/* ============================================
   PORTFOLIO – Karthikeyan A
   REDESIGN: Dark Premium with Neon Accents
   Typography: Outfit + Space Mono
   ============================================ */

/* ---------- CUSTOM PROPERTIES ---------- */
:root {
  --bg-deep: #0A0A0F;
  --bg-card: #12121A;
  --bg-card-hover: #1A1A25;
  --bg-alt: #0E0E16;
  --surface: #16161F;
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);

  --text-primary: #EAEAF0;
  --text-secondary: #8B8BA3;
  --text-muted: #5A5A72;

  --accent: #6C63FF;
  --accent-2: #00D4AA;
  --accent-3: #FF6B9D;
  --gradient: linear-gradient(135deg, #6C63FF, #00D4AA);
  --gradient-warm: linear-gradient(135deg, #6C63FF, #FF6B9D);
  --glow-accent: rgba(108, 99, 255, 0.4);
  --glow-teal: rgba(0, 212, 170, 0.3);

  --font-display: 'Outfit', sans-serif;
  --font-mono: 'Space Mono', monospace;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  --max-width: 1100px;
  --nav-height: 72px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 0.2s;
  --duration-normal: 0.45s;
  --duration-slow: 0.7s;
}

/* ---------- RESET ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-display);
  color: var(--text-primary);
  background: var(--bg-deep);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  cursor: default;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

/* ---------- CURSOR GLOW ---------- */
.cursor-glow {
  position: fixed;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--glow-accent) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  opacity: 0.12;
  transform: translate(-50%, -50%);
  transition: opacity 0.4s;
  will-change: left, top;
}

/* ---------- PARTICLE CANVAS ---------- */
#particleCanvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ---------- NAVBAR ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: all var(--duration-normal) var(--ease-out);
}

.navbar.scrolled {
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.logo-bracket {
  color: var(--accent);
}

.logo-slash {
  color: var(--accent-2);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.nav-link {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.55rem 1rem;
  border-radius: var(--radius-full);
  transition: all var(--duration-fast) var(--ease-out);
  position: relative;
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link.active {
  color: var(--text-primary);
  background: rgba(108, 99, 255, 0.1);
}

.nav-link.cta-link {
  background: var(--gradient);
  color: white !important;
  font-weight: 600;
  padding: 0.55rem 1.3rem;
}

.nav-link.cta-link:hover {
  box-shadow: 0 4px 20px var(--glow-accent);
  transform: translateY(-1px);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  z-index: 1300;
  position: relative;
}

.hamburger-line {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--duration-normal) var(--ease-out);
  transform-origin: center;
}

.nav-toggle.active .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5.5px, 5.5px);
}

.nav-toggle.active .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav-toggle.active .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(5.5px, -5.5px);
}

/* ---------- HERO ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: calc(var(--nav-height) + var(--space-3xl)) var(--space-xl) var(--space-3xl);
  overflow: hidden;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(108, 99, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(108, 99, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 20%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 20%, transparent 100%);
}

.hero-content {
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--accent-2);
  background: rgba(0, 212, 170, 0.07);
  border: 1px solid rgba(0, 212, 170, 0.15);
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-2xl);
  letter-spacing: 0.03em;
}

.badge-pulse {
  width: 8px;
  height: 8px;
  background: var(--accent-2);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
  box-shadow: 0 0 8px var(--glow-teal);
}

@keyframes pulse {

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

  50% {
    opacity: 0.4;
    transform: scale(0.7);
  }
}

.hero-greeting {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--accent);
  margin-bottom: var(--space-md);
  letter-spacing: 0.05em;
}

.hero-name {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin-bottom: var(--space-xl);
  min-height: 1.2em;
}

.typewriter-text {
  display: inline;
}

.type-cursor {
  display: inline-block;
  color: var(--accent);
  font-weight: 300;
  animation: blink-cursor 0.75s step-end infinite;
  margin-left: 2px;
}

@keyframes blink-cursor {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0;
  }
}

.btn-resume {
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
}

.name-outline {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.name-accent {
  -webkit-text-fill-color: var(--accent-2);
}

.hero-tagline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
  margin-bottom: var(--space-lg);
}

