/* ============================================
   EBC - COMPONENTS & UI ELEMENTS
   Buttons, Cards, Forms, Navigation
   ============================================ */

/* ============================================
   BUTTONS - PREMIUM STYLING
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  font-size: 1rem;
  font-weight: 600;
  font-family: 'Poppins', sans-serif;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

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

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

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  background-color: var(--bg-gray);
  color: var(--text-dark);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background-color: var(--bg-light);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary-main);
  border: 2px solid var(--primary-main);
  padding: calc(var(--space-sm) - 2px) calc(var(--space-lg) - 2px);
}

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

.btn-success {
  background-color: var(--secondary-green);
  color: var(--bg-white);
}

.btn-success:hover {
  background-color: #059669;
  box-shadow: var(--shadow-lg);
}

.btn-sm {
  padding: calc(var(--space-xs) * 0.75) var(--space-md);
  font-size: 0.875rem;
}

.btn-lg {
  padding: var(--space-md) var(--space-2xl);
  font-size: 1.125rem;
}

.btn-block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ============================================
   CARDS - PREMIUM DESIGN
   ============================================ */

.card {
  background-color: var(--bg-white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-8px);
}

.card-header {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--bg-light);
}

.card-body {
  padding: var(--space-lg);
}

.card-footer {
  padding: var(--space-lg);
  border-top: 1px solid var(--bg-light);
  background-color: var(--bg-light);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--text-dark);
}

.card-text {
  color: var(--text-gray);
  line-height: 1.8;
}

.card-image {
  width: 100%;
  height: auto;
  object-fit: contain;
  display: block;
}

/* CARD SEGMENT (Educational Segments) */

.card-segment {
  background-color: var(--bg-white);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.card-segment:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-12px);
}

.card-segment-img-wrapper {
  width: 100%;
  height: 280px;
  min-height: 280px;
  background-color: var(--bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.card-segment img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

@media (max-width: 768px) {
  .card-segment-img-wrapper {
    height: auto;
    min-height: 200px;
  }

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

  .card-segment-content {
    padding: var(--space-md);
  }

  .card-diferencial img,
  .card-segment img {
    max-height: 320px;
  }
}

.card-segment-content {
  padding: var(--space-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-segment h3 {
  font-size: 1.5rem;
  color: var(--primary-main);
  margin-bottom: var(--space-md);
}

.card-segment p {
  color: var(--text-gray);
  font-size: 0.95rem;
  margin-bottom: var(--space-md);
  line-height: 1.8;
}

.card-segment .btn {
  margin-top: auto;
  align-self: flex-start;
}

/* CARD DIFFERENTIAL (Key Differentials) */

.card-diferencial {
  background-color: var(--bg-white);
  border-radius: 16px;
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  height: 100%;
  text-align: center;
  display: flex;
  flex-direction: column;
}

.card-diferencial:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-12px);
}

.card-diferencial img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 12px;
  margin-bottom: var(--space-lg);
  display: block;
}

.card-diferencial h3 {
  font-size: 1.25rem;
  color: var(--primary-main);
  margin-bottom: var(--space-md);
  font-weight: 600;
}

.card-diferencial p {
  color: var(--text-gray);
  font-size: 0.95rem;
  line-height: 1.8;
  text-align: left;
}

/* ============================================
   FORMS & INPUTS
   ============================================ */

.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--space-sm);
  font-weight: 500;
  color: var(--text-dark);
}

.form-label.required::after {
  content: ' *';
  color: #EF4444;
}

.form-control {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-size: 1rem;
  font-family: inherit;
  border: 2px solid var(--bg-gray);
  border-radius: 8px;
  transition: all var(--transition-base);
  background-color: var(--bg-white);
  color: var(--text-dark);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-main);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-control::placeholder {
  color: var(--text-light);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236B7280' d='M10.293 3.293L6 7.586 1.707 3.293A1 1 0 00.293 4.707l5 5a1 1 0 001.414 0l5-5a1 1 0 10-1.414-1.414z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-md) center;
  padding-right: var(--space-2xl);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-checkbox,
.form-radio {
  margin-right: var(--space-sm);
  cursor: pointer;
}

