/* Layout Components: Navigation, Headers, Grid Sections, Footer */

/* 1. Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color var(--transition-normal), border-color var(--transition-normal), backdrop-filter var(--transition-normal), box-shadow var(--transition-normal), padding var(--transition-normal);
  padding: var(--space-md) 0;
}

.header.scrolled {
  background-color: var(--bg-navbar);
  border-bottom: 1px solid var(--border-light);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--nav-shadow);
  padding: var(--space-sm) 0;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo Styling */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: var(--text-lg);
  letter-spacing: -0.03em;
  background: var(--grad-cyan-purple);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  z-index: 101;
}

.logo-icon {
  width: 30px;
  height: 30px;
  background: #ffffff url('../assets/images/logo.png') center / contain no-repeat;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.35);
}

/* Nav Menu */
.nav-menu {
  display: none;
}

@media (min-width: 1024px) {
  .nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
  }

  .nav-link {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: var(--space-xs) 0;
  }

  .nav-link:hover, .nav-link.active {
    color: var(--text-primary);
  }

  .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--grad-cyan-purple);
    border-radius: var(--radius-full);
    transition: width var(--transition-normal);
  }

  .nav-link:hover::after, .nav-link.active::after {
    width: 100%;
  }
}

/* Utility buttons in Navbar */
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  z-index: 101;
}

/* Burger Menu Button */
.burger-menu-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--card-bg);
  border: 1px solid var(--border-medium);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
  z-index: 102;
}

@media (min-width: 1024px) {
  .burger-menu-btn {
    display: none;
  }
}

.burger-line {
  width: 20px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: var(--radius-full);
  transition: transform var(--transition-normal), opacity var(--transition-normal), background-color var(--transition-normal);
}

.burger-menu-btn.open .burger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.burger-menu-btn.open .burger-line:nth-child(2) {
  opacity: 0;
}

.burger-menu-btn.open .burger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Sidebar Menu */
.mobile-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  max-width: 400px;
  height: 100vh;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border-medium);
  z-index: 99;
  display: flex;
  flex-direction: column;
  padding: 100px var(--space-lg) var(--space-xl) var(--space-lg);
  gap: var(--space-md);
  box-shadow: -10px 0 40px rgba(0, 0, 0, 0.15);
  visibility: hidden; /* keep off-screen links out of the tab order */
  transition: right var(--transition-slow), visibility 0s var(--transition-slow);
}

.mobile-nav.open {
  right: 0;
  visibility: visible;
  transition: right var(--transition-slow), visibility 0s;
}

.mobile-nav-link {
  font-size: var(--text-lg);
  font-family: var(--font-heading);
  font-weight: 600;
  padding: var(--space-xs) 0;
  border-bottom: 1px solid var(--border-light);
}

.mobile-nav-link:hover, .mobile-nav-link.active {
  color: var(--accent-cyan);
}

.mobile-nav-cta {
  margin-top: auto;
}

/* 2. Hero Layout */
.hero-wrapper {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: center;
  padding-top: var(--space-xxl);
}

@media (min-width: 1024px) {
  .hero-wrapper {
    grid-template-columns: 1.1fr 0.9fr;
    gap: var(--space-xxl);
    padding-top: var(--space-xxl);
  }
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: var(--card-bg);
  border: 1px solid var(--border-medium);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: var(--space-md);
  box-shadow: 0 2px 10px rgba(59, 91, 219, 0.05);
}

.hero-tag span {
  width: 6px;
  height: 6px;
  background-color: var(--accent-cyan);
  border-radius: var(--radius-full);
  animation: pulse-glow 1.5s infinite;
}

.hero-title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-title span {
  background: var(--grad-cyan-purple);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: var(--text-md);
  margin-bottom: var(--space-lg);
  max-width: 540px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.hero-media {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-shape-bg {
  position: absolute;
  width: 100%;
  height: 100%;
  /* Pre-softened radial gradient instead of filter: blur(40px) — the live blur
     forced an expensive full-size layer to be re-composited every frame */
  background: radial-gradient(ellipse 70% 70% at 50% 50%, rgba(59, 91, 219, 0.08) 0%, rgba(95, 61, 196, 0.05) 55%, transparent 80%);
  z-index: -1;
  animation: float-slow 8s ease-in-out infinite alternate;
  will-change: transform;
}

/* 3. Section Header & Columns */
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto var(--space-xl) auto;
}

@media (min-width: 1024px) {
  .section-header {
    margin-bottom: var(--space-xxl);
  }
}

.section-tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-cyan);
  margin-bottom: var(--space-xs);
}

.section-title {
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.section-desc {
  font-size: var(--text-sm);
}

/* Responsive grid templates */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

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

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

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

@media (min-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

@media (min-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
  }
}

/* 4. Footer Section */
.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-light);
  padding: var(--space-xl) 0 var(--space-lg) 0;
  position: relative;
  overflow: hidden;
}

@media (min-width: 1024px) {
  .footer {
    padding-top: var(--space-xxl);
  }
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

@media (min-width: 768px) {
  .footer-top {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-top {
    grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
  }
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: var(--text-lg);
  background: var(--grad-cyan-purple);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  width: fit-content;
}

.footer-logo .logo-icon {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  scale: 0.85;
}

.footer-desc {
  font-size: var(--text-sm);
  max-width: 280px;
}

.footer-newsletter .footer-desc {
  font-size: var(--text-xs);
  margin-bottom: var(--space-xs);
}

.footer-links-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.footer-title {
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer-link {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.footer-link:hover {
  color: var(--accent-cyan);
  transform: translateX(3px);
}

/* Plain-text footer entries (not links) keep the default cursor */
span.footer-link {
  cursor: default;
}

.footer-legal-links .footer-link {
  font-size: var(--text-xs);
}

.footer-newsletter {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.newsletter-form {
  position: relative;
  display: flex;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-medium);
  background: var(--input-bg);
  padding: 4px;
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.newsletter-form:focus-within {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(59, 91, 219, 0.12);
}

.newsletter-input {
  flex-grow: 1;
  padding: 10px 14px;
  font-size: var(--text-sm);
  background: transparent;
}

.newsletter-input::placeholder {
  color: var(--text-tertiary);
}

.newsletter-btn {
  background: var(--grad-cyan-purple);
  color: #ffffff;
  border-radius: var(--radius-sm);
  padding: 0 16px;
  font-size: var(--text-sm);
  font-weight: 600;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.newsletter-btn:hover {
  opacity: 0.9;
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-light);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.footer-socials {
  display: grid;
  grid-template-columns: 32px auto;
  align-items: center;
  justify-content: start;
  column-gap: var(--space-sm);
  row-gap: var(--space-xs);
}

.social-label {
  font-size: var(--text-sm);
  font-weight: 600;
}

.social-icon-link {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--card-bg);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}

.social-icon-link:hover {
  transform: translateY(-2px);
  color: #ffffff;
  background: var(--grad-cyan-purple);
  border-color: transparent;
}

.social-icon-link svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

/* Pulse animation keyframe */
@keyframes pulse-glow {
  0%, 100% {
    opacity: 0.4;
    transform: scale(0.9);
  }
  50% {
    opacity: 1;
    transform: scale(1.1);
  }
}
@keyframes float-slow {
  0% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-15px) rotate(3deg); }
  100% { transform: translateY(0px) rotate(0deg); }
}