/* ═══════════════════════════════════════════════════════════════
   FUTURISTIC CV — Vinay | doctorvinay.com
   Responsive · Mobile-first · Desktop-optimized
   ═══════════════════════════════════════════════════════════════ */

:root {
  --bg: #030305;
  --bg-elevated: #08080c;
  --surface: rgba(10, 15, 25, 0.7);
  --accent: #00f2ff;
  --accent-dim: rgba(0, 242, 255, 0.3);
  --accent-glow: rgba(0, 242, 255, 0.15);
  --text: #f0f5ff;
  --text-muted: #94a3b8;
  --border: rgba(0, 242, 255, 0.1);
  --font-display: 'Syne', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --radius: 8px;
  --radius-lg: 16px;
  --transition: 0.25s cubic-bezier(0.23, 1, 0.32, 1);
  --transition-slow: 0.6s cubic-bezier(0.23, 1, 0.32, 1);
  --header-h: 80px;
  --perspective: 1200px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

/* ─── Full page load banner ─── */
.load-banner {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  animation: bannerFadeOut 1s ease-in-out 4.5s forwards;
  pointer-events: none;
  opacity: 1;
  transition: opacity 1s ease;
}

.load-banner-content {
  text-align: center;
}

.load-banner-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.02em;
  animation: bannerTitleIn 1.2s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  opacity: 0;
  transform: translateY(30px) scale(0.95);
}

.load-banner-subtitle {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  animation: bannerSubtitleIn 0.8s ease-out 0.5s forwards;
  opacity: 0;
}

.load-banner-line {
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
  margin: 1.5rem auto 0;
  animation: bannerLineGrow 0.8s ease-out 1.5s forwards;
}

.load-banner-status {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  margin-top: 1rem;
  letter-spacing: 0.1em;
  opacity: 0.6;
  animation: statusPulse 1.5s ease-in-out infinite;
}

@keyframes statusPulse {

  0%,
  100% {
    opacity: 0.3;
  }

  50% {
    opacity: 0.8;
  }
}

.load-progress-container {
  width: 240px;
  height: 2px;
  background: rgba(255, 255, 255, 0.05);
  margin: 2.5rem auto 0;
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}

.load-progress-bar {
  width: 0;
  height: 100%;
  background: var(--accent);
  box-shadow: 0 0 15px var(--accent);
  animation: loadProgressMove 4.8s cubic-bezier(0.1, 0, 0.2, 1) 0.5s forwards;
}

@keyframes loadProgressMove {
  0% {
    width: 0;
  }

  20% {
    width: 30%;
  }

  50% {
    width: 45%;
  }

  80% {
    width: 90%;
  }

  100% {
    width: 100%;
  }
}

@keyframes bannerTitleIn {
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes bannerSubtitleIn {
  to {
    opacity: 1;
  }
}

@keyframes bannerLineGrow {
  to {
    width: 150px;
  }
}

@keyframes bannerFadeOut {
  to {
    opacity: 0;
    visibility: hidden;
  }
}

body {
  font-family: var(--font-display);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ─── Background effects ─── */
.grid-bg {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: -2;
}

.grid-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(0, 212, 170, 0.03), transparent 50%);
  pointer-events: none;
}

.glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.4;
  pointer-events: none;
  z-index: -1;
}

.glow-1 {
  width: 500px;
  height: 500px;
  background: var(--accent-glow);
  top: -200px;
  right: -100px;
  animation: float 15s ease-in-out infinite;
}

.glow-2 {
  width: 400px;
  height: 400px;
  background: rgba(100, 80, 255, 0.08);
  bottom: -150px;
  left: -100px;
  animation: float 18s ease-in-out infinite reverse;
}

@keyframes float {

  0%,
  100% {
    transform: translate(0, 0);
  }

  50% {
    transform: translate(30px, 30px);
  }
}

/* ─── Custom Cursor ─── */
.custom-cursor {
  position: fixed;
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  mix-blend-mode: difference;
  transition: transform 0.1s ease;
}

.custom-cursor-follower {
  position: fixed;
  width: 40px;
  height: 40px;
  border: 1px solid var(--accent-dim);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transition: transform 0.15s ease-out;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: followerPulse 2s ease-in-out infinite;
}

