/* ==========================================================================
   components.css — Reusable UI Components
   Lead lea Corporate Site Redesign
   ========================================================================== */

/* ==========================================================================
   Focus Indicator (Global)
   ========================================================================== */

:focus-visible {
  outline: 2px solid var(--color-accent-cyan);
  outline-offset: 2px;
}

/* For elements where outline doesn't work well, use box-shadow */
.glass-card:focus-visible,
.btn-cta:focus-visible,
.faq-question:focus-visible,
.nav-link:focus-visible {
  outline: none;
  box-shadow: var(--glow-cyan);
}

/* ==========================================================================
   Glassmorphism Card
   ========================================================================== */

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 2rem;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.glass-card:hover {
  border-color: rgba(0, 212, 255, 0.3);
  box-shadow: var(--glow-cyan);
  transform: translateY(-4px);
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: transparent;
  transition:
    background var(--transition-medium),
    height var(--transition-medium),
    backdrop-filter var(--transition-medium);
}

.site-header.scrolled {
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
  height: 80px;
  transition: height var(--transition-medium);
}

.site-header.scrolled .site-nav {
  height: 60px;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: 0.02em;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  position: relative;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  padding: 0.25rem 0;
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-accent-cyan);
  box-shadow: var(--glow-cyan);
  border-radius: 1px;
}

.nav-line-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.2rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
  background: #06c755;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: opacity var(--transition-fast);
}

.nav-line-btn:hover {
  opacity: 0.85;
}

/* ==========================================================================
   Mobile Navigation
   ========================================================================== */

.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1010;
  touch-action: manipulation;
}

.nav-hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition:
    transform var(--transition-fast),
    opacity var(--transition-fast);
}

.nav-hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.nav-hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-overlay {
  position: fixed;
  inset: 0;
  z-index: 1005;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--transition-medium),
    visibility var(--transition-medium);
}

.mobile-overlay.open {
  opacity: 1;
  visibility: visible;
}

.mobile-overlay .nav-link {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.mobile-overlay .nav-line-btn {
  font-size: 1rem;
  padding: 0.75rem 2rem;
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }

  .nav-hamburger {
    display: flex;
  }
}

/* ==========================================================================
   CTA Button
   ========================================================================== */

.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 2.5rem;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: var(--gradient-accent);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  box-shadow: var(--glow-accent);
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
}

.btn-cta:hover {
  transform: scale(1.05);
  box-shadow:
    0 0 40px rgba(0, 212, 255, 0.35),
    0 0 80px rgba(139, 92, 246, 0.2);
}

.btn-cta:active {
  transform: scale(0.98);
}

/* ==========================================================================
   Form Styles
   ========================================================================== */

.form-group {
  position: relative;
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  font-size: 1rem;
  color: var(--color-text-primary);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent-cyan);
  box-shadow: var(--glow-cyan);
}

.form-textarea {
  min-height: 140px;
  resize: vertical;
}

/* Validation error */
.form-input.error,
.form-textarea.error {
  border-color: var(--color-accent-magenta);
  box-shadow: 0 0 12px rgba(255, 0, 170, 0.2);
}

.form-error {
  display: none;
  margin-top: 0.4rem;
  font-size: 0.8rem;
  color: var(--color-accent-magenta);
}

.form-input.error ~ .form-error,
.form-textarea.error ~ .form-error {
  display: block;
}

/* Form messages */
.form-message {
  padding: 1rem;
  border-radius: 10px;
  font-size: 0.9rem;
  text-align: center;
  display: none;
}

.form-message.success {
  display: block;
  color: #34d399;
  background: rgba(52, 211, 153, 0.1);
  border: 1px solid rgba(52, 211, 153, 0.2);
}

.form-message.error {
  display: block;
  color: var(--color-accent-magenta);
  background: rgba(255, 0, 170, 0.08);
  border: 1px solid rgba(255, 0, 170, 0.2);
}

/* Loading state */
.btn-cta.loading {
  pointer-events: none;
  opacity: 0.7;
  position: relative;
}

.btn-cta.loading::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: btn-spin 0.6s linear infinite;
}

@keyframes btn-spin {
  to {
    transform: rotate(360deg);
  }
}

/* ==========================================================================
   FAQ Accordion
   ========================================================================== */

.faq-item {
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  background: var(--glass-bg);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item + .faq-item {
  margin-top: 1rem;
}

.faq-item:hover {
  border-color: rgba(255, 255, 255, 0.15);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 1.25rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-primary);
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.faq-question:hover {
  color: var(--color-accent-cyan);
}

.faq-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-left: 1rem;
  color: var(--color-text-muted);
  transition: transform var(--transition-fast);
}

.faq-item.expanded .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition:
    max-height var(--transition-medium),
    opacity var(--transition-medium),
    padding var(--transition-medium);
}

.faq-item.expanded .faq-answer {
  max-height: 500px;
  opacity: 1;
  padding: 0 1.5rem 1.25rem;
}

.faq-answer p {
  color: var(--color-text-secondary);
  line-height: 1.8;
}