/* SafeWAChat – Landing page */

:root {
  --bg: #0b0f14;
  --bg-alt: #111820;
  --surface: #1a2332;
  --border: #2a3544;
  --text: #e8eef5;
  --muted: #8b9bb0;
  --green: #00a884;
  --green-dim: #008f70;
  --green-glow: rgba(0, 168, 132, 0.25);
  --radius: 12px;
  --font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--green);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

.container.narrow {
  width: min(720px, 92%);
}

/* ----- Nav ----- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 15, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
}

.brand img {
  border-radius: 8px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.92rem;
  text-decoration: none;
  transition: color 0.15s;
}

.nav-links a:hover {
  color: var(--text);
}

/* ----- Buttons ----- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
  text-decoration: none !important;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--green);
  color: #fff;
}

.btn-primary:hover {
  background: var(--green-dim);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  background: var(--surface);
}

.btn-sm {
  padding: 7px 14px;
  font-size: 0.85rem;
  background: var(--green);
  color: #fff;
  border-radius: 8px;
}

.btn-sm:hover {
  background: var(--green-dim);
}

/* ----- Hero ----- */
.hero {
  padding: 72px 0 80px;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, var(--green-glow), transparent),
    var(--bg);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
}

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--green);
  background: rgba(0, 168, 132, 0.12);
  border: 1px solid rgba(0, 168, 132, 0.3);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 18px;
}

.hero h1 {
  font-size: clamp(2rem, 4.5vw, 2.85rem);
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.accent {
  color: var(--green);
}

.lead {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 480px;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 14px;
}

.hint {
  font-size: 0.85rem;
  color: var(--muted);
}

/* Mock browser window */
.mock-window {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

.mock-titlebar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 10px 14px;
  background: #0f151c;
  border-bottom: 1px solid var(--border);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }

.mock-url {
  margin-left: 10px;
  font-size: 0.75rem;
  color: var(--muted);
  background: var(--bg);
  padding: 3px 12px;
  border-radius: 6px;
}

.mock-body {
  display: grid;
  grid-template-columns: 140px 1fr;
  min-height: 260px;
}

.mock-sidebar {
  background: #0f151c;
  border-right: 1px solid var(--border);
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.mock-chat {
  display: flex;
  gap: 8px;
  align-items: center;
  padding: 6px;
  border-radius: 8px;
}

.mock-chat .avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2a3544, #1a2332);
  flex-shrink: 0;
}

.mock-chat .lines {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.line {
  height: 7px;
  border-radius: 4px;
  background: #2a3544;
}
.line.w40 { width: 40%; }
.line.w50 { width: 50%; }
.line.w60 { width: 60%; }
.line.w65 { width: 65%; }
.line.w70 { width: 70%; }
.line.w80 { width: 80%; }

.blurred .avatar,
.blurred .lines .line,
.blurred.mock-msg {
  filter: blur(5px);
}

.mock-chat-panel {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--bg-alt);
}

.mock-msg {
  max-width: 85%;
  padding: 8px 12px;
  border-radius: 10px;
  font-size: 0.8rem;
  line-height: 1.35;
}

.mock-msg.in {
  background: #1e2a38;
  align-self: flex-start;
  border-bottom-left-radius: 3px;
}

.mock-msg.out {
  background: #005c4b;
  align-self: flex-end;
  border-bottom-right-radius: 3px;
}

.hover-hint {
  margin-top: auto;
  text-align: center;
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.03em;
}

/* ----- Sections ----- */
.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 750;
  text-align: center;
  margin-bottom: 10px;
  letter-spacing: -0.02em;
}

.section-sub {
  text-align: center;
  color: var(--muted);
  margin-bottom: 40px;
  font-size: 1.05rem;
}

/* Features grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 20px;
  transition: border-color 0.15s, transform 0.15s;
}

.card:hover {
  border-color: rgba(0, 168, 132, 0.4);
  transform: translateY(-2px);
}

.icon-wrap {
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.card h3 {
  font-size: 1.05rem;
  margin-bottom: 6px;
}

