/* =========================================
   NodeNepal.com — Layout: Header, Footer, Grid
   ========================================= */

/* =========================================
   HEADER / NAVIGATION
   ========================================= */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  background: var(--header-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-base);
  padding: 0 var(--space-6);
}

.site-header.scrolled {
  border-bottom-color: var(--header-border);
  box-shadow: var(--shadow-sm);
}

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

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  flex-shrink: 0;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--popular-gradient);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-weight: var(--fw-extrabold);
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
}

.logo-text {
  font-family: var(--font-heading);
  font-size: var(--fs-xl);
  font-weight: var(--fw-extrabold);
  color: var(--text-primary);
  letter-spacing: var(--ls-tight);
}

.logo-text span {
  color: var(--color-primary);
}

/* Navigation */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  position: relative;
  padding: var(--space-2) var(--space-4);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-surface-hover);
}

.nav-link.active {
  color: var(--color-primary);
  font-weight: var(--fw-semibold);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

/* Dropdown nav */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-trigger {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-dropdown-trigger .chevron {
  font-size: 10px;
  transition: transform var(--transition-fast);
}

.nav-dropdown:hover .chevron {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  padding: var(--space-2);
  min-width: 220px;
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: var(--z-dropdown);
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.nav-dropdown-item:hover {
  background: var(--bg-surface-hover);
  color: var(--text-primary);
}

.nav-dropdown-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--color-primary-50);
  color: var(--color-primary);
  font-size: var(--fs-sm);
  flex-shrink: 0;
}

.nav-dropdown-text {
  font-weight: var(--fw-medium);
}

.nav-dropdown-desc {
  font-size: var(--fs-xs);
  color: var(--text-tertiary);
}

/* Header actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Mobile menu toggle */
.mobile-menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  z-index: calc(var(--z-header) + 1);
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Overlay */
.mobile-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: calc(var(--z-header) - 1);
}

.mobile-nav-overlay.active {
  display: block;
}

/* Responsive nav */
@media (max-width: 1024px) {
  .main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    flex-direction: column;
    align-items: stretch;
    background: var(--bg-surface);
    padding: 88px var(--space-6) var(--space-6);
    box-shadow: var(--shadow-2xl);
    transition: right var(--transition-slow);
    z-index: var(--z-header);
    overflow-y: auto;
    gap: var(--space-1);
  }

  .main-nav.open {
    right: 0;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .nav-dropdown-menu {
    position: static;
    transform: none;
    box-shadow: none;
    border: none;
    padding: 0 0 0 var(--space-4);
    opacity: 1;
    visibility: visible;
    display: none;
    min-width: auto;
  }

  .nav-dropdown.open .nav-dropdown-menu {
    display: block;
  }

  .header-actions .btn {
    display: none;
  }

  .mobile-nav-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--border-default);
  }
}

@media (min-width: 1025px) {
  .mobile-nav-actions {
    display: none;
  }
}

/* =========================================
   HERO SECTIONS
   ========================================= */
.hero {
  position: relative;
  padding: calc(72px + var(--space-16)) 0 var(--space-16);
  background: var(--hero-gradient);
  overflow: hidden;
  min-height: 600px;
  display: flex;
  align-items: center;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}

.hero-center {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary-100);
  color: var(--color-primary);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: var(--ls-wider);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
  animation: fadeInDown 0.6s ease;
}

.hero h1 {
  font-size: var(--fs-5xl);
  font-weight: var(--fw-black);
  line-height: var(--lh-tight);
  margin-bottom: var(--space-6);
  animation: fadeInUp 0.6s ease 0.1s both;
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: var(--fs-3xl);
  }
  .hero {
    min-height: auto;
    padding: calc(72px + var(--space-10)) 0 var(--space-10);
  }
}

.hero h1 .highlight {
  background: var(--popular-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--fs-lg);
  color: var(--text-secondary);
  line-height: var(--lh-relaxed);
  margin-bottom: var(--space-8);
  animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  animation: fadeInUp 0.6s ease 0.3s both;
}

