/* ─── Design System ─── */
:root {
  --primary: #2d6a4f;
  --primary-light: #40916c;
  --primary-dark: #1b4332;
  --accent: #52b788;
  --bg: #f4f7f4;
  --bg-card: #ffffff;
  --bg-elevated: #ebefe9;
  --text: #1b2621;
  --text-muted: #4a5c53;
  --text-dim: #6d8076;
  --border: rgba(45, 106, 79, 0.12);
  --border-hover: rgba(45, 106, 79, 0.25);
  --gradient: linear-gradient(135deg, #2d6a4f, #52b788);
  --gradient-bg: linear-gradient(135deg, rgba(45, 106, 79, 0.04), rgba(82, 183, 136, 0.02));
  --radius: 12px;
  --radius-lg: 16px;
  --radius-full: 50px;
  --shadow: 0 4px 20px rgba(27, 38, 33, 0.05);
  --shadow-hover: 0 8px 30px rgba(27, 38, 33, 0.12);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

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

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

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

ul {
  list-style: none;
}

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

/* ─── Scrollbar ─── */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg);
}
::-webkit-scrollbar-thumb {
  background: var(--primary-dark);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* ─── Container ─── */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── Section ─── */
.section {
  padding: 30px 0 80px 0;
  position: relative;
}

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

.section-divider {
  height: 1px;
  border: none;
  background: linear-gradient(90deg, transparent, rgba(0, 0, 0, 0.08), transparent);
  margin: 0;
}

/* ─── Section Header ─── */
.section-header {
  margin-bottom: 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
}

.section-number {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--primary-light);
  letter-spacing: 2px;
  font-family: monospace;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.5px;
}

.section-line {
  width: 60px;
  height: 3px;
  background: var(--gradient);
  border-radius: var(--radius-full);
}

/* ─── Tags ─── */
.tag {
  display: inline-block;
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary-light);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 500;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.tag:hover {
  background: rgba(99, 102, 241, 0.2);
  border-color: var(--border-hover);
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font);
  font-weight: 600;
  font-size: 1rem;
  padding: 12px 28px;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 15px rgba(45, 106, 79, 0.15);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(45, 106, 79, 0.25);
}

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

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary-light);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 20px;
  font-size: 0.9rem;
}

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

/* ─── Navbar ─── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
  padding: 14px 0;
}

.navbar.scrolled {
  background: rgba(244, 247, 244, 0.95);
  box-shadow: 0 4px 20px rgba(27, 38, 33, 0.05);
  padding: 10px 0;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.4rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -1px;
}

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

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  transition: var(--transition);
  position: relative;
}

.nav-link:hover {
  color: var(--text);
  background: rgba(0, 0, 0, 0.04);
}

.nav-link.active {
  color: var(--primary);
  background: rgba(45, 106, 79, 0.08);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--gradient);
  border-radius: 1px;
}

.nav-btn {
  background: var(--gradient);
  color: #fff !important;
  padding: 8px 20px !important;
  margin-left: 8px;
}

.nav-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
  background: var(--gradient) !important;
}

/* ─── Hamburger ─── */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ─── Hero ─── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 100px 0 60px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(45, 106, 79, 0.08), transparent 70%);
  pointer-events: none;
}

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

.hero-greeting {
  font-size: 1.25rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 8px;
  letter-spacing: 1px;
}

.hero-name {
  font-size: 4.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 16px;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -2px;
}

.hero-typing {
  min-height: 48px;
  margin-bottom: 16px;
}

.hero-typing span {
  font-size: 1.85rem;
  font-weight: 600;
  color: var(--accent);
}

.hero-grid-container {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 1;
  text-align: left;
  width: 100%;
}

.hero-text-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-tagline {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 540px;
  margin: 0 0 32px 0;
  line-height: 1.8;
}

.hero-socials {
  display: flex;
  justify-content: flex-start;
  gap: 16px;
  margin-bottom: 36px;
}

.hero-socials a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 1.2rem;
  transition: var(--transition);
}

.hero-socials a:hover {
  color: var(--primary-light);
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: 0 4px 15px rgba(45, 106, 79, 0.15);
}

.hero-actions {
  display: flex;
  justify-content: flex-start;
  gap: 16px;
  flex-wrap: wrap;
}

/* ─── Hero Tech Visual ─── */
.hero-tech-visual {
  position: relative;
  width: 100%;
  min-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tech-central-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  box-shadow: var(--shadow);
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.95rem;
  line-height: 2;
  position: relative;
  z-index: 2;
  min-width: 260px;
  animation: cardFloat 4s ease-in-out infinite;
}

