/* ============================================================
   PORTFOLIO — MAIN CSS
   Deep Space Glassmorphism Theme
   ============================================================ */

/* ============================================================
   1. CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================================ */
:root {
  /* Colors */
  --bg-primary:      #04040c;
  --bg-secondary:    #090918;
  --purple:          #7c3aed;
  --purple-mid:      #8b5cf6;
  --purple-light:    #a78bfa;
  --cyan:            #06b6d4;
  --cyan-light:      #67e8f9;
  --amber:           #f59e0b;
  --amber-light:     #fcd34d;
  --pink:            #ec4899;
  --pink-light:      #f472b6;
  --green:           #10b981;
  --green-light:     #6ee7b7;

  /* Text */
  --text-primary:   #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted:     #64748b;

  /* Glass Tokens */
  --glass-bg:           rgba(255, 255, 255, 0.045);
  --glass-bg-hover:     rgba(255, 255, 255, 0.085);
  --glass-border:       rgba(255, 255, 255, 0.12);
  --glass-border-light: rgba(255, 255, 255, 0.25);
  --glass-shadow:       0 8px 32px 0 rgba(0, 0, 0, 0.37), inset 0 1px 0 0 rgba(255, 255, 255, 0.2), inset 0 -1px 0 0 rgba(0, 0, 0, 0.25);
  --glass-shadow-hover: 0 20px 50px 0 rgba(0, 0, 0, 0.5), inset 0 1px 0 0 rgba(255, 255, 255, 0.4), 0 0 30px rgba(124, 58, 237, 0.25);

  /* Glows */
  --glow-purple: 0 0 40px rgba(124, 58, 237, 0.4);
  --glow-cyan:   0 0 40px rgba(6, 182, 212, 0.4);
  --glow-amber:  0 0 40px rgba(245, 158, 11, 0.4);

  /* Typography */
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body:    'Inter', sans-serif;
  --font-mono:    'Fira Code', monospace;

  /* Spacing */
  --section-padding: 110px 0;
  --container-width: 1200px;

  /* Transitions */
  --ease:      cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out:  cubic-bezier(0, 0, 0.2, 1);
  --t-fast:    0.15s;
  --t-base:    0.3s;
  --t-slow:    0.6s;

  /* Border radius */
  --r-sm:  8px;
  --r-md:  16px;
  --r-lg:  24px;
  --r-xl:  32px;
  --r-full:9999px;
}

/* ============================================================
   2. RESET & BASE
   ============================================================ */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a   { color: inherit; text-decoration: none; }
ul  { list-style: none; }
img { max-width: 100%; display: block; }

button {
  font-family: inherit;
  cursor: pointer;
}

/* ============================================================
   3. 3D WEBGL & STARFIELD CANVASES
   ============================================================ */
#webgl-3d-scene,
#starfield {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* ============================================================
   4. AMBIENT ORBS
   ============================================================ */
.orb {
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  animation: float var(--dur, 8s) ease-in-out infinite var(--delay, 0s);
}

.orb-1 {
  --dur: 9s;
  --delay: 0s;
  width: 550px;
  height: 550px;
  top: -150px;
  right: -150px;
  background: radial-gradient(circle at 40% 40%,
    rgba(124, 58, 237, 0.3) 0%,
    rgba(139, 92, 246, 0.12) 40%,
    transparent 70%);
  filter: blur(70px);
}

.orb-2 {
  --dur: 11s;
  --delay: -4s;
  width: 450px;
  height: 450px;
  bottom: 5%;
  left: -120px;
  background: radial-gradient(circle at 60% 60%,
    rgba(6, 182, 212, 0.25) 0%,
    rgba(103, 232, 249, 0.08) 40%,
    transparent 70%);
  filter: blur(70px);
}

