/**
 * NeuralBrain Professional UI — clinical platform theme
 * Teal / slate medical identity. Distinctive type. No purple glow.
 */
@import url("https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,600;9..144,700&family=Sora:wght@400;500;600;700&display=swap");

:root {
  --nb-font: "Sora", ui-sans-serif, sans-serif;
  --nb-font-display: "Fraunces", Georgia, serif;
  --nb-ink: #07111f;
  --nb-slate: #132033;
  --nb-mist: #e8eef4;
  --nb-paper: #f3f6f9;
  --nb-line: rgba(15, 35, 55, 0.12);
  --nb-teal: #0f766e;
  --nb-teal-bright: #14b8a6;
  --nb-teal-soft: rgba(15, 118, 110, 0.12);
  --nb-signal: #0ea5a4;
  --nb-danger: #c2410c;
  --nb-warn: #b45309;
  --nb-ok: #047857;
  --nb-radius: 10px;
  --nb-radius-sm: 6px;
  --nb-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --nb-dur: 280ms;

  /* Bridge legacy tokens */
  --nb-bg: var(--nb-paper);
  --nb-surface: #ffffff;
  --nb-sidebar: #f7fafc;
  --nb-border: var(--nb-line);
  --nb-text: var(--nb-ink);
  --nb-text-secondary: #475569;
  --nb-text-muted: #64748b;
  --nb-primary: var(--nb-teal);
  --nb-primary-dark: #0d5c56;
  --nb-primary-soft: var(--nb-teal-soft);
  --nb-medical: var(--nb-teal-bright);
  --nb-success: var(--nb-ok);
  --nb-warning: var(--nb-warn);
  --nb-accent: var(--nb-teal-bright);
  --primary: var(--nb-teal);
  --secondary: #1e3a5f;
  --accent: var(--nb-teal-bright);
  --success: var(--nb-ok);
  --warning: var(--nb-warn);
  --danger: var(--nb-danger);
  --dark: var(--nb-ink);
  --darker: #040a12;
  --light: var(--nb-mist);
  --card-bg: rgba(255, 255, 255, 0.92);
  --border-color: var(--nb-line);
  --bg-primary: var(--nb-ink);
  --bg-secondary: var(--nb-slate);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --accent-cyan: var(--nb-teal-bright);
  --accent-blue: #1d4ed8;
  --accent-purple: #1e3a5f;
  --accent-pink: #be123c;
  --accent-green: var(--nb-ok);
}

[data-nb-theme="dark"],
html[data-nb-theme="dark"],
html:not([data-nb-theme]) {
  --nb-bg: #050b14;
  --nb-surface: #0d1624;
  --nb-sidebar: #0a121e;
  --nb-border: rgba(148, 163, 184, 0.14);
  --nb-text: #e8eef4;
  --nb-text-secondary: #94a3b8;
  --nb-text-muted: #64748b;
  --nb-primary: var(--nb-teal-bright);
  --nb-primary-dark: #2dd4bf;
  --nb-primary-soft: rgba(20, 184, 166, 0.14);
  --nb-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
}

html {
  scroll-behavior: smooth;
}

body,
.nb-shell,
.login-card,
.sidebar,
.main-content {
  font-family: var(--nb-font) !important;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, .navbar-brand, .nb-brand strong, .sidebar-title, .title {
  font-family: var(--nb-font-display);
  letter-spacing: -0.02em;
}

/* Soften legacy purple gradients → teal clinical */
.navbar-brand,
.sidebar-title,
.title {
  background: none !important;
  -webkit-text-fill-color: unset !important;
  color: var(--nb-teal-bright) !important;
}

.btn-primary,
.nb-btn-primary,
.glass-btn.active,
.control-btn.active {
  background: var(--nb-teal) !important;
  border-color: var(--nb-teal) !important;
  color: #fff !important;
  box-shadow: none !important;
}

.nb-nav a.active {
  background: var(--nb-primary-soft) !important;
  color: var(--nb-primary) !important;
  box-shadow: inset 3px 0 0 var(--nb-teal) !important;
}

/* Motion: presence, not noise */
@keyframes nb-fade-up {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes nb-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}
.nb-animate-in {
  animation: nb-fade-up var(--nb-dur) var(--nb-ease) both;
}
.nb-animate-in-delay-1 { animation-delay: 80ms; }
.nb-animate-in-delay-2 { animation-delay: 160ms; }
.nb-animate-in-delay-3 { animation-delay: 240ms; }

/* Clinical disclaimer strip */
.nb-clinical-banner {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  border: 1px solid rgba(180, 83, 9, 0.35);
  background: rgba(180, 83, 9, 0.08);
  color: #92400e;
  border-radius: var(--nb-radius-sm);
  font-size: 0.82rem;
  line-height: 1.45;
  margin-bottom: 1rem;
}
[data-nb-theme="dark"] .nb-clinical-banner {
  color: #fbbf24;
  background: rgba(251, 191, 36, 0.08);
}

