border:       #ECE7DF;
  --border-2:     #E3DCD2;
  --text:         #2A2723;
  --text-2:       #6E685F;
  --text-3:       #A39C90;

  --primary:      oklch(0.68 0.17 38);
  --primary-600:  oklch(0.62 0.18 36);
  --primary-700:  oklch(0.55 0.17 35);
  --primary-soft: oklch(0.955 0.035 50);
  --primary-soft2:oklch(0.92 0.055 50);
  --rose:         oklch(0.66 0.18 14);
  --rose-soft:    oklch(0.955 0.03 18);
  --green:        oklch(0.66 0.13 158);
  --green-soft:   oklch(0.95 0.04 158);
  --amber:        oklch(0.74 0.13 75);
  --amber-soft:   oklch(0.96 0.05 80);
  --violet:       oklch(0.62 0.15 295);
  --blue:         oklch(0.62 0.13 244);

  --zalo: #0068FF; --messenger: #0A7CFF; --instagram: #E1306C; --whatsapp: #1FAF53; --telegram: #2AABEE;

  --r-sm: 11px; --r: 14px; --r-lg: 18px; --r-xl: 24px; --r-2xl: 32px; --pill: 999px;
  --sh-xs: 0 1px 2px rgba(60,45,30,.05);
  --sh-sm: 0 1px 3px rgba(60,45,30,.06), 0 1px 2px rgba(60,45,30,.04);
  --sh:    0 4px 14px rgba(60,45,30,.07), 0 1px 3px rgba(60,45,30,.05);
  --sh-lg: 0 18px 50px rgba(60,45,30,.12), 0 6px 16px rgba(60,45,30,.07);
  --sh-pop:0 28px 80px rgba(50,38,24,.18), 0 8px 24px rgba(50,38,24,.09);
  --maxw: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.6;
  font-size: 16px;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.ms {
  font-family: 'Material Symbols Rounded'; font-weight: normal; font-style: normal;
  line-height: 1; letter-spacing: normal; text-transform: none; display: inline-flex;
  white-space: nowrap; word-wrap: normal; direction: ltr; font-feature-settings: 'liga';
  -webkit-font-smoothing: antialiased; user-select: none;
  font-variation-settings: 'opsz' 24, 'wght' 420, 'GRAD' 0, 'FILL' 0;
}
.ms.fill { font-variation-settings: 'opsz' 24, 'wght' 460, 'GRAD' 0, 'FILL' 1; }
.mono { font-family: 'JetBrains Mono', monospace; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

/* ===== nav ===== */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid transparent; transition: border-color .2s, box-shadow .2s;
}
.nav.scrolled { border-color: var(--border); box-shadow: var(--sh-xs); }
.nav-inner { display: flex; align-items: center; gap: 28px; height: 72px; }
.logo { display: flex; align-items: center; gap: 11px; font-weight: 800; font-size: 18px; letter-spacing: -.3px; }
.logo-mark {
  width: 38px; height: 38px; border-radius: 11px;
  background: linear-gradient(150deg, var(--primary), var(--rose));
  display: grid; place-items: center; color: #fff;
  box-shadow: 0 6px 16px oklch(0.66 0.18 30 / .35);
}
.logo-mark .ms { font-size: 22px; }
.nav-links { display: flex; align-items: center; gap: 6px; margin-left: 8px; }
.nav-link { padding: 8px 14px; border-radius: var(--pill); font-weight: 600; font-size: 14.5px; color: var(--text-2); transition: background .15s, color .15s; }
.nav-link:hover { background: var(--surface-3); color: var(--text); }
.nav-cta { margin-left: auto; display: flex; align-items: center; gap: 10px; }

/* ===== buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px; justify-content: center;
  font-family: inherit; font-weight: 700; font-size: 15px;
  padding: 12px 22px; border-radius: var(--pill); cursor: pointer;
  border: 1px solid transparent; transition: filter .15s, background .15s, box-shadow .15s, transform .15s; white-space: nowrap;
}
.btn .ms { font-size: 19px; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 6px 18px oklch(0.66 0.18 30 / .3); }
.btn-primary:hover { filter: brightness(1.05); box-shadow: 0 10px 26px oklch(0.66 0.18 30 / .38); }
.btn-ghost { background: var(--surface); color: var(--text); border-color: var(--border-2); box-shadow: var(--sh-xs); }
.btn-ghost:hover { background: var(--surface-2); }
.btn-soft { background: var(--primary-soft); color: var(--primary-700); }
.btn-soft:hover { background: var(--primary-soft2); }
.btn-lg { padding: 15px 28px; font-size: 16px; }
.btn-sm { padding: 9px 16px; font-size: 14px; }
.btn-white { background:#fff; color: var(--primary-700); box-shadow: var(--sh); }
.btn-white:hover { filter: brightness(1.02); }

