/* ====================================
   Portfolio/Projects Section
   ==================================== */

.portfolio-section {
  padding: 100px 0 100px;
  position: relative;
  z-index: 1;
}

.portfolio-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 64px;
}

/* Portfolio Filter Tabs */
.portfolio-filters {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.filter-btn {
  padding: 10px 24px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.25s;
}

.filter-btn:hover {
  border-color: var(--text-primary);
  color: var(--text-primary);
}

.filter-btn.active {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
}

/* Project Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(520px, 1fr));
  gap: 32px;
  margin-bottom: 64px;
}

/* Project Card */
.project-card {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
  transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  cursor: pointer;
}

.project-card:hover {
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.06);
  transform: translateY(-4px);
  border-color: var(--text-primary);
}

.project-visual {
  position: relative;
  overflow: hidden;
  height: 240px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-info {
  padding: 32px;
}

.project-category {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.project-title {
  font-family: 'Instrument Serif', serif;
  font-size: 22px;
  color: var(--text-primary);
  margin-bottom: 12px;
  letter-spacing: -0.3px;
  line-height: 1.3;
}

.project-description {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.project-tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.tech-tag {
  padding: 5px 12px;
  background: transparent;
  border: 1px solid var(--tag-border);
  border-radius: 100px;
  font-size: 11px;
  color: var(--text-secondary);
  font-weight: 500;
}

.project-highlights {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  padding-top: 20px;
  border-top: 1px solid var(--border-light);
}

.highlight-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.highlight-value {
  font-family: 'Instrument Serif', serif;
  font-size: 20px;
  color: var(--text-primary);
}

.highlight-label {
  font-size: 11px;
  color: var(--text-muted);
}

/* ====================================
   Project Card Animations
   ==================================== */

/* --- 1. Graph Network (MyCofoundr / Fintech) --- */
.project-anim-graph {
  background: linear-gradient(135deg, #f0ede4 0%, #e8e4d8 100%);
}

.project-anim-graph .anim-node {
  position: absolute;
  width: 16px;
  height: 16px;
  background: #8B7355;
  border-radius: 50%;
  left: var(--x);
  top: var(--y);
  box-shadow: 0 0 12px rgba(139, 115, 85, 0.3);
  animation: graphFloat var(--dur, 4s) ease-in-out infinite alternate;
  animation-delay: var(--d, 0s);
}

.project-anim-graph .anim-node::before {
  content: '';
  position: absolute;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(139, 115, 85, 0.12);
  top: -8px;
  left: -8px;
  animation: graphPulse 2.5s ease-in-out infinite;
  animation-delay: var(--d, 0s);
}

.project-anim-graph .anim-node.hub {
  width: 28px;
  height: 28px;
  box-shadow: 0 0 24px rgba(139, 115, 85, 0.4);
}

.project-anim-graph .anim-node.hub::before {
  width: 56px;
  height: 56px;
  top: -14px;
  left: -14px;
}

.project-anim-graph .anim-line {
  position: absolute;
  height: 2px;
  background: rgba(139, 115, 85, 0.35);
  transform-origin: left center;
  left: var(--x1);
  top: var(--y1);
  width: var(--w);
  transform: rotate(var(--r));
  animation: graphLinePulse 3s ease-in-out infinite;
  animation-delay: var(--d, 0s);
}

@keyframes graphFloat {
  0% { transform: translate(0, 0); }
  100% { transform: translate(var(--mx, 8px), var(--my, -10px)); }
}

@keyframes graphPulse {
  0%, 100% { transform: scale(1); opacity: 0.3; }
  50% { transform: scale(1.8); opacity: 0; }
}

@keyframes graphLinePulse {
  0%, 100% { opacity: 0.2; }
  50% { opacity: 0.5; }
}

/* --- 2. Heartbeat (Healthcare) --- */
.project-anim-heartbeat {
  background: linear-gradient(135deg, #f0ede4 0%, #ece7db 100%);
}

.project-anim-heartbeat .anim-ecg {
  position: absolute;
  width: 200%;
  height: 100%;
  top: 0;
  left: 0;
  animation: ecgScroll 3s linear infinite;
}

.project-anim-heartbeat .anim-ecg svg {
  width: 50%;
  height: 100%;
}

.project-anim-heartbeat .anim-pulse {
  position: absolute;
  width: 16px;
  height: 16px;
  background: #C0785A;
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: heartPulse 1.2s ease-in-out infinite;
}