@keyframes followerPulse {

  0%,
  100% {
    transform: scale(1);
    opacity: 0.5;
  }

  50% {
    transform: scale(1.2);
    opacity: 1;
  }
}

/* ─── HUD Elements ─── */
.hud-left,
.hud-right {
  position: fixed;
  bottom: 40px;
  z-index: 50;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
  opacity: 0.5;
}

.hud-left {
  left: 40px;
}

.hud-right {
  right: 40px;
  text-align: right;
}

.hud-line {
  width: 100px;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), transparent);
}

.hud-right .hud-line {
  background: linear-gradient(-90deg, var(--accent), transparent);
}

/* ─── Fireflies ─── */
#fireflies-container {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9997;
}

.firefly {
  position: absolute;
  width: 3px;
  height: 3px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 0 10px 2px var(--accent), 0 0 20px var(--accent-dim);
  pointer-events: none;
  transition: opacity 0.3s ease;
  will-change: transform, opacity;
}

/* ─── Header & Nav ─── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  z-index: 100;
  backdrop-filter: blur(12px);
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(3, 3, 5, 0.8);
  border-bottom: 1px solid var(--border);
}

.nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.15em;
  color: var(--text);
  text-decoration: none;
  transition: color var(--transition), transform var(--transition);
  display: inline-block;
}

.logo:hover {
  color: var(--accent);
  transform: scale(1.02);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
  transition: var(--transition);
  transform-origin: center;
  display: block;
}

.nav-toggle:hover span {
  background: var(--accent);
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  transition: width var(--transition);
}

.nav-links a:hover {
  color: var(--accent);
}

.nav-links a:hover::after {
  width: 100%;
}

/* ─── Hero (Dimension-style full-viewport intro) ─── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3rem;
  padding: calc(var(--header-h) + 2rem) 1.5rem 3rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.6s ease, filter 0.6s ease;
}

/* Dimension depth: hero recedes when scrolled */
body.dimension-depth .hero {
  transform: scale(0.98);
  opacity: 0.85;
  filter: blur(0.5px);
  pointer-events: none;
}

.hero-divider {
  width: 80px;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), transparent);
  margin: 1.25rem 0 1rem;
  opacity: 0.7;
}

.hero-content {
  flex: 1;
  animation: fadeUp 0.8s ease-out;
  position: relative;
}

/* Dimension-style intro “layer” (subtle depth) */
.hero-content::before {
  content: '';
  position: absolute;
  inset: -1rem;
  border: 1px solid rgba(0, 242, 255, 0.08);
  border-radius: var(--radius-lg);
  pointer-events: none;
  z-index: -1;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  animation: fadeUp 0.8s ease-out;
}

.hero-title {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
  perspective: 800px;
}

/* 3D animated name - Dr. Vinay Yadav */
.name-3d-wrap {
  display: block;
  margin-bottom: 0.15em;
}

.name-3d.name-word {
  display: inline-block;
  margin-right: 0.08em;
  background: linear-gradient(135deg, var(--accent) 0%, #00a88a 50%, #00d4aa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transform-origin: center center;
  animation: name3DEnter 1s cubic-bezier(0.4, 0, 0.2, 1) backwards;
}

.name-3d.name-word[data-word="1"] {
  animation-delay: 0.3s;
}

.name-3d.name-word[data-word="2"] {
  animation-delay: 0.5s;
}

.name-3d.name-word[data-word="3"] {
  animation-delay: 0.7s;
}

.name-3d.name-word:hover {
  animation: name3DHover 0.6s ease forwards;
}

@keyframes name3DEnter {
  from {
    opacity: 0;
    transform: translateY(40px) translateZ(-50px) rotateX(-90deg);
  }

  to {
    opacity: 1;
    transform: translateY(0) translateZ(0) rotateX(0);
  }
}

@keyframes name3DHover {
  0% {
    transform: translateY(0) rotateX(0) rotateY(0) scale(1);
  }

  25% {
    transform: translateY(-8px) rotateX(15deg) rotateY(-8deg) scale(1.05);
  }

  50% {
    transform: translateY(0) rotateX(-8deg) rotateY(8deg) scale(1.08);
  }

  75% {
    transform: translateY(-4px) rotateX(8deg) rotateY(-4deg) scale(1.05);
  }

