/* css/layout.css — MăBucur Studio Layout Styles */
/* Header, footer, mobile menu overlay, pre-footer CTA, page grid */

/* ============================================================
   STICKY HEADER
   ============================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: transparent;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: var(--shadow-header);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  padding: 0 var(--container-padding);
  max-width: var(--container-max);
  margin: 0 auto;
}

/* Logo */
.logo {
  width: 140px;
  height: auto;
  display: block;
}

.logo--dark {
  display: none;
}

.logo--white {
  display: block;
}

.site-header.scrolled .logo--dark {
  display: block;
}

.site-header.scrolled .logo--white {
  display: none;
}

/* ============================================================
   DESKTOP NAVIGATION
   ============================================================ */

.main-nav {
  display: none;
}

.nav-links {
  display: flex;
  gap: var(--space-6);
  list-style: none;
  align-items: center;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--color-text-on-dark);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-base);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.site-header.scrolled .nav-links a {
  color: var(--color-text);
}

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

/* Active nav link indicator */
.nav-links a.active {
  color: var(--color-accent);
  font-weight: var(--font-weight-semibold);
}

/* ============================================================
   HAMBURGER BUTTON (mobile)
   ============================================================ */

.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-on-dark);
  transition: background var(--transition-fast);
  border-radius: 2px;
}

.site-header.scrolled .hamburger span {
  background: var(--color-text);
}

/* ============================================================
   MOBILE MENU OVERLAY
   ============================================================ */

.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--color-near-black);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
  z-index: 200;
}

.mobile-menu.open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu__close {
  position: absolute;
  top: var(--space-6);
  right: var(--space-6);
  background: none;
  border: none;
  color: var(--color-text-on-dark);
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
  padding: var(--space-2);
}

.mobile-nav-links {
  list-style: none;
  text-align: center;
  padding: 0;
  margin: 0;
}

.mobile-nav-links li {
  margin-bottom: var(--space-6);
}

.mobile-nav-links a {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-on-dark);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* ============================================================
   PRE-FOOTER CTA BANNER
   ============================================================ */

.cta-banner {
  background: var(--color-accent);
  padding: var(--space-16) var(--container-padding);
  text-align: center;
  color: var(--color-white);
}

.cta-banner h2 {
  color: var(--color-white);
  margin-bottom: var(--space-6);
}

.cta-banner p {
  color: var(--color-white);
  margin-bottom: var(--space-8);
  font-size: var(--font-size-lg);
  opacity: 0.9;
}

/* ============================================================
   FOOTER
   ============================================================ */

.site-footer {
  background: var(--bg-footer);
  color: var(--color-text-on-dark);
  padding: var(--space-16) var(--container-padding) var(--space-8);
}

.footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

.footer-col {
  display: flex;
  flex-direction: column;
}

.footer-col .logo {
  width: 120px;
  margin-bottom: var(--space-4);
}

.footer-col p {
  color: var(--color-text-on-dark);
  opacity: 0.7;
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
}

.footer-col h3 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-on-dark);
  margin-bottom: var(--space-4);
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-col ul li {
  margin-bottom: var(--space-2);
}

.footer-col a {
  color: var(--color-text-on-dark);
  text-decoration: none;
  font-size: var(--font-size-sm);
  opacity: 0.7;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

.footer-col a:hover {
  color: var(--color-accent);
  opacity: 1;
}

.footer-contact p {
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  opacity: 0.7;
}

/* Social links */
.social-links {
  display: flex;
  gap: var(--space-4);
  list-style: none;
  padding: 0;
  margin-top: var(--space-4);
  flex-wrap: wrap;
}

.social-links a {
  color: var(--color-text-on-dark);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  opacity: 0.7;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

.social-links a:hover {
  color: var(--color-accent);
  opacity: 1;
}

/* Copyright bar */
.copyright-bar {
  background: var(--bg-copyright);
  text-align: center;
  padding: var(--space-4) var(--container-padding);
  color: var(--color-text-on-dark);
  font-size: var(--font-size-sm);
  margin-top: var(--space-8);
  opacity: 0.6;
}

/* ============================================================
   RESPONSIVE BREAKPOINTS
   ============================================================ */

/* Tablet: 768px+ */
@media (min-width: 768px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

/* Desktop: 1024px+ */
@media (min-width: 1024px) {
  .main-nav {
    display: flex;
    align-items: center;
  }

  .hamburger {
    display: none;
  }
}