/* ===== pills / eyebrow ===== */
.eyebrow {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--surface); border: 1px solid var(--border-2);
  padding: 6px 14px 6px 10px; border-radius: var(--pill);
  font-weight: 700; font-size: 13px; color: var(--text-2); box-shadow: var(--sh-xs);
}
.eyebrow .ms { font-size: 17px; color: var(--primary); }
.eyebrow .tag { background: var(--primary-soft); color: var(--primary-700); padding: 1px 8px; border-radius: var(--pill); font-size: 12px; }

.badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12.5px; font-weight: 700; padding: 4px 11px; border-radius: var(--pill);
  background: var(--surface-3); color: var(--text-2);
}
.badge .ms { font-size: 15px; }
.badge-green { background: var(--green-soft); color: oklch(0.45 0.12 158); }
.badge-primary { background: var(--primary-soft); color: var(--primary-700); }
.dot { width: 7px; height: 7px; border-radius: 99px; background: currentColor; }

/* ===== section scaffold ===== */
section { position: relative; }
.sec { padding: 92px 0; }
.sec-head { max-width: 680px; margin: 0 auto 52px; text-align: center; }
.sec-head.left { margin-left: 0; text-align: left; }
h1, h2, h3 { letter-spacing: -.02em; margin: 0; text-wrap: balance; }
.sec-title { font-size: clamp(30px, 4vw, 44px); font-weight: 800; line-height: 1.08; }
.sec-sub { font-size: 18px; color: var(--text-2); margin-top: 16px; line-height: 1.55; text-wrap: pretty; }
.kicker { font-weight: 800; font-size: 14px; letter-spacing: .08em; text-transform: uppercase; color: var(--primary); margin-bottom: 12px; }

/* ===== hero ===== */
.hero { padding: 56px 0 64px; overflow: hidden; position: relative; }
.hero-bg { position: absolute; inset: 0; z-index: -1; overflow: hidden; }
.hero-bg .blob { position: absolute; border-radius: 50%; filter: blur(8px); opacity: .5; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(36px, 5.2vw, 60px); font-weight: 800; line-height: 1.04; }
.hero h1 .grad { background: linear-gradient(110deg, var(--primary-600), var(--rose)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { font-size: 19px; color: var(--text-2); margin: 22px 0 30px; max-width: 540px; line-height: 1.58; }
.hero-cta { display: flex; align-items: center; gap: 13px; flex-wrap: wrap; }
.hero-trust { display: flex; align-items: center; gap: 18px; margin-top: 28px; flex-wrap: wrap; color: var(--text-3); font-size: 13.5px; font-weight: 600; }
.hero-trust .item { display: inline-flex; align-items: center; gap: 7px; }
.hero-trust .ms { font-size: 18px; color: var(--green); }

/* avatar stack */
.avstack { display: flex; align-items: center; }
.avstack img, .avstack .av { width: 34px; height: 34px; border-radius: 99px; border: 2.5px solid var(--bg); margin-left: -10px; display: grid; place-items: center; font-weight: 700; font-size: 13px; color: #fff; }
.avstack .av:first-child { margin-left: 0; }

/* ===== product mockup card ===== */
.mock {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-xl);
  box-shadow: var(--sh-pop); overflow: hidden;
}
.mock-bar { display: flex; align-items: center; gap: 7px; padding: 13px 16px; border-bottom: 1px solid var(--border); background: var(--surface-2); }
.mock-bar .tl { width: 11px; height: 11px; border-radius: 99px; }
.mock-chip { margin-left: 12px; font-size: 12px; color: var(--text-3); font-weight: 600; background: var(--surface-3); padding: 4px 12px; border-radius: 99px; }

