/* ============================================================
   Estivex.com — Site-wide stylesheet (v4)
   Builds on /colors_and_type.css — adds page chrome, motion,
   layout primitives, and component patterns specific to the
   marketing site.
   ============================================================ */

@import url('../colors_and_type.css');

/* --- Reset & base --- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg-app);
  color: var(--fg-default);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
img, svg { display: block; max-width: 100%; }

/* --- Layout shells --- */
.shell { max-width: 1280px; margin: 0 auto; padding: 0 32px; }
.shell-wide { max-width: 1440px; margin: 0 auto; padding: 0 32px; }
.shell-narrow { max-width: 880px; margin: 0 auto; padding: 0 32px; }

/* --- Site nav --- */
.site-nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 16px 32px;
  display: flex; align-items: center; gap: 32px;
  background: rgba(10, 14, 26, 0.65);
  backdrop-filter: saturate(160%) blur(20px);
  -webkit-backdrop-filter: saturate(160%) blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.4s, padding 0.4s, background 0.4s;
}
.site-nav.scrolled {
  padding: 10px 32px;
  border-bottom-color: var(--border-subtle);
  background: rgba(10, 14, 26, 0.85);
}
.site-nav .brand { display: flex; align-items: center; gap: 10px; }
.site-nav .brand img { width: 28px; height: 28px; }
.site-nav .brand b {
  font-family: var(--font-display);
  font-weight: 800; font-size: 17px;
  letter-spacing: -0.02em;
}
.site-nav .brand b span { color: var(--brand); }
.site-nav .links { display: flex; gap: 4px; margin-left: 32px; }
.site-nav .links a, .site-nav .links button {
  padding: 8px 14px; border-radius: 8px;
  font-size: 13.5px; font-weight: 500;
  color: var(--fg-muted);
  background: transparent; border: none;
  transition: all 0.2s var(--ease-out-expo);
  position: relative;
}
.site-nav .links a:hover, .site-nav .links button:hover {
  color: var(--fg-default);
  background: rgba(30, 36, 56, 0.5);
}
.site-nav .links a.active {
  color: var(--fg-default);
}
.site-nav .links a.active::after {
  content: ''; position: absolute;
  bottom: 2px; left: 50%; transform: translateX(-50%);
  width: 16px; height: 2px;
  background: var(--brand);
  border-radius: 2px;
}
.site-nav .nav-right { margin-left: auto; display: flex; gap: 10px; align-items: center; }
.site-nav .cmd-k {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg-input); border: 1px solid var(--border-subtle);
  padding: 7px 12px; border-radius: 8px;
  font-size: 12.5px; color: var(--fg-faint);
  transition: all 0.2s;
}
.site-nav .cmd-k:hover { border-color: var(--border-strong); color: var(--fg-muted); }
.site-nav .cmd-k kbd {
  font-family: var(--font-mono); font-size: 10px;
  padding: 1px 5px; border-radius: 4px;
  border: 1px solid var(--border-subtle);
  color: var(--fg-faint);
}
.site-nav .btn-signin {
  font-size: 13px; font-weight: 600; padding: 8px 16px;
  color: var(--fg-default); border-radius: 8px;
  border: 1px solid var(--border-subtle);
  background: transparent;
  transition: all 0.2s;
}
.site-nav .btn-signin:hover { border-color: var(--brand); color: var(--brand); }
.site-nav .btn-demo {
  font-size: 13px; font-weight: 600; padding: 8px 16px;
  color: var(--color-obsidian); border-radius: 8px;
  border: none;
  background: var(--brand);
  transition: all 0.2s var(--ease-out-expo);
  position: relative;
}
.site-nav .btn-demo:hover {
  background: var(--brand-hover);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px -8px var(--brand);
}

/* --- Site footer --- */
.site-footer {
  background: var(--color-obsidian);
  border-top: 1px solid var(--border-subtle);
  padding: 80px 32px 32px;
  margin-top: 120px;
  position: relative;
}
.site-footer .grid {
  max-width: 1280px; margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 64px;
}
.site-footer h5 {
  font-size: 11px; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-faint);
  margin-bottom: 16px;
}
.site-footer ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.site-footer li a {
  font-size: 13.5px; color: var(--fg-muted);
  transition: color 0.2s;
}
.site-footer li a:hover { color: var(--brand); }
.site-footer .brand-col img { width: 32px; height: 32px; margin-bottom: 16px; }
.site-footer .brand-col p { font-size: 13.5px; color: var(--fg-muted); max-width: 280px; line-height: 1.65; }
.site-footer .legal {
  max-width: 1280px; margin: 0 auto;
  padding-top: 32px;
  border-top: 1px solid var(--border-subtle);
  display: flex; align-items: center; justify-content: space-between;
  font-size: 12px; color: var(--fg-faint);
}
.site-footer .legal-links { display: flex; gap: 24px; }

