/* Simply Messenger landing — the app's WhatsApp-style palette with the green "S" accent. */
:root {
  color-scheme: light dark;
  --green: #1daa61;
  --green-deep: #15803d;
  --on-green: #fff;
  --bg: #ffffff;
  --soft: #f5f1eb;
  --card: #ffffff;
  --text: #0a0a0a;
  --secondary: #5f6263;
  --line: rgba(0, 0, 0, 0.1);
  --outgoing: #d9fdd3;
  --incoming: #ffffff;
  --read: #007bfc;
  --notice: #fff0d4;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --green: #21c063; --green-deep: #21c063; --on-green: #0a0a0a;
    --bg: #0f1010; --soft: #161717; --card: #1d1f1f; --text: #fafafa; --secondary: #a3a1a1; --line: rgba(255, 255, 255, 0.1);
    --outgoing: #144d37; --incoming: #242626; --read: #53bdeb; --notice: #1d1f1f;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.55 var(--font); -webkit-font-smoothing: antialiased; }
a { color: var(--green-deep); }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
h1, h2, h3 { line-height: 1.15; margin: 0 0 14px; }
h2 { font-size: clamp(28px, 4vw, 38px); }
h3 { font-size: 19px; }

.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px; border-radius: 24px; border: 1px solid var(--line); background: var(--card); color: var(--text); font-weight: 600; text-decoration: none; white-space: nowrap; }
.btn:hover { border-color: var(--green); }
.btn.primary { background: var(--green); border-color: var(--green); color: var(--on-green); }
.btn.primary:hover { filter: brightness(0.95); }
.btn.small { min-height: 38px; padding: 0 16px; font-size: 15px; background: var(--green); border-color: var(--green); color: var(--on-green); }

.top { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
.top-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 700; font-size: 19px; }
.brand img { border-radius: 22%; }
.top-nav { display: flex; align-items: center; gap: 22px; font-size: 15px; }
.top-nav a:not(.btn) { color: var(--secondary); text-decoration: none; }
.top-nav a:not(.btn):hover { color: var(--text); }
.lang { border: 1px solid var(--line); background: none; color: var(--secondary); border-radius: 14px; padding: 3px 10px; font: 600 13px var(--font); cursor: pointer; }

.hero { background: linear-gradient(180deg, var(--soft), var(--bg)); padding: 64px 0 72px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
.hero-icon { width: 96px; height: 96px; border-radius: 22%; box-shadow: 0 12px 32px rgba(29, 170, 97, 0.3); margin-bottom: 26px; }
.hero h1 { font-size: clamp(36px, 6vw, 60px); letter-spacing: -0.02em; }
.lead { font-size: clamp(18px, 2.2vw, 21px); color: var(--secondary); max-width: 560px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.note { color: var(--secondary); font-size: 15px; margin-top: 14px; }

.phone { justify-self: center; width: 300px; padding: 12px; border-radius: 44px; background: #111; box-shadow: 0 30px 60px rgba(0, 0, 0, 0.25); }
.phone-screen { border-radius: 34px; overflow: hidden; background: #f5f1eb; height: 560px; display: flex; flex-direction: column; color: #0a0a0a; font-size: 14px; }
.phone-head { display: flex; align-items: center; gap: 10px; padding: 34px 14px 10px; background: #fff; border-bottom: 1px solid rgba(0, 0, 0, 0.08); }
.phone-head div { display: grid; line-height: 1.2; }
.phone-head small { color: #6a6c6c; font-size: 12px; }
.ava { width: 36px; height: 36px; border-radius: 50%; background: #d42a66; color: #fff; display: grid; place-items: center; font-weight: 700; }
.phone-chat { flex: 1; padding: 14px 10px; display: flex; flex-direction: column; gap: 6px; position: relative; }
.phone-chat::before { content: ""; position: absolute; inset: 0; background: #eae0d3; -webkit-mask: url(/assets/chat-wallpaper.png) repeat 0 0 / 160px; mask: url(/assets/chat-wallpaper.png) repeat 0 0 / 160px; }
.m { position: relative; max-width: 78%; padding: 6px 9px 7px; border-radius: 8px; background: #fff; box-shadow: 0 1px 0.5px rgba(11, 20, 26, 0.13); }
.m.in { align-self: flex-start; border-top-left-radius: 0; }
.m.out { align-self: flex-end; background: #d9fdd3; border-top-right-radius: 0; }
.m i { float: right; font-style: normal; font-size: 10.5px; color: #6a6c6c; margin: 6px 0 -3px 8px; }
.m .tk { color: #6a6c6c; font-weight: 400; letter-spacing: -3px; }
.m .tk.read { color: #007bfc; }
.m.photo { padding: 3px 3px 6px; width: 70%; }
.ph { height: 120px; border-radius: 6px; background: linear-gradient(135deg, #7cc6ff, #1daa61 60%, #f6d365); }
.phone-input { display: flex; justify-content: space-between; align-items: center; margin: 8px; padding: 10px 14px; border-radius: 20px; background: #fff; color: #6a6c6c; position: relative; }
.phone-input b { color: #1daa61; }

.features, .privacy { padding: 80px 0; }
.web { padding: 80px 0; background: var(--soft); }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 26px; }
.grid.two { grid-template-columns: repeat(2, 1fr); }
.grid article { background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 24px; }
.grid p { color: var(--secondary); margin: 0; font-size: 16px; }
.fi { display: inline-grid; place-items: center; width: 48px; height: 48px; border-radius: 14px; background: color-mix(in srgb, var(--green) 14%, transparent); color: var(--green-deep); font-size: 22px; font-weight: 700; margin-bottom: 14px; }
.web-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.web-grid p { color: var(--secondary); margin: 0 0 24px; }
.limits { background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 24px 26px; }
.limits ul { margin: 0; padding-left: 20px; display: grid; gap: 10px; color: var(--secondary); font-size: 16px; }

.foot { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--secondary); font-size: 14px; }
.foot-row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }

@media (max-width: 900px) {
  .hero-grid, .web-grid { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr 1fr; }
  .top-nav a:not(.btn) { display: none; }
}
@media (max-width: 600px) {
  .hero { padding: 40px 0 56px; }
  .grid, .grid.two { grid-template-columns: 1fr; }
  .phone { width: 270px; }
  .phone-screen { height: 500px; }
  .cta .btn { width: 100%; }
  .top-nav { gap: 10px; }
  .top-nav .btn.small { padding: 0 12px; }
}