  100% {
    transform: translateY(0) rotateX(0) rotateY(0) scale(1);
  }
}

.hero-title .name {
  display: block;
  font-size: 0.4em;
  font-weight: 500;
  background: linear-gradient(135deg, var(--accent) 0%, #00a88a 50%, #00d4aa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 30px rgba(0, 212, 170, 0.3));
  transition: filter var(--transition);
}

.hero-title .name:hover {
  filter: drop-shadow(0 0 40px rgba(0, 212, 170, 0.5));
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius);
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #00a88a);
  color: var(--bg);
  box-shadow: 0 0 30px var(--accent-dim), 0 4px 0 rgba(0, 168, 138, 0.4);
}

.btn-primary:hover {
  transform: translateY(-4px);
  box-shadow: 0 0 50px var(--accent-dim), 0 8px 0 rgba(0, 168, 138, 0.4);
}

.btn-primary:active {
  transform: translateY(-2px);
}

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

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 25px rgba(0, 212, 170, 0.2);
}

.scroll-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

.scroll-indicator:hover {
  color: var(--accent);
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {

  0%,
  100% {
    opacity: 0.3;
    transform: scaleY(0.5);
  }

  50% {
    opacity: 1;
    transform: scaleY(1);
  }
}

.hero-visual {
  flex: 0 0 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeUp 0.8s ease-out 0.2s both;
}

.orbit {
  position: relative;
  width: 200px;
  height: 200px;
  perspective: 500px;
  transition: transform var(--transition-slow);
}

.orbit-ring {
  position: absolute;
  inset: 0;
  border: 1px solid var(--border);
  border-radius: 50%;
  animation: spin 20s linear infinite;
  transition: border-color var(--transition);
}

.orbit-ring.ring-2 {
  inset: 15px;
  border-color: var(--accent-dim);
  animation-duration: 15s;
  animation-direction: reverse;
}

.orbit-ring.ring-3 {
  inset: 30px;
  border-color: rgba(0, 212, 170, 0.1);
  animation-duration: 10s;
}

.orbit:hover .orbit-ring {
  border-color: rgba(0, 212, 170, 0.2);
}

.orbit-core {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 30px var(--accent), 0 0 60px var(--accent-dim);
  transition: transform var(--transition), box-shadow var(--transition);
}

.orbit:hover .orbit-core {
  box-shadow: 0 0 50px var(--accent), 0 0 80px var(--accent-dim);
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ─── Dimension main (content “layer” in front when scrolled) ─── */
.dimension-main {
  position: relative;
  transition: box-shadow 0.6s ease, transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

body.dimension-depth .dimension-main {
  box-shadow: 0 -20px 60px rgba(0, 0, 0, 0.4);
}

/* ─── Sections (Dimension-style titles with divider line) ─── */
.section {
  padding: 4rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: transform var(--transition);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  position: relative;
}

.section-title:hover {
  animation: glitch 0.3s cubic-bezier(.25, .46, .45, .94) both infinite;
  color: #fff;
}

@keyframes glitch {
  0% {
    transform: translate(0);
    text-shadow: -2px 0 var(--accent), 2px 0 rgba(255, 0, 0, 0.3);
  }

  25% {
    transform: translate(-2px, 2px);
  }

  50% {
    transform: translate(2px, -2px);
    text-shadow: 2px 0 var(--accent), -2px 0 rgba(255, 0, 0, 0.3);
  }

  75% {
    transform: translate(-2px, -2px);
  }

  100% {
    transform: translate(0);
  }
}

/* Dimension-style line under section heading */
.section-title::after {
  content: '';
  flex: 1;
  max-width: 120px;
  height: 2px;
  margin-left: 0.5rem;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0.6;
}

.section-title:hover .num {
  transform: scale(1.1);
}

.section-title .num {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent);
  opacity: 0.8;
  display: inline-block;
  transition: transform var(--transition);
}

.section-inner {
  max-width: 800px;
  perspective: 1200px;
}

.timeline,
.skills-grid {
  perspective: 1200px;
}

/* ─── Cards ─── */
.card,
.skill-card {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
  backdrop-filter: blur(16px);
  transition: border-color var(--transition), box-shadow var(--transition);
  overflow: hidden;
}