.tag-item {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.tag-icon {
  font-size: 1rem;
}

.tag-sep {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--text-muted);
}

.hero-location {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: var(--space-2xl);
}

.hero-location svg {
  color: var(--accent);
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.85rem 1.8rem;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-spring);
  position: relative;
  overflow: hidden;
}

.btn-glow {
  background: var(--gradient);
  color: white;
}

.btn-glow:hover {
  box-shadow: 0 6px 30px var(--glow-accent), 0 0 60px rgba(108, 99, 255, 0.15);
  transform: translateY(-3px);
}

.btn-glow::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), transparent);
  opacity: 0;
  transition: opacity var(--duration-fast);
}

.btn-glow:hover::after {
  opacity: 1;
}

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-hover);
}

.btn-ghost:hover {
  border-color: var(--accent);
  background: rgba(108, 99, 255, 0.05);
  transform: translateY(-3px);
  box-shadow: 0 6px 30px rgba(108, 99, 255, 0.08);
}

/* ---------- SCROLL INDICATOR ---------- */
.scroll-indicator {
  position: absolute;
  bottom: var(--space-2xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
}

.scroll-line {
  width: 1px;
  height: 50px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {

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

  50% {
    opacity: 0.3;
    transform: scaleY(0.6);
  }
}

.scroll-indicator span {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text-muted);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* ---------- SECTIONS ---------- */
.section {
  padding: var(--space-4xl) 0;
  position: relative;
  z-index: 1;
}

.section-alt {
  background: var(--bg-alt);
}

.section-header {
  margin-bottom: var(--space-3xl);
}

.section-header.center {
  text-align: center;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: var(--space-sm);
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.title-dot {
  color: var(--accent-2);
}

.section-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 480px;
  margin: var(--space-md) auto 0;
  line-height: 1.7;
}

/* ---------- ABOUT ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

.photo-card {
  position: relative;
  width: 250px;
  height: 300px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.photo-placeholder {
  width: 100%;
  height: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  z-index: 1;
}

.profile-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
  transition: transform var(--duration-normal) var(--ease-out);
}

.photo-card:hover .profile-img {
  transform: scale(1.05);
}

.photo-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(108, 99, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

.photo-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.photo-border {
  position: absolute;
  inset: -2px;
  border-radius: calc(var(--radius-lg) + 2px);
  background: var(--gradient);
  z-index: 0;
  opacity: 0.5;
  transition: opacity var(--duration-normal);
}

.photo-card:hover .photo-border {
  opacity: 1;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-lg) var(--space-sm);
  text-align: center;
  transition: all var(--duration-normal) var(--ease-out);
}

.stat-card:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 20px rgba(108, 99, 255, 0.1);
  transform: translateY(-2px);
}

.stat-num {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 4px;
}

.stat-text {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

.about-text-col p {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  line-height: 1.8;
}

.about-text-col .about-lead {
  font-size: 1.1rem;
  color: var(--text-primary);
}

.about-text-col strong {
  color: var(--text-primary);
  font-weight: 600;
}

.inline-link {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(108, 99, 255, 0.3);
  transition: all var(--duration-fast);
}

.inline-link:hover {
  text-decoration-color: var(--accent);
  text-shadow: 0 0 12px var(--glow-accent);
}

.about-highlights {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-top: var(--space-xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border);
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.hl-icon {
  font-size: 1.1rem;
}

/* ---------- SKILLS ---------- */
.skills-category {
  margin-bottom: var(--space-3xl);
}

.skills-category:last-child {
  margin-bottom: 0;
}

.skills-cat-title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border);
}

.skills-cat-title svg {
  color: var(--accent);
}

.skills-icon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: var(--space-md);
}

.skill-tile {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-lg) var(--space-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  transition: all var(--duration-normal) var(--ease-out);
  cursor: default;
}

.skill-tile:hover {
  border-color: rgba(108, 99, 255, 0.4);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(108, 99, 255, 0.1);
  background: rgba(108, 99, 255, 0.04);
}

.tile-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tile-icon svg {
  width: 100%;
  height: 100%;
}

.tile-icon-text {
  font-size: 2rem;
  line-height: 1;
}

.skill-tile span {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-align: center;
  letter-spacing: 0.02em;
}