.orb-3 {
  --dur: 13s;
  --delay: -7s;
  width: 350px;
  height: 350px;
  top: 50%;
  right: 15%;
  background: radial-gradient(circle at 50% 50%,
    rgba(236, 72, 153, 0.22) 0%,
    transparent 65%);
  filter: blur(60px);
}

/* ============================================================
   5. UTILITY CLASSES
   ============================================================ */

/* Gradient text */
.gradient-text {
  background: linear-gradient(
    135deg,
    var(--purple-light) 0%,
    var(--cyan-light)   50%,
    var(--amber-light)  100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% auto;
  animation: gradient-shift 5s ease infinite;
}

/* Glass morphism base */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(24px) saturate(190%);
  -webkit-backdrop-filter: blur(24px) saturate(190%);
  border: 1px solid var(--glass-border);
  border-top: 1px solid var(--glass-border-light);
  border-left: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: var(--glass-shadow);
  border-radius: var(--r-md);
  position: relative;
  overflow: hidden;
  transition: transform var(--t-base) var(--ease),
              box-shadow var(--t-base) var(--ease),
              border-color var(--t-base) var(--ease),
              background var(--t-base) var(--ease);
}

.glass::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    45deg,
    transparent 45%,
    rgba(255, 255, 255, 0.08) 50%,
    transparent 55%
  );
  transform: rotate(30deg) translateY(-100%);
  transition: transform 0.8s ease-out;
  pointer-events: none;
  z-index: 3;
}

.glass:hover::after {
  transform: rotate(30deg) translateY(100%);
}

.glass:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-light);
  box-shadow: var(--glass-shadow-hover);
}

/* Layout */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 28px;
  position: relative;
  z-index: 2;
}

.section {
  padding: var(--section-padding);
  position: relative;
  z-index: 2;
}

/* Section header */
.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 14px;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.1;
}

/* ============================================================
   6. SCROLL-REVEAL
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(44px);
  transition:
    opacity  var(--t-slow) var(--ease-out),
    transform var(--t-slow) var(--ease-out);
}

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

/* ============================================================
   7. NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 18px 0;
  transition:
    background var(--t-base) var(--ease),
    border-color var(--t-base) var(--ease),
    padding var(--t-base) var(--ease);
}

.navbar.scrolled {
  background: rgba(4, 4, 12, 0.75);
  backdrop-filter: blur(28px) saturate(200%);
  -webkit-backdrop-filter: blur(28px) saturate(200%);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: 0 10px 30px 0 rgba(0, 0, 0, 0.5), inset 0 1px 0 0 rgba(255, 255, 255, 0.15);
  padding: 10px 0;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 28px;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  position: relative;
  padding: 8px 18px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--r-full);
  transition: color var(--t-base) var(--ease);
  overflow: hidden;
}

.nav-link::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--r-full);
  background: linear-gradient(135deg, var(--purple), var(--cyan));
  opacity: 0;
  transition: opacity var(--t-base) var(--ease);
  z-index: -1;
}

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

.nav-link:hover::before,
.nav-link.active::before {
  opacity: 0.18;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 6px;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--t-base) var(--ease), opacity var(--t-base) var(--ease);
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ============================================================
   8. HERO SECTION
   ============================================================ */
.hero-section {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 120px 28px 80px;
}

/* Hero Status Badge */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  margin-bottom: 28px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--green-light);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-top: 1px solid rgba(110, 231, 183, 0.5);
  background: rgba(16, 185, 129, 0.08);
  border-radius: var(--r-full);
  letter-spacing: 0.5px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.15);
  opacity: 0;
  animation: fadeInUp 0.8s var(--ease-out) forwards 0.2s;
}

.status-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 10px var(--green);
  position: relative;
  display: inline-block;
}

.status-pulse::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1.5px solid var(--green);
  animation: pulse-ring 1.8s cubic-bezier(0.215, 0.61, 0.355, 1) infinite;
}