/* --- Buttons --- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px;
  border-radius: 10px;
  font-size: 14px; font-weight: 600;
  border: none;
  transition: all 0.25s var(--ease-out-expo);
  position: relative;
  text-decoration: none;
  white-space: nowrap;
}
.btn.primary {
  background: var(--brand);
  color: var(--color-obsidian);
}
.btn.primary:hover {
  background: var(--brand-hover);
  transform: translateY(-2px);
  box-shadow: 0 14px 36px -10px var(--brand);
}
.btn.ghost {
  background: transparent;
  color: var(--fg-default);
  border: 1px solid var(--border-subtle);
}
.btn.ghost:hover {
  border-color: var(--brand);
  color: var(--brand);
  background: var(--color-accent-subtle);
}
.btn.lg { padding: 14px 28px; font-size: 15px; }
.btn.sm { padding: 8px 14px; font-size: 12.5px; }

/* --- Section primitives --- */
.section {
  padding: 120px 32px;
  position: relative;
}
.section.compact { padding: 80px 32px; }
.section .eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--color-accent-subtle);
  color: var(--brand);
  font-family: var(--font-mono); font-size: 11px; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  margin-bottom: 20px;
}
.section h2 {
  font-family: var(--font-display);
  font-weight: 800; font-size: clamp(36px, 5vw, 56px);
  letter-spacing: -0.03em; line-height: 1.05;
  margin-bottom: 20px;
  max-width: 880px;
  text-wrap: balance;
}
.section h2 .grad {
  background: linear-gradient(135deg, var(--brand), #5EEAD4);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.section .lede {
  font-size: 18px; line-height: 1.65;
  color: var(--fg-muted);
  max-width: 680px;
  margin-bottom: 56px;
}
.section .head { display: flex; justify-content: space-between; align-items: flex-end; gap: 32px; flex-wrap: wrap; margin-bottom: 56px; }
.section .head .lede { margin-bottom: 0; }

/* --- Cards --- */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 28px;
  transition: border-color 0.3s, transform 0.3s, background 0.3s;
}
.card:hover {
  border-color: var(--border-strong);
}
.card-glow {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.card-glow::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(600px circle at var(--mx, 50%) var(--my, 50%),
    rgba(0, 212, 170, 0.08) 0%, transparent 40%);
  opacity: 0; transition: opacity 0.4s;
  pointer-events: none; z-index: -1;
}
.card-glow:hover::before { opacity: 1; }

/* --- Reveal-on-scroll primitive --- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}
.reveal.delay-1 { transition-delay: 0.1s; }
.reveal.delay-2 { transition-delay: 0.2s; }
.reveal.delay-3 { transition-delay: 0.3s; }
.reveal.delay-4 { transition-delay: 0.4s; }

/* --- Section error fallback (rainforest pattern) --- */
.section-error {
  background: var(--bg-surface);
  border: 1px dashed var(--border-strong);
  border-radius: 12px;
  padding: 32px;
  text-align: center;
  color: var(--fg-muted);
  font-size: 13px;
  max-width: 880px;
  margin: 32px auto;
}
.section-error b { color: var(--fg-default); display: block; margin-bottom: 6px; font-size: 14px; }
.section-error code {
  display: inline-block;
  font-family: var(--font-mono); font-size: 11px;
  background: var(--bg-elevated);
  padding: 2px 8px; border-radius: 4px;
  margin-top: 8px;
  color: var(--fg-faint);
}

/* --- Diagnostic panel (Cmd+Shift+D) --- */
.diag-panel {
  position: fixed; bottom: 16px; right: 16px;
  width: 320px; max-height: 60vh;
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  font-family: var(--font-mono); font-size: 11px;
  color: var(--fg-muted);
  z-index: 9999;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  display: none;
  flex-direction: column;
  overflow: hidden;
}
.diag-panel.open { display: flex; }
.diag-panel .head {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex; align-items: center; justify-content: space-between;
  font-weight: 600; color: var(--fg-default);
}
.diag-panel .head .pill { color: var(--color-success); font-size: 9px; }
.diag-panel .head .pill.bad { color: var(--color-danger); }
.diag-panel .body { flex: 1; overflow-y: auto; padding: 8px 14px; }
.diag-panel .row { padding: 6px 0; border-bottom: 1px solid var(--border-subtle); line-height: 1.5; }
.diag-panel .row:last-child { border-bottom: none; }
.diag-panel .row b { color: var(--fg-default); font-weight: 600; }
.diag-panel .row.err b { color: var(--color-danger); }
.diag-panel .empty { color: var(--fg-faint); padding: 8px 0; }

/* --- Cursor spotlight --- */
.cursor-spot {
  position: fixed;
  pointer-events: none;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,212,170,0.10) 0%, transparent 60%);
  transform: translate(-50%, -50%);
  z-index: 1;
  opacity: 0;
  transition: opacity 0.6s;
  mix-blend-mode: screen;
}
.cursor-spot.on { opacity: 1; }
@media (max-width: 900px) { .cursor-spot { display: none; } }

/* --- Responsive --- */
@media (max-width: 960px) {
  .site-nav .links { display: none; }
  .site-nav .cmd-k { display: none; }
  .site-footer .grid { grid-template-columns: 1fr 1fr; }
  .section { padding: 80px 24px; }
}
@media (max-width: 600px) {
  .site-footer .grid { grid-template-columns: 1fr; gap: 32px; }
  .site-footer .legal { flex-direction: column; gap: 16px; }
}