/* ============================================
   SAMPADA AYURVEDIC CENTRE — Layout
   Header, Footer, Navigation
   ============================================ */

/* --- Header --- */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.95); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent; transition: all var(--transition-base);
  height: var(--header-height);
}
.header.scrolled { border-bottom-color: var(--border-light); box-shadow: var(--shadow-sm); }
.header__inner { max-width: var(--container-xl); margin: 0 auto; padding: 0 var(--space-6); height: 100%; display: flex; align-items: center; justify-content: space-between; }

/* Logo */
.header__logo { display: flex; align-items: center; gap: var(--space-3); text-decoration: none; }
.header__logo-icon {
  width: 42px; height: 42px; border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary-700), var(--primary-800));
  display: flex; align-items: center; justify-content: center; color: white; font-size: 20px;
}
.header__logo-text { display: flex; flex-direction: column; }
.header__logo-name { font-family: var(--font-heading); font-weight: 800; font-size: var(--text-lg); color: var(--primary-800); line-height: 1.2; }
.header__logo-tagline { font-size: 10px; color: var(--text-muted); font-weight: 500; letter-spacing: 1px; text-transform: uppercase; }

/* Navigation */
.header__nav { display: flex; align-items: center; gap: var(--space-1); }
.nav-link {
  font-family: var(--font-primary); font-size: var(--text-sm); font-weight: 500;
  color: var(--text-secondary); padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm); transition: all var(--transition-fast);
  position: relative;
}
.nav-link:hover, .nav-link.active { color: var(--primary-700); background: var(--primary-50); }

/* Dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown.has-mega { position: static; }
.nav-dropdown__trigger { display: flex; align-items: center; gap: var(--space-1); }
.nav-dropdown__trigger svg { width: 14px; height: 14px; transition: transform var(--transition-fast); }
.nav-dropdown:hover .nav-dropdown__trigger svg { transform: rotate(180deg); }

.nav-dropdown__menu {
  position: absolute; top: 100%; left: 50%; transform: translateX(-50%) translateY(8px);
  min-width: 260px; background: var(--bg-white);
  border: 1px solid var(--border-light); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl); padding: var(--space-3);
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: all var(--transition-base);
}
.nav-dropdown:hover .nav-dropdown__menu {
  opacity: 1; visibility: visible; pointer-events: auto; transform: translateX(-50%) translateY(0);
}
.nav-dropdown__link {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-3) var(--space-4); border-radius: var(--radius-md);
  font-size: var(--text-sm); color: var(--text-secondary);
  transition: all var(--transition-fast);
}
.nav-dropdown__link:hover { background: var(--primary-50); color: var(--primary-700); }
.nav-dropdown__link-icon { width: 32px; height: 32px; border-radius: var(--radius-sm); background: var(--primary-100); display: flex; align-items: center; justify-content: center; font-size: 14px; color: var(--primary-700); flex-shrink: 0; }

/* Mega Menu */
.mega-menu {
  position: absolute; top: 100%; left: 0; right: 0;
  background: var(--bg-white); border-top: 1px solid var(--border-light);
  box-shadow: var(--shadow-xl); padding: var(--space-8) 0;
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: all var(--transition-base);
}
.nav-dropdown:hover .mega-menu {
  opacity: 1; visibility: visible; pointer-events: auto;
}
.mega-menu__inner { max-width: var(--container-xl); margin: 0 auto; padding: 0 var(--space-6); display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }
.mega-menu__column-title { font-family: var(--font-heading); font-weight: 700; font-size: var(--text-sm); color: var(--primary-800); margin-bottom: var(--space-3); text-transform: uppercase; letter-spacing: 0.5px; }
.mega-menu__link { display: block; padding: var(--space-2) 0; font-size: var(--text-sm); color: var(--text-secondary); transition: color var(--transition-fast); }
.mega-menu__link:hover { color: var(--primary-700); }

/* Header CTA */
.header__cta { display: flex; align-items: center; gap: var(--space-3); }
.header__cta .btn { padding: 10px 20px; font-size: var(--text-xs); }

/* Mobile Menu Toggle */
.header__toggle {
  display: none; width: 40px; height: 40px;
  flex-direction: column; align-items: center; justify-content: center;
  gap: 5px; cursor: pointer; z-index: 1001;
}
.header__toggle span {
  display: block; width: 22px; height: 2px; background: var(--text-primary);
  border-radius: 2px; transition: all var(--transition-base);
}
.header__toggle.active span:nth-child(1) { transform: rotate(45deg) translateY(5px); }
.header__toggle.active span:nth-child(2) { opacity: 0; }
.header__toggle.active span:nth-child(3) { transform: rotate(-45deg) translateY(-5px); }