.project-anim-heartbeat .anim-pulse::before {
  content: '';
  position: absolute;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1.5px solid rgba(192, 120, 90, 0.3);
  top: -16px;
  left: -16px;
  animation: heartRing 1.2s ease-out infinite;
}

@keyframes ecgScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

@keyframes heartPulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); }
  15% { transform: translate(-50%, -50%) scale(1.3); }
  30% { transform: translate(-50%, -50%) scale(1); }
  45% { transform: translate(-50%, -50%) scale(1.15); }
}

@keyframes heartRing {
  0% { transform: scale(1); opacity: 0.4; }
  100% { transform: scale(2.5); opacity: 0; }
}

/* --- 3. Chat Interface (Enterprise Chatbot) --- */
.project-anim-chat {
  background: linear-gradient(135deg, #eae7de 0%, #e5e1d6 100%);
  overflow: hidden;
  padding: 0;
}

.project-anim-chat .anim-chat-feed {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  width: 100%;
  animation: chatScrollUp 18s linear infinite;
}

.project-anim-chat .anim-msg {
  max-width: 72%;
  padding: 9px 13px;
  border-radius: 14px;
  font-size: 10.5px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.45;
  flex-shrink: 0;
}

.project-anim-chat .anim-msg.user {
  align-self: flex-end;
  background: #1A1A1A;
  color: rgba(255, 255, 255, 0.88);
  border-bottom-right-radius: 4px;
}

.project-anim-chat .anim-msg.bot {
  align-self: flex-start;
  background: var(--white);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-bottom-left-radius: 4px;
}

@keyframes chatScrollUp {
  0% { transform: translateY(0); }
  100% { transform: translateY(-50%); }
}

/* --- 4. Document Stack (Legal) --- */
.project-anim-docs {
  background: linear-gradient(135deg, #eee9dd 0%, #e8e3d6 100%);
}

.project-anim-docs .anim-doc {
  position: absolute;
  width: 120px;
  height: 160px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 6px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) rotate(var(--r, 0deg));
  animation: docShuffle var(--dur, 4s) ease-in-out infinite;
  animation-delay: var(--d, 0s);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.project-anim-docs .anim-doc::before {
  content: '';
  position: absolute;
  top: 16px;
  left: 14px;
  right: 14px;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  box-shadow: 0 10px 0 var(--border), 0 20px 0 var(--border), 0 30px 0 var(--border);
}

.project-anim-docs .anim-scanline {
  position: absolute;
  width: 140px;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(139, 115, 85, 0.5), transparent);
  left: 50%;
  transform: translateX(-50%);
  animation: scanDown 3s ease-in-out infinite;
}

@keyframes docShuffle {
  0%, 100% { transform: translate(-50%, -50%) rotate(var(--r, 0deg)); }
  50% { transform: translate(calc(-50% + var(--mx, 5px)), calc(-50% + var(--my, -8px))) rotate(calc(var(--r, 0deg) + 2deg)); }
}

@keyframes scanDown {
  0% { top: 15%; opacity: 0; }
  20% { opacity: 1; }
  80% { opacity: 1; }
  100% { top: 85%; opacity: 0; }
}

/* --- 5. Converging Data (Queryloop / RAG) --- */
.project-anim-pipeline {
  background: linear-gradient(135deg, #ede9df 0%, #e7e3d8 100%);
}

.project-anim-pipeline .anim-core {
  position: absolute;
  width: 22px;
  height: 22px;
  background: #8B7355;
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 20px rgba(139, 115, 85, 0.3);
  animation: corePulse 2s ease-in-out infinite;
  z-index: 2;
}

.project-anim-pipeline .anim-core::before {
  content: '';
  position: absolute;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1.5px solid rgba(139, 115, 85, 0.15);
  top: -11px;
  left: -11px;
}

.project-anim-pipeline .anim-core::after {
  content: '';
  position: absolute;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: 1px solid rgba(139, 115, 85, 0.08);
  top: -25px;
  left: -25px;
}

.project-anim-pipeline .anim-stream {
  position: absolute;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(139, 115, 85, 0.65);
  left: var(--sx);
  top: var(--sy);
  opacity: 0;
  animation: streamToCenter var(--dur, 3s) ease-in infinite;
  animation-delay: var(--d, 0s);
}

@keyframes corePulse {
  0%, 100% { box-shadow: 0 0 20px rgba(139, 115, 85, 0.25); }
  50% { box-shadow: 0 0 40px rgba(139, 115, 85, 0.5); }
}