/* Flip cards need visible overflow so 3D flip isn't clipped */
.experience-flip.flip-card,
.skill-card.flip-card,
.education-flip-card {
  overflow: visible;
}

.card:hover,
.skill-card:hover {
  border-color: var(--accent-dim);
  box-shadow: 0 0 30px rgba(0, 242, 255, 0.1);
}

.card::before,
.skill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 242, 255, 0.05), transparent);
  transition: 0.5s;
}

.card:hover::before,
.skill-card:hover::before {
  left: 100%;
}

/* No shine overlay on flip cards so 3D flip is visible */
.experience-flip.card::before,
.skill-card.flip-card::before,
.education-flip-card::before {
  display: none;
}

/* ─── About ─── */
.about-text {
  font-size: 1.1rem;
  color: var(--text-muted);
  padding: 2rem;
  line-height: 1.8;
}

.about-meta {
  display: flex;
  gap: 2rem;
  padding: 0 2rem 2rem;
  flex-wrap: wrap;
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  transition: background var(--transition), transform var(--transition);
}

.meta-item:hover {
  background: rgba(0, 212, 170, 0.05);
  transform: translateX(4px);
}

.meta-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.meta-value {
  font-weight: 600;
  color: var(--accent);
}

/* ─── Timeline ─── */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.timeline-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.5rem;
  padding: 1.5rem 2rem;
  position: relative;
}

/* Experience flip: full-width inner (grid is inside .experience-flip-front) */
.timeline-item.experience-flip {
  display: block;
  padding: 0;
}

.timeline-item:hover .timeline-marker {
  transform: scale(1.3);
  box-shadow: 0 0 30px var(--accent-dim), 0 0 60px rgba(0, 212, 170, 0.2);
}

.timeline-marker {
  width: 12px;
  height: 12px;
  background: var(--accent);
  border-radius: 50%;
  margin-top: 0.4rem;
  box-shadow: 0 0 20px var(--accent-dim);
  transition: transform var(--transition), box-shadow var(--transition);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 0.25rem;
}

.timeline-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.timeline-content .company {
  font-size: 0.9rem;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.timeline-content p {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.timeline-content ul {
  margin-top: 0.5rem;
  padding-left: 1.25rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.timeline-content li {
  margin-bottom: 0.35rem;
}

/* ─── 3D flip + color change (Experience, Skills, Education) ─── */
.experience-flip,
.skill-card.flip-card,
.education-flip-card {
  perspective: 1500px;
  -webkit-perspective: 1500px;
  border: 1px solid var(--border);
  background: transparent;
  transition: all 0.5s ease;
  --card-depth: 10px;
  transform-style: preserve-3d;
  /* Ensure parent doesn't collapse 3D */
}

/* Fix for 3D flattening: Parents must not have filters/opacity < 1 when children have 3D */
.experience-flip.flip-card-hover,
.skill-card.flip-card.flip-card-hover,
.education-flip-card.flip-card-hover {
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  filter: none !important;
}

.experience-flip.flip-card-hover,
.skill-card.flip-card.flip-card-hover,
.education-flip-card.flip-card-hover {
  border-color: var(--accent) !important;
  box-shadow: 0 0 50px rgba(0, 242, 255, 0.3), inset 0 0 20px rgba(0, 242, 255, 0.1) !important;
}

/* Light Background for ALL card faces on hover */
.flip-card-hover .experience-flip-front,
.flip-card-hover .experience-flip-back,
.flip-card-hover .flip-card-front,
.flip-card-hover .flip-card-back {
  background: #e6faff !important;
  /* Solid Opaque Light Background */
  border-color: var(--accent) !important;
  opacity: 1 !important;
}

/* Dark text on light hover */
.flip-card-hover .experience-flip-back,
.flip-card-hover .flip-card-back,
.flip-card-hover .timeline-date,
.flip-card-hover .company,
.flip-card-hover h3,
.flip-card-hover h4,
.flip-card-hover p,
.flip-card-hover li {
  color: #0a0f14 !important;
  text-shadow: none !important;
}

.flip-card-hover .timeline-date {
  color: var(--accent) !important;
}

.experience-flip:hover,
.skill-card.flip-card:hover,
.education-flip-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 40px rgba(0, 242, 255, 0.2);
}

