/* ============================================================
   LITTLE GRINS PEDIATRIC DENTISTRY — Hero Site
   Standalone styles. No dependency on parent /styles.css.
   Font substitution: Plus Jakarta Sans 800 used in place of
   Helvetica Now Display Bold (source URL returned HTML, not a
   font binary; see design deviation notes in CLAUDE.md).
   ============================================================ */

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  height: 100%;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Design tokens ──────────────────────────────────────────── */
:root {
  --color-text:       #1A3A3A;
  --color-accent:     #2BB3A3;
  --color-soft-bg:    #F4EFE6;
  --color-on-accent:  #FFFFFF;
  --font-heading:     'Plus Jakarta Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-body:        'Inter', system-ui, -apple-system, sans-serif;
  --nav-height:       72px;
  --content-width:    1280px;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-soft-bg);
  overflow-x: hidden;
  min-height: 100dvh;
  min-height: 100vh;
}

/* ── Video background ───────────────────────────────────────── */
.video-wrapper {
  position: fixed;
  inset: 0;
  z-index: 0;
  background: var(--color-soft-bg);
  overflow: hidden;
}

#bg-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-overlay {
  position: absolute;
  inset: 0;
  background: rgba(26, 58, 58, 0.25);
}

/* ── Navigation ─────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 60;
  background: rgba(244, 239, 230, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(26, 58, 58, 0.08);
}

.nav-inner {
  max-width: var(--content-width);
  margin: 0 auto;
  height: 100%;
  padding: 0 clamp(16px, 4vw, 48px);
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
}

.nav-logo svg {
  fill: currentColor;
  flex-shrink: 0;
}

.nav-wordmark {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.0625rem;
  letter-spacing: -0.02em;
  line-height: 1;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
  margin: 0 auto;
}

.nav-links a {
  text-decoration: none;
  color: var(--color-text);
  font-size: 0.9375rem;
  font-weight: 500;
  opacity: 0.75;
  transition: opacity 0.18s ease;
}

.nav-links a:hover {
  opacity: 1;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: 9999px;
  padding: 10px 22px;
  font-size: 0.875rem;
  font-weight: 600;
  font-family: var(--font-body);
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 0.18s ease, filter 0.18s ease;
}

.btn:hover   { transform: scale(1.03); }
.btn:active  { transform: scale(0.97); }

.btn-primary {
  background: var(--color-accent);
  color: var(--color-on-accent);
}

.btn-primary:hover {
  filter: brightness(1.08);
}

.btn-secondary {
  background: var(--color-soft-bg);
  color: var(--color-text);
  box-shadow: inset 0 0 0 1px rgba(26, 58, 58, 0.18);
}

.btn-full {
  width: 100%;
}

/* ── Hamburger ──────────────────────────────────────────────── */
.hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text);
  border-radius: 8px;
  margin-left: auto;
  flex-shrink: 0;
  transition: background 0.18s ease;
}

.hamburger:hover {
  background: rgba(26, 58, 58, 0.08);
}

.hamburger .icon-close {
  display: none;
}

.hamburger.is-open .icon-menu {
  display: none;
}

.hamburger.is-open .icon-close {
  display: block;
}

/* ── Sheet backdrop ─────────────────────────────────────────── */
.sheet-backdrop {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: rgba(26, 58, 58, 0.35);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.sheet-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}

/* ── Mobile sheet ────────────────────────────────────────────── */
.mobile-sheet {
  position: fixed;
  top: 0;
  right: 0;
  width: min(88vw, 360px);
  height: 100dvh;
  height: 100vh;
  z-index: 51;
  background: var(--color-soft-bg);
  display: flex;
  flex-direction: column;
  padding: 20px 24px 32px;
  overflow-y: auto;
  transform: translateX(100%);
}

.mobile-sheet.is-open {
  transform: translateX(0);
}

.sheet-close {
  align-self: flex-end;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text);
  border-radius: 8px;
  flex-shrink: 0;
  margin-bottom: 24px;
  transition: background 0.18s ease;
}