.badge-icon { font-size: 1.05rem; }

/* Hero text */
.hero-content { max-width: 840px; }

.hero-greeting {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--cyan);
  letter-spacing: 2px;
  margin-bottom: 10px;
  opacity: 0;
  animation: fadeInUp 0.8s var(--ease-out) forwards 0.3s;
}

.hero-name {
  font-family: var(--font-heading);
  font-size: clamp(3.5rem, 11vw, 8rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -2px;
  margin-bottom: 28px;
  opacity: 0;
  animation: fadeInUp 0.8s var(--ease-out) forwards 0.5s;
}

.typewriter-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-family: var(--font-heading);
  font-size: clamp(1.1rem, 3vw, 1.75rem);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 32px;
  min-height: 2.4rem;
  opacity: 0;
  animation: fadeInUp 0.8s var(--ease-out) forwards 0.7s;
}

.typewriter-text {
  color: var(--purple-light);
  font-weight: 600;
}

.typewriter-cursor {
  color: var(--cyan);
  animation: blink 1s step-end infinite;
  font-weight: 200;
  font-size: 1.2em;
  margin-left: 2px;
}

.hero-bio {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 44px;
  line-height: 1.8;
  opacity: 0;
  animation: fadeInUp 0.8s var(--ease-out) forwards 0.9s;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeInUp 0.8s var(--ease-out) forwards 1.1s;
}

/* 3D spinning rings decoration */
.hero-orb-ring {
  position: absolute;
  width: 360px;
  height: 360px;
  right: 8%;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
}

.ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid transparent;
  top: 50%;
  left: 50%;
  transform-origin: center;
}

.ring-1 {
  width: 320px;
  height: 320px;
  margin: -160px 0 0 -160px;
  border-color: rgba(124, 58, 237, 0.2);
  animation: ring-spin 12s linear infinite;
  box-shadow: 0 0 20px rgba(124, 58, 237, 0.1) inset;
}

.ring-2 {
  width: 240px;
  height: 240px;
  margin: -120px 0 0 -120px;
  border-color: rgba(6, 182, 212, 0.25);
  animation: ring-spin 8s linear infinite reverse;
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.1) inset;
}

.ring-3 {
  width: 160px;
  height: 160px;
  margin: -80px 0 0 -80px;
  border-color: rgba(236, 72, 153, 0.3);
  animation: ring-spin 5s linear infinite;
  box-shadow: 0 0 20px rgba(236, 72, 153, 0.1) inset;
}

.ring::after {
  content: '';
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  top: -4px;
  left: 50%;
  margin-left: -4px;
}

.ring-1::after { background: var(--purple-light); box-shadow: 0 0 12px var(--purple); }
.ring-2::after { background: var(--cyan-light);   box-shadow: 0 0 12px var(--cyan); }
.ring-3::after { background: var(--pink-light);   box-shadow: 0 0 12px var(--pink); }

/* Scroll indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
  font-size: 0.7rem;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  opacity: 0;
  animation: fadeIn 1s var(--ease-out) forwards 2s, floatY 2.5s ease-in-out infinite 2.5s;
}

.scroll-mouse {
  width: 24px;
  height: 40px;
  border: 1.5px solid rgba(255,255,255,0.15);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 7px;
}

.scroll-wheel {
  width: 3px;
  height: 8px;
  background: var(--cyan);
  border-radius: 3px;
  animation: scrollWheel 2.2s ease infinite;
}

/* ============================================================
   9. BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 30px;
  border-radius: var(--r-full);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition:
    transform var(--t-fast) var(--ease),
    box-shadow var(--t-base) var(--ease),
    background var(--t-base) var(--ease);
  position: relative;
  overflow: hidden;
  text-decoration: none;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: background var(--t-fast) var(--ease);
}

.btn:hover::after {
  background: rgba(255,255,255,0.08);
}

.btn-primary {
  background: linear-gradient(135deg, var(--purple) 0%, var(--cyan) 100%);
  color: #fff;
  box-shadow: 0 0 0 0 rgba(124,58,237,0);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: var(--glow-purple), 0 16px 40px rgba(124,58,237,0.4);
}

