/* ===== NAVIGATION ===== */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(232, 240, 237, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: transform var(--transition-base);
}

.site-nav.hidden {
  transform: translateY(-100%);
}

.nav-inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: 0.05em;
  color: rgba(0, 0, 0, 0.9);
}

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

.nav-links a {
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
  padding: var(--space-sm) 0;
}

.nav-links a:hover,
.nav-links a.active {
  color: rgba(0, 0, 0, 0.9);
}

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

.nav-dropdown-toggle {
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
  padding: var(--space-sm) 0;
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-dropdown-toggle:hover {
  color: rgba(0, 0, 0, 0.9);
}

.nav-dropdown-toggle svg {
  width: 12px;
  height: 12px;
  transition: transform var(--transition-fast);
}

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

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) 0;
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
  box-shadow: var(--shadow-lg);
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
}

.nav-dropdown-menu a {
  display: block;
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.nav-dropdown-menu a:hover {
  background: var(--color-bg-hover);
  color: rgba(0, 0, 0, 0.9);
}

/* Mobile Menu Toggle */
.nav-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
}

.nav-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: rgba(0, 0, 0, 0.8);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-menu-btn.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.nav-menu-btn.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== MOBILE NAV ===== */
@media (max-width: 900px) {
  .nav-menu-btn {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    height: calc(100vh - 70px);
    height: calc(100dvh - 70px);
    background: #e8f0ed;
    background: var(--color-bg);
    flex-direction: column;
    justify-content: flex-start;
    padding: var(--space-2xl) var(--space-xl);
    gap: var(--space-md);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    z-index: 999;
    overflow-y: auto;
  }

  .nav-links.open {
    transform: translateX(0);
  }

  /* Make navbar fully opaque when menu is open */
  .site-nav:has(.nav-links.open) {
    background: #e8f0ed;
  }

  .nav-links a {
    font-size: var(--text-lg);
  }

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

  .nav-dropdown-toggle svg {
    display: none;
  }
}

/* ===== FOOTER ===== */
.site-footer {
  border-top: none;
  padding: var(--space-3xl) var(--space-xl);
  text-align: center;
  background: var(--color-accent);
}

.footer-socials {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.footer-socials a {
  color: rgba(0, 0, 0, 0.7);
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.footer-socials a:hover {
  color: rgba(0, 0, 0, 1);
  transform: translateY(-2px);
}

.footer-socials svg {
  width: 22px;
  height: 22px;
}

.footer-copyright {
  font-size: var(--text-sm);
  color: var(--color-text-dim);
  letter-spacing: 0.05em;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  font-size: var(--text-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.btn-primary {
  background: var(--color-white);
  color: var(--color-black);
}

.btn-primary:hover {
  background: var(--color-text);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  border: 1px solid var(--color-border-light);
  color: var(--color-text);
}

.btn-outline:hover {
  border-color: var(--color-white);
  color: var(--color-white);
  transform: translateY(-1px);
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-black);
}

.btn-accent:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* ===== SECTIONS ===== */
.section {
  padding: var(--space-4xl) var(--space-xl);
}

.section-narrow {
  max-width: var(--max-width-narrow);
  margin: 0 auto;
}

.section-wide {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  text-align: center;
  margin-bottom: var(--space-3xl);
  color: var(--color-white);
  letter-spacing: 0.03em;
}

.section-divider {
  width: 60px;
  height: 1px;
  background: var(--color-border-light);
  margin: -2rem auto var(--space-2xl);
}

/* ===== CONTAINER ===== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

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

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

.video-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
}

.video-card .video-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
}

.video-card .video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.video-card-title {
  padding: var(--space-md) var(--space-lg);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  text-align: center;
}

/* ===== MAILING LIST ===== */
.mailing-section {
  background: transparent;
  text-align: center;
}

.mailing-section h2 {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-style: italic;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.mailing-section p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-xl);
  font-size: var(--text-base);
}

.mailing-form {
  display: flex;
  gap: var(--space-md);
  max-width: 480px;
  margin: 0 auto;
}

.mailing-form input[type="email"] {
  flex: 1;
  padding: 14px 18px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: var(--text-base);
  transition: border-color var(--transition-fast);
}

.mailing-form input[type="email"]::placeholder {
  color: var(--color-text-dim);
}

.mailing-form input[type="email"]:focus {
  border-color: var(--color-accent);
}

.mailing-privacy {
  font-size: var(--text-xs);
  color: var(--color-text-dim);
  margin-top: var(--space-md);
}

@media (max-width: 500px) {
  .mailing-form {
    flex-direction: column;
  }
}

/* ===== FADE IN ANIMATIONS ===== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}