/* ------------------------------------------------------------------ */
/*  CognAI — cogn.ai                                                   */
/* ------------------------------------------------------------------ */

:root {
  --bg: #0a0c10;
  --bg-raised: #12151c;
  --border: rgba(255, 255, 255, 0.08);
  --text: #e8eaf0;
  --text-muted: #9aa1b0;
  --accent: #f4aec5;
  --accent-strong: #ef8fb0;
  --violet: #a78bfa;
  --radius: 16px;
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection {
  background: var(--accent);
  color: #1a0d14;
}

img {
  max-width: 100%;
  display: block;
}

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

a:hover {
  color: var(--accent-strong);
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

/* ---------------------------------------------------------------- */
/*  Background glows                                                 */
/* ---------------------------------------------------------------- */

.glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.16;
  pointer-events: none;
  z-index: 0;
}

.glow-pink {
  width: 640px;
  height: 640px;
  background: var(--accent);
  top: -220px;
  right: -160px;
}

.glow-violet {
  width: 520px;
  height: 520px;
  background: var(--violet);
  bottom: -200px;
  left: -180px;
  opacity: 0.10;
}

/* ---------------------------------------------------------------- */
/*  Nav                                                              */
/* ---------------------------------------------------------------- */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(10, 12, 16, 0.72);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--text);
  letter-spacing: 0.06em;
}

.nav-brand img {
  height: 34px;
  width: auto;
}

.nav-links {
  display: flex;
  gap: 1.75rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

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

/* ---------------------------------------------------------------- */
/*  Hero                                                             */
/* ---------------------------------------------------------------- */

.hero {
  position: relative;
  z-index: 1;
  padding: 11rem 0 6rem;
  text-align: center;
}

.hero-logo {
  height: 130px;
  width: auto;
  margin: 0 auto 2.25rem;
  filter: drop-shadow(0 0 40px rgba(244, 174, 197, 0.35));
}

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  max-width: 18ch;
  margin: 0 auto 1.25rem;
}

.gradient-text {
  background: linear-gradient(100deg, var(--accent) 10%, var(--violet) 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p {
  color: var(--text-muted);
  font-size: 1.2rem;
  max-width: 46ch;
  margin: 0 auto 2.5rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.7rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn-primary {
  background: linear-gradient(100deg, var(--accent), var(--accent-strong));
  color: #1a0d14;
  box-shadow: 0 4px 24px rgba(244, 174, 197, 0.25);
}

.btn-primary:hover {
  color: #1a0d14;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(244, 174, 197, 0.4);
}

.btn-ghost {
  color: var(--text);
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
}

.btn-ghost:hover {
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.hero-badges {
  display: flex;
  gap: 0.6rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 3.5rem;
}

.badge {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
}

/* ---------------------------------------------------------------- */
/*  Sections                                                         */
/* ---------------------------------------------------------------- */

section {
  position: relative;
  z-index: 1;
  padding: 5.5rem 0;
}

.section-kicker {
  display: block;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin-bottom: 1rem;
}

.section-intro {
  color: var(--text-muted);
  max-width: 60ch;
  margin-bottom: 3rem;
}

/* ---------------------------------------------------------------- */
/*  Work                                                             */
/* ---------------------------------------------------------------- */

.work-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}

.card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(244, 174, 197, 0.35);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.45);
}

.card-media {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.card:hover .card-media img {
  transform: scale(1.03);
}

.card-media.is-diagram {
  background: #f7f5f2;
}

.card-media.is-diagram img {
  object-fit: contain;
  padding: 1.25rem;
}

.card-body {
  padding: 1.6rem 1.6rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  flex: 1;
}

.card h3 {
  font-size: 1.3rem;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tag {
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(244, 174, 197, 0.09);
  border: 1px solid rgba(244, 174, 197, 0.22);
  border-radius: 999px;
  padding: 0.2rem 0.65rem;
}

.card p {
  color: var(--text-muted);
  font-size: 0.97rem;
  flex: 1;
}

.card-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.2rem;
  font-size: 0.92rem;
  font-weight: 500;
}

.card-links a::after {
  content: "↗";
  margin-left: 0.3rem;
  font-size: 0.8em;
}

/* ---------------------------------------------------------------- */
/*  About                                                            */
/* ---------------------------------------------------------------- */

.about-lead {
  font-size: 1.25rem;
  max-width: 62ch;
  color: var(--text);
  margin-bottom: 3rem;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.about-item {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
}

.about-item .icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: rgba(244, 174, 197, 0.1);
  border: 1px solid rgba(244, 174, 197, 0.25);
  color: var(--accent);
  margin-bottom: 1.1rem;
}

.about-item h3 {
  font-size: 1.12rem;
  margin-bottom: 0.55rem;
}

.about-item p {
  color: var(--text-muted);
  font-size: 0.96rem;
}

/* ---------------------------------------------------------------- */
/*  Contact                                                          */
/* ---------------------------------------------------------------- */

.contact {
  text-align: center;
}

.contact-card {
  background: linear-gradient(160deg, rgba(244, 174, 197, 0.08), rgba(167, 139, 250, 0.06));
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 4rem 2rem;
}

.contact .section-intro {
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 2.25rem;
}

.socials {
  display: flex;
  justify-content: center;
  gap: 1.1rem;
  margin-top: 2.5rem;
}

.socials a {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--border);
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.03);
  transition: color 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}

.socials a:hover {
  color: var(--accent);
  border-color: rgba(244, 174, 197, 0.4);
  transform: translateY(-2px);
}

.socials svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* ---------------------------------------------------------------- */
/*  Footer                                                           */
/* ---------------------------------------------------------------- */

footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: 2.25rem 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ---------------------------------------------------------------- */
/*  Reveal animation                                                 */
/* ---------------------------------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .card, .card-media img, .btn, .socials a {
    transition: none;
  }
}

/* ---------------------------------------------------------------- */
/*  Responsive                                                       */
/* ---------------------------------------------------------------- */

@media (max-width: 860px) {
  .work-grid,
  .about-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 9rem;
  }

  .hero-logo {
    height: 100px;
  }
}

@media (max-width: 520px) {
  .nav-links {
    gap: 1.1rem;
  }

  .nav-brand span {
    display: none;
  }

  .contact-card {
    padding: 3rem 1.25rem;
  }
}