.tech-code-lines {
  display: flex;
  flex-direction: column;
}

.code-line {
  display: block;
}

.code-line.indent  { padding-left: 1.4em; }
.code-line.indent2 { padding-left: 2.8em; }

.c-keyword { color: #2d6a4f; font-weight: 700; }
.c-fn      { color: #40916c; }
.c-paren   { color: var(--text-dim); }
.c-param   { color: #e76f00; }
.c-punc    { color: var(--text-muted); }
.c-string  { color: #52b788; }

.code-cursor {
  display: inline-block;
  color: var(--primary);
  font-weight: bold;
  animation: blink 1s step-end infinite;
}

/* ─── Orbiting Icon Badges ─── */
.tech-orbit {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.tech-icon-badge {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
  box-shadow: var(--shadow);
  pointer-events: auto;
  cursor: default;
  transition: var(--transition);
}

.tech-icon-badge:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
  transform: scale(1.08) translateY(-2px);
}

.tech-icon-badge span {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
}

/* Positions + staggered float animations */
.orbit-1 { top: 0%;   left: 0%;   animation: float1 3.8s ease-in-out infinite; }
.orbit-2 { top: 0%;   right: 0%;  animation: float2 4.2s ease-in-out infinite; }
.orbit-3 { top: 22%;  left: -8%;  animation: float3 3.5s ease-in-out infinite; }
.orbit-4 { top: 22%;  right: -8%; animation: float4 4.5s ease-in-out infinite; }
.orbit-5 { bottom: 20%; left: 0%;  animation: float5 4.0s ease-in-out infinite; }
.orbit-6 { bottom: 20%; right: 0%; animation: float6 3.6s ease-in-out infinite; }
.orbit-7 { bottom: 0%;  left: 18%; animation: float7 4.8s ease-in-out infinite; }
.orbit-8 { bottom: 0%;  right: 18%; animation: float8 3.3s ease-in-out infinite; }

/* Keyframes */
@keyframes cardFloat {
  0%, 100% { transform: translateY(0px);   }
  50%       { transform: translateY(-8px);  }
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}
@keyframes float1 { 0%,100%{transform:translate(0,0)}  50%{transform:translate(-4px,-10px)} }
@keyframes float2 { 0%,100%{transform:translate(0,0)}  50%{transform:translate(4px,-8px)}  }
@keyframes float3 { 0%,100%{transform:translate(0,0)}  50%{transform:translate(-6px,6px)}  }
@keyframes float4 { 0%,100%{transform:translate(0,0)}  50%{transform:translate(6px,8px)}   }
@keyframes float5 { 0%,100%{transform:translate(0,0)}  50%{transform:translate(-5px,-6px)} }
@keyframes float6 { 0%,100%{transform:translate(0,0)}  50%{transform:translate(5px,-10px)} }
@keyframes float7 { 0%,100%{transform:translate(0,0)}  50%{transform:translate(-3px,8px)}  }
@keyframes float8 { 0%,100%{transform:translate(0,0)}  50%{transform:translate(3px,6px)}   }

@media (max-width: 968px) {
  .hero-grid-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 32px;
  }
  
  .hero-text-col {
    align-items: center;
  }
  
  .hero-tagline {
    margin: 0 auto 32px;
  }
  
  .hero-socials {
    justify-content: center;
  }
  
  .hero-actions {
    justify-content: center;
  }
}

/* ─── About ─── */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: stretch;
  margin-bottom: 56px;
}

.about-text-col {
  display: flex;
  flex-direction: column;
  gap: 24px;
  justify-content: space-between;
}

/* Stat cards */
.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.about-stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  text-align: center;
  transition: var(--transition);
}

.about-stat-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.about-stat-num {
  font-size: 1.9rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
}

.about-stat-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.about-bio {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.9;
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}


/* ─── Floating Tech Visual ─── */
.floating-tech-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 420px;
  width: 100%;
}

.tech-glow {
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(45,106,79,0.15) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  animation: glowPulseTech 4s ease-in-out infinite;
}

@keyframes glowPulseTech {
  0%, 100% { transform: translate(-50%, -50%) scale(1);   opacity: 0.7; }
  50%       { transform: translate(-50%, -50%) scale(1.15); opacity: 1;   }
}

