/* ═══════════════════════════════════════════════════════════════════
   ANIMATIONS.CSS — Civil Engineering Enhanced Animations
   ═══════════════════════════════════════════════════════════════════ */

/* ── ENGINEERING CANVAS BACKGROUND ── */
#engineering-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
}

/* ── BLUEPRINT SVG ANIMATIONS ── */
.bp-rotate-slow {
  transform-origin: 520px 160px;
  animation: bpRotate 32s linear infinite;
}
.bp-rotate-rev {
  transform-origin: 520px 160px;
  animation: bpRotate 20s linear infinite reverse;
}
@keyframes bpRotate { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

.bp-draw {
  stroke-dasharray: 600;
  stroke-dashoffset: 600;
  animation: bpDraw 3s ease-out 1s forwards;
}
@keyframes bpDraw { to { stroke-dashoffset: 0; } }

/* ── LOADER BLUEPRINT SPIN ── */
.loader-blueprint {
  width: 90px; height: 90px;
  margin: 0 auto 1.5rem;
}
.loader-blueprint svg { width: 100%; height: 100%; }
.loader-spin { animation: loaderSpin 2s linear infinite; transform-origin: 100px 100px; }
.loader-spin-rev { animation: loaderSpin 1.5s linear infinite reverse; transform-origin: 100px 100px; }
@keyframes loaderSpin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

/* ── ORBIT ICONS AROUND PROFILE ── */
.orbit-icon {
  position: absolute;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  color: var(--accent-3);
  box-shadow: var(--shadow-gold);
  z-index: 10;
  animation: orbitFloat 6s ease-in-out infinite;
}
.orbit-1 {
  top: 5%; left: 50%;
  transform: translateX(-50%);
  animation-delay: 0s;
  color: var(--accent-3);
}
.orbit-2 {
  top: 50%; right: -5%;
  transform: translateY(-50%);
  animation-delay: 1.5s;
  color: var(--steel-4);
}
.orbit-3 {
  bottom: 5%; left: 50%;
  transform: translateX(-50%);
  animation-delay: 3s;
  color: var(--accent-2);
}
.orbit-4 {
  top: 50%; left: -5%;
  transform: translateY(-50%);
  animation-delay: 4.5s;
  color: var(--steel-3);
}
@keyframes orbitFloat {
  0%, 100% { transform: translateX(-50%) translateY(0px); }
  50%       { transform: translateX(-50%) translateY(-10px); }
}
.orbit-2, .orbit-4 {
  animation-name: orbitFloatY;
}
@keyframes orbitFloatY {
  0%, 100% { transform: translateY(-50%) translateX(0px); }
  50%       { transform: translateY(-50%) translateX(-8px); }
}

/* ── ENGINEERING TICKER ── */
.eng-ticker {
  width: 100%;
  overflow: hidden;
  background: linear-gradient(90deg, var(--bg-secondary), var(--bg-card), var(--bg-secondary));
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.7rem 0;
  position: relative;
  z-index: 2;
}
.eng-ticker::before,
.eng-ticker::after {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  width: 120px;
  z-index: 3;
  pointer-events: none;
}
.eng-ticker::before {
  left: 0;
  background: linear-gradient(90deg, var(--bg-primary), transparent);
}
.eng-ticker::after {
  right: 0;
  background: linear-gradient(-90deg, var(--bg-primary), transparent);
}
.eng-ticker-track {
  display: flex;
  gap: 0;
  white-space: nowrap;
  animation: tickerScroll 40s linear infinite;
  width: max-content;
}
.eng-ticker-track span {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--text-tertiary);
  text-transform: uppercase;
  padding: 0 1.2rem;
  transition: color 0.3s;
}
.eng-ticker-track span:hover { color: var(--accent-3); }
.ticker-sep { color: var(--accent-2) !important; padding: 0 !important; opacity: 0.6; }
@keyframes tickerScroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ── BLOG PREVIEW SECTION ── */
.blog-preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}
@media (max-width: 900px) { .blog-preview-grid { grid-template-columns: 1fr; } }
@media (max-width: 1100px) and (min-width: 901px) { .blog-preview-grid { grid-template-columns: repeat(2, 1fr); } }