.btn-primary:active { transform: translateY(-1px); }

.btn-secondary {
  background: var(--glass-bg);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
}

.btn-secondary:hover {
  border-color: rgba(124, 58, 237, 0.4);
  box-shadow: var(--glow-purple);
  transform: translateY(-3px) scale(1.02);
}

.w-full { width: 100%; }

/* ============================================================
   10. ABOUT SECTION
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 28px;
  align-items: start;
}

/* Profile card */
.about-card {
  padding: 44px 32px;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: border-color var(--t-base) var(--ease);
}

.about-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--purple), var(--cyan));
  opacity: 0.6;
}

.about-avatar {
  display: flex;
  justify-content: center;
  margin-bottom: 24px;
}

.avatar-container {
  position: relative;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.avatar-ring {
  position: absolute;
  inset: -5px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--purple-light), var(--cyan-light), var(--pink-light));
  background-size: 200% 200%;
  animation: gradient-shift 4s ease infinite;
  box-shadow: 0 0 25px rgba(124, 58, 237, 0.45);
  z-index: 1;
}

.avatar-img {
  position: relative;
  z-index: 2;
  width: 140px;
  height: 140px;
  max-width: 140px;
  max-height: 140px;
  border-radius: 50%;
  object-fit: cover;
  object-position: top center;
  border: 3px solid #0f121d;
  background: var(--bg-secondary);
  transition: transform var(--t-fast) var(--ease), box-shadow var(--t-base) var(--ease);
}

.avatar-container:hover .avatar-img {
  transform: scale(1.04);
}


.about-name {
  font-family: var(--font-heading);
  font-size: 1.55rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.about-role {
  color: var(--cyan);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.about-divider {
  width: 50px;
  height: 2px;
  background: linear-gradient(90deg, var(--purple), var(--cyan));
  margin: 0 auto 22px;
  border-radius: var(--r-full);
}

.about-bio {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.75;
  margin-bottom: 28px;
}

.about-social {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.social-btn {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  transition:
    color     var(--t-base) var(--ease),
    border-color var(--t-base) var(--ease),
    box-shadow var(--t-base) var(--ease),
    transform  var(--t-fast) var(--ease);
}

.social-btn:hover {
  color: var(--text-primary);
  border-color: var(--purple-light);
  box-shadow: var(--glow-purple);
  transform: translateY(-4px);
}

/* Stats grid */
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}

.stat-card {
  padding: 28px 20px;
  text-align: center;
  transition:
    border-color var(--t-base) var(--ease),
    box-shadow   var(--t-base) var(--ease),
    transform    var(--t-fast) var(--ease);
}

.stat-card:hover {
  border-color: rgba(124, 58, 237, 0.35);
  box-shadow: var(--glow-purple);
  transform: translateY(-3px);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1;
  display: inline;
}

.stat-suffix {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--purple-light), var(--cyan-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-top: 6px;
}

/* Highlight items */
.about-highlights {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 16px 20px;
  transition:
    border-color var(--t-base) var(--ease),
    transform    var(--t-base) var(--ease);
}

.highlight-item:hover {
  border-color: rgba(6, 182, 212, 0.3);
  transform: translateX(10px);
}

.highlight-icon { font-size: 1.6rem; flex-shrink: 0; }

.highlight-item h4 {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.highlight-item p {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ============================================================
   11. SKILLS SECTION
   ============================================================ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.skill-category {
  padding: 28px;
  transition:
    border-color var(--t-base) var(--ease),
    box-shadow   var(--t-base) var(--ease),
    transform    var(--t-fast) var(--ease);
}

.skill-category:hover {
  border-color: rgba(124, 58, 237, 0.3);
  box-shadow: var(--glow-purple);
  transform: translateY(-6px);
}

