/**
 * 🧩 TrackMyIVF Component Library
 * Consolidated component styles using design tokens
 * Includes: buttons, cards, forms, navigation
 */

/* =================================================================
   BUTTON COMPONENTS
   ================================================================= */

/* Base button class */
.btn-base {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--button-padding-y) var(--button-padding-x);
  min-height: var(--button-min-height);
  border-radius: var(--button-radius);
  font-weight: var(--button-font-weight);
  font-size: var(--button-font-size);
  line-height: var(--leading-tight);
  text-align: center;
  text-decoration: none;
  transition: var(--button-transition);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

/* Button hover state */
.btn-base:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Button active state */
.btn-base:active {
  transform: scale(0.98);
}

/* Button focus state */
.btn-base:focus-visible {
  outline: 3px solid var(--color-purple-500);
  outline-offset: 2px;
  box-shadow: var(--shadow-focus-ring);
}

/* Primary button - Purple gradient */
.btn-primary {
  background: var(--gradient-purple);
  color: var(--color-white);
  box-shadow: var(--shadow-purple);
}

.btn-primary:hover {
  box-shadow: var(--shadow-purple-lg);
  filter: brightness(1.05);
}

/* Secondary button - Solid purple */
.btn-secondary {
  background: var(--color-purple-500);
  color: var(--color-white);
  box-shadow: 0 4px 16px var(--color-purple-500-20);
}

.btn-secondary:hover {
  background: var(--color-purple-600);
  box-shadow: 0 8px 24px var(--color-purple-500-30);
}

/* Orange button - Special offers */
.btn-orange {
  background: linear-gradient(135deg, #fb923c 0%, #ea580c 100%);
  color: var(--color-white);
  box-shadow: 0 4px 16px rgba(251, 146, 60, 0.3);
}

.btn-orange:hover {
  background: linear-gradient(135deg, #fdba74 0%, #f97316 100%);
  box-shadow: 0 8px 24px rgba(251, 146, 60, 0.4);
}

/* Gray button - Neutral actions */
.btn-gray {
  background: linear-gradient(135deg, var(--color-gray-100) 0%, var(--color-gray-200) 100%);
  color: var(--color-gray-700);
  box-shadow: var(--shadow-sm);
}

.btn-gray:hover {
  background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-gray-100) 100%);
  box-shadow: var(--shadow-md);
  color: var(--color-gray-900);
}

/* Outline button */
.btn-outline {
  background: transparent;
  color: var(--color-purple-500);
  border: 2px solid var(--color-purple-500);
  box-shadow: none;
}

.btn-outline:hover {
  background: var(--color-purple-50);
  box-shadow: 0 4px 16px var(--color-purple-500-10);
}

/* Button sizes */
.btn-sm {
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  min-height: var(--space-10);
}

.btn-lg {
  padding: var(--space-5) var(--space-10);
  font-size: var(--text-xl);
  min-height: var(--space-14);
}

/* Full width button */
.btn-block {
  width: 100%;
  display: block;
}

/* Mobile-specific button adjustment */
@media (max-width: 768px) {
  .btn-mobile-full {
    width: 100%;
  }
}

/* Disabled state */
.btn-base:disabled,
.btn-base.disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: var(--shadow-sm) !important;
}

/* Loading state */
.btn-loading {
  color: transparent;
  pointer-events: none;
}

.btn-loading::after {
  content: "";
  position: absolute;
  width: var(--space-5);
  height: var(--space-5);
  top: 50%;
  left: 50%;
  margin-left: calc(var(--space-5) / -2);
  margin-top: calc(var(--space-5) / -2);
  border: 2px solid var(--color-white);
  border-radius: var(--radius-full);
  border-top-color: transparent;
  animation: btn-spinner 0.8s linear infinite;
}

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

/* =================================================================
   CARD COMPONENTS
   ================================================================= */

/* Base card */
.card {
  background: var(--color-white);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  box-shadow: var(--card-shadow);
  transition: all var(--transition-base) var(--ease-out);
  overflow: hidden;
}

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

/* Feature card */
.feature-card {
  background: var(--color-white);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-slow) var(--ease-out-cubic);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-purple);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-slow) var(--ease-out);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-card-icon {
  width: var(--space-12);
  height: var(--space-12);
  background: var(--color-purple-100);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  font-size: var(--text-2xl);
}

.feature-card-title {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-gray-900);
  margin-bottom: var(--space-2);
}

.feature-card-description {
  color: var(--color-gray-600);
  line-height: var(--leading-relaxed);
}

/* Pricing card */
.pricing-card {
  background: var(--color-white);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-md);
  position: relative;
  transition: all var(--transition-slow) var(--ease-out-cubic);
  border: 2px solid transparent;
}

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

.pricing-card.featured {
  border-color: var(--color-purple-500);
  box-shadow: var(--shadow-purple);
}

.pricing-card-badge {
  position: absolute;
  top: calc(var(--space-4) * -1);
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-purple);
  color: var(--color-white);
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  white-space: nowrap;
}