/* Mobile Nav */
@media (max-width: 1024px) {
  .header__toggle { display: flex; }
  .header__nav {
    position: fixed; top: 0; right: -100%; width: 320px; height: 100vh;
    background: var(--bg-white); flex-direction: column; align-items: stretch;
    padding: calc(var(--header-height) + var(--space-6)) var(--space-6) var(--space-6);
    box-shadow: var(--shadow-xl); transition: right var(--transition-base);
    overflow-y: auto; gap: 0;
  }
  .header__nav.open { right: 0; }
  .nav-link { padding: var(--space-4) var(--space-4); font-size: var(--text-base); border-bottom: 1px solid var(--border-light); border-radius: 0; }
  .nav-dropdown__menu {
    position: static; transform: none; opacity: 1; visibility: visible; pointer-events: auto;
    box-shadow: none; border: none; padding: 0; min-width: auto;
    max-height: 0; overflow: hidden; transition: max-height 0.3s ease;
  }
  .nav-dropdown:hover .nav-dropdown__menu { transform: none; }
  .nav-dropdown.open .nav-dropdown__menu { max-height: 1000px; }
  .mega-menu {
    position: static; opacity: 1; visibility: visible; pointer-events: auto; box-shadow: none; padding: 0;
    max-height: 0; overflow: hidden; transition: max-height 0.3s ease;
  }
  .nav-dropdown.open .mega-menu { max-height: 1500px; padding: var(--space-4); }
  .mega-menu__inner { grid-template-columns: 1fr; }
  .header__cta { display: none; }
}

/* Mobile Overlay */
.mobile-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 999;
  opacity: 0; visibility: hidden; transition: all var(--transition-base);
}
.mobile-overlay.active { opacity: 1; visibility: visible; }

/* --- Top Bar --- */
.top-bar {
  position: absolute; top: 0; left: 0; right: 0; z-index: 1001;
  background: var(--primary-800); color: var(--text-light); height: 40px;
  font-size: var(--text-xs); display: none;
}
@media (min-width: 768px) { .top-bar { display: flex; align-items: center; } }
.top-bar__inner { max-width: var(--container-xl); margin: 0 auto; padding: 0 var(--space-6); width: 100%; display: flex; align-items: center; justify-content: space-between; }
.top-bar__left, .top-bar__right { display: flex; align-items: center; gap: var(--space-6); }
.top-bar__item { display: flex; align-items: center; gap: var(--space-2); opacity: 0.9; }
.top-bar__item a { color: var(--text-light); transition: opacity var(--transition-fast); }
.top-bar__item a:hover { opacity: 0.7; }

/* --- Footer --- */
.footer { background: var(--bg-dark); color: rgba(255,255,255,0.8); padding-top: var(--space-20); }
.footer__grid {
  max-width: var(--container-xl); margin: 0 auto; padding: 0 var(--space-6);
  display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: var(--space-12);
}
@media (max-width: 1024px) { .footer__grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-8); } }
@media (max-width: 640px) { .footer__grid { grid-template-columns: 1fr; } }

.footer__brand-name { font-family: var(--font-heading); font-weight: 800; font-size: var(--text-2xl); color: var(--text-light); margin-bottom: var(--space-4); }
.footer__brand-text { font-size: var(--text-sm); line-height: 1.8; margin-bottom: var(--space-6); }
.footer__social { display: flex; gap: var(--space-3); }
.footer__social a {
  width: 40px; height: 40px; border-radius: var(--radius-full);
  background: rgba(255,255,255,0.1); color: rgba(255,255,255,0.7);
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition-fast); font-size: 16px;
}
.footer__social a:hover { background: var(--primary-700); color: var(--text-light); transform: translateY(-2px); }

.footer__column-title { font-family: var(--font-heading); font-weight: 700; font-size: var(--text-base); color: var(--text-light); margin-bottom: var(--space-6); position: relative; padding-bottom: var(--space-3); }
.footer__column-title::after { content: ''; position: absolute; bottom: 0; left: 0; width: 32px; height: 2px; background: var(--gold-500); border-radius: 2px; }
.footer__links { display: flex; flex-direction: column; gap: var(--space-3); }
.footer__link { font-size: var(--text-sm); color: rgba(255,255,255,0.7); transition: all var(--transition-fast); display: flex; align-items: center; gap: var(--space-2); }
.footer__link:hover { color: var(--primary-400); transform: translateX(4px); }

.footer__contact-item { display: flex; align-items: flex-start; gap: var(--space-3); margin-bottom: var(--space-4); font-size: var(--text-sm); }
.footer__contact-icon { width: 36px; height: 36px; border-radius: var(--radius-full); background: rgba(255,255,255,0.08); display: flex; align-items: center; justify-content: center; flex-shrink: 0; color: var(--primary-400); font-size: 14px; }

.footer__bottom {
  margin-top: var(--space-16); padding: var(--space-6) 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  max-width: var(--container-xl); margin-left: auto; margin-right: auto; padding-left: var(--space-6); padding-right: var(--space-6);
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: var(--space-4);
}
.footer__copyright { font-size: var(--text-xs); color: rgba(255,255,255,0.5); }
.footer__bottom-links { display: flex; gap: var(--space-6); }
.footer__bottom-links a { font-size: var(--text-xs); color: rgba(255,255,255,0.5); transition: color var(--transition-fast); }
.footer__bottom-links a:hover { color: var(--primary-400); }

/* Body offset for fixed header */
body { padding-top: var(--header-height); }
@media (min-width: 768px) {
  body.has-top-bar { padding-top: calc(var(--header-height) + 40px); }
  body.has-top-bar .header { top: 40px; }
  body.has-top-bar .header.scrolled { top: 0; }
}
@media (max-width: 767px) {
  body.has-top-bar { padding-top: var(--header-height); }
  body.has-top-bar .header { top: 0; }
}

/* Mobile bottom padding for sticky CTA */
@media (max-width: 768px) { body { padding-bottom: 72px; } }