/* --- Header & Navigation --- */
header {
  position: fixed;
  top: var(--space-4);
  left: 50%;
  transform: translateX(-50%);
  width: min(90%, var(--container));
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transition: all var(--duration-base);
}

header .header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-6);
}

.brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-lg);
  color: var(--color-text);
  line-height: 1.2;
  text-decoration: none;
  transition: color var(--duration-fast);
}

.brand:hover {
  color: var(--color-primary);
}

.main-nav {
  display: flex;
  gap: var(--space-8);
  align-items: center;
}

.burger {
  display: none;
}

.main-nav a {
  color: var(--color-text);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: var(--space-1) 0;
  position: relative;
  transition: color var(--duration-fast);
  text-decoration: none;
}

.main-nav a.active {
  color: var(--color-primary);
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--duration-base);
}

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

/* Dropdown Menu Fix */
.nav-more {
  position: relative;
}

.nav-more-button {
  background: transparent;
  border: none;
  color: var(--color-text);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: var(--space-1) var(--space-2);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--space-1);
  transition: color var(--duration-fast);
}

.nav-more-button::after {
  content: '';
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  margin-top: 2px;
}

.nav-more:hover .nav-more-button {
  color: var(--color-primary);
}

.nav-more-menu {
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 200px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--duration-base) var(--ease-out);
  z-index: 1000;
}

.nav-more:hover .nav-more-menu,
.nav-more:focus-within .nav-more-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-more-menu a {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  display: block;
  width: 100%;
  color: var(--color-text);
  text-decoration: none;
  transition: all var(--duration-fast);
  position: relative;
}

.nav-more-menu a:hover {
  color: var(--color-primary);
  transform: translateX(5px);
  background: transparent !important;
}

.nav-more-menu a::after {
  content: '';
  position: absolute;
  bottom: 8px;
  left: var(--space-4);
  width: 20px;
  height: 2px;
  background: var(--color-primary);
  opacity: 0;
  transition: all var(--duration-fast);
}

.nav-more-menu a:hover::after {
  opacity: 1;
  width: calc(100% - var(--space-8));
}

/* --- Mobile Menu Modal --- */
.mobile-menu {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 2000;
  display: none;
  flex-direction: column;
  padding: 0;
  opacity: 0;
  pointer-events: none;
  transition: all var(--duration-base) var(--ease-out);
}

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

.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.mobile-menu-close {
  background: var(--color-surface-2);
  border: none;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  cursor: pointer;
}

.mobile-menu-links {
  padding: var(--space-8) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  overflow-y: auto;
}

.mobile-menu-links a {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-text);
  text-decoration: none;
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-border);
  transition: color var(--duration-fast);
}

.mobile-menu-links a:hover, .mobile-menu-links a.active {
  color: var(--color-primary);
}

/* --- Footer (Light Theme) --- */
footer {
  padding: var(--space-24) 0 var(--space-12);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  color: var(--color-text);
  margin-top: var(--space-24);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr) 1.5fr;
  gap: var(--space-12);
  width: min(100%, var(--container));
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-links h3, .footer-contact h3 {
  color: var(--color-text);
  font-size: var(--text-base);
  font-weight: 800;
  margin-bottom: var(--space-4);
}

.footer-brand strong {
  display: block;
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
  color: var(--color-primary);
}

.footer-brand p, .footer-contact p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.6;
}

.footer-links a {
  color: var(--color-text-muted);
  transition: all var(--duration-fast);
  font-size: var(--text-sm);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
}

.footer-links a::before {
  content: '›';
  opacity: 0;
  transition: all var(--duration-fast);
  transform: translateX(-5px);
}

.footer-links a:hover {
  color: var(--color-primary);
  transform: translateX(5px);
}

.footer-links a:hover::before {
  opacity: 1;
  transform: translateX(0);
}

.footer-social {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.footer-social a {
  padding: var(--space-2) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all var(--duration-base);
  text-decoration: none;
}

.footer-social a:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

/* --- Forms --- */
.form {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.form-grid .full-width {
  grid-column: 1 / -1;
}

@media (max-width: 640px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}

label {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
input[type="password"],
input[type="datetime-local"],
textarea,
select {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: var(--text-base);
  font-family: var(--font-sans);
  transition: all var(--duration-fast);
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-accent-light);
  background: #fff;
}

textarea {
  min-height: 150px;
  resize: vertical;
}

.form button[type="submit"] {
  margin-top: var(--space-8);
  width: 100%;
}

.form-status {
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  font-weight: 600;
  text-align: center;
}

/* --- Alerts --- */
.alert {
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-md);
  font-weight: 500;
  margin-bottom: var(--space-6);
}

.alert.success {
  background: #ecfdf5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.alert.error {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }

  .footer-brand, .footer-contact {
    grid-column: 1 / -1;
  }

  header {
    top: 0;
    width: 100%;
    border-radius: 0;
    border-inline: none;
    border-top: none;
  }

  .main-nav { display: none; }
  .burger { 
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: transparent;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--color-text);
  }
  
  header .header-inner {
    padding: var(--space-2) var(--space-4);
  }
}