/* =====================================================
 * DecryptCode INC — Components
 * Node Card, Stack Layer, Metric Beacon, Flow Timeline,
 * Insight Card, Breadcrumbs, Tags, Buttons
 * Last Updated: February 21, 2026
 * ===================================================== */

/* ═══════════════════════════════════════════
 * BUTTONS
 * ═══════════════════════════════════════════ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-weight: var(--weight-medium);
  font-size: var(--text-sm);
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-base);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn--primary {
  background: var(--accent-primary);
  color: var(--text-inverse);
  border-color: var(--accent-primary);
}

.btn--primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--text-inverse);
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}

.btn--ghost {
  background: transparent;
  color: var(--accent-2);
  border-color: var(--accent-2-border);
}

.btn--ghost:hover {
  background: rgba(129, 140, 248, 0.08);
  border-color: rgba(129, 140, 248, 0.4);
  color: var(--accent-2);
}

.btn--secondary {
  background: var(--accent-2-muted);
  color: var(--accent-2);
  border-color: var(--accent-2-border);
}

.btn--secondary:hover {
  background: rgba(129, 140, 248, 0.22);
  border-color: var(--accent-2);
  color: var(--accent-2-hover);
  transform: translateY(-1px);
}

.btn--lg {
  padding: 1rem 2rem;
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

.btn--sm {
  padding: 0.5rem 1rem;
  font-size: var(--text-xs);
}

.btn--icon {
  padding: 0.625rem;
  border-radius: var(--radius-md);
}

/* ═══════════════════════════════════════════
 * NODE CARD
 * Neural-network-style service/capability card
 * ═══════════════════════════════════════════ */

.node-card {
  position: relative;
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* Circuit node dot (top-left corner) */
.node-card::before {
  content: '';
  position: absolute;
  top: -3px;
  left: -3px;
  width: 6px;
  height: 6px;
  background: var(--accent-2);
  border-radius: var(--radius-full);
  opacity: 0.6;
  transition: opacity var(--transition-base);
}

.node-card:hover {
  border-color: var(--accent-2-border);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.node-card:hover::before {
  opacity: 1;
}

.node-card__icon {
  width: 40px;
  height: 40px;
  color: var(--accent-primary);
  flex-shrink: 0;
}

.node-card__icon svg {
  width: 100%;
  height: 100%;
  stroke: currentColor;
  stroke-width: 1.5;
  fill: none;
}

.node-card__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
  line-height: var(--leading-snug);
}

.node-card__desc {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.node-card__tech {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  letter-spacing: var(--tracking-mono);
}

.node-card__tech::before {
  content: '▸ ';
  color: var(--accent-primary);
  opacity: 0.6;
}

.node-card__link {
  margin-top: auto;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--accent-primary);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: gap var(--transition-base), color var(--transition-base);
}

.node-card__link:hover {
  color: var(--accent-hover);
  gap: var(--space-3);
}

.node-card__link::after {
  content: '→';
}

/* ═══════════════════════════════════════════
 * STACK LAYER
 * Technology stack visualization (rows)
 * ═══════════════════════════════════════════ */

.stack-layer {
  display: grid;
  grid-template-columns: 140px 1fr;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--accent-2);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  transition: border-color var(--transition-base), background var(--transition-base);
}

.stack-layer:hover {
  background: var(--bg-tertiary);
  border-color: var(--accent-2-border);
  border-left-color: var(--accent-2);
}

.stack-layer__label {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: var(--accent-primary);
  white-space: nowrap;
}

.stack-layer__items {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
}

.stack-layer__tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-secondary);
  letter-spacing: var(--tracking-mono);
  white-space: nowrap;
  transition: border-color var(--transition-base), color var(--transition-base);
}

.stack-layer__tag:hover {
  border-color: var(--accent-primary);
  color: var(--text-primary);
}

/* Stack on mobile */
@media (max-width: 639px) {
  .stack-layer {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }
}

/* ═══════════════════════════════════════════
 * METRIC BEACON
 * Pulsing statistic display
 * ═══════════════════════════════════════════ */

.metric-strip {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.metric-beacon {
  text-align: center;
  padding: var(--space-4);
}

.metric-beacon__value {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: var(--weight-extrabold);
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  letter-spacing: var(--tracking-tight);
}

.metric-beacon__label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-top: var(--space-2);
  line-height: var(--leading-snug);
}

/* Pulse animation */
.metric-beacon--pulse {
  animation: beacon-pulse 3s ease-in-out infinite;
}