.form-error {
  color: #EF4444;
  font-size: 0.875rem;
  margin-top: var(--space-xs);
}

.form-success {
  color: var(--secondary-green);
  font-size: 0.875rem;
  margin-top: var(--space-xs);
}

/* ============================================
   NAVIGATION & NAVBAR
   ============================================ */

.navbar {
  background-color: var(--bg-white);
  padding: var(--space-md) 0;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar-brand {
  display: flex;
  align-items: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-dark);
}

.navbar-brand img {
  max-height: 60px;
  width: auto;
  margin-right: var(--space-md);
}

.navbar-nav {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
}

.nav-item {
  position: relative;
}

.nav-link {
  color: var(--text-dark);
  font-weight: 500;
  padding: var(--space-sm) 0;
  transition: color var(--transition-base);
  cursor: pointer;
}

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

.nav-link.active {
  color: var(--primary-main);
  border-bottom: 2px solid var(--primary-main);
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background-color: var(--bg-white);
  min-width: 200px;
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  padding: var(--space-md) 0;
  display: none;
  list-style: none;
  white-space: nowrap;
  z-index: 101;
}

.nav-item:hover .nav-dropdown {
  display: block;
}

.nav-dropdown li a {
  display: block;
  padding: var(--space-sm) var(--space-lg);
  color: var(--text-dark);
  transition: all var(--transition-base);
}

.nav-dropdown li a:hover {
  background-color: var(--bg-light);
  color: var(--primary-main);
}

.navbar-toggler {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.navbar-toggler span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--text-dark);
  margin: 5px 0;
  transition: all var(--transition-base);
}

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

.footer {
  background-color: var(--text-dark);
  color: var(--bg-light);
  padding: var(--space-3xl) 0 var(--space-lg);
  margin-top: var(--space-3xl);
}

.footer-section {
  margin-bottom: var(--space-2xl);
}

.footer-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--bg-white);
}

.footer-text {
  font-size: 0.95rem;
  color: var(--bg-light);
  line-height: 1.8;
}

.footer-links {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: var(--bg-light);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-lg);
  margin-top: var(--space-lg);
  text-align: center;
  color: var(--bg-light);
  font-size: 0.875rem;
}

/* ============================================
   WHATSAPP FLOAT BUTTON
   ============================================ */

.whatsapp-float {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 60px;
  height: 60px;
  background: #25D366;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
  transition: all 0.3s ease;
  z-index: 1000;
  text-decoration: none;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
}

.whatsapp-float .whatsapp-text {
  display: none;
}

@media (max-width: 768px) {
  .whatsapp-float {
    width: 56px;
    height: 56px;
    font-size: 20px;
  }
}

/* ============================================
   RESPONSIVE COMPONENTS
   ============================================ */

@media (max-width: 768px) {
  .navbar-nav {
    flex-direction: column;
    gap: var(--space-md);
  }

  .navbar-toggler {
    display: block;
  }

  .nav-dropdown {
    position: static;
    display: none;
    box-shadow: none;
    padding-left: var(--space-lg);
    margin-top: var(--space-sm);
  }

  .nav-item:hover .nav-dropdown {
    display: block;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .card-segment img,
  .card-diferencial img {
    height: auto;
    max-height: none;
  }

  .footer {
    padding: var(--space-2xl) 0 var(--space-lg);
  }
}

@media (max-width: 480px) {
  .btn {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.95rem;
  }

  .btn-lg {
    padding: var(--space-md) var(--space-lg);
  }

  .form-control {
    font-size: 16px;
  }

  .card {
    border-radius: 8px;
  }

  .card-segment,
  .card-diferencial {
    border-radius: 12px;
  }
}