/* ============================================
   TOS Network - Component Styles
   All major component styling
   ============================================ */

/* ============ Navigation Bar ============ */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--navbar-height);
  background: rgba(7, 2, 15, 0.8);
  backdrop-filter: blur(var(--blur-lg));
  border-bottom: 1px solid var(--border-primary);
  z-index: var(--z-sticky);
  transition: all var(--transition-base);
}

.navbar-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--navbar-height);
}

/* Logo */
.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  z-index: 2;
}

.logo-img {
  width: 48px;
  height: 48px;
  display: block;
  filter: drop-shadow(0 2px 8px rgba(245, 185, 66, 0.3));
  transition: all var(--transition-base);
}

.logo-img:hover {
  filter: drop-shadow(0 4px 16px rgba(245, 185, 66, 0.6));
  transform: translateY(-1px);
}

.logo-text {
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  white-space: nowrap;
}

/* Desktop Menu */
.navbar-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  list-style: none;
  margin: 0;
  padding: 0;
  height: 100%;
}

.navbar-item {
  position: relative;
  display: flex;
  align-items: center;
  margin: 0;
  height: 100%;
}

.navbar-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) 0;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: var(--letter-spacing-wide);
  transition: color var(--transition-fast);
  line-height: 1;
}

.navbar-link:hover {
  color: var(--primary-blue-light);
}

/* Navigation Icons */
.nav-icon {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.navbar-link:hover .nav-icon {
  opacity: 1;
}

/* Dropdown Menu */
.has-dropdown {
  position: relative;
  display: flex;
  align-items: center;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 12px);
  left: 0;
  min-width: 200px;
  padding: var(--spacing-sm);
  background: rgba(26, 31, 46, 0.95);
  backdrop-filter: blur(var(--blur-xl));
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-fast);
  z-index: var(--z-dropdown);
}

.has-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu li {
  margin: 0;
}

.dropdown-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.dropdown-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

/* Dropdown Icons */
.dropdown-icon {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  opacity: 0.6;
  transition: all var(--transition-fast);
}

.dropdown-link:hover .dropdown-icon {
  opacity: 1;
  color: var(--primary-blue-light);
}

/* Language Selector - Modern Dropdown Style */
.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.language-selector {
  position: relative;
  z-index: 100;
}

.language-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-sm);
  min-width: 110px;
  height: 40px;
  padding: 0 var(--spacing-md);
  background: transparent;
  border: 1px solid var(--border-primary);
  border-radius: 4px;
  color: var(--text-primary);
  font-size: 15px;
  font-weight: var(--font-weight-normal);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.language-btn:hover {
  border-color: var(--primary-blue);
}

.language-btn[aria-expanded="true"] {
  border-color: var(--primary-blue);
}

.language-label {
  flex: 1;
  text-align: left;
  font-weight: var(--font-weight-normal);
  color: var(--text-secondary);
}

.dropdown-arrow {
  width: 12px;
  height: 12px;
  opacity: 0.6;
  transition: transform var(--transition-base), opacity var(--transition-fast);
  flex-shrink: 0;
}

.language-btn:hover .dropdown-arrow {
  opacity: 1;
}

.language-btn[aria-expanded="true"] .dropdown-arrow {
  transform: rotate(180deg);
}

/* Backdrop */
.language-backdrop {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: transparent;
  z-index: var(--z-dropdown);
}

.language-backdrop.active {
  display: block;
}

/* Dropdown */
.language-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 160px;
  max-height: 70vh;
  overflow-y: auto;
  padding: var(--spacing-xs) 0;
  background: rgba(13, 29, 41, 0.98);
  backdrop-filter: blur(var(--blur-xl));
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: calc(var(--z-dropdown) + 1);
}

.language-dropdown.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Language Options */
.language-option {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 15px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.language-option:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.language-option .flag {
  font-size: 18px;
  line-height: 1;
  flex-shrink: 0;
}

.language-option .lang-name {
  flex: 1;
  text-align: left;
}

.language-option.active {
  background: rgba(74, 144, 226, 0.15);
  color: var(--text-primary);
  font-weight: var(--font-weight-medium);
}