@keyframes beacon-pulse {
  0%, 100% { box-shadow: none; }
  50% { box-shadow: var(--shadow-glow); }
}

/* ═══════════════════════════════════════════
 * FLOW TIMELINE
 * Vertical process timeline (pipeline style)
 * ═══════════════════════════════════════════ */

.flow-timeline {
  position: relative;
  padding-left: var(--space-8);
}

/* Vertical line */
.flow-timeline::before {
  content: '';
  position: absolute;
  left: 5px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-default);
}

.flow-timeline__step {
  position: relative;
  padding-bottom: var(--space-8);
}

.flow-timeline__step:last-child {
  padding-bottom: 0;
}

/* Node dot */
.flow-timeline__step::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-8) + 0px);
  top: 4px;
  width: 12px;
  height: 12px;
  background: var(--accent-primary);
  border-radius: var(--radius-full);
  border: 2px solid var(--bg-primary);
  z-index: 1;
}

/* Last step: diamond shape */
.flow-timeline__step:last-child::before {
  border-radius: 2px;
  transform: rotate(45deg);
  width: 10px;
  height: 10px;
}

.flow-timeline__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.flow-timeline__desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-normal);
  margin-bottom: var(--space-3);
}

.flow-timeline__duration {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  background: var(--bg-tertiary);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  letter-spacing: var(--tracking-mono);
}

/* ═══════════════════════════════════════════
 * INSIGHT CARD
 * Blog post card with data-readout style
 * ═══════════════════════════════════════════ */

.insight-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--accent-3);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: all var(--transition-base);
  text-decoration: none;
  color: inherit;
}

.insight-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-2-border);
  color: inherit;
}

.insight-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
}

.insight-card__meta-divider::before {
  content: '·';
  margin-inline: var(--space-1);
}

.insight-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
  line-height: var(--leading-snug);
}

.insight-card__excerpt {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-normal);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.insight-card__footer {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  margin-top: auto;
}

/* Intent tag pill */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.tag--cost {
  background: var(--accent-muted);
  color: var(--accent-primary);
}

.tag--comparison {
  background: var(--info-muted);
  color: var(--info);
}

.tag--compliance {
  background: var(--success-muted);
  color: var(--success);
}

.tag--integration {
  background: var(--warning-muted);
  color: var(--warning);
}

.tag--educational {
  background: rgba(129, 140, 248, 0.1);
  color: var(--accent-2);
}

/* ═══════════════════════════════════════════
 * BREADCRUMB
 * ═══════════════════════════════════════════ */

.breadcrumb {
  padding-block: var(--space-4);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
}

.breadcrumb__list {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
  flex-wrap: wrap;
  padding: 0;
  margin: 0;
}

.breadcrumb__item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Arrow separator between items */
.breadcrumb__item + .breadcrumb__item::before {
  content: '›';
  color: var(--text-tertiary);
  opacity: 0.5;
  font-size: 0.75rem;
}

.breadcrumb__link {
  color: var(--text-tertiary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumb__link:hover {
  color: var(--accent-primary);
}

.breadcrumb__item--active {
  color: var(--text-secondary);
}

.breadcrumb__separator {
  color: var(--text-tertiary);
  opacity: 0.5;
  font-size: 0.625rem;
}

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

/* ═══════════════════════════════════════════
 * ACCORDION (FAQ)
 * ═══════════════════════════════════════════ */

.accordion {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.accordion__item {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-base);
}

.accordion__item[open] {
  border-color: var(--accent-2-border);
}

.accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-5) var(--space-6);
  background: var(--gradient-card);
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: var(--weight-semibold);
  font-size: var(--text-lg);
  color: var(--text-primary);
  text-align: left;
  transition: background var(--transition-fast);
  list-style: none;
}

.accordion__trigger::-webkit-details-marker {
  display: none;
}

.accordion__trigger::after {
  content: '+';
  font-size: var(--text-lg);
  color: var(--accent-3);
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

.accordion__item[open] .accordion__trigger::after {
  content: '−';
}

.accordion__trigger:hover {
  background: var(--bg-tertiary);
}

.accordion__content {
  padding: var(--space-2) var(--space-6) var(--space-5);
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* ═══════════════════════════════════════════
 * CASE STUDY CARD (preview)
 * ═══════════════════════════════════════════ */

.case-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: all var(--transition-base);
  text-decoration: none;
  color: inherit;
}

.case-card:hover {
  border-color: var(--accent-3-border);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
  color: inherit;
}