/* chat preview */
.chat { display: flex; flex-direction: column; gap: 10px; padding: 20px; background: var(--surface-2); }
.chat-head { display: flex; align-items: center; gap: 11px; padding: 14px 16px; border-radius: var(--r); background: linear-gradient(120deg, var(--primary), var(--rose)); color: #fff; margin-bottom: 4px; }
.chat-head .ava { width: 38px; height: 38px; border-radius: 99px; background: rgba(255,255,255,.22); display: grid; place-items: center; }
.bub { max-width: 80%; padding: 11px 15px; font-size: 14.5px; line-height: 1.5; box-shadow: var(--sh-xs); }
.bub.them { align-self: flex-start; background: #fff; border: 1px solid var(--border); border-radius: 16px 16px 16px 5px; }
.bub.me { align-self: flex-end; background: var(--primary); color: #fff; border-radius: 16px 16px 5px 16px; }
.bub .src { display: inline-flex; align-items: center; gap: 5px; margin-top: 7px; font-size: 11.5px; font-weight: 700; opacity: .9; }
.typing { align-self: flex-start; display: inline-flex; gap: 5px; padding: 11px 15px; background: #fff; border: 1px solid var(--border); border-radius: 16px; }
.typing i { width: 6px; height: 6px; border-radius: 99px; background: var(--text-3); animation: tw 1.2s infinite; }
.typing i:nth-child(2){animation-delay:.2s} .typing i:nth-child(3){animation-delay:.4s}
@keyframes tw{0%,60%,100%{opacity:.3;transform:translateY(0)}30%{opacity:1;transform:translateY(-3px)}}

/* floating channel badges around mock */
.float { position: absolute; background: #fff; border: 1px solid var(--border); border-radius: var(--r); box-shadow: var(--sh-lg); padding: 10px 14px; display: flex; align-items: center; gap: 9px; font-weight: 700; font-size: 13.5px; animation: bob 5s ease-in-out infinite; }
.float .ic { width: 28px; height: 28px; border-radius: 8px; display: grid; place-items: center; color: #fff; }
@keyframes bob { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-9px)} }

/* ===== logo / channel strip ===== */
.strip { padding: 30px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: var(--surface); }
.strip-lab { text-align: center; font-size: 13px; font-weight: 700; letter-spacing: .04em; color: var(--text-3); text-transform: uppercase; margin-bottom: 20px; }
.chrow { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }
.chpill { display: inline-flex; align-items: center; gap: 9px; padding: 10px 18px; border-radius: var(--pill); background: var(--surface-2); border: 1px solid var(--border); font-weight: 700; font-size: 14.5px; color: var(--text); }
.chpill .ic { width: 26px; height: 26px; border-radius: 7px; display: grid; place-items: center; color: #fff; }

/* ===== feature cards ===== */
.fgrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.fcard { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); padding: 26px; box-shadow: var(--sh-sm); transition: transform .18s, box-shadow .18s; }
.fcard:hover { transform: translateY(-4px); box-shadow: var(--sh-lg); }
.fic { width: 50px; height: 50px; border-radius: 14px; display: grid; place-items: center; margin-bottom: 18px; }
.fic .ms { font-size: 26px; }
.fcard h3 { font-size: 19px; font-weight: 800; margin-bottom: 9px; }
.fcard p { color: var(--text-2); font-size: 15px; margin: 0; line-height: 1.55; }

/* feature span (big) */
.fspan { grid-column: span 2; display: grid; grid-template-columns: 1fr 1fr; gap: 0; overflow: hidden; padding: 0; }
.fspan .pad { padding: 30px; display: flex; flex-direction: column; justify-content: center; }

/* ===== how it works ===== */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; counter-reset: step; }
.step { position: relative; background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); padding: 28px 24px; box-shadow: var(--sh-sm); }
.step-n { width: 42px; height: 42px; border-radius: 12px; background: var(--primary-soft); color: var(--primary-700); display: grid; place-items: center; font-weight: 800; font-size: 19px; margin-bottom: 16px; }
.step h3 { font-size: 18px; font-weight: 800; margin-bottom: 8px; }
.step p { color: var(--text-2); font-size: 14.5px; margin: 0; }

/* ===== split feature (persona) ===== */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.feat-list { display: flex; flex-direction: column; gap: 18px; margin-top: 26px; }
.feat-item { display: flex; gap: 14px; align-items: flex-start; }
.feat-item .ck { width: 28px; height: 28px; border-radius: 9px; background: var(--green-soft); color: var(--green); display: grid; place-items: center; flex: none; }
.feat-item .ck .ms { font-size: 18px; }
.feat-item h4 { margin: 0 0 2px; font-size: 16px; font-weight: 800; }
.feat-item p { margin: 0; color: var(--text-2); font-size: 14.5px; }

