/*
 * ============================================
 * KETBOOK UNIFIED BLOCKS CSS
 * Consistent spacing, sizing, and visual rhythm
 * ============================================
 */

/* DESIGN TOKENS */
:root {
  --block-max-width: 1200px;
  --block-grid-gap: var(--space-6);
  --block-grid-min: 320px;
  --block-border-radius: var(--radius-lg);
  --block-shadow: 0 2px 8px rgb(0 0 0 / 0.1);
}

/* 1. HERO BLOCKS */
.block-hero {
  width: 100%;
  padding: var(--space-16) var(--space-6);
  text-align: center;
}

.block-hero--carousel {
  min-height: 500px;
  position: relative;
}

.block-hero--gradient {
  background: linear-gradient(135deg, var(--spacex-blue) 0%, var(--spacex-blue-bright) 100%);
}

.block-hero__title {
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.block-hero__subtitle {
  font-size: var(--text-xl);
  color: var(--text-secondary);
}

/* 2. SECTION BLOCKS */
.block-section {
  max-width: var(--width-default);
  margin: 0 auto var(--space-12);
  padding: var(--space-12) var(--space-6);
}

/* Section Padding Modifiers */
.block-section--compact {
  padding: var(--space-6) var(--space-6);
}

.block-section--spacious {
  padding: var(--space-16) var(--space-6);
}

.block-section--no-padding-top {
  padding-top: 0;
}

.block-section--no-padding-bottom {
  padding-bottom: 0;
}

.block-section__title {
  font-size: var(--text-3xl);
  font-weight: 700;
  margin-bottom: var(--space-8);
  color: var(--text-primary);
}

.block-section__title--center {
  text-align: center;
}

/* 3. CARD BLOCKS */
.block-card {
  background: var(--space-gray-800);
  border-radius: var(--block-border-radius);
  border: 1px solid var(--glass-border);
  padding: var(--space-6);
  transition: all 0.3s ease;
}

.block-card:hover {
  border-color: var(--spacex-blue);
  box-shadow: var(--block-shadow);
  transform: var(--hover-lift-sm);
}

.block-card__image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
}

.block-card__meta {
  font-size: var(--text-xs);
  color: var(--spacex-blue);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.block-card__title {
  font-size: var(--text-xl);
  font-weight: 600;
  margin: var(--space-3) 0;
  color: var(--text-primary);
}

.block-card__title a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.block-card__title a:hover {
  color: var(--spacex-blue-light);
}

.block-card__description {
  color: var(--text-secondary);
  line-height: 1.6;
}

.block-card__cta {
  color: var(--spacex-blue);
  font-weight: 600;
  display: inline-block;
  margin-top: var(--space-4);
}

/* 4. GRID BLOCKS */
.block-grid {
  display: grid;
  gap: var(--block-grid-gap);
}

/* 5. SUMMARY BLOCKS */
.block-summary {
  padding: var(--space-8);
  border-radius: var(--block-border-radius);
  margin-bottom: var(--space-10);
}

.block-summary--glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
}

.block-summary--solid {
  background: var(--space-gray-800);
  border: 2px solid var(--spacex-blue);
}

.block-summary--bordered {
  background: transparent;
  border: 1px solid var(--glass-border);
}

.block-summary__title {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
  color: var(--spacex-blue);
}

.block-summary__content {
  color: var(--text-secondary);
  line-height: 1.8;
}

.block-summary__content ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.block-summary__content ul li {
  position: relative;
  padding-left: var(--space-8);
  margin-bottom: var(--space-4);
  color: var(--text-primary);
  line-height: 1.6;
}

.block-summary__content ul li::before {
  content: '\f00c';
  font-family: 'Font Awesome 6 Free', sans-serif;
  font-weight: 900;
  position: absolute;
  left: 0;
  color: var(--spacex-blue);
  font-size: var(--text-lg);
}

/* 6. SIDEBAR BLOCKS */
.block-sidebar {
  width: 320px;
}

.block-sidebar--sticky {
  position: sticky;
  top: 100px;
}

.block-sidebar--right {
  float: right;
  margin-left: var(--space-8);
}

.block-sidebar--left {
  float: left;
  margin-right: var(--space-8);
}

/* 7. QUESTIONS BLOCKS */
.block-questions {
  margin: var(--space-12) 0;
  padding: var(--space-12) var(--space-6);
  border-top: 1px solid var(--glass-border);
}

.block-questions__title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-6);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.block-questions__title i {
  color: var(--spacex-blue);
}

.block-questions--grid .block-questions__list {
  display: grid;
  gap: var(--space-4);
  max-width: 900px;
  margin: 0 auto;
}

.block-questions--list .block-questions__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.block-questions__item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  background: var(--space-gray-800);
  border: 3px solid var(--spacex-blue);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  box-shadow: 0 2px 8px rgb(0 0 0 / 0.1);
}

.block-questions__item i {
  color: var(--spacex-blue);
  transition: all 0.3s ease;
}

.block-questions__item:hover {
  border-color: var(--spacex-blue-bright);
  background: rgb(0 112 243 / 0.1);
  transform: translateX(8px);
  box-shadow: 0 4px 16px rgb(0 0 0 / 0.2);
}

.block-questions__item:hover i {
  color: var(--spacex-blue-bright);
  transform: translateX(4px);
}

/* 8. TAGS BLOCKS */
.block-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.block-tags__item {
  padding: var(--space-2) var(--space-4);
  background: var(--space-gray-800);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.2s ease;
}

