/* ============================================
   COMPONENTS CSS - Buttons, Cards, Forms
   ============================================ */

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  white-space: nowrap;
}

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

.btn-gradient:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(255, 0, 153, 0.5);
  color: var(--text-primary);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--brand-pink);
  color: var(--brand-pink);
}

.btn-outline:hover {
  background: var(--brand-pink);
  color: var(--text-primary);
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1.125rem;
}

.btn-sm {
  padding: 0.5rem 1.5rem;
  font-size: 0.875rem;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ============================================
   Cards
   ============================================ */

.card {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  transition: all var(--transition-normal);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(255, 0, 153, 0.3);
}

.card-dark {
  background: var(--bg-primary);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.card-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.card-description {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--brand-pink);
  font-weight: 600;
  transition: gap var(--transition-fast);
}

.card-link:hover {
  gap: 0.75rem;
}

/* ============================================
   Forms
   ============================================ */

.form-group {
  margin-bottom: var(--spacing-md);
}

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

.form-label .required {
  color: var(--brand-pink);
}

.form-control {
  width: 100%;
  padding: 0.875rem 1.25rem;
  font-size: 1rem;
  font-family: var(--font-primary);
  color: var(--text-primary);
  background: var(--bg-tertiary);
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--brand-pink);
  background: var(--bg-secondary);
}

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

.form-control.is-invalid {
  border-color: #dc3545;
}

.form-control.is-valid {
  border-color: #28a745;
}

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

.invalid-feedback {
  display: none;
  color: #dc3545;
  font-size: 0.875rem;
  margin-top: 0.5rem;
}

.form-control.is-invalid ~ .invalid-feedback {
  display: block;
}

.valid-feedback {
  display: none;
  color: #28a745;
  font-size: 0.875rem;
  margin-top: 0.5rem;
}

.form-control.is-valid ~ .valid-feedback {
  display: block;
}

.char-counter {
  text-align: right;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* ============================================
   File Upload
   ============================================ */

.file-upload-wrapper {
  position: relative;
  overflow: hidden;
  display: inline-block;
  width: 100%;
}

.file-upload-input {
  position: absolute;
  left: -9999px;
}

.file-upload-label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 2rem;
  background: var(--bg-tertiary);
  border: 2px dashed var(--text-muted);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}

.file-upload-label:hover {
  border-color: var(--brand-pink);
  background: var(--bg-secondary);
}

.file-upload-label i {
  font-size: 2rem;
  color: var(--brand-pink);
}

.file-preview {
  margin-top: 1rem;
  display: none;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
}

.file-preview.active {
  display: flex;
}

.file-preview img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.file-preview-info {
  flex: 1;
}

.file-preview-name {
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.file-preview-size {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.file-remove-btn {
  background: transparent;
  border: none;
  color: var(--brand-pink);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
  transition: color var(--transition-fast);
}

.file-remove-btn:hover {
  color: #ff3366;
}

/* ============================================
   Checkbox
   ============================================ */

.form-check {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: var(--spacing-md);
}

.form-check-input {
  width: 20px;
  height: 20px;
  margin-top: 0.125rem;
  border: 2px solid var(--text-muted);
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.form-check-input:checked {
  background: var(--brand-pink);
  border-color: var(--brand-pink);
}

.form-check-label {
  cursor: pointer;
  color: var(--text-secondary);
  line-height: 1.5;
}

.form-check-label a {
  color: var(--brand-pink);
  text-decoration: underline;
}

/* ============================================
   Navbar
   ============================================ */

.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15, 15, 16, 0.95);
  backdrop-filter: blur(10px);
  padding: 1rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
}

.navbar-nav {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

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

.navbar-toggler {
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  display: none;
}

@media (max-width: 991px) {
  .navbar-toggler {
    display: block;
  }

  .navbar-collapse {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-secondary);
    padding: 2rem;
    transition: right var(--transition-normal);
    z-index: 1000;
    box-shadow: var(--shadow-lg);
  }

  .navbar-collapse.show {
    right: 0;
  }

  .navbar-nav {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
  }

  .nav-link {
    padding: 0.875rem 1rem;
  }
}

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

.footer {
  background: var(--bg-secondary);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-brand {
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}

.footer-description {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.footer-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

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

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--brand-pink);
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--bg-tertiary);
  border-radius: 50%;
  color: var(--text-primary);
  font-size: 1.25rem;
  transition: all var(--transition-fast);
}

.social-link:hover {
  background: var(--brand-pink);
  transform: translateY(-3px);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  margin-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* ============================================
   Loading Spinner
   ============================================ */

.spinner-gradient {
  width: 48px;
  height: 48px;
  border: 4px solid rgba(255, 255, 255, 0.1);
  border-top-color: var(--brand-pink);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.spinner-border-sm {
  width: 1rem;
  height: 1rem;
  border-width: 2px;
}