.skill-category-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.skill-icon { font-size: 1.5rem; }

.skill-category-header h3 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-tag {
  padding: 5px 14px;
  background: rgba(124, 58, 237, 0.09);
  border: 1px solid rgba(124, 58, 237, 0.18);
  border-radius: var(--r-full);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--purple-light);
  cursor: default;
  transition:
    background    var(--t-fast) var(--ease),
    border-color  var(--t-fast) var(--ease),
    box-shadow    var(--t-fast) var(--ease),
    transform     var(--t-fast) var(--ease);
}

.skill-tag:hover {
  background: rgba(124, 58, 237, 0.2);
  border-color: var(--purple-light);
  box-shadow: 0 0 12px rgba(124, 58, 237, 0.25);
  transform: scale(1.07);
}

/* ============================================================
   12. PROJECTS SECTION
   ============================================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.project-card {
  padding: 32px;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition:
    border-color var(--t-base) var(--ease),
    box-shadow   var(--t-base) var(--ease);
  transform-style: preserve-3d;
  will-change: transform;
}

/* Colored glow blobs per card */
.project-glow {
  position: absolute;
  top: -60px;
  right: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  pointer-events: none;
  transition: opacity var(--t-base) var(--ease);
  opacity: 0.6;
}

.project-glow-purple { background: radial-gradient(circle, rgba(124, 58, 237, 0.2) 0%, transparent 70%); }
.project-glow-cyan   { background: radial-gradient(circle, rgba(6, 182, 212, 0.2) 0%, transparent 70%); }
.project-glow-pink   { background: radial-gradient(circle, rgba(236, 72, 153, 0.2) 0%, transparent 70%); }

.project-card:hover .project-glow { opacity: 1; }
.project-card:hover { border-color: rgba(124, 58, 237, 0.25); }

/* Project number */
.project-number {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 3px;
  color: var(--text-muted);
  margin-bottom: 20px;
  text-transform: uppercase;
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
}

.project-icon { font-size: 2.2rem; }

.project-links { display: flex; gap: 8px; }

.project-link {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition:
    color        var(--t-base) var(--ease),
    border-color var(--t-base) var(--ease),
    box-shadow   var(--t-base) var(--ease),
    transform    var(--t-fast) var(--ease);
}

.project-link:hover {
  color: var(--text-primary);
  border-color: var(--purple-light);
  box-shadow: var(--glow-purple);
  transform: scale(1.1);
}

.project-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.project-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 20px;
  flex: 1;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}

.tech-badge {
  padding: 4px 10px;
  background: rgba(6, 182, 212, 0.08);
  border: 1px solid rgba(6, 182, 212, 0.18);
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--cyan-light);
  transition: background var(--t-fast) var(--ease);
}

.tech-badge:hover {
  background: rgba(6, 182, 212, 0.18);
}

.project-footer {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  border-top: 1px solid var(--glass-border);
  padding-top: 16px;
  margin-top: auto;
}

.project-metric {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* See More Projects button row */
.projects-more {
  margin-top: 48px;
  display: flex;
  justify-content: center;
}

.btn-see-more {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: var(--r-full);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  position: relative;
  /* Gradient border via pseudo-element */
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  border: 1px solid transparent;
  background-clip: padding-box;
  transition:
    transform   var(--t-fast) var(--ease),
    box-shadow  var(--t-base) var(--ease),
    background  var(--t-base) var(--ease);
  overflow: hidden;
}

/* Gradient border glow */
.btn-see-more::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--r-full);
  padding: 1px;
  background: linear-gradient(135deg, var(--purple), var(--cyan), var(--purple));
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  background-size: 200% auto;
  animation: gradient-shift 4s ease infinite;
}

/* Shimmer on hover */
.btn-see-more::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--r-full);
  background: rgba(255,255,255,0);
  transition: background var(--t-fast) var(--ease);
}