.hero-center .hero-actions {
  justify-content: center;
}

/* Hero decorative elements */
.hero-decoration {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.4;
  z-index: 1;
}

.hero-decoration-1 {
  width: 400px;
  height: 400px;
  background: var(--color-primary);
  top: -100px;
  right: -100px;
  opacity: 0.15;
}

.hero-decoration-2 {
  width: 300px;
  height: 300px;
  background: var(--color-secondary);
  bottom: -80px;
  left: 10%;
  opacity: 0.1;
}

.hero-decoration-3 {
  width: 200px;
  height: 200px;
  background: var(--color-accent);
  top: 30%;
  right: 20%;
  opacity: 0.1;
}

/* =========================================
   PAGE HERO (inner pages)
   ========================================= */
.page-hero {
  padding: calc(72px + var(--space-12)) 0 var(--space-12);
  background: var(--hero-gradient);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero h1 {
  font-size: var(--fs-4xl);
  margin-bottom: var(--space-4);
}

.page-hero p {
  font-size: var(--fs-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* =========================================
   CTA SECTION
   ========================================= */
.cta-section {
  background: var(--popular-gradient);
  padding: var(--space-16) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section h2 {
  font-size: var(--fs-3xl);
  color: #FFFFFF;
  margin-bottom: var(--space-4);
}

.cta-section p {
  font-size: var(--fs-lg);
  color: rgba(255, 255, 255, 0.85);
  max-width: 540px;
  margin: 0 auto var(--space-8);
}

.cta-section .cta-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* =========================================
   FOOTER
   ========================================= */
.site-footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-default);
  padding: var(--space-16) 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-10);
  padding-bottom: var(--space-12);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-brand {
  max-width: 300px;
}

.footer-brand .logo {
  margin-bottom: var(--space-4);
}

.footer-brand p {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: var(--lh-relaxed);
  margin-bottom: var(--space-5);
}

.footer-social {
  display: flex;
  gap: var(--space-3);
}

.footer-social a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--bg-muted);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  text-decoration: none;
  font-size: var(--fs-sm);
}

.footer-social a:hover {
  background: var(--color-primary);
  color: #FFFFFF;
  transform: translateY(-2px);
}

.footer-column h4 {
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: var(--ls-wider);
  color: var(--text-primary);
  margin-bottom: var(--space-5);
}

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

.footer-links li {
  margin-bottom: var(--space-3);
}

.footer-links a {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-default);
  padding: var(--space-5) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-bottom p {
  font-size: var(--fs-xs);
  color: var(--text-tertiary);
  margin: 0;
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-6);
}

.footer-bottom-links a {
  font-size: var(--fs-xs);
  color: var(--text-tertiary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-bottom-links a:hover {
  color: var(--color-primary);
}

/* =========================================
   MAIN CONTENT SPACER
   ========================================= */
.main-content {
  min-height: calc(100vh - 72px);
}

/* =========================================
   GRID LAYOUTS
   ========================================= */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
}

/* Split layout (50/50 or custom) */
.split-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}

@media (max-width: 768px) {
  .split-layout {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

/* =========================================
   AUTH LAYOUT (Split screen)
   ========================================= */
.auth-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 100vh;
}

@media (max-width: 768px) {
  .auth-layout {
    grid-template-columns: 1fr;
  }
}

.auth-form-side {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
}

.auth-form-container {
  width: 100%;
  max-width: 420px;
}

.auth-brand-side {
  background: var(--popular-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  position: relative;
  overflow: hidden;
}

@media (max-width: 768px) {
  .auth-brand-side {
    display: none;
  }
}

.auth-brand-content {
  text-align: center;
  color: #FFFFFF;
  position: relative;
  z-index: 2;
}

.auth-brand-content h2 {
  font-size: var(--fs-3xl);
  color: #FFFFFF;
  margin-bottom: var(--space-4);
}

.auth-brand-content p {
  font-size: var(--fs-md);
  color: rgba(255, 255, 255, 0.85);
  max-width: 360px;
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin: var(--space-6) 0;
  color: var(--text-tertiary);
  font-size: var(--fs-sm);
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-default);
}