/* Scrollbar for dropdown */
.language-dropdown::-webkit-scrollbar {
  width: 6px;
}

.language-dropdown::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 3px;
}

.language-dropdown::-webkit-scrollbar-thumb {
  background: rgba(74, 144, 226, 0.3);
  border-radius: 3px;
}

.language-dropdown::-webkit-scrollbar-thumb:hover {
  background: rgba(74, 144, 226, 0.5);
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}

.hamburger {
  position: relative;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-fast);
}

.hamburger::before {
  top: -8px;
}

.hamburger::after {
  bottom: -8px;
}

.mobile-toggle[aria-expanded="true"] .hamburger {
  background: transparent;
}

.mobile-toggle[aria-expanded="true"] .hamburger::before {
  top: 0;
  transform: rotate(45deg);
}

.mobile-toggle[aria-expanded="true"] .hamburger::after {
  bottom: 0;
  transform: rotate(-45deg);
}

/* ============ Hero Section ============ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--navbar-height) + var(--spacing-4xl)) var(--container-padding) var(--spacing-4xl);
  overflow: hidden;
  z-index: 1;
}

.hero-content {
  position: relative;
  max-width: 900px;
  text-align: center;
  z-index: 1;
}

.hero-title {
  font-size: var(--font-size-6xl);
  font-weight: var(--font-weight-extrabold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-2xl);
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

/* ============ Features Section ============ */

.features {
  position: relative;
  padding: var(--section-spacing-y) 0;
  z-index: 1;
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--spacing-4xl);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-extrabold);
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--text-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-xl);
}

/* Feature Cards */
.feature-card {
  position: relative;
  padding: var(--spacing-xl);
  background: var(--card-gradient);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(10px);
  transition: all var(--transition-base);
  overflow: hidden;
}

.feature-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-2xl), var(--glow-primary);
}

.card-icon {
  width: 64px;
  height: 64px;
  margin-bottom: var(--spacing-lg);
}

.card-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.card-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.card-description {
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--text-secondary);
}

/* ============ Documentation Section ============ */

.docs-section,
.whitepaper-section {
  position: relative;
  padding: var(--section-spacing-y) 0;
  z-index: 1;
}

.docs-card,
.whitepaper-card {
  padding: var(--spacing-3xl);
  background: var(--card-gradient);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-2xl);
  backdrop-filter: blur(10px);
  transition: all var(--transition-base);
}

.docs-card:hover,
.whitepaper-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-xl), var(--glow-sm);
}

.docs-title,
.whitepaper-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.docs-description,
.whitepaper-description {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
}

.docs-links,
.whitepaper-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.docs-link,
.whitepaper-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.docs-link:hover,
.whitepaper-link:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--border-hover);
  transform: translateX(4px);
}

.docs-link-all,
.whitepaper-link-primary {
  background: var(--btn-gradient-primary);
  border-color: var(--primary-blue);
  font-weight: var(--font-weight-semibold);
}

.docs-link-all:hover,
.whitepaper-link-primary:hover {
  box-shadow: 0 4px 12px var(--primary-blue-glow);
}

/* ============ FAQ Section ============ */

.faq-section {
  position: relative;
  padding: var(--section-spacing-y) 0;
  z-index: 1;
}

.faq-accordion {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.faq-item {
  background: var(--card-gradient);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(10px);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.faq-item:hover {
  border-color: var(--border-hover);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  padding: var(--spacing-lg) var(--spacing-xl);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  text-align: left;
  background: transparent;
  border: none;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.faq-question:hover {
  color: var(--primary-blue-light);
}

.faq-question span {
  flex: 1;
}

.faq-icon {
  flex-shrink: 0;
  color: var(--primary-blue);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base) var(--ease-in-out);
}

.faq-answer-content {
  padding: 0 var(--spacing-xl) var(--spacing-xl);
}

.faq-answer p {
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

.faq-answer ul {
  margin: var(--spacing-md) 0;
  padding-left: var(--spacing-lg);
}