.skill-tile:hover span {
  color: var(--text-primary);
}

@media (max-width: 480px) {
  .skills-icon-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ---------- LEETCODE ---------- */
.lc-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.lc-chart-card {
  display: flex;
  justify-content: center;
}

.lc-donut-wrap {
  position: relative;
  width: 200px;
  height: 200px;
}

.lc-donut {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.lc-donut circle {
  fill: none;
  stroke-width: 12;
  stroke-linecap: round;
  transition: stroke-dashoffset 1.5s var(--ease-out);
}

.lc-donut-bg {
  stroke: rgba(255, 255, 255, 0.04);
}

.lc-donut-easy {
  stroke: #00D4AA;
}

.lc-donut-medium {
  stroke: #FFC107;
}

.lc-donut-hard {
  stroke: #FF6B6B;
}

.lc-donut-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.lc-total-num {
  font-size: 2.8rem;
  font-weight: 900;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.lc-total-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-top: 2px;
}

.lc-stats-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.lc-stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.lc-stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: all var(--duration-normal) var(--ease-out);
}

.lc-stat-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.lc-stat-top {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.lc-diff-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.lc-dot-easy {
  background: #00D4AA;
  box-shadow: 0 0 8px rgba(0, 212, 170, 0.4);
}

.lc-dot-medium {
  background: #FFC107;
  box-shadow: 0 0 8px rgba(255, 193, 7, 0.4);
}

.lc-dot-hard {
  background: #FF6B6B;
  box-shadow: 0 0 8px rgba(255, 107, 107, 0.4);
}

.lc-diff-name {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.lc-stat-val {
  display: block;
  font-size: 1.8rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.lc-easy .lc-stat-val {
  color: #00D4AA;
}

.lc-medium .lc-stat-val {
  color: #FFC107;
}

.lc-hard .lc-stat-val {
  color: #FF6B6B;
}

.lc-stat-bar {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 2px;
  overflow: hidden;
}

.lc-bar-fill {
  height: 100%;
  width: 0;
  border-radius: 2px;
  transition: width 1.4s var(--ease-out);
}

.lc-bar-easy {
  background: #00D4AA;
}

.lc-bar-medium {
  background: #FFC107;
}

.lc-bar-hard {
  background: #FF6B6B;
}

.lc-profile-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.85rem 1.8rem;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-spring);
  align-self: flex-start;
}

.lc-profile-btn:hover {
  border-color: var(--accent);
  box-shadow: 0 6px 24px var(--glow-accent);
  transform: translateY(-2px);
}

.lc-profile-btn svg {
  color: #FFA116;
}

.lc-btn-arrow {
  margin-left: var(--space-xs);
  transition: transform var(--duration-fast);
}

.lc-profile-btn:hover .lc-btn-arrow {
  transform: translateX(4px);
}

@media (max-width: 768px) {
  .lc-layout {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .lc-chart-card {
    justify-content: center;
  }

  .lc-stat-row {
    grid-template-columns: repeat(3, 1fr);
  }

  .lc-profile-btn {
    align-self: center;
  }
}

@media (max-width: 480px) {
  .lc-donut-wrap {
    width: 160px;
    height: 160px;
  }

  .lc-total-num {
    font-size: 2rem;
  }

  .lc-stat-val {
    font-size: 1.4rem;
  }
}

/* ---------- PROJECT ---------- */
.project-showcase {
  max-width: 700px;
  margin: 0 auto;
}

.project-card-premium {
  position: relative;
  border-radius: calc(var(--radius-lg) + 2px);
  padding: 2px;
  background: var(--gradient);
  transition: box-shadow var(--duration-normal) var(--ease-out);
}

.project-card-premium:hover {
  box-shadow: 0 8px 40px rgba(108, 99, 255, 0.2), 0 0 80px rgba(108, 99, 255, 0.06);
}

.project-inner {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
}

.project-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
}

.project-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-3);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.project-badge svg {
  color: var(--accent-3);
}

.project-link-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: all var(--duration-fast);
}

.project-link-icon:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-2px);
}

.project-name {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.project-sub {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: var(--space-lg);
}

