/* PRGuardX — Shared Navigation (aicodeagent-style) */
/* Include via: <link rel="stylesheet" href="/landing/nav.css"> */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --nav-h: 72px;
  --accent: #6366f1;
  --accent-light: #a5b4fc;
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: #1e293b;
  --bg-card: #12121a;
  --shadow-card: 0 2px 8px rgba(0,0,0,0.2);
}
[data-theme="light"] {
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --border: #e2e8f0;
  --bg-card: #ffffff;
  --accent: #4f46e5;
  --accent-light: #6366f1;
}

/* ─── Nav bar ─── */
.prg-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  display: grid;
  grid-template-columns: minmax(200px, 1fr) auto minmax(120px, 1fr) auto;
  align-items: center;
  gap: 20px;
  padding: 0 32px;
  background: rgba(10, 10, 15, 0.88);
  backdrop-filter: blur(20px) saturate(1.45);
  -webkit-backdrop-filter: blur(20px) saturate(1.45);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  box-shadow:
    0 1px 0 rgba(255,255,255,0.05) inset,
    0 12px 40px -16px rgba(0,0,0,0.5);
  transition: background 0.3s ease, box-shadow 0.3s ease;
  font-family: 'Inter', -apple-system, sans-serif;
}
[data-theme="light"] .prg-nav {
  background: rgba(255,255,255,0.92);
  border-bottom-color: rgba(99,102,241,0.12);
  box-shadow:
    0 1px 0 rgba(255,255,255,0.95) inset,
    0 4px 24px -8px rgba(99,102,241,0.1),
    0 1px 3px rgba(15,23,42,0.06);
}
.prg-nav--scrolled {
  background: rgba(10, 10, 15, 0.95);
  box-shadow: 0 1px 0 rgba(255,255,255,0.05) inset, 0 16px 48px -16px rgba(0,0,0,0.6);
}
[data-theme="light"] .prg-nav--scrolled {
  background: rgba(255,255,255,0.97);
  box-shadow: 0 4px 24px -8px rgba(99,102,241,0.14), 0 1px 3px rgba(15,23,42,0.08);
}

/* ─── Brand ─── */
.prg-nav__brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: inherit;
}
.prg-nav__brand-logo {
  flex-shrink: 0;
  width: 40px; height: 40px;
  position: relative;
  border-radius: 11px;
  background: rgba(255,255,255,0.04);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(99,102,241,0.32);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.08), 0 4px 16px -6px rgba(99,102,241,0.35);
  overflow: hidden;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}
[data-theme="light"] .prg-nav__brand-logo {
  background: rgba(255,255,255,0.9);
  border-color: rgba(99,102,241,0.22);
}
.prg-nav__brand:hover .prg-nav__brand-logo {
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.12), 0 8px 24px -6px rgba(99,102,241,0.5);
  transform: translateY(-1px);
}
.prg-nav__brand-shape {
  position: absolute;
  border-radius: 3px;
  background: var(--gradient-primary);
}
.prg-nav__brand-shape--a { width: 14px; height: 14px; top: 9px; left: 9px; opacity: 0.95; }
.prg-nav__brand-shape--b { width: 10px; height: 10px; top: 11px; right: 9px; opacity: 0.65; background: linear-gradient(135deg, rgba(139,92,246,0.9), rgba(99,102,241,0.5)); }
.prg-nav__brand-shape--c { width: 18px; height: 5px; bottom: 9px; left: 11px; border-radius: 2px; opacity: 0.8; }

.prg-nav__brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.prg-nav__name {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: #e2e8f0;
  white-space: nowrap;
}
[data-theme="light"] .prg-nav__name {
  color: #0f172a;
}
.prg-nav__tagline {
  font-size: 11px;
  font-weight: 500;
  color: #64748b;
  white-space: nowrap;
}
[data-theme="light"] .prg-nav__tagline {
  color: #94a3b8;
}

/* ─── Pill nav ─── */
.prg-nav__pill-wrap {
  display: flex;
  justify-content: center;
}
.prg-nav__pill {
  position: relative;
  display: inline-flex;
  align-items: stretch;
  gap: 3px;
  padding: 6px;
  border-radius: 50px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: 0 1px 0 rgba(255,255,255,0.05) inset, 0 10px 36px -14px rgba(0,0,0,0.5);
  backdrop-filter: blur(16px) saturate(1.25);
}
[data-theme="light"] .prg-nav__pill {
  background: rgba(241,245,249,0.85);
  border-color: rgba(99,102,241,0.16);
  box-shadow: 0 1px 0 rgba(255,255,255,0.95) inset, 0 4px 16px -8px rgba(99,102,241,0.12);
}

/* Sliding indicator */
.prg-nav__indicator {
  position: absolute;
  top: 6px; bottom: 6px; left: 0;
  border-radius: 50px;
  background: linear-gradient(135deg, rgba(99,102,241,0.25), rgba(139,92,246,0.15), rgba(96,165,250,0.12));
  border: 1px solid rgba(165,180,252,0.3);
  box-shadow: 0 6px 18px -8px rgba(99,102,241,0.35), 0 1px 0 rgba(255,255,255,0.14) inset;
  backdrop-filter: blur(16px);
  will-change: transform, width, opacity;
  transition: transform 0.54s cubic-bezier(0.22,1,0.36,1), width 0.64s cubic-bezier(0.34,1.06,0.64,1), opacity 0.28s ease;
  pointer-events: none;
  z-index: 0;
}
[data-theme="light"] .prg-nav__indicator {
  background: linear-gradient(135deg, rgba(99,102,241,0.14), rgba(139,92,246,0.08), rgba(147,197,253,0.1));
  border-color: rgba(99,102,241,0.22);
  box-shadow: 0 4px 14px -6px rgba(99,102,241,0.15), 0 1px 0 rgba(255,255,255,0.92) inset;
}

