/**
 * experiments.css
 * ─────────────────────────────────────────────────────────────
 * PURPOSE: Styles for "Experiments & Model Deployments"
 *          (the Projects section). Each project is an
 *          "experiment" with full ML metadata.
 *
 * LOGIC: Cards on a grid, clicking opens a modal with full
 *        project details + animated architecture diagram.
 *        The architecture diagram uses SVG-like flow nodes
 *        connected by dashed lines, animated via CSS.
 *
 * CUSTOMIZATION: Add projects in index.html with the
 *                .experiment-card structure.
 * ─────────────────────────────────────────────────────────────
 */

#experiments { background: var(--color-surface); }

/* ── PROJECT GRID ──────────────────────────────────────────── */
.experiments__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-6);
}

/* ── PROJECT CARD ──────────────────────────────────────────── */
.experiment-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  cursor: pointer;
  position: relative;
}

/* Top gradient accent */
.experiment-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform-origin: left;
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.experiment-card:hover {
  border-color: rgba(139, 92, 246, 0.4);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}

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

/* Card header with icon + experiment ID */
.experiment-card__header {
  padding: var(--space-5) var(--space-5) 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
}

.experiment-card__icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.experiment-card__id {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-text-faint);
  letter-spacing: 0.1em;
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.experiment-card__status-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-success);
  animation: pulse-dot 2s infinite;
}

/* Card body */
.experiment-card__body {
  padding: var(--space-4) var(--space-5);
  flex: 1;
}

.experiment-card__title {
  font-size: var(--text-base);
  font-weight: var(--weight-bold);
  color: var(--color-text);
  margin-bottom: var(--space-2);
  line-height: 1.3;
}

.experiment-card__problem {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: var(--space-4);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Tech stack chips */
.experiment-card__stack {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.stack-chip {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-primary);
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.15);
  padding: 2px var(--space-2);
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

/* Card footer — action buttons */
.experiment-card__footer {
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

/* ── PROJECT DETAIL MODAL ──────────────────────────────────── */
.project-modal__header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  padding-right: var(--space-10); /* space for close btn */
}

.project-modal__icon {
  width: 56px; height: 56px;
  border-radius: var(--radius-xl);
  display: flex; align-items: center; justify-content: center;
  font-size: 28px;
  flex-shrink: 0;
}

.project-modal__title {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--color-text);
  line-height: 1.2;
  margin-bottom: var(--space-1);
}

.project-modal__id {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  letter-spacing: 0.1em;
}

/* Modal sections */
.modal-section {
  margin-bottom: var(--space-6);
}

.modal-section__label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.modal-section__label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.modal-section__content {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ── ARCHITECTURE FLOW DIAGRAM ─────────────────────────────── */
.arch-diagram {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  padding: var(--space-4);
  background: rgba(139, 92, 246, 0.04);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}

.arch-node {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  background: var(--color-surface);
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: var(--radius-lg);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text);
  font-weight: var(--weight-medium);
  position: relative;
  animation: fadeInUp 0.4s ease both;
  transition: all var(--transition-base);
  white-space: nowrap;
  min-width: 160px;
  text-align: center;
}

.arch-node:hover {
  background: rgba(139, 92, 246, 0.1);
  border-color: var(--color-primary);
  transform: scale(1.03);
}

.arch-node__icon { font-size: 14px; }

/* Connector arrow between nodes */
.arch-connector {
  width: 2px;
  height: 28px;
  background: linear-gradient(180deg, var(--color-primary), var(--color-accent));
  position: relative;
  opacity: 0.5;
}

.arch-connector::after {
  content: '▼';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 8px;
  color: var(--color-primary);
}

/* Modal action buttons */
.project-modal__actions {
  display: flex;
  gap: var(--space-3);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
}

/* Highlighted result block */
.result-block {
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-success);
  line-height: 1.6;
}