.case-card__img {
  width: 100%;
  overflow: hidden;
  flex-shrink: 0;
}

.case-card__img img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-base);
}

.case-card:hover .case-card__img img {
  transform: scale(1.03);
}

.case-card__tags,
.case-card__title,
.case-card__excerpt,
.case-card__stats {
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

.case-card__tags {
  padding-top: var(--space-4);
}

.case-card__stats {
  padding-bottom: var(--space-6);
}

.case-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.case-card__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
  line-height: var(--leading-snug);
}

.case-card__excerpt {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.case-card__stats {
  display: flex;
  gap: var(--space-6);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border-subtle);
  margin-top: auto;
}

.case-card__stat-value {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--accent-3);
}

.case-card__stat-label {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
}

/* ═══════════════════════════════════════════
 * INDUSTRY CARD
 * ═══════════════════════════════════════════ */

.industry-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: all var(--transition-base);
  text-decoration: none;
  color: inherit;
}

.industry-card:hover {
  border-color: var(--accent-2-border);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
  color: inherit;
}

.industry-card__icon {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-2);
}

.industry-card__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
}

.industry-card__desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-normal);
}

.industry-card__stats {
  display: flex;
  gap: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  margin-top: auto;
}

/* ═══════════════════════════════════════════
 * TESTIMONIAL CARD
 * ═══════════════════════════════════════════ */

.testimonial-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: all var(--transition-base);
}

.testimonial-card:hover {
  border-color: var(--accent-3-border);
  box-shadow: 0 0 20px rgba(34, 211, 238, 0.06);
}

.testimonial-card__quote {
  font-size: var(--text-base);
  color: var(--text-primary);
  line-height: var(--leading-relaxed);
  font-style: italic;
  position: relative;
  padding-left: var(--space-4);
  border-left: 2px solid var(--accent-2);
}

.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: auto;
}

.testimonial-card__name {
  font-weight: var(--weight-medium);
  font-size: var(--text-sm);
  color: var(--text-primary);
}

.testimonial-card__role {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
}

.testimonial-card__stars {
  color: var(--accent-primary);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
}

/* ═══════════════════════════════════════════
 * KEY TAKEAWAYS BOX
 * ═══════════════════════════════════════════ */

.takeaways {
  background: var(--gradient-card);
  border: 1px solid var(--accent-2-border);
  border-left: 3px solid var(--accent-2);
  border-radius: var(--radius-md);
  padding: var(--space-5);
}

.takeaways__title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  color: var(--accent-2);
  margin-bottom: var(--space-3);
}

.takeaways ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.takeaways li {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-normal);
  padding-left: var(--space-5);
  position: relative;
}

.takeaways li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: var(--weight-bold);
}

/* ═══════════════════════════════════════════
 * RESPONSIVE: Metric Strip
 * ═══════════════════════════════════════════ */

@media (min-width: 768px) {
  .metric-strip {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ═══════════════════════════════════════════
 * IMAGE LIGHTBOX
 * ═══════════════════════════════════════════ */

.service-hero__img,
.blog-post__hero-img,
.case-study__hero-img,
.blog-hero {
  cursor: zoom-in;
}

.img-lightbox {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  padding: 24px;
}

.img-lightbox.is-active {
  opacity: 1;
  visibility: visible;
}

.img-lightbox__inner {
  position: relative;
  max-width: 95vw;
  max-height: 92vh;
  transform: scale(0.92) translateY(16px);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.img-lightbox.is-active .img-lightbox__inner {
  transform: scale(1) translateY(0);
}

.img-lightbox__img {
  display: block;
  max-width: 95vw;
  max-height: 90vh;
  width: auto;
  height: auto;
  border-radius: var(--radius-lg, 16px);
  box-shadow: 0 25px 80px rgba(0, 0, 0, 0.5);
  object-fit: contain;
}

.img-lightbox__close {
  position: absolute;
  top: -18px;
  right: -18px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: #fff;
  color: #1a1a2e;
  font-size: 22px;
  font-weight: 700;
  line-height: 44px;
  text-align: center;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  transition: all 0.25s ease;
  z-index: 2;
}

.img-lightbox__close:hover {
  background: var(--amber, #faaf52);
  transform: rotate(90deg) scale(1.1);
  box-shadow: 0 6px 25px rgba(250, 175, 82, 0.5);
}

@media (max-width: 767px) {
  .img-lightbox {
    padding: 12px;
  }

  .img-lightbox__close {
    top: -14px;
    right: -14px;
    width: 38px;
    height: 38px;
    font-size: 20px;
    line-height: 38px;
  }
}