/* Tabs */
.prg-nav__tab {
  position: relative;
  z-index: 1;
  padding: 9px 18px;
  min-height: 38px;
  border: none;
  border-radius: 50px;
  background: transparent;
  color: #94a3b8;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  transition: color 0.3s ease, background 0.3s ease;
}
[data-theme="light"] .prg-nav__tab {
  color: #475569;
}
.prg-nav__tab:hover:not(.prg-nav__tab--active) {
  color: #e2e8f0;
  background: rgba(99,102,241,0.06);
}
[data-theme="light"] .prg-nav__tab:hover:not(.prg-nav__tab--active) {
  color: #0f172a;
  background: rgba(99,102,241,0.06);
}
.prg-nav__tab--active {
  color: #a5b4fc;
}
[data-theme="light"] .prg-nav__tab--active {
  color: #4f46e5;
}

/* ─── Actions capsule ─── */
.prg-nav__actions {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  justify-self: end;
}
.prg-nav__login {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: 50px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.05);
  font-size: 13px;
  font-weight: 600;
  color: #94a3b8;
  text-decoration: none;
  transition: color 0.22s, background 0.22s, border-color 0.22s, box-shadow 0.22s;
}
[data-theme="light"] .prg-nav__login {
  background: rgba(241,245,249,0.9);
  border-color: rgba(99,102,241,0.14);
  color: #475569;
}
.prg-nav__login:hover {
  color: #6366f1;
  border-color: rgba(99,102,241,0.4);
  background: rgba(99,102,241,0.08);
  box-shadow: 0 2px 10px rgba(99,102,241,0.15);
}
.prg-nav__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 18px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  text-decoration: none;
  white-space: nowrap;
  background: var(--gradient-primary);
  border: 1px solid rgba(255,255,255,0.14);
  box-shadow: 0 4px 16px -4px rgba(99,102,241,0.5);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.prg-nav__cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px -4px rgba(99,102,241,0.55);
}
.prg-nav__cta--ghost {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.12);
  color: #94a3b8;
  box-shadow: none;
}
[data-theme="light"] .prg-nav__cta--ghost {
  border-color: rgba(99,102,241,0.14);
  color: #475569;
}
.prg-nav__cta--ghost:hover {
  border-color: rgba(99,102,241,0.4);
  color: #6366f1;
  background: rgba(99,102,241,0.08);
}

/* ─── Theme toggle ─── */
.prg-nav__theme {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}
.prg-nav__theme-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  padding: 0;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 50px;
  background: rgba(255,255,255,0.05);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  transition: background 0.2s, border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}
[data-theme="light"] .prg-nav__theme-btn {
  background: rgba(241,245,249,0.9);
  border-color: rgba(99,102,241,0.15);
}
.prg-nav__theme-btn:hover {
  background: rgba(99,102,241,0.1);
  border-color: rgba(99,102,241,0.4);
  box-shadow: 0 2px 10px rgba(99,102,241,0.18);
  transform: translateY(-1px);
}

/* ─── Mobile hamburger ─── */
.prg-nav__menu {
  display: none;
  padding: 8px 12px;
  border-radius: 50px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.05);
  font-size: 14px;
  font-weight: 600;
  color: #e2e8f0;
  cursor: pointer;
}
[data-theme="light"] .prg-nav__menu {
  background: rgba(241,245,249,0.9);
  border-color: rgba(99,102,241,0.14);
  color: #0f172a;
}

/* ─── Mobile drawer ─── */
.prg-nav__mobile {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  z-index: 999;
  padding: 12px 32px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  background: rgba(10,14,23,0.96);
  backdrop-filter: blur(20px);
  box-shadow: 0 12px 40px -16px rgba(0,0,0,0.4);
  flex-direction: column;
  gap: 0;
}
[data-theme="light"] .prg-nav__mobile {
  background: rgba(255,255,255,0.97);
  border-bottom-color: rgba(99,102,241,0.1);
  box-shadow: 0 12px 40px -16px rgba(99,102,241,0.1);
}
.prg-nav__mobile.open { display: flex; }
.prg-nav__mobile a {
  display: block;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  color: #e2e8f0;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
}
[data-theme="light"] .prg-nav__mobile a {
  border-bottom-color: rgba(15,23,42,0.06);
  color: #0f172a;
}
.prg-nav__mobile a:last-child { border-bottom: none; }
.prg-nav__mobile-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,0.08);
}
[data-theme="light"] .prg-nav__mobile-actions {
  border-top-color: rgba(15,23,42,0.08);
}
.prg-nav__mobile-actions .prg-nav__cta {
  width: 100%;
  justify-content: center;
  border-radius: 10px;
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .prg-nav {
    grid-template-columns: 1fr auto auto;
    gap: 16px;
    padding: 0 20px;
  }
  .prg-nav__pill-wrap,
  .prg-nav__login { display: none; }
  .prg-nav__tagline { display: none; }
  .prg-nav__menu { display: inline-flex; }
}