/* Landing page */
.nb-land {
  min-height: 100vh;
  background:
    radial-gradient(1200px 600px at 70% -10%, rgba(20, 184, 166, 0.18), transparent 55%),
    radial-gradient(900px 500px at -10% 40%, rgba(30, 58, 95, 0.45), transparent 50%),
    linear-gradient(180deg, #040a12 0%, #07111f 45%, #0a1628 100%);
  color: #e8eef4;
}
.nb-land-nav {
  position: absolute;
  inset: 0 0 auto 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem clamp(1.25rem, 4vw, 3rem);
}
.nb-land-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: #f8fafc;
}
.nb-land-brand img {
  width: 40px;
  height: 40px;
  border-radius: 8px;
}
.nb-land-brand span {
  font-family: var(--nb-font-display);
  font-size: clamp(1.35rem, 2.5vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}
.nb-land-nav-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.nb-land-nav-links a {
  color: #94a3b8;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 0.85rem;
  border-radius: 6px;
  transition: color var(--nb-dur) var(--nb-ease), background var(--nb-dur) var(--nb-ease);
}
.nb-land-nav-links a:hover { color: #f8fafc; background: rgba(255,255,255,0.05); }
.nb-land-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.15rem;
  background: var(--nb-teal);
  color: #fff !important;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: transform var(--nb-dur) var(--nb-ease), background var(--nb-dur) var(--nb-ease);
}
.nb-land-cta:hover { background: #0d9488; transform: translateY(-1px); }
.nb-land-cta-ghost {
  background: transparent;
  border: 1px solid rgba(148, 163, 184, 0.35);
  color: #e2e8f0 !important;
}
.nb-land-cta-ghost:hover { border-color: var(--nb-teal-bright); background: rgba(20,184,166,0.08); }

.nb-land-hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: end;
  gap: 2rem;
  padding: 7rem clamp(1.25rem, 4vw, 3rem) 3rem;
  position: relative;
  overflow: hidden;
}
.nb-land-hero-copy {
  max-width: 34rem;
  padding-bottom: 4vh;
  animation: nb-fade-up 0.7s var(--nb-ease) both;
}
.nb-land-hero h1 {
  font-family: var(--nb-font-display);
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
  color: #f8fafc;
  margin: 0 0 1rem;
  font-weight: 700;
}
.nb-land-hero p {
  color: #94a3b8;
  font-size: 1.05rem;
  line-height: 1.6;
  margin: 0 0 1.75rem;
  max-width: 32rem;
}
.nb-land-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.nb-land-hero-visual {
  position: relative;
  min-height: 58vh;
  border-radius: 0;
  overflow: hidden;
  animation: nb-fade-in 1s var(--nb-ease) 0.15s both;
  background:
    linear-gradient(160deg, rgba(15,118,110,0.25), transparent 50%),
    url("/static/images/NeuralBrainLogo.png") center / cover no-repeat,
    linear-gradient(180deg, #0c1a2e, #07111f);
}
.nb-land-hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, #040a12 0%, transparent 28%),
    linear-gradient(0deg, #040a12 0%, transparent 35%);
  pointer-events: none;
}
.nb-land-hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
  mix-blend-mode: luminosity;
}

.nb-land-section {
  padding: 4.5rem clamp(1.25rem, 4vw, 3rem);
  border-top: 1px solid rgba(148,163,184,0.12);
}
.nb-land-section h2 {
  font-family: var(--nb-font-display);
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  margin: 0 0 0.75rem;
  color: #f8fafc;
}
.nb-land-section > p {
  color: #94a3b8;
  max-width: 36rem;
  margin: 0 0 2rem;
  line-height: 1.55;
}
.nb-land-features {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}
.nb-land-feature {
  padding: 0;
  border: none;
  background: transparent;
}
.nb-land-feature h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: #f1f5f9;
  margin: 0 0 0.4rem;
}
.nb-land-feature p {
  margin: 0;
  color: #94a3b8;
  font-size: 0.92rem;
  line-height: 1.55;
}
.nb-land-feature .mark {
  display: block;
  width: 36px;
  height: 3px;
  background: var(--nb-teal-bright);
  margin-bottom: 1rem;
  border-radius: 2px;
}
.nb-land-footer {
  padding: 2rem clamp(1.25rem, 4vw, 3rem);
  border-top: 1px solid rgba(148,163,184,0.12);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  color: #64748b;
  font-size: 0.85rem;
}

@media (max-width: 900px) {
  .nb-land-hero {
    grid-template-columns: 1fr;
    align-items: start;
    min-height: auto;
    padding-top: 6rem;
  }
  .nb-land-hero-visual {
    min-height: 42vh;
    order: -1;
    margin: 0 -1.25rem;
    width: calc(100% + 2.5rem);
  }
  .nb-land-features { grid-template-columns: 1fr; }
  .nb-land-nav-links a:not(.nb-land-cta) { display: none; }
}

/* Auth screens */
.nb-auth-body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem 1rem;
  background:
    radial-gradient(800px 400px at 20% 0%, rgba(20,184,166,0.15), transparent 50%),
    linear-gradient(165deg, #040a12, #0a1628 60%, #07111f);
  font-family: var(--nb-font);
  color: #e8eef4;
}
.nb-auth-card {
  width: 100%;
  max-width: 420px;
  background: rgba(13, 22, 36, 0.88);
  border: 1px solid rgba(148,163,184,0.16);
  border-radius: 12px;
  padding: 2.25rem 1.75rem;
  animation: nb-fade-up 0.5s var(--nb-ease) both;
}
.nb-auth-card h1 {
  font-family: var(--nb-font-display);
  font-size: 1.75rem;
  margin: 0.5rem 0 0.35rem;
}
.nb-auth-card .sub {
  color: #94a3b8;
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}