/**
 * 🧩 COMPONENT LIBRARY
 * Standardized, reusable components for Font Scanner Suite
 * Version: 2.0 - Business-Ready Streamline
 * 
 * Dependencies: design-tokens.css
 * Usage: Import after design-tokens.css
 * <link rel="stylesheet" href="/components.css">
 */

/* ========================================
   METRIC CARD
   Standard metric display component
   ======================================== */

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: var(--transition-all);
  position: relative;
  overflow: hidden;
}

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

.metric-card__label {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  color: var(--color-gray-400);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-2);
  font-weight: var(--font-weight-semibold);
}

.metric-card__value {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin-bottom: var(--space-1);
}

.metric-card__subtitle {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--color-gray-500);
}

/* Metric Card Variants */
.metric-card--primary { border-color: var(--color-primary); }
.metric-card--success { border-color: var(--color-success); }
.metric-card--warning { border-color: var(--color-warning); }
.metric-card--error { border-color: var(--color-error); }

/* ========================================
   RING CHART
   Circular score display with grade
   ======================================== */

.ring-chart {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 140px;
  height: 140px;
  margin: 0 auto;
  position: relative;
}

.ring-chart__circle {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle, rgba(0,0,0,0.95) 0%, rgba(0,0,0,1) 100%);
  border: 4px solid;
  box-shadow: var(--shadow-md);
  transition: var(--transition-all);
}

.ring-chart__circle:hover {
  transform: scale(1.05);
}

.ring-chart__score {
  font-family: var(--font-mono);
  font-size: 2.8rem;
  font-weight: var(--font-weight-black);
  color: var(--color-white);
  line-height: 1;
}

.ring-chart__label {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--color-gray-400);
  margin-top: var(--space-1);
  font-weight: var(--font-weight-semibold);
}

.ring-chart__grade {
  margin-top: var(--space-3);
  font-family: var(--font-sans);
  font-weight: var(--font-weight-bold);
  font-size: var(--text-sm);
}

/* Ring Chart Color Variants */
.ring-chart--excellent .ring-chart__circle {
  border-color: var(--color-success);
  box-shadow: var(--glow-success);
}
.ring-chart--excellent .ring-chart__grade { color: var(--color-success); }

.ring-chart--good .ring-chart__circle {
  border-color: var(--color-primary);
  box-shadow: var(--glow-primary);
}
.ring-chart--good .ring-chart__grade { color: var(--color-primary); }

.ring-chart--fair .ring-chart__circle {
  border-color: var(--color-warning);
  box-shadow: var(--glow-warning);
}
.ring-chart--fair .ring-chart__grade { color: var(--color-warning); }

.ring-chart--poor .ring-chart__circle {
  border-color: var(--color-error);
  box-shadow: var(--glow-error);
}
.ring-chart--poor .ring-chart__grade { color: var(--color-error); }

/* Animated Ring (for loading/progress) */
@keyframes ring-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.02); }
}

.ring-chart--animating .ring-chart__circle {
  animation: ring-pulse 2s ease-in-out infinite;
}

/* ========================================
   ACCORDION SECTION
   Collapsible content panels
   ======================================== */

.accordion {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
  overflow: hidden;
  transition: var(--transition-all);
}

.accordion__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg);
  cursor: pointer;
  user-select: none;
  transition: var(--transition-colors);
  background: var(--bg-elevated);
}

.accordion__header:hover {
  background: var(--bg-card);
}

.accordion__title {
  font-family: var(--font-sans);
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin: 0;
}

.accordion__icon {
  width: 24px;
  height: 24px;
  transition: var(--transition-transform);
  color: var(--color-gray-400);
}

.accordion--open .accordion__icon {
  transform: rotate(180deg);
}

.accordion__content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-slow) var(--ease-in-out);
}

.accordion--open .accordion__content {
  max-height: 10000px; /* Large enough for any content */
}

.accordion__body {
  padding: var(--space-lg);
  border-top: 1px solid var(--border-color-subtle);
}

/* ========================================
   ACTION BAR
   Input + Button combination
   ======================================== */

.action-bar {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-lg);
  background: var(--bg-elevated);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
}

.action-bar__input {
  flex: 1;
  padding: var(--input-padding-y) var(--input-padding-x);
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--color-white);
  font-family: var(--font-mono);
  font-size: var(--input-font-size);
  transition: var(--transition-colors);
}

.action-bar__input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--glow-primary);
}

.action-bar__input::placeholder {
  color: var(--color-gray-500);
}

.action-bar__button {
  padding: var(--btn-padding-y) var(--btn-padding-x);
  background: var(--color-primary);
  color: var(--color-black);
  border: none;
  border-radius: var(--btn-radius);
  font-family: var(--font-sans);
  font-size: var(--btn-font-size);
  font-weight: var(--btn-font-weight);
  cursor: pointer;
  transition: var(--transition-all);
  white-space: nowrap;
  min-width: 120px;
}