.pricing-card-price {
  font-size: var(--text-5xl);
  font-weight: var(--font-bold);
  color: var(--color-gray-900);
  line-height: var(--leading-none);
}

.pricing-card-price-unit {
  font-size: var(--text-lg);
  color: var(--color-gray-600);
  font-weight: var(--font-normal);
}

/* =================================================================
   FORM COMPONENTS
   ================================================================= */

/* Form group */
.form-group {
  margin-bottom: var(--space-6);
}

/* Form label */
.form-label {
  display: block;
  font-weight: var(--font-medium);
  color: var(--color-gray-700);
  margin-bottom: var(--space-2);
}

/* Form hint */
.form-hint {
  font-size: var(--text-sm);
  color: var(--color-gray-600);
  margin-top: var(--space-1);
}

/* Form error */
.form-error {
  font-size: var(--text-sm);
  color: var(--color-warning-600);
  margin-top: var(--space-1);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

/* Input with icon */
.input-with-icon {
  position: relative;
}

.input-with-icon input {
  padding-left: var(--space-12);
}

.input-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-gray-500);
  pointer-events: none;
}

/* =================================================================
   BADGE COMPONENTS
   ================================================================= */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  transition: all var(--transition-fast) var(--ease-out);
}

.badge-purple {
  background: var(--color-purple-100);
  color: var(--color-purple-700);
}

.badge-success {
  background: var(--color-success-100);
  color: var(--color-success-600);
}

.badge-warning {
  background: var(--color-warning-100);
  color: var(--color-warning-600);
}

.badge-gray {
  background: var(--color-gray-100);
  color: var(--color-gray-700);
}

/* =================================================================
   ALERT COMPONENTS
   ================================================================= */

.alert {
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-lg);
  border: 2px solid;
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.alert-icon {
  flex-shrink: 0;
  width: var(--space-6);
  height: var(--space-6);
}

.alert-content {
  flex: 1;
}

.alert-title {
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-1);
}

.alert-message {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

.alert-success {
  background: var(--color-success-100);
  border-color: var(--color-success-500);
  color: var(--color-success-600);
}

.alert-warning {
  background: var(--color-warning-100);
  border-color: var(--color-warning-500);
  color: var(--color-warning-600);
}

.alert-info {
  background: var(--color-purple-50);
  border-color: var(--color-purple-500);
  color: var(--color-purple-700);
}

/* =================================================================
   HERO COMPONENTS
   ================================================================= */

.hero-title {
  font-size: var(--text-5xl);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--color-gray-900);
  margin-bottom: var(--space-6);
}

.hero-subtitle {
  font-size: var(--text-xl);
  color: var(--color-gray-600);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
  max-width: 48rem;
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: var(--text-6xl);
  }
  
  .hero-subtitle {
    font-size: var(--text-2xl);
  }
}

/* =================================================================
   STAT COMPONENTS
   ================================================================= */

.stat-container {
  text-align: center;
  padding: var(--space-6);
}

.stat-number {
  font-size: var(--text-5xl);
  font-weight: var(--font-bold);
  background: var(--gradient-purple);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: var(--leading-none);
  margin-bottom: var(--space-2);
}

.stat-label {
  font-size: var(--text-lg);
  color: var(--color-gray-600);
  font-weight: var(--font-medium);
}

/* =================================================================
   SPECIAL COMPONENTS
   ================================================================= */

/* Brand text gradient */
.brand-text {
  background: var(--gradient-purple);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: var(--font-bold);
}

/* Gradient text */
.gradient-text {
  background: var(--gradient-purple);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Breathing logo animation */
.logo-breathing {
  animation: breathe var(--breathe-duration) ease-in-out infinite;
}

/* Gradient divider */
.divider-gradient {
  height: 2px;
  background: var(--gradient-purple);
  border: none;
  margin: var(--space-12) 0;
  opacity: 0.3;
}

/* Section components */
.section {
  padding: var(--space-20) 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
  max-width: 48rem;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  color: var(--color-gray-900);
  margin-bottom: var(--space-4);
  line-height: var(--leading-tight);
}

.section-subtitle {
  font-size: var(--text-xl);
  color: var(--color-gray-600);
  line-height: var(--leading-relaxed);
}

/* Purple section variant */
.section-purple {
  background: var(--gradient-purple-subtle);
  border-radius: var(--radius-3xl);
  padding: var(--space-16);
  margin: var(--space-20) 0;
}

/* =================================================================
   RESPONSIVE ADJUSTMENTS
   ================================================================= */

@media (max-width: 768px) {
  /* Cards stack on mobile */
  .card-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  
  /* Reduce padding on mobile */
  .section {
    padding: var(--space-12) 0;
  }
  
  .section-header {
    margin-bottom: var(--space-10);
  }
  
  /* Mobile-specific text sizes */
  .section-title {
    font-size: var(--text-3xl);
  }
  
  .section-subtitle {
    font-size: var(--text-lg);
  }
}