.experience-flip-inner,
.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  transform-style: preserve-3d;
}

/* Add box sides for thickness (Top/Bottom for vertical flip) */
.experience-flip-inner::before,
.flip-card-inner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--card-depth);
  background: var(--bg-elevated);
  border: 1px solid var(--accent-dim);
  transform: rotateX(90deg) translateZ(calc(var(--card-depth) * 0.5));
  transform-origin: top;
}

.experience-flip-inner::after,
.flip-card-inner::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: var(--card-depth);
  background: var(--bg-elevated);
  border: 1px solid var(--accent-dim);
  transform: rotateX(-90deg) translateZ(calc(var(--card-depth) * 0.5));
  transform-origin: bottom;
}

/* 3D coin flip — triggered by class so it’s reliable */
.experience-flip.flip-card-hover .experience-flip-inner,
.skill-card.flip-card.flip-card-hover .flip-card-inner,
.education-flip-card.flip-card-hover .flip-card-inner {
  transform: rotate3d(1, -1, 0, 180deg);
  -webkit-transform: rotate3d(1, -1, 0, 180deg);
}

.experience-flip:hover .experience-flip-inner,
.skill-card.flip-card:hover .flip-card-inner,
.education-flip-card:hover .flip-card-inner {
  transform: rotate3d(1, -1, 0, 180deg);
  -webkit-transform: rotate3d(1, -1, 0, 180deg);
}

/* Mid-flip shimmer */
.experience-flip:hover .experience-flip-inner::after,
.experience-flip.flip-card-hover .experience-flip-inner::after,
.flip-card:hover .flip-card-inner::after,
.flip-card.flip-card-hover .flip-card-inner::after {
  animation: coinShimmer 0.6s ease-in-out;
}

@keyframes coinShimmer {
  0% {
    opacity: 0;
  }

  50% {
    opacity: 1;
    filter: brightness(2) white-balance(10deg);
  }

  100% {
    opacity: 0;
  }
}

/* Experience: front gives height, back overlays */
.experience-flip-front {
  position: relative;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  display: grid;
  transform-style: preserve-3d;
  grid-template-columns: auto 1fr;
  gap: 1.5rem;
  padding: 1.5rem 2rem;
  align-items: start;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  transition: border-color 0.4s ease,
    background 0.4s ease;
  transform: rotate3d(0, 0, 0, 0deg) translateZ(calc(var(--card-depth) / 2));
  -webkit-transform: rotate3d(0, 0, 0, 0deg) translateZ(calc(var(--card-depth) / 2));
  pointer-events: auto;
}

/* HUD Corners for flip cards */
.experience-flip-front::before,
.experience-flip-back::before,
.flip-card-front::before,
.flip-card-back::before {
  content: '';
  position: absolute;
  top: 10px;
  left: 10px;
  width: 20px;
  height: 20px;
  border-top: 2px solid var(--accent);
  border-left: 2px solid var(--accent);
  opacity: 0.3;
  pointer-events: none;
}

.experience-flip-front::after,
.experience-flip-back::after,
.flip-card-front::after,
.flip-card-back::after {
  content: '';
  position: absolute;
  bottom: 10px;
  right: 10px;
  width: 20px;
  height: 20px;
  border-bottom: 2px solid var(--accent);
  border-right: 2px solid var(--accent);
  opacity: 0.3;
  pointer-events: none;
}

.experience-flip:hover .experience-flip-front,
.experience-flip.flip-card-hover .experience-flip-front {
  border-color: var(--accent);
  background: rgba(230, 250, 255, 0.95);
}

.experience-flip-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform: rotate3d(1, -1, 0, 180deg) translateZ(calc(var(--card-depth) / 2));
  -webkit-transform: rotate3d(1, -1, 0, 180deg) translateZ(calc(var(--card-depth) / 2));
  pointer-events: auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.5rem;
  padding: 2rem;
  border-radius: var(--radius-lg);
  background: rgba(230, 250, 255, 1);
  /* Solid Light Background */
  border: 1px solid var(--accent);
  color: #0a0f14;
  box-shadow: inset 0 0 40px rgba(0, 242, 255, 0.2);
}