.faq-answer li {
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

.faq-subsection {
  margin-bottom: var(--spacing-lg);
}

.faq-subsection:last-child {
  margin-bottom: 0;
}

.faq-subsection h4 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.faq-footer {
  text-align: center;
  margin-top: var(--spacing-4xl);
}

.faq-footer p {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

/* ============ Footer ============ */

.footer {
  position: relative;
  padding: var(--spacing-4xl) 0 var(--spacing-2xl);
  border-top: 1px solid var(--border-primary);
  background: rgba(7, 2, 15, 0.6);
  z-index: 1;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
}

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

.footer-heading {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

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

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

.footer-social {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.footer-bottom {
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--border-secondary);
  text-align: center;
  margin-top: var(--spacing-2xl);
}

.footer-bottom-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.secure-badge {
  height: 80px;
  width: auto;
  flex-shrink: 0;
  opacity: 0.9;
  transition: all var(--transition-base);
}

.secure-badge:hover {
  opacity: 1;
  transform: translateY(-2px);
}

/* Floating copyright section with gradient border */
.footer-copyright {
  position: relative;
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  background: rgba(7, 2, 15, 0.8);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  transition: all var(--transition-base);
  overflow: hidden;
}

/* Gradient border effect */
.footer-copyright::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 1px;
  border-radius: inherit;
  background: linear-gradient(
    135deg,
    rgba(3, 202, 155, 0.6) 0%,
    rgba(74, 144, 226, 0.6) 33%,
    rgba(228, 75, 68, 0.6) 66%,
    rgba(3, 202, 155, 0.6) 100%
  );
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  animation: borderGradientRotate 3s linear infinite;
}

/* Gradient animation */
@keyframes borderGradientRotate {
  0% {
    background: linear-gradient(
      135deg,
      rgba(3, 202, 155, 0.6) 0%,
      rgba(74, 144, 226, 0.6) 33%,
      rgba(228, 75, 68, 0.6) 66%,
      rgba(3, 202, 155, 0.6) 100%
    );
  }
  33% {
    background: linear-gradient(
      135deg,
      rgba(228, 75, 68, 0.6) 0%,
      rgba(3, 202, 155, 0.6) 33%,
      rgba(74, 144, 226, 0.6) 66%,
      rgba(228, 75, 68, 0.6) 100%
    );
  }
  66% {
    background: linear-gradient(
      135deg,
      rgba(74, 144, 226, 0.6) 0%,
      rgba(228, 75, 68, 0.6) 33%,
      rgba(3, 202, 155, 0.6) 66%,
      rgba(74, 144, 226, 0.6) 100%
    );
  }
  100% {
    background: linear-gradient(
      135deg,
      rgba(3, 202, 155, 0.6) 0%,
      rgba(74, 144, 226, 0.6) 33%,
      rgba(228, 75, 68, 0.6) 66%,
      rgba(3, 202, 155, 0.6) 100%
    );
  }
}

.footer-copyright:hover {
  background: rgba(7, 2, 15, 0.9);
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(0, 0, 0, 0.4);
}

.footer-copyright:hover::before {
  background: linear-gradient(
    135deg,
    rgba(3, 202, 155, 0.8) 0%,
    rgba(74, 144, 226, 0.8) 33%,
    rgba(228, 75, 68, 0.8) 66%,
    rgba(3, 202, 155, 0.8) 100%
  );
  animation: borderGradientRotate 2s linear infinite;
}

/* ============ Utility Components ============ */

/* Loading States */
.loading {
  opacity: 0.6;
  pointer-events: none;
  cursor: wait;
}

/* Disabled State */
.disabled {
  opacity: 0.5;
  pointer-events: none;
  cursor: not-allowed;
}

/* Success State */
.success {
  color: var(--accent-green);
}

/* Error State */
.error {
  color: var(--accent-red);
}

/* ============ Section Backgrounds ============ */

.section-with-bg {
  position: relative;
}

.section-with-bg::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
    ellipse at center,
    rgba(74, 144, 226, 0.05) 0%,
    transparent 70%
  );
  pointer-events: none;
}
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