.project-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-xl);
}

.project-features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.feat {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.feat-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 6px var(--glow-teal);
}

.project-stack {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.stack-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent);
  border: 1px solid rgba(108, 99, 255, 0.2);
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-sm);
  letter-spacing: 0.03em;
}

/* ---------- CONTACT ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl) var(--space-lg);
  text-align: center;
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.contact-card:hover {
  border-color: rgba(108, 99, 255, 0.3);
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(108, 99, 255, 0.12);
}

.contact-card:hover .contact-icon-ring {
  border-color: var(--accent);
  box-shadow: 0 0 24px var(--glow-accent);
  color: var(--accent);
}

.contact-card:hover .card-arrow {
  opacity: 1;
  transform: translateX(0);
  color: var(--accent);
}

.contact-icon-ring {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1.5px solid var(--border-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
  transition: all var(--duration-normal) var(--ease-spring);
}

.contact-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.contact-card p {
  font-size: 0.78rem;
  color: var(--text-muted);
  word-break: break-all;
}

.card-arrow {
  font-size: 1.3rem;
  margin-top: var(--space-md);
  opacity: 0;
  transform: translateX(-8px);
  transition: all var(--duration-normal) var(--ease-spring);
  color: var(--text-muted);
}

/* ---------- FOOTER ---------- */
.footer {
  padding: var(--space-2xl) 0;
  position: relative;
  z-index: 1;
}

.footer-inner {}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-logo {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
}

.footer-socials {
  display: flex;
  gap: var(--space-sm);
}

.footer-socials a {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: all var(--duration-fast) var(--ease-out);
}

.footer-socials a:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(108, 99, 255, 0.15);
}

.footer-line {
  height: 1px;
  background: var(--border);
  margin: var(--space-lg) 0;
}

.footer-copy {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-align: center;
}

.footer-copy strong {
  color: var(--text-secondary);
  font-weight: 600;
}

/* ---------- SCROLL REVEAL ---------- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 {
  transition-delay: 0.1s;
}

.reveal-delay-2 {
  transition-delay: 0.2s;
}

.reveal-delay-3 {
  transition-delay: 0.3s;
}

.reveal-delay-4 {
  transition-delay: 0.4s;
}

.reveal-delay-5 {
  transition-delay: 0.5s;
}

/* ---------- NAV OVERLAY (MOBILE) ---------- */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 15, 0.6);
  backdrop-filter: blur(6px);
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal);
  z-index: 999;
}

.nav-overlay.visible {
  opacity: 1;
  visibility: visible;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 992px) {
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .skills-grid .skill-card:last-child {
    grid-column: 1 / -1;
  }

  .contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-deep);
    flex-direction: column;
    justify-content: center;
    padding: var(--space-2xl);
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.8);
    transition: right var(--duration-normal) var(--ease-out);
    z-index: 1200;
    gap: var(--space-sm);
    border-left: 1px solid var(--border);
  }

  .nav-links.open {
    right: 0;
  }

  .nav-link {
    font-size: 1.05rem;
    padding: var(--space-md) var(--space-lg);
    width: 100%;
    text-align: left;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .about-photo-col {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .about-stats {
    width: 100%;
    max-width: 300px;
  }

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

  .skills-grid .skill-card:last-child {
    grid-column: auto;
  }

  .hero-tagline {
    gap: var(--space-md);
  }

  .project-inner {
    padding: var(--space-xl);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-lg);
  }

  .hero-name {
    font-size: 2.5rem;
  }

  .hero-tagline {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .tag-sep {
    display: none;
  }

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

  .btn {
    width: 100%;
    justify-content: center;
  }

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

  .about-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xs);
  }

  .stat-num {
    font-size: 1.5rem;
  }

  .stat-text {
    font-size: 0.6rem;
  }

  .section {
    padding: var(--space-3xl) 0;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .footer-top {
    flex-direction: column;
    gap: var(--space-md);
  }

  .photo-card {
    width: 200px;
    height: 250px;
  }
}

/* ---------- SMOOTH PAGE LOAD ---------- */
body {
  animation: pageLoad 0.6s ease-out;
}

@keyframes pageLoad {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}