.experience-flip-back .timeline-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
}

.experience-flip-back h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text);
}

.experience-flip-back .company {
  font-size: 0.9rem;
  color: rgba(0, 242, 255, 0.95);
}

.experience-flip-front .timeline-marker {
  margin-top: 0.4rem;
}

/* Skills flip: front and back */
.flip-card-front,
.flip-card-back {
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--radius-lg);
  transition: border-color 0.4s ease, background 0.4s ease;
}

.skill-card.flip-card .flip-card-front {
  position: relative;
  padding: 1.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  transform: translateZ(calc(var(--card-depth) / 2));
  transition: all 0.4s ease;
  overflow: hidden;
}

.skill-card.flip-card:hover .flip-card-front,
.skill-card.flip-card.flip-card-hover .flip-card-front {
  border-color: var(--accent);
  background: rgba(230, 250, 255, 0.95);
}

.skill-card.flip-card .flip-card-back {
  position: absolute;
  inset: 0;
  transform: rotate3d(1, 1, 0, 180deg) translateZ(calc(var(--card-depth) / 2));
  -webkit-transform: rotate3d(1, 1, 0, 180deg) translateZ(calc(var(--card-depth) / 2));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 2rem;
  background: rgba(230, 250, 255, 1);
  border: 1px solid var(--accent);
  box-shadow: inset 0 0 40px rgba(0, 242, 255, 0.2);
}

.skill-card.flip-card .flip-card-back .skill-icon {
  font-size: 2rem;
  color: var(--accent);
}

.skill-card.flip-card .flip-card-back h4 {
  font-size: 1.2rem;
  color: var(--text);
  text-align: center;
}

/* Education flip cards */
.education-flip-card {
  padding: 0;
}

.education-flip-card .flip-card-inner {
  min-height: 100px;
}

.education-flip-card .flip-card-front {
  position: relative;
  padding: 1.25rem 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transform: rotate3d(0, 0, 0, 0deg) translateZ(calc(var(--card-depth) / 2));
  -webkit-transform: rotate3d(0, 0, 0, 0deg) translateZ(calc(var(--card-depth) / 2));
  transition: all 0.4s ease;
}

.education-flip-card .flip-card-front h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.education-flip-card .flip-card-front .company {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.education-flip-card .flip-card-front .timeline-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
}

.education-flip-card:hover .flip-card-front,
.education-flip-card.flip-card-hover .flip-card-front {
  border-color: var(--accent);
  background: rgba(230, 250, 255, 0.95);
}

.education-flip-card .flip-card-back {
  position: absolute;
  inset: 0;
  transform: rotate3d(1, -1, 0, 180deg) translateZ(calc(var(--card-depth) / 2));
  -webkit-transform: rotate3d(1, -1, 0, 180deg) translateZ(calc(var(--card-depth) / 2));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 2rem;
  background: #e6faff;
  /* Solid Light Background */
  border: 1px solid var(--accent);
  border-radius: var(--radius-lg);
  box-shadow: inset 0 0 40px rgba(0, 242, 255, 0.2);
}

.education-flip-card .flip-card-back h3 {
  font-size: 1.1rem;
  color: var(--text);
  text-align: center;
}

.education-flip-card .flip-card-back .timeline-date {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
}

.education-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* ─── Skills ─── */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.skill-card {
  padding: 1.75rem;
}

.skill-card.flip-card {
  padding: 0;
}

.skill-card:hover .skill-icon {
  transform: scale(1.2) rotate(45deg);
  opacity: 1;
  color: var(--accent);
}

.skill-icon {
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 0.75rem;
  opacity: 0.8;
  transition: transform var(--transition), opacity var(--transition);
  display: inline-block;
}

.skill-card h4 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  transition: color var(--transition);
}

.skill-card:hover h4 {
  color: var(--accent);
}

.skill-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ─── Education ─── */
.education-card {
  padding: 2rem;
}

.edu-item {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border);
  transition: padding-left var(--transition), background var(--transition);
}

.edu-item:hover {
  padding-left: 0.75rem;
  background: rgba(0, 212, 170, 0.03);
}

.edu-item:last-child {
  border-bottom: none;
}

.edu-item h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.edu-item .company {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.edu-item .timeline-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
}