.sheet-close:hover {
  background: rgba(26, 58, 58, 0.08);
}

.sheet-nav {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.sheet-link {
  display: block;
  padding: 15px 12px;
  text-decoration: none;
  color: var(--color-text);
  font-size: 1.375rem;
  font-weight: 600;
  font-family: var(--font-heading);
  border-radius: 10px;
  transition: background 0.18s ease;
}

.sheet-link:hover {
  background: rgba(26, 58, 58, 0.06);
}



.sheet-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 24px;
  border-top: 1px solid rgba(26, 58, 58, 0.1);
}

/* ── Hero ────────────────────────────────────────────────────── */
.hero {
  position: relative;
  z-index: 2;
  min-height: 100dvh;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-height) + 48px) clamp(20px, 6vw, 80px) 80px;
}

.hero-content {
  max-width: 720px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 28px;
}

/* ── Heading ─────────────────────────────────────────────────── */
.hero-heading {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(1.65rem, 5vw, 3rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.inline-icon {
  display: inline-block;
  vertical-align: middle;
  position: relative;
  top: -2px;
  width: 24px;
  height: 24px;
  fill: var(--color-text);
}

.inline-icon.sparkle-icon { margin-right: 6px; }
.inline-icon.tooth-icon   { margin: 0 6px; }
.inline-icon.heart-icon   { margin-left: 6px; }

/* ── Subtext ─────────────────────────────────────────────────── */
.hero-subtext {
  font-family: var(--font-body);
  font-size: clamp(0.9rem, 2.5vw, 1.1rem);
  line-height: 1.65;
  color: var(--color-text);
  opacity: 0.8;
  max-width: 560px;
}

/* ── CTA button ──────────────────────────────────────────────── */
.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--color-accent);
  color: var(--color-on-accent);
  border-radius: 50px;
  padding: 17px 24px;
  box-shadow: 0 4px 24px rgba(43, 179, 163, 0.32);
  min-width: 210px;
  font-weight: 600;
  font-size: 1rem;
  font-family: var(--font-body);
  text-decoration: none;
  justify-content: center;
  transition: transform 0.2s ease, filter 0.2s ease;
}

.cta-btn:hover  { transform: scale(1.04); filter: brightness(1.1); }
.cta-btn:active { transform: scale(0.96); }

.cta-icon {
  flex-shrink: 0;
}

/* ── FadeUp entrance animations ──────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0);    }
}

@media (prefers-reduced-motion: no-preference) {
  .hero-heading {
    animation: fadeUp 0.6s cubic-bezier(0.22, 1, 0.36, 1) 0s both;
  }
  .hero-subtext {
    animation: fadeUp 0.6s cubic-bezier(0.22, 1, 0.36, 1) 0.15s both;
  }
  .cta-btn {
    animation: fadeUp 0.6s cubic-bezier(0.22, 1, 0.36, 1) 0.30s both;
  }

  /* Mobile sheet slide-in */
  .mobile-sheet {
    transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
  }

  /* Mobile sheet link stagger */
  .sheet-link {
    opacity: 0;
    transform: translateX(24px);
    transition: opacity 0.28s ease, transform 0.28s ease, background 0.18s ease;
  }

  .mobile-sheet.is-open .sheet-link:nth-child(1) { opacity: 1; transform: none; transition-delay: 0.18s; }
  .mobile-sheet.is-open .sheet-link:nth-child(2) { opacity: 1; transform: none; transition-delay: 0.25s; }
  .mobile-sheet.is-open .sheet-link:nth-child(3) { opacity: 1; transform: none; transition-delay: 0.32s; }
  .mobile-sheet.is-open .sheet-link:nth-child(4) { opacity: 1; transform: none; transition-delay: 0.39s; }
  .mobile-sheet.is-open .sheet-link:nth-child(5) { opacity: 1; transform: none; transition-delay: 0.46s; }
}

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-links,
  .nav-actions {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .hero-content {
    align-items: center;
    text-align: center;
    max-width: 100%;
  }

  .hero-subtext {
    text-align: center;
  }
}