.btn-see-more:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow:
    var(--glow-purple),
    0 16px 40px rgba(124, 58, 237, 0.35);
  background: rgba(124, 58, 237, 0.08);
}

.btn-see-more:hover::after {
  background: rgba(255,255,255,0.05);
}

.btn-see-more:active {
  transform: translateY(-1px) scale(1.01);
}

/* ============================================================
   13. HACKATHONS TIMELINE
   ============================================================ */
.timeline {
  position: relative;
  max-width: 820px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 30px;
  bottom: 30px;
  width: 2px;
  background: linear-gradient(
    to bottom,
    var(--amber) 0%,
    var(--purple) 40%,
    var(--cyan) 70%,
    transparent 100%
  );
  border-radius: var(--r-full);
}

.timeline-item {
  display: flex;
  gap: 36px;
  margin-bottom: 48px;
  padding-left: 68px;
  position: relative;
}

.timeline-node {
  position: absolute;
  left: 0;
  top: 28px;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.node-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid var(--purple);
  animation: pulse-ring 2.5s ease-in-out infinite;
}

.featured .node-ring {
  border-color: var(--amber);
  animation: pulse-ring-amber 2.5s ease-in-out infinite;
}

.node-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--purple), var(--cyan));
  z-index: 1;
}

.featured .node-dot {
  background: linear-gradient(135deg, var(--amber), var(--pink));
}

.timeline-content {
  flex: 1;
  padding: 28px 32px;
  transition:
    border-color var(--t-base) var(--ease),
    transform    var(--t-base) var(--ease),
    box-shadow   var(--t-base) var(--ease);
}

.timeline-content:hover {
  transform: translateX(6px);
  border-color: rgba(124, 58, 237, 0.3);
}

.featured .timeline-content {
  border-color: rgba(245, 158, 11, 0.2);
  background: rgba(245, 158, 11, 0.03);
  position: relative;
  overflow: hidden;
}

.featured .timeline-content::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--amber), var(--pink));
  opacity: 0.7;
}

.featured .timeline-content:hover {
  border-color: rgba(245, 158, 11, 0.4);
  box-shadow: var(--glow-amber);
}

.timeline-badge {
  display: inline-block;
  padding: 4px 14px;
  border-radius: var(--r-full);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 10px;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.28);
  color: var(--amber-light);
}

.timeline-badge.secondary {
  background: rgba(124, 58, 237, 0.1);
  border-color: rgba(124, 58, 237, 0.25);
  color: var(--purple-light);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 2px;
  margin-bottom: 8px;
}

.timeline-title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.timeline-org {
  font-size: 0.82rem;
  color: var(--cyan);
  font-weight: 500;
  letter-spacing: 0.5px;
  margin-bottom: 14px;
}

.timeline-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 18px;
}

/* ============================================================
   14. CONTACT SECTION
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 28px;
  align-items: start;
}

.contact-card {
  padding: 40px;
  height: 100%;
}

.contact-card h3 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--purple-light), var(--cyan-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.contact-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.75;
  margin-bottom: 32px;
}

.contact-links { display: flex; flex-direction: column; gap: 12px; }

.contact-link {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 16px 22px;
  transition:
    border-color var(--t-base) var(--ease),
    transform    var(--t-base) var(--ease),
    box-shadow   var(--t-base) var(--ease);
}

.contact-link:hover {
  border-color: rgba(124, 58, 237, 0.35);
  transform: translateX(8px);
  box-shadow: var(--glow-purple);
}

.contact-link-icon { font-size: 1.4rem; flex-shrink: 0; }

.contact-link-label {
  display: block;
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 2px;
}

.contact-link-value {
  display: block;
  font-size: 0.88rem;
  color: var(--text-primary);
  font-weight: 500;
}

