/* ==========================================================================
   Components
   Unified styles for buttons, cards, forms, and common UI elements
   ========================================================================== */

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  line-height: 1.5;
  text-decoration: none;
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

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

/* Primary Button */
.btn--primary {
  background: var(--color-primary);
  color: #000000;
  border-color: var(--color-primary);
}

.btn--primary:hover:not(:disabled) {
  background: var(--color-primary-light);
  border-color: var(--color-primary-light);
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}

.btn--primary:active:not(:disabled) {
  transform: translateY(0);
}

/* Secondary Button */
.btn--secondary {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn--secondary:hover:not(:disabled) {
  background: var(--surface-hover);
  border-color: var(--border-color-hover);
}

/* Ghost Button */
.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
  padding-left: var(--space-3);
  padding-right: var(--space-3);
}

.btn--ghost:hover:not(:disabled) {
  color: var(--text-primary);
  background: var(--surface-hover);
}

/* Size Variants */
.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  border-radius: var(--radius-md);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
  border-radius: var(--radius-xl);
}

/* Full Width */
.btn--full {
  width: 100%;
}

/* Button with icon */
.btn svg,
.btn .icon {
  width: 1em;
  height: 1em;
  flex-shrink: 0;
}

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

.card {
  background: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: all var(--transition-base);
}

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

/* Interactive Card */
.card--interactive {
  cursor: pointer;
}

.card--interactive:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

/* Card with glass effect */
.card--glass {
  background: #050505;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-xl);
}

.card--glass:hover {
  border-color: rgba(76, 175, 80, 0.5);
  box-shadow: 0 0 30px rgba(76, 175, 80, 0.15);
}

.card--glass:hover .card__icon,
.card--glass:hover .card__icon svg {
  color: #ffffff;
  filter: drop-shadow(0 0 5px rgba(76, 175, 80, 0.8));
  transform: scale(1.1);
}

/* Card with gradient border (Neon) */
.card--gradient-border {
  position: relative;
  background: var(--surface);
  border: 1px solid transparent;
  background-clip: padding-box;
  z-index: 1;
}

.card--gradient-border::before {
  content: '';
  position: absolute;
  inset: -1px;
  z-index: -1;
  margin: -1px;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.02));
  transition: opacity 0.3s ease;
}

.card--gradient-border:hover::before {
  background: linear-gradient(135deg, var(--color-primary), rgba(255, 255, 255, 0.05));
  opacity: 1;
}

/* Card sizes */
.card--sm {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
}

.card--lg {
  padding: var(--space-8);
  border-radius: var(--radius-2xl);
}

/* Card Header */
.card__header {
  margin-bottom: var(--space-4);
}

.card__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--text-primary);
  margin: 0 0 var(--space-2) 0;
}

.card__subtitle {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin: 0;
}

/* Card Body */
.card__body {
  color: var(--text-secondary);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
}

/* Card with Icon */
.card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(76, 175, 80, 0.1);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-5);
  color: var(--color-primary);
  transition: all var(--transition-base);
}

.card--interactive:hover .card__icon {
  transform: scale(1.1) rotate(5deg);
  background: rgba(76, 175, 80, 0.2);
}

.card__icon svg {
  width: 24px;
  height: 24px;
}

/* ==========================================================================
   Form Elements
   ========================================================================== */

/* Form Group */
.form-group {
  margin-bottom: var(--space-4);
}

/* Labels */
.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

/* Text Inputs */
.form-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--text-primary);
  background: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.form-input::placeholder {
  color: var(--text-tertiary);
}

.form-input:hover {
  border-color: var(--border-color-hover);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}

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

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

/* Select */
.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23a0a0a0' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  background-size: 1.25rem;
  padding-right: var(--space-10);
}

/* Inline Form (email + button) */
.form-inline {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-2);
  background: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.form-inline:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.form-inline .form-input {
  flex: 1;
  border: none;
  background: transparent;
  padding: var(--space-2) var(--space-4);
}

.form-inline .form-input:focus {
  box-shadow: none;
}

.form-inline .btn {
  border-radius: var(--radius-full);
  padding: var(--space-3) var(--space-6);
}

@media (max-width: 480px) {
  .form-inline {
    flex-direction: column;
    border-radius: var(--radius-xl);
    padding: var(--space-4);
  }

  .form-inline .form-input {
    text-align: center;
    margin-bottom: var(--space-3);
  }

  .form-inline .btn {
    width: 100%;
    border-radius: var(--radius-lg);
  }
}

/* Form Feedback */
.form-feedback {
  font-size: var(--text-sm);
  margin-top: var(--space-2);
  min-height: 0;
  opacity: 0;
  transition: all var(--transition-base);
}

/* Form Feedback Input States */
.form-input.is-valid {
  border-color: var(--color-primary);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234caf50' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
}

.form-input.is-invalid {
  border-color: #ef4444;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ef4444' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'%3E%3C/circle%3E%3Cline x1='15' y1='9' x2='9' y2='15'%3E%3C/line%3E%3Cline x1='9' y1='9' x2='15' y2='15'%3E%3C/line%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  animation: shake 0.4s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
}

@keyframes shake {
  10%,
  90% {
    transform: translate3d(-1px, 0, 0);
  }
  20%,
  80% {
    transform: translate3d(2px, 0, 0);
  }
  30%,
  50%,
  70% {
    transform: translate3d(-4px, 0, 0);
  }
  40%,
  60% {
    transform: translate3d(4px, 0, 0);
  }
}

.form-feedback.success {
  color: var(--color-primary);
  opacity: 1;
  min-height: 1.5em;
}

.form-feedback.error {
  color: #ef4444;
  opacity: 1;
  min-height: 1.5em;
}

/* Form Hint */
.form-hint {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  margin-top: var(--space-3);
}

/* ==========================================================================
   Icon Component
   ========================================================================== */

.icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.icon svg {
  width: 100%;
  height: 100%;
}

.icon--sm {
  width: 16px;
  height: 16px;
}

.icon--md {
  width: 20px;
  height: 20px;
}

.icon--lg {
  width: 24px;
  height: 24px;
}

.icon--xl {
  width: 32px;
  height: 32px;
}

/* ==========================================================================
   Badge
   ========================================================================== */

.badge {
  display: inline-block;
  padding: var(--space-1) var(--space-4);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  border-radius: var(--radius-full);
  background: rgba(76, 175, 80, 0.1);
  color: var(--color-primary);
  border: 1px solid rgba(76, 175, 80, 0.2);
}

/* ==========================================================================
   Divider
   ========================================================================== */

.divider {
  height: 1px;
  background: var(--border-color);
  border: none;
  margin: var(--space-8) 0;
}

/* ==========================================================================
   Link Styles
   ========================================================================== */

.link {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.link:hover {
  color: var(--color-primary-light);
  text-decoration: underline;
}

.link--subtle {
  color: var(--text-secondary);
}

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

/* Link with arrow */
.link--arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.link--arrow svg {
  width: 1em;
  height: 1em;
  transition: transform var(--transition-base);
}

.link--arrow:hover svg {
  transform: translateX(4px);
}