@keyframes streamToCenter {
  0% { opacity: 0; }
  15% { opacity: 0.7; }
  85% { opacity: 0.4; }
  100% { left: 49%; top: 48%; opacity: 0; }
}

/* --- 6. Data Grid (DEWR / Government) --- */
.project-anim-grid {
  background: linear-gradient(135deg, #edeae1 0%, #e6e2d7 100%);
}

.project-anim-grid .anim-grid-wrap {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  grid-template-rows: repeat(4, 1fr);
  gap: 6px;
  width: 70%;
  height: 65%;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.project-anim-grid .anim-cell {
  background: rgba(139, 115, 85, 0.08);
  border-radius: 4px;
  border: 1px solid rgba(139, 115, 85, 0.08);
  animation: cellHighlight 4s ease-in-out infinite;
  animation-delay: var(--d, 0s);
}

@keyframes cellHighlight {
  0%, 100% { background: rgba(139, 115, 85, 0.06); border-color: rgba(139, 115, 85, 0.06); }
  20% { background: rgba(139, 115, 85, 0.22); border-color: rgba(139, 115, 85, 0.3); }
  40% { background: rgba(139, 115, 85, 0.06); border-color: rgba(139, 115, 85, 0.06); }
}

/* --- 7. Shield (Clearpol / Compliance) --- */
.project-anim-shield {
  background: linear-gradient(135deg, #edeae0 0%, #e5e1d5 100%);
}

.project-anim-shield .anim-shield-icon {
  width: 56px;
  height: 66px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.project-anim-shield .anim-shield-icon svg {
  width: 100%;
  height: 100%;
}

.project-anim-shield .anim-orbit {
  position: absolute;
  width: var(--size, 120px);
  height: var(--size, 120px);
  border: 1.5px solid rgba(139, 115, 85, 0.15);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: orbitSpin var(--dur, 8s) linear infinite;
  animation-direction: var(--dir, normal);
}

.project-anim-shield .anim-orbit::after {
  content: '';
  position: absolute;
  width: 10px;
  height: 10px;
  background: #8B7355;
  border-radius: 50%;
  top: -5px;
  left: 50%;
  transform: translateX(-50%);
}

@keyframes orbitSpin {
  0% { transform: translate(-50%, -50%) rotate(0deg); }
  100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* --- 8. Timeline (LaReg / Regulatory) --- */
.project-anim-timeline {
  background: linear-gradient(135deg, #efece3 0%, #e7e4da 100%);
}

.project-anim-timeline .anim-tl-line {
  position: absolute;
  left: 25%;
  top: 10%;
  bottom: 10%;
  width: 2px;
  background: rgba(139, 115, 85, 0.15);
}

.project-anim-timeline .anim-tl-bar {
  position: absolute;
  left: 25%;
  height: 10px;
  background: rgba(139, 115, 85, 0.12);
  border-radius: 0 4px 4px 0;
  top: var(--y);
  width: 0;
  animation: barSlide var(--dur, 3s) ease-out infinite;
  animation-delay: var(--d, 0s);
}

.project-anim-timeline .anim-tl-bar::before {
  content: '';
  position: absolute;
  width: 8px;
  height: 8px;
  background: #8B7355;
  border-radius: 50%;
  left: -4px;
  top: 1px;
}

@keyframes barSlide {
  0% { width: 0; opacity: 0; }
  20% { opacity: 1; }
  50%, 100% { width: var(--tw, 40%); opacity: 0.6; }
}

/* ====================================
   Accessibility
   ==================================== */
@media (prefers-reduced-motion: reduce) {
  .project-anim-graph .anim-node,
  .project-anim-graph .anim-node::before,
  .project-anim-graph .anim-line,
  .project-anim-heartbeat .anim-ecg,
  .project-anim-heartbeat .anim-pulse,
  .project-anim-heartbeat .anim-pulse::before,
  .project-anim-chat .anim-chat-feed,
  .project-anim-docs .anim-doc,
  .project-anim-docs .anim-scanline,
  .project-anim-pipeline .anim-core,
  .project-anim-pipeline .anim-stream,
  .project-anim-grid .anim-cell,
  .project-anim-shield .anim-orbit,
  .project-anim-timeline .anim-tl-bar {
    animation: none;
  }
}

/* ====================================
   Responsive
   ==================================== */
@media (max-width: 900px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .project-visual {
    height: 180px;
  }

  .project-highlights {
    grid-template-columns: 1fr;
  }

  .portfolio-filters {
    gap: 8px;
  }

  .filter-btn {
    padding: 8px 16px;
    font-size: 12px;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }
}