/* persona sliders mock */
.persona-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-xl); box-shadow: var(--sh-lg); padding: 26px; }
.pslider { margin-bottom: 20px; }
.pslider .lab { display: flex; justify-content: space-between; font-size: 13.5px; font-weight: 700; margin-bottom: 9px; }
.pslider .lab .val { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--primary-700); background: var(--primary-soft); padding: 2px 8px; border-radius: 7px; }
.track { height: 7px; border-radius: 99px; background: var(--surface-3); position: relative; }
.track > i { position: absolute; left: 0; top: 0; bottom: 0; border-radius: 99px; background: var(--primary); }
.track > b { position: absolute; top: 50%; width: 18px; height: 18px; border-radius: 99px; background: var(--primary); border: 3px solid #fff; box-shadow: var(--sh); transform: translate(-50%, -50%); }

/* ===== stats band ===== */
.statband { background: linear-gradient(135deg, #2A2723, #3A332B); color: #F3EDE3; border-radius: var(--r-2xl); padding: 52px; }
.statgrid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.statgrid .num { font-size: 44px; font-weight: 800; letter-spacing: -.02em; background: linear-gradient(120deg, #fff, #F8B98C); -webkit-background-clip: text; background-clip: text; color: transparent; }
.statgrid .lab { color: #C9C0B4; font-size: 14.5px; font-weight: 600; margin-top: 4px; }

/* ===== pricing ===== */
.pgrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; align-items: stretch; }
.plan { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-xl); padding: 30px; box-shadow: var(--sh-sm); display: flex; flex-direction: column; }
.plan.feat { border: 1.5px solid var(--primary); box-shadow: var(--sh-lg); position: relative; }
.plan.feat::before { content: 'Phổ biến nhất'; position: absolute; top: -13px; left: 50%; transform: translateX(-50%); background: var(--primary); color: #fff; font-size: 12px; font-weight: 800; padding: 5px 16px; border-radius: var(--pill); box-shadow: var(--sh); }
.plan .pname { font-weight: 800; font-size: 19px; }
.plan .pdesc { color: var(--text-2); font-size: 14px; margin: 5px 0 18px; min-height: 40px; }
.plan .price { font-size: 40px; font-weight: 800; letter-spacing: -.02em; }
.plan .price small { font-size: 16px; font-weight: 600; color: var(--text-3); }
.plan ul { list-style: none; padding: 0; margin: 22px 0; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.plan li { display: flex; gap: 10px; align-items: flex-start; font-size: 14.5px; color: var(--text-2); }
.plan li .ms { font-size: 19px; color: var(--green); flex: none; }
.plan li.off { color: var(--text-3); }
.plan li.off .ms { color: var(--text-3); }

/* ===== CTA band ===== */
.ctaband {
  position: relative; overflow: hidden;
  background: linear-gradient(125deg, var(--primary), var(--rose));
  border-radius: var(--r-2xl); padding: 64px; text-align: center; color: #fff;
}
.ctaband h2 { font-size: clamp(28px, 4vw, 42px); font-weight: 800; }
.ctaband p { font-size: 18px; opacity: .94; margin: 16px auto 30px; max-width: 540px; }
.ctaband .glow { position: absolute; border-radius: 50%; background: rgba(255,255,255,.16); filter: blur(10px); }

/* ===== footer ===== */
.footer { background: var(--bg-warm); border-top: 1px solid var(--border); padding: 60px 0 32px; margin-top: 0; }
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; }
.foot-col h4 { font-size: 13px; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; color: var(--text-3); margin: 0 0 16px; }
.foot-col a { display: block; color: var(--text-2); font-size: 14.5px; font-weight: 500; padding: 5px 0; transition: color .15s; }
.foot-col a:hover { color: var(--primary-700); }
.foot-bottom { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 44px; padding-top: 24px; border-top: 1px solid var(--border); color: var(--text-3); font-size: 13.5px; }
.foot-bottom a { color: var(--text-2); font-weight: 600; }
.foot-social { display: flex; gap: 10px; }
.foot-social a { width: 38px; height: 38px; border-radius: 10px; background: var(--surface); border: 1px solid var(--border); display: grid; place-items: center; color: var(--text-2); }
.foot-social a:hover { color: var(--primary); border-color: var(--border-2); }

/* reveal on scroll */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (max-width: 920px) {
  .hero-grid, .split { grid-template-columns: 1fr; gap: 40px; }
  .fgrid, .steps, .pgrid, .statgrid { grid-template-columns: 1fr; }
  .fspan { grid-column: span 1; grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .nav-links { display: none; }
  .statband, .ctaband { padding: 36px 24px; }
}