/**
 * ============================================
 * COOLLABS - COMPONENTS
 * ============================================
 * Buttons, Cards, Header, Footer, Forms
 * v2.0.0 - Corporate Premium Edition
 */

/* ==================== BUTTONS ==================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  line-height: 1;
  text-decoration: none;
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  cursor: pointer;
  border: var(--border-width-medium) solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: var(--gradient-primary-hover);
  box-shadow: var(--shadow-primary);
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

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

.btn-outline {
  background: transparent;
  color: white;
  border-color: white;
}

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

.btn-ghost {
  background: transparent;
  color: var(--color-primary);
}

.btn-ghost:hover {
  background: var(--color-primary-50);
}

.btn-lg {
  padding: var(--space-5) var(--space-10);
  font-size: var(--text-lg);
}

.btn-sm {
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
}

/* ==================== CARDS ==================== */

.card {
  background: var(--bg-primary);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  border: var(--border-width-thin) solid var(--border-color);
}

.card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.card-gradient {
  background: var(--gradient-card);
  backdrop-filter: var(--backdrop-blur);
}

.card-header {
  margin-bottom: var(--space-6);
}

.card-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-3);
}

.card-description {
  font-size: var(--text-base);
  color: var(--color-gray-600);
  line-height: var(--leading-relaxed);
}

.card-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-4);
  font-size: var(--text-3xl);
  color: white;
  box-shadow: var(--shadow-primary);
}

/* Card Hover Effect */
.card-hover-primary:hover {
  border-color: var(--color-primary);
}

.card-hover-primary:hover .card-icon {
  transform: scale(1.1) rotate(5deg);
}

/* ==================== HEADER & NAVIGATION ==================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background: var(--bg-primary);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.header.scrolled {
  box-shadow: var(--shadow-lg);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: var(--backdrop-blur);
}

[data-theme="dark"] .header.scrolled {
  background: rgba(31, 31, 31, 0.95);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  padding: 0 var(--space-8);
}

@media (max-width: 767px) {
  .header-container {
    height: var(--header-height-mobile);
    padding: 0 var(--space-4);
  }
}

.logo {
  font-size: var(--text-2xl);
  font-weight: var(--font-extrabold);
  font-family: var(--font-heading);
  color: var(--color-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  transition: transform var(--transition-base);
}

.logo:hover {
  transform: scale(1.05);
}

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

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
}

@media (max-width: 1023px) {
  .nav-menu {
    display: none;
  }
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--color-gray-700);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-primary);
  background: var(--color-primary-50);
}

.nav-link.active {
  color: var(--color-primary);
  font-weight: var(--font-semibold);
}

/* ==================== MEGA MENU ==================== */

.mega-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  min-width: 800px;
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-2xl);
  padding: var(--space-8);
  margin-top: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: var(--z-dropdown);
}

.nav-item:hover .mega-menu {
  opacity: 1;
  visibility: visible;
  margin-top: var(--space-2);
}

.mega-menu-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.mega-menu-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.mega-menu-item:hover {
  background: var(--color-primary-50);
}

.mega-menu-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  color: white;
  font-size: var(--text-lg);
  flex-shrink: 0;
}

.mega-menu-content h4 {
  font-size: var(--text-lg);
  color: var(--color-gray-900);
  margin-bottom: var(--space-2);
}

.mega-menu-content p {
  font-size: var(--text-sm);
  color: var(--color-gray-600);
  margin: 0;
}

/* ==================== MOBILE MENU ==================== */

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: var(--space-2);
  cursor: pointer;
  z-index: var(--z-fixed);
}

@media (max-width: 1023px) {
  .mobile-menu-toggle {
    display: flex;
  }
}

.mobile-menu-toggle span {
  width: 28px;
  height: 3px;
  background: var(--color-gray-900);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

.mobile-menu {
  position: fixed;
  top: var(--header-height-mobile);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-primary);
  padding: var(--space-8) var(--space-4);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  overflow-y: auto;
  z-index: var(--z-dropdown);
}

.mobile-menu.active {
  transform: translateX(0);
}

.mobile-menu-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.mobile-menu-link {
  display: block;
  padding: var(--space-4);
  font-size: var(--text-lg);
  font-weight: var(--font-medium);
  color: var(--color-gray-700);
  text-decoration: none;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.mobile-menu-link:hover {
  background: var(--color-primary-50);
  color: var(--color-primary);
}

/* ==================== FOOTER ==================== */

.footer {
  background: var(--bg-dark);
  color: var(--color-gray-300);
  padding: var(--space-24) 0 var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

@media (max-width: 1023px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
}

@media (max-width: 767px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-brand {
  margin-bottom: var(--space-6);
}

.footer-logo {
  font-size: var(--text-3xl);
  font-weight: var(--font-extrabold);
  font-family: var(--font-heading);
  color: white;
  margin-bottom: var(--space-4);
}

.footer-description {
  color: var(--color-gray-400);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
}

.footer-title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: white;
  margin-bottom: var(--space-6);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer-link {
  color: var(--color-gray-400);
  text-decoration: none;
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

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

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

.footer-social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-gray-800);
  color: var(--color-gray-400);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.footer-social-link:hover {
  background: var(--color-primary);
  color: white;
  transform: translateY(-2px);
}

.footer-bottom {
  border-top: var(--border-width-thin) solid var(--color-gray-800);
  padding-top: var(--space-8);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-copyright {
  color: var(--color-gray-500);
  font-size: var(--text-sm);
}

/* ==================== BACK TO TOP ==================== */

.back-to-top {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  color: white;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  box-shadow: var(--shadow-xl);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  z-index: var(--z-fixed);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-primary-lg);
}

/* ==================== THEME TOGGLE ==================== */

.theme-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-gray-100);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  font-size: var(--text-lg);
  color: var(--color-gray-700);
}

.theme-toggle:hover {
  background: var(--color-primary);
  color: white;
  transform: rotate(15deg);
}

[data-theme="dark"] .theme-toggle {
  background: var(--color-gray-800);
  color: var(--color-gray-300);
}