/* ─── Contact ─── */
.contact-card {
  padding: 2.5rem;
}

.contact-intro {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  line-height: 1.7;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.contact-link {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.contact-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 170, 0.08), transparent);
  transition: left 0.5s ease;
}

.contact-link:hover {
  border-color: var(--accent);
  background: rgba(0, 212, 170, 0.08);
  transform: translateX(4px);
  box-shadow: 0 4px 20px rgba(0, 212, 170, 0.1);
}

.contact-link:hover::before {
  left: 100%;
}

.contact-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.contact-value {
  font-weight: 500;
  color: var(--text);
}

.btn-wide {
  width: 100%;
}

.contact-address {
  cursor: default;
}

.contact-address:hover {
  border-color: var(--border);
  background: transparent;
  transform: none;
  box-shadow: none;
}

.contact-address:hover::before {
  left: -100%;
}

/* ─── Research ─── */
.research-content {
  padding: 2rem;
}

.research-content h4 {
  font-size: 1rem;
  font-weight: 600;
  margin: 1.25rem 0 0.5rem;
  color: var(--accent);
}

.research-content h4:first-child {
  margin-top: 0;
}

.research-content ul {
  padding-left: 1.25rem;
  margin-bottom: 0.5rem;
}

.research-content li {
  margin-bottom: 0.35rem;
  color: var(--text-muted);
}

.research-note {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-top: 1rem;
  line-height: 1.7;
}

/* ─── Footer (Dimension-style minimal with nav line) ─── */
.footer.dimension-footer {
  padding: 2.5rem 1.5rem;
  text-align: center;
  border-top: 1px solid var(--border);
  background: rgba(3, 3, 5, 0.6);
  transition: border-color var(--transition);
}

.footer.dimension-footer::before {
  content: '';
  display: block;
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  margin: 0 auto 1.5rem;
  opacity: 0.5;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.25rem 2rem;
  margin-bottom: 1.25rem;
}

.footer-nav a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-nav a:hover {
  color: var(--accent);
}

.footer:hover {
  border-top-color: rgba(0, 212, 170, 0.2);
}

.footer p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-note {
  margin-top: 0.5rem;
  font-size: 0.85rem !important;
  opacity: 0.8;
}

/* ─── Mobile Responsive ─── */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: rgba(5, 5, 8, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    border-bottom: 1px solid var(--border);
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .hero {
    flex-direction: column;
    text-align: center;
    padding-top: calc(var(--header-h) + 3rem);
  }

  .hero-content {
    order: 1;
  }

  .hero-visual {
    order: 0;
    flex: none;
  }

  .hero-cta {
    justify-content: center;
  }

  .scroll-indicator {
    justify-content: center;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    padding: 1.25rem;
  }

  .timeline-marker {
    position: absolute;
    top: 1.5rem;
    left: 1.5rem;
  }

  .timeline-content {
    padding-left: 1.5rem;
  }

  .experience-flip-front,
  .experience-flip-back {
    grid-template-columns: 1fr;
    padding: 1.25rem;
  }

  .experience-flip-front .timeline-marker {
    position: absolute;
    top: 1.5rem;
    left: 1.5rem;
  }

  .experience-flip-front .timeline-content {
    padding-left: 1.5rem;
  }

  .about-meta {
    flex-direction: column;
    gap: 1rem;
  }

  .contact-link {
    padding: 1.25rem;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.5rem;
  }

  .hero-cta {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .section {
    padding: 3rem 1rem;
  }
}

/* ─── Reduced motion ─── */
@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .load-banner {
    animation: none;
  }

  .card:hover {
    transform: none !important;
  }

  .name-3d.name-word {
    animation: none;
  }

  .experience-flip:hover .experience-flip-inner,
  .experience-flip.flip-card-hover .experience-flip-inner {
    transform: none;
  }

  body.dimension-depth .hero {
    transform: none;
    opacity: 1;
    filter: none;
    pointer-events: auto;
  }

  .skill-card.flip-card:hover .flip-card-inner,
  .skill-card.flip-card.flip-card-hover .flip-card-inner,
  .education-flip-card:hover .flip-card-inner,
  .education-flip-card.flip-card-hover .flip-card-inner {
    transform: none;
  }
}