.block-tags__item:hover {
  border-color: var(--spacex-blue);
  color: var(--spacex-blue);
}

/* 9. TIMELINE BLOCKS */
.block-timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: var(--space-12) 0;
}

.block-timeline--alternating::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, transparent, var(--spacex-blue), transparent);
  transform: translateX(-50%);
}

.block-timeline__item {
  position: relative;
  margin-bottom: var(--space-12);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--space-8);
  align-items: start;
}

.block-timeline--alternating .block-timeline__item:nth-child(odd) .block-timeline__content {
  grid-column: 1;
  text-align: right;
}

.block-timeline--alternating .block-timeline__item:nth-child(odd) .block-timeline__marker {
  grid-column: 2;
}

.block-timeline--alternating .block-timeline__item:nth-child(even) .block-timeline__content {
  grid-column: 3;
  text-align: left;
}

.block-timeline--alternating .block-timeline__item:nth-child(even) .block-timeline__marker {
  grid-column: 2;
}

.block-timeline__marker {
  position: relative;
  z-index: 2;
}

.block-timeline__dot {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--spacex-blue);
  border: 4px solid var(--space-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  color: white;
  transition: all 0.3s ease;
}

.block-timeline__item:hover .block-timeline__dot {
  transform: scale(1.2);
}

.block-timeline__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.block-timeline__card {
  background: var(--space-gray-800);
  padding: var(--space-8);
  border-radius: var(--block-border-radius);
  border: 2px solid var(--glass-border);
  text-decoration: none;
  transition: all 0.3s ease;
  display: block;
}

.block-timeline__card:hover {
  border-color: var(--spacex-blue);
  transform: var(--hover-lift-md);
  box-shadow: 0 8px 24px rgb(0 0 0 / 0.1);
}

.block-timeline__header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.block-timeline__category {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--spacex-blue);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.block-timeline__date {
  font-size: var(--text-xs);
  color: var(--text-secondary);
}

.block-timeline__title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
  line-height: 1.3;
}

.block-timeline__card:hover .block-timeline__title {
  color: var(--spacex-blue);
}

.block-timeline__description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

.block-timeline__stats {
  display: flex;
  gap: var(--space-6);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.block-timeline__stats i {
  color: var(--spacex-blue);
  margin-right: var(--space-2);
}

.block-timeline__questions {
  margin-top: var(--space-4);
  padding: var(--space-4);
  background: var(--space-dark);
  border-radius: var(--radius-md);
  text-align: left;
}

.block-timeline__questions-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--spacex-blue);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-3);
}

.block-timeline__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4);
  margin-top: var(--space-2);
  background: var(--space-gray-800);
  border: 3px solid var(--spacex-blue);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-primary);
  font-size: var(--text-sm);
  font-weight: 600;
  transition: all 0.3s ease;
}

.block-timeline__question:hover {
  border-color: var(--spacex-blue-bright);
  background: rgb(0 112 243 / 0.1);
  transform: translateX(6px);
}

.block-timeline__question i {
  color: var(--spacex-blue);
  margin-left: var(--space-3);
  transition: transform 0.3s ease;
}

.block-timeline__question:hover i {
  color: var(--spacex-blue-bright);
  transform: translateX(3px);
}

/* 10. CTA BLOCKS */
.block-cta {
  display: inline-block;
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-md);
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
}

.block-cta--primary {
  background: var(--spacex-blue);
  color: white;
}

.block-cta--primary:hover {
  background: var(--spacex-blue-bright);
  transform: var(--hover-lift-sm);
  box-shadow: 0 4px 12px rgb(0 112 243 / 0.3);
}

.block-cta--secondary {
  background: transparent;
  border: 2px solid var(--spacex-blue);
  color: var(--spacex-blue);
}

.block-cta--secondary:hover {
  background: var(--spacex-blue);
  color: white;
}

.block-cta--ghost {
  background: transparent;
  color: var(--spacex-blue);
}

.block-cta--ghost:hover {
  background: rgb(0 112 243 / 0.1);
}

.block-cta--small {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.block-cta--large {
  padding: var(--space-6) var(--space-12);
  font-size: var(--text-xl);
}

/* RESPONSIVE */
@media (width <= 768px) {
  .block-sidebar {
    width: 100%;
    float: none;
    margin: var(--space-8) 0;
  }

  .block-sidebar--sticky {
    position: static;
  }

  .block-grid {
    grid-template-columns: 1fr !important;
  }

  .block-hero__title {
    font-size: var(--text-3xl);
  }

  .block-section__title {
    font-size: var(--text-2xl);
  }

  .block-questions {
    padding: var(--space-8) var(--space-4);
  }

  /* Timeline mobile layout */
  .block-timeline--alternating::before {
    left: 20px;
  }

  .block-timeline__item {
    grid-template-columns: auto 1fr;
    gap: var(--space-4);
  }

  .block-timeline--alternating .block-timeline__item:nth-child(odd) .block-timeline__content,
  .block-timeline--alternating .block-timeline__item:nth-child(even) .block-timeline__content {
    grid-column: 2;
    text-align: left;
  }

  .block-timeline--alternating .block-timeline__item:nth-child(odd) .block-timeline__marker,
  .block-timeline--alternating .block-timeline__item:nth-child(even) .block-timeline__marker {
    grid-column: 1;
  }

  .block-timeline__dot {
    width: 40px;
    height: 40px;
    font-size: var(--text-base);
  }
}