/* Contact form */
.contact-form { padding: 40px; }

.form-group { margin-bottom: 22px; }

.form-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-top: 1px solid var(--glass-border-light);
  border-radius: var(--r-sm);
  padding: 14px 18px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.92rem;
  transition:
    border-color var(--t-base) var(--ease),
    box-shadow   var(--t-base) var(--ease),
    background   var(--t-base) var(--ease);
  outline: none;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--purple-light);
  background: rgba(255, 255, 255, 0.07);
  box-shadow: 0 0 24px rgba(124, 58, 237, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

/* ============================================================
   15. FOOTER
   ============================================================ */
.footer {
  position: relative;
  z-index: 2;
  border-top: 1px solid var(--glass-border);
  padding: 48px 0;
  background: rgba(5, 5, 15, 0.6);
  backdrop-filter: blur(12px);
}

.footer-content { text-align: center; }

.footer-logo {
  display: block;
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 12px;
}

.footer-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

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

/* ============================================================
   16. TILT CARD & 3D DEPTH LAYERING
   ============================================================ */
.tilt-card {
  transform-style: preserve-3d;
  perspective: 1200px;
  transition: transform 0.15s ease-out;
  will-change: transform;
}

.tilt-card .project-icon,
.tilt-card .project-title,
.tilt-card .project-number,
.tilt-card .stat-number,
.tilt-card .avatar-container,
.tilt-card .skill-category-header,
.tilt-card .timeline-badge {
  transform: translateZ(35px);
  transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.tilt-card .project-desc,
.tilt-card .project-tech,
.tilt-card .project-footer,
.tilt-card .about-bio,
.tilt-card .skill-tags,
.tilt-card .timeline-desc {
  transform: translateZ(18px);
  transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.tilt-card:hover .project-icon,
.tilt-card:hover .avatar-container {
  transform: translateZ(48px) scale(1.05);
}

/* ============================================================
   17. KEYFRAME ANIMATIONS
   ============================================================ */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-18px); }
}

@keyframes floatY {
  0%, 100% { transform: translateX(-50%) translateY(0px); }
  50%       { transform: translateX(-50%) translateY(-10px); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(32px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

@keyframes scrollWheel {
  0%   { transform: translateY(0);    opacity: 1; }
  80%  { transform: translateY(18px); opacity: 0; }
  100% { transform: translateY(0);    opacity: 0; }
}

@keyframes gradient-shift {
  0%   { background-position: 0%   50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0%   50%; }
}

@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

@keyframes ring-spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

@keyframes pulse-ring {
  0%, 100% { transform: scale(1); opacity: 1; }
  50%       { transform: scale(1.4); opacity: 0.3; }
}

@keyframes pulse-ring-amber {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
    box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.5);
  }
  50% {
    transform: scale(1.4);
    opacity: 0.3;
    box-shadow: 0 0 0 10px rgba(245, 158, 11, 0);
  }
}

/* ============================================================
   18. RESPONSIVE DESIGN
   ============================================================ */
@media (max-width: 1100px) {
  .about-grid    { grid-template-columns: 300px 1fr; }
  .skills-grid   { grid-template-columns: repeat(2, 1fr); }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-orb-ring { display: none; }
}

@media (max-width: 768px) {
  :root { --section-padding: 70px 0; }

  /* Mobile nav */
  .nav-links {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(5, 5, 15, 0.97);
    backdrop-filter: blur(24px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    z-index: 999;
  }

  .nav-links.open { display: flex; }

  .nav-link { font-size: 1.4rem; padding: 12px 32px; }

  .hamburger { display: flex; }

  .about-grid    { grid-template-columns: 1fr; }
  .skills-grid   { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .contact-grid  { grid-template-columns: 1fr; }
  .stats-grid    { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .hero-name     { letter-spacing: -1px; }
  .hero-cta      { flex-direction: column; align-items: stretch; }
  .btn           { justify-content: center; }
  .timeline-item { padding-left: 56px; }
}