.card p {
  font-size: 0.9rem;
  color: var(--muted);
}

/* Install steps */
.steps {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 22px;
  margin-bottom: 32px;
}

.steps li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.step-num {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--green);
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.steps strong {
  display: block;
  margin-bottom: 4px;
}

.steps p,
.steps pre {
  font-size: 0.9rem;
  color: var(--muted);
}

.steps code,
.steps pre code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.82rem;
  background: var(--surface);
  padding: 2px 7px;
  border-radius: 5px;
  color: #b8e0d2;
}

.steps pre {
  margin-top: 6px;
  overflow-x: auto;
}

.steps pre code {
  display: block;
  padding: 10px 14px;
}

.shortcut-box {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  font-size: 0.95rem;
  color: var(--muted);
}

.kbd {
  display: inline-block;
  background: #0f151c;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 10px;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text);
  box-shadow: 0 2px 0 var(--border);
}

/* Privacy */
.privacy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.privacy-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.privacy-item h3 {
  font-size: 1rem;
  margin-bottom: 6px;
}

.privacy-item p {
  font-size: 0.9rem;
  color: var(--muted);
}

.privacy-item code {
  font-size: 0.8rem;
  background: var(--bg);
  padding: 1px 5px;
  border-radius: 4px;
}

/* CTA */
.cta {
  padding: 72px 0;
  text-align: center;
  background:
    radial-gradient(ellipse 60% 60% at 50% 100%, var(--green-glow), transparent),
    var(--bg-alt);
}

.cta-icon {
  border-radius: 16px;
  margin-bottom: 18px;
}

.cta h2 {
  font-size: 1.7rem;
  margin-bottom: 8px;
}

.cta p {
  color: var(--muted);
  margin-bottom: 24px;
}

.cta .hero-actions {
  justify-content: center;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.footer .brand {
  font-size: 0.95rem;
}

.disclaimer,
.copy {
  font-size: 0.8rem;
  color: var(--muted);
}

/* ----- Responsive ----- */
@media (max-width: 860px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .features-grid {
    grid-template-columns: 1fr 1fr;
  }

  .nav-links a:not(.btn-sm) {
    display: none;
  }
}

@media (max-width: 560px) {
  .features-grid {
    grid-template-columns: 1fr;
  }

  .privacy-grid {
    grid-template-columns: 1fr;
  }

  .mock-body {
    grid-template-columns: 1fr;
  }

  .mock-sidebar {
    display: none;
  }

  .hero {
    padding: 48px 0 56px;
  }

  .section {
    padding: 56px 0;
  }
}

/* ----- Extra pages ----- */
.intro-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 26px;
  font-size: 1.02rem;
  color: var(--muted);
  line-height: 1.65;
}

.intro-card p + p {
  margin-top: 14px;
}

.intro-card strong {
  color: var(--text);
}

.policy h2 {
  font-size: 1.15rem;
  margin: 28px 0 10px;
  color: var(--text);
}

.policy p,
.policy li {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 10px;
}

.policy ul {
  padding-left: 22px;
  margin-bottom: 14px;
}

.policy code {
  font-size: 0.85rem;
  background: var(--surface);
  padding: 2px 6px;
  border-radius: 4px;
  color: #b8e0d2;
}

.muted {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 28px;
}

.contact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  text-decoration: none !important;
  color: inherit;
  transition: border-color 0.15s, transform 0.15s;
}

.contact-card:hover {
  border-color: rgba(0, 168, 132, 0.45);
  transform: translateY(-2px);
}

.contact-icon {
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.contact-card h3 {
  font-size: 1.05rem;
  margin-bottom: 6px;
  color: var(--text);
}

.contact-card p {
  font-size: 0.9rem;
  color: var(--muted);
  word-break: break-all;
}

.footer-links {
  display: flex;
  gap: 18px;
}

.footer-links a {
  color: var(--muted);
  font-size: 0.85rem;
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--green);
}

@media (max-width: 700px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}