/*
 * Aeline Design System — CSS Custom Properties
 * Fade Growth Partner · fadegrowthpartner.com
 */

:root {
  /* Backgrounds */
  --ae-bg: #f8f7f3;
  --ae-white: #ffffff;
  --ae-dark: #131313;
  --ae-card-bg: rgba(19, 19, 19, 0.04);

  /* Text */
  --ae-text-dark: #131313;
  --ae-text-muted-on-light: #131313;
  --ae-text-on-dark: #ffffff;

  /* Accent */
  --ae-lime: #d6fd70;
  --ae-lime-hover: #c4f050;
  --ae-lime-glow: rgba(214, 253, 112, 0.3);

  /* Fonts */
  --ae-font-heading: "Plus Jakarta Sans", sans-serif;
  --ae-font-body: "Plus Jakarta Sans", sans-serif;
  --ae-font-mono: "Geist Mono", monospace;

  /* Font weights */
  --ae-weight-light: 300;
  --ae-weight-regular: 400;
  --ae-weight-medium: 500;
  --ae-weight-semibold: 600;
  --ae-weight-bold: 700;

  /* Borders & Radius */
  --ae-border-on-light: rgba(19, 19, 19, 0.08);
  --ae-border-on-dark: rgba(255, 255, 255, 0.08);
  --ae-card-radius: 16px;
  --ae-btn-radius-full: 100px;
  --ae-nav-pill-radius: 100px;

  /* Shadows */
  --ae-shadow-card: 0 2px 12px rgba(19, 19, 19, 0.06);
  --ae-shadow-hover: 0 8px 32px rgba(19, 19, 19, 0.12);

  /* Nav */
  --ae-nav-tracking: 0.12em;

  /* Layout */
  --ae-container-max: 1200px;
}

/* Container utility — used on all case study pages */
.ae-shell {
  max-width: var(--ae-container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== NAV BASE ========== */
.ae-nav {
  padding: 16px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.ae-nav__logo img {
  height: 36px;
  width: auto;
  display: block;
}
.ae-nav__menu {
  display: flex;
  align-items: center;
  gap: 32px;
}
.ae-nav__menu-item {
  font-family: var(--ae-font-mono);
  font-size: 13px;
  font-weight: var(--ae-weight-regular);
  letter-spacing: var(--ae-nav-tracking);
  text-transform: uppercase;
  text-decoration: none;
  transition: opacity 0.2s;
}
.ae-nav__menu-item:hover {
  opacity: 0.7;
}
.ae-nav__cta {
  font-family: var(--ae-font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #0a0a0a;
  background: var(--ae-lime);
  padding: 12px 24px;
  border-radius: var(--ae-nav-pill-radius);
  text-decoration: none;
  white-space: nowrap;
  transition:
    background 0.2s,
    transform 0.2s;
}
.ae-nav__cta:hover {
  background: var(--ae-lime-hover);
  transform: scale(1.03);
}
.ae-nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}
.ae-nav__hamburger span {
  width: 22px;
  height: 2px;
  border-radius: 2px;
  transition:
    transform 0.25s,
    opacity 0.2s;
  transform-origin: center;
}
@media (max-width: 768px) {
  .ae-nav {
    padding: 16px 20px;
  }
  .ae-nav__menu {
    display: none;
  }
  .ae-nav__cta {
    display: none;
  }
  .ae-nav__hamburger {
    display: flex;
  }
}

/* ── Language Toggle — Nav ── */
.fade-lang-toggle {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: 4px;
}
.fade-lang-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-family: "Inter", sans-serif;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.5px;
  color: inherit;
  opacity: 0.45;
  padding: 4px 6px;
  border-radius: 6px;
  transition:
    opacity 0.2s,
    background 0.2s;
  line-height: 1;
}
.fade-lang-btn:hover {
  opacity: 0.85;
}
.fade-lang-btn--active {
  opacity: 1;
  background: rgba(0, 122, 255, 0.12);
  color: #007aff;
}
.fade-lang-sep {
  font-size: 10px;
  opacity: 0.25;
  user-select: none;
  line-height: 1;
  color: inherit;
}

/* ── Language Toggle — Hero Pill (index.html) ── */
.fade-lang-pill {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  background: rgba(18, 40, 53, 0.3);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: 80px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12);
  padding: 4px 6px;
  margin-bottom: 20px;
  opacity: 0;
  animation: aeline-reveal 1s cubic-bezier(0.16, 1, 0.3, 1) 0.05s forwards;
}
.fade-lang-pill .fade-lang-btn {
  color: #fff;
  font-size: 11px;
  padding: 3px 7px;
}
.fade-lang-pill .fade-lang-btn--active {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  opacity: 1;
}
.fade-lang-pill .fade-lang-sep {
  color: rgba(255, 255, 255, 0.4);
}