.action-bar__button:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--glow-primary-strong);
  transform: translateY(-1px);
}

.action-bar__button:active {
  transform: translateY(0);
}

.action-bar__button:disabled {
  background: var(--color-gray-700);
  color: var(--color-gray-500);
  cursor: not-allowed;
  box-shadow: none;
}

/* Responsive */
@media (max-width: 640px) {
  .action-bar {
    flex-direction: column;
  }
  
  .action-bar__button {
    width: 100%;
  }
}

/* ========================================
   CTA BOX
   Call-to-action / conversion component
   ======================================== */

.cta-box {
  background: var(--bg-gradient-primary);
  border: 2px solid;
  border-image: linear-gradient(135deg, var(--color-primary), var(--color-secondary)) 1;
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: var(--transition-all);
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(0, 255, 157, 0.1) 0%, transparent 70%);
  animation: cta-glow 4s ease-in-out infinite;
  pointer-events: none;
}

@keyframes cta-glow {
  0%, 100% { opacity: 0.3; transform: rotate(0deg); }
  50% { opacity: 0.6; transform: rotate(180deg); }
}

.cta-box:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2xl), var(--glow-primary-strong);
}

.cta-box__title {
  font-family: var(--font-sans);
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin: 0 0 var(--space-4) 0;
}

.cta-box__description {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--color-gray-300);
  margin: 0 0 var(--space-6) 0;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-box__buttons {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

.cta-box__button {
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-lg);
  font-family: var(--font-sans);
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: var(--transition-all);
  border: none;
  position: relative;
  z-index: 1;
}

.cta-box__button--primary {
  background: var(--color-primary);
  color: var(--color-black);
}

.cta-box__button--primary:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--glow-primary-strong);
  transform: translateY(-2px);
}

.cta-box__button--secondary {
  background: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-primary);
}

.cta-box__button--secondary:hover {
  background: var(--color-primary-dim);
  border-color: var(--color-primary-hover);
}

.cta-box__trust-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  margin-top: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-gray-400);
  font-family: var(--font-sans);
}

.cta-box__trust-badge::before {
  content: '🔒';
}

/* ========================================
   SECTION HEADER
   Standardized section title component
   ======================================== */

.section-header {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--border-color-subtle);
}

.section-header__title {
  font-family: var(--font-sans);
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin: 0 0 var(--space-2) 0;
}

.section-header__subtitle {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--color-gray-400);
  margin: 0;
}

/* ========================================
   HERO BAR
   Page title + domain input + action
   ======================================== */

.hero-bar {
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.hero-bar__header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.hero-bar__title {
  font-family: var(--font-mono);
  font-size: var(--text-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin: 0 0 var(--space-3) 0;
  text-transform: uppercase;
  letter-spacing: var(--tracking-tight);
}

.hero-bar__subtitle {
  font-family: var(--font-sans);
  font-size: var(--text-lg);
  color: var(--color-gray-400);
  margin: 0;
}

/* ========================================
   BADGE
   Small status indicators
   ======================================== */

.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

.badge--success {
  background: rgba(15, 255, 115, 0.15);
  color: var(--color-success);
  border: 1px solid var(--color-success);
}

.badge--warning {
  background: rgba(255, 184, 77, 0.15);
  color: var(--color-warning);
  border: 1px solid var(--color-warning);
}

.badge--error {
  background: rgba(255, 77, 77, 0.15);
  color: var(--color-error);
  border: 1px solid var(--color-error);
}

.badge--info {
  background: rgba(77, 159, 255, 0.15);
  color: var(--color-info);
  border: 1px solid var(--color-info);
}

/* ========================================
   PROGRESS BAR
   Linear progress indicator
   ======================================== */

.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--bg-input);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.progress-bar__fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--duration-slow) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.progress-bar__fill--success { background: var(--color-success); }
.progress-bar__fill--warning { background: var(--color-warning); }
.progress-bar__fill--error { background: var(--color-error); }
.progress-bar__fill--primary { background: var(--color-primary); }

/* Animated gradient for indeterminate state */
.progress-bar__fill--indeterminate {
  background: linear-gradient(
    90deg,
    var(--color-primary) 0%,
    var(--color-secondary) 50%,
    var(--color-primary) 100%
  );
  background-size: 200% 100%;
  animation: progress-slide 1.5s linear infinite;
}

@keyframes progress-slide {
  0% { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

/* ========================================
   STAT GRID
   Quick stats overview
   ======================================== */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.stat {
  text-align: center;
  padding: var(--space-6);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: var(--transition-all);
}

.stat:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.stat__value {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.stat__label {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  color: var(--color-gray-400);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}