/* ================================
   ATIO — Design System
   ================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,400;0,9..144,500;0,9..144,600;0,9..144,700;1,9..144,400&family=Inter:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* Colors */
  --bg: #fafaf7;
  --bg-alt: #f3f2ec;
  --ink: #15140f;
  --ink-soft: #4a4842;
  --ink-mute: #8a877e;
  --line: #e6e4dc;
  --accent: #ff5a1f;
  --accent-soft: #fff1eb;

  /* Typography */
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Spacing */
  --max-w: 1280px;
  --pad-x: clamp(1.25rem, 4vw, 3rem);

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

/* ================================
   Layout
   ================================ */

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}

/* ================================
   Navigation
   ================================ */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 250, 247, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.25rem;
  padding-bottom: 1.25rem;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
}

.logo-dot {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  display: inline-block;
  transform: translateY(-2px);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
  font-size: 0.9rem;
  font-weight: 500;
}

.nav-links a {
  position: relative;
  transition: color 0.2s var(--ease);
}

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

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--ink);
}

.nav-cta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.65rem 1.25rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  transition: all 0.2s var(--ease);
}

.nav-cta:hover {
  background: var(--ink);
  color: var(--bg);
}

.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
}

.nav-burger span {
  width: 24px;
  height: 1.5px;
  background: var(--ink);
}

/* ================================
   Buttons
   ================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.95rem 1.75rem;
  border-radius: 999px;
  font-weight: 500;
  font-size: 0.95rem;
  transition: all 0.25s var(--ease);
  cursor: pointer;
}

.btn-primary {
  background: var(--ink);
  color: var(--bg);
}

.btn-primary:hover {
  background: var(--accent);
  transform: translateY(-1px);
}

.btn-secondary {
  border: 1px solid var(--ink);
  color: var(--ink);
}

.btn-secondary:hover {
  background: var(--ink);
  color: var(--bg);
}

.btn-arrow {
  transition: transform 0.25s var(--ease);
}

.btn:hover .btn-arrow {
  transform: translateX(3px);
}

/* ================================
   Typography Utilities
   ================================ */

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--ink-mute);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.eyebrow::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--ink-mute);
}

.display {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.02;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.italic-accent {
  font-style: italic;
  font-weight: 300;
}

/* ================================
   Footer
   ================================ */

.footer {
  border-top: 1px solid var(--line);
  margin-top: 8rem;
  padding-top: 4rem;
  padding-bottom: 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-brand h3 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.footer-brand p {
  color: var(--ink-soft);
  max-width: 300px;
  font-size: 0.95rem;
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-mute);
  margin-bottom: 1.25rem;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.footer-col a {
  font-size: 0.95rem;
  color: var(--ink-soft);
  transition: color 0.2s var(--ease);
}

.footer-col a:hover {
  color: var(--accent);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-mute);
}

/* ================================
   Animations
   ================================ */

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  animation: fadeUp 0.9s var(--ease) forwards;
}

.reveal-1 { animation-delay: 0.05s; }
.reveal-2 { animation-delay: 0.15s; }
.reveal-3 { animation-delay: 0.28s; }
.reveal-4 { animation-delay: 0.42s; }
.reveal-5 { animation-delay: 0.56s; }

/* ================================
   Responsive
   ================================ */

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-burger { display: flex; }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

/* ================================
   Profile dropdown (logged-in nav)
   ================================ */

.nav-profile {
  position: relative;
}

.nav-profile-btn {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 0.4rem 0.4rem 0.4rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s var(--ease);
  background: var(--bg);
  color: var(--ink);
}

.nav-profile-btn:hover {
  border-color: var(--ink);
}

.nav-profile-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--bg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
}

.nav-profile-name {
  padding-right: 0.25rem;
}

.nav-profile-chevron {
  font-size: 0.65rem;
  color: var(--ink-mute);
  transition: transform 0.2s var(--ease);
}

.nav-profile-btn:hover .nav-profile-chevron {
  transform: translateY(1px);
}

.nav-profile-menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  min-width: 220px;
  background: var(--bg);
  border: 1px solid var(--line);
  box-shadow: 0 8px 32px rgba(21, 20, 15, 0.08);
  z-index: 200;
  overflow: hidden;
  animation: dropDown 0.18s var(--ease);
}

@keyframes dropDown {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.nav-profile-email {
  padding: 0.85rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-mute);
  background: var(--bg-alt);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-profile-item {
  display: block;
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  text-align: left;
  color: var(--ink);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
  transition: all 0.15s var(--ease);
}

.nav-profile-item:last-child {
  border-bottom: none;
}

.nav-profile-item:hover {
  background: var(--bg-alt);
  color: var(--accent);
}

.nav-profile-admin {
  color: var(--accent);
  font-weight: 500;
}

.nav-profile-logout {
  color: var(--ink-soft);
}

.nav-profile-logout:hover {
  color: #b3261e;
}

@media (max-width: 768px) {
  .nav-profile-name { display: none; }
  .nav-profile-btn { padding: 0.3rem 0.7rem 0.3rem 0.3rem; }
}