.blog-preview-card {
  padding: 2rem;
  border-radius: var(--r-lg);
  transition: transform 0.3s var(--ease-spring), box-shadow 0.3s ease, border-color 0.3s ease;
  position: relative;
  overflow: hidden;
  cursor: default;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.blog-preview-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--steel-3), var(--accent-2));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease-out);
}
.blog-preview-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg), var(--shadow-gold); }
.blog-preview-card:hover::before { transform: scaleX(1); }
.blog-preview-card.featured {
  border-color: var(--accent-2);
  background: linear-gradient(135deg, var(--bg-card) 60%, rgba(232,164,32,0.06));
}
.blog-preview-badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--steel-4);
  background: var(--surface-2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-full);
  padding: 0.3rem 0.8rem;
  width: fit-content;
}
.blog-preview-badge.featured { color: var(--accent-3); background: var(--accent-subtle); border-color: var(--accent-2); }
.blog-preview-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.35;
  margin: 0;
  flex: 1;
}
.blog-preview-excerpt {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0;
}
.blog-preview-meta {
  display: flex;
  gap: 1.2rem;
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  font-family: var(--font-mono);
}
.blog-preview-meta span { display: flex; align-items: center; gap: 0.4rem; }
.blog-preview-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--accent-3);
  text-decoration: none;
  margin-top: auto;
  transition: gap 0.3s ease, color 0.3s;
}
.blog-preview-link:hover { gap: 0.9rem; color: var(--accent-2); }
.blog-preview-link i { font-size: 0.75rem; transition: transform 0.3s ease; }
.blog-preview-link:hover i { transform: translateX(4px); }

.blog-cta-row {
  display: flex;
  align-items: center;
  gap: 2rem;
  margin-top: 3rem;
  flex-wrap: wrap;
}
.blog-cta-note {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  margin: 0;
}

/* ── CONSTRUCTION LINE SECTION DIVIDER ── */
.divider {
  position: relative;
  height: 1px;
  background: var(--border-subtle);
  overflow: visible;
}
.divider::after {
  content: '';
  position: absolute;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 0 3px var(--bg-primary), 0 0 0 5px var(--accent-2);
  opacity: 0.6;
}

/* ── COUNTER ANIMATION ── */
.count-animated {
  display: inline-block;
  animation: countPop 0.4s var(--ease-spring);
}
@keyframes countPop {
  0%   { transform: scale(1.4); }
  100% { transform: scale(1); }
}

/* ── CARD HOVER GLOW ── */
.card {
  transition: transform 0.3s var(--ease-spring), box-shadow 0.3s ease, border-color 0.3s ease;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg), 0 0 0 1px var(--border-default);
}

/* ── HERO FLOATING ANIMATION ── */
.profile-ring-container { animation: heroFloat 6s ease-in-out infinite; }
@keyframes heroFloat {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-12px); }
}

/* ── PULSE GLOW ON BADGE ── */
.badge-pulse {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--success);
  animation: badgePulse 2s ease-in-out infinite;
  margin-right: 0.3rem;
}
@keyframes badgePulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(46,204,113,0.6); }
  50%       { box-shadow: 0 0 0 6px rgba(46,204,113,0); }
}

/* ── NAV LOGO MARK ROTATION ON HOVER ── */
.nav-logo-mark { transition: transform 0.4s var(--ease-spring), background 0.3s; }
.nav-logo:hover .nav-logo-mark { transform: rotate(15deg) scale(1.1); }

/* ── SKILL CARD HOVER ── */
.skill-card { transition: transform 0.3s var(--ease-spring), box-shadow 0.3s, border-color 0.3s; }
.skill-card:hover {
  transform: translateY(-6px) scale(1.02);
  border-color: var(--accent-2);
  box-shadow: var(--shadow-gold);
}

/* ── TIMELINE DOT PULSE ── */
.timeline-dot {
  animation: timelineDotGlow 3s ease-in-out infinite;
}
@keyframes timelineDotGlow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(232,164,32,0.4); }
  50%       { box-shadow: 0 0 0 8px rgba(232,164,32,0); }
}

/* ── FORM INPUT FOCUS ── */
.form-input:focus {
  border-color: var(--accent-2);
  box-shadow: 0 0 0 3px var(--accent-glow);
  transform: translateY(-1px);
}

/* ── BACK TO TOP PULSE ── */
#back-to-top:hover {
  animation: btPulse 0.6s var(--ease-spring);
}
@keyframes btPulse {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.2) translateY(-4px); }
  100% { transform: scale(1) translateY(0); }
}

/* ── CANVAS FADE-IN ── */
#engineering-canvas {
  animation: canvasFade 2s ease forwards;
}
@keyframes canvasFade { from { opacity: 0; } to { opacity: 0.35; } }

/* ── NOISE OVERLAY GRAIN ── */
.noise-overlay {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
}

/* ── PAGE TRANSITION ── */
body { animation: pageFadeIn 0.5s ease; }
@keyframes pageFadeIn { from { opacity: 0; } to { opacity: 1; } }

/* ── MOBILE ── */
@media (max-width: 768px) {
  .orbit-icon { width: 34px; height: 34px; font-size: 0.8rem; }
  .blog-preview-grid { grid-template-columns: 1fr; gap: 1rem; }
  .blog-cta-row { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .eng-ticker-track span { padding: 0 0.8rem; }
}