.floating-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 50%;
  border: 1.5px dashed rgba(45,106,79,0.25);
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.floating-ring.ring-1 {
  width: 280px;
  height: 280px;
  animation: rotateSlowTech 20s linear infinite;
}

.floating-ring.ring-2 {
  width: 380px;
  height: 380px;
  animation: rotateSlowTech 28s linear infinite reverse;
  border-color: rgba(82,183,136,0.15);
}

@keyframes rotateSlowTech {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to   { transform: translate(-50%, -50%) rotate(360deg); }
}

.floating-panel {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: var(--radius-lg);
  padding: 18px 24px;
  box-shadow: 0 10px 30px rgba(27, 38, 33, 0.08), inset 0 0 0 1px rgba(255,255,255,0.2);
  width: 260px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.floating-panel:hover {
  transform: translateY(-5px) scale(1.02) !important;
  box-shadow: 0 15px 40px rgba(27, 38, 33, 0.12), inset 0 0 0 1px rgba(255,255,255,0.4);
  z-index: 10;
}

.panel-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--bg);
  border-radius: var(--radius);
  font-size: 1.5rem;
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
}

.panel-info {
  display: flex;
  flex-direction: column;
}

.panel-title {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  line-height: 1.2;
  margin-bottom: 4px;
}

.panel-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: 'Courier New', Courier, monospace;
}

.panel-front {
  top: 15%;
  right: 10%;
  z-index: 3;
  animation: floatPanel 5s ease-in-out infinite;
}

.panel-middle {
  top: 40%;
  left: 5%;
  z-index: 2;
  animation: floatPanel 6s ease-in-out infinite 1s;
}

.panel-back {
  bottom: 15%;
  right: 15%;
  z-index: 1;
  animation: floatPanel 5.5s ease-in-out infinite 2s;
}

@keyframes floatPanel {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-12px); }
}

/* Stack layers */
.stack-layer {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  transition: var(--transition);
}

.stack-layer:hover {
  border-color: var(--border-hover);
  transform: translateX(4px);
  box-shadow: var(--shadow-hover);
}

.stack-layer-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  background: var(--bg-card);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
}

.stack-layer-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stack-layer-label {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text);
}

.stack-layer-tech {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: 'Courier New', monospace;
}

.stack-layer-badge {
  flex-shrink: 0;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

/* Arrows between layers */
.stack-arrow {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
}

.arrow-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.arrow-head {
  flex-shrink: 0;
  opacity: 0.7;
}

.arrow-label {
  font-size: 0.7rem;
  font-family: 'Courier New', monospace;
  color: var(--text-dim);
  white-space: nowrap;
}

/* Mini skill bars */
.about-skill-bars {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.asb-item {
  display: flex;
  align-items: center;
  gap: 10px;
}

.asb-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  width: 56px;
  flex-shrink: 0;
}

.asb-track {
  flex: 1;
  height: 5px;
  background: rgba(0,0,0,0.06);
  border-radius: 3px;
  overflow: hidden;
}

.asb-fill {
  height: 100%;
  border-radius: 3px;
  opacity: 0.85;
  transition: width 1.2s ease;
}

.about-tags .tag {
  font-size: 0.95rem;
  padding: 6px 18px;
}

/* ─── Education Cards ─── */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.edu-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.edu-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
  opacity: 0;
  transition: var(--transition);
}

.edu-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
}

.edu-card:hover::before {
  opacity: 1;
}

.edu-icon {
  font-size: 2rem;
  color: var(--primary-light);
  margin-bottom: 16px;
}

.edu-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.edu-school {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.edu-score {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  background: rgba(34, 211, 238, 0.08);
  padding: 4px 14px;
  border-radius: var(--radius-full);
}

/* ─── Projects ─── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
}

.project-img {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.project-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

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

.project-img-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.9rem;
  font-weight: 500;
}

.project-img-placeholder i {
  font-size: 2.5rem;
}

.project-body {
  padding: 24px;
}

.project-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.project-desc {
  font-size: 0.98rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.7;
}

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

.project-tags .tag {
  font-size: 0.85rem;
  padding: 3px 12px;
}

.project-links {
  display: flex;
  gap: 10px;
}

/* ─── Skills ─── */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  transition: var(--transition);
}

.skill-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
}

.skill-icon {
  font-size: 1.8rem;
  color: var(--primary-light);
  margin-bottom: 12px;
}

.skill-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 14px;
}

.skill-bar {
  height: 4px;
  background: rgba(0, 0, 0, 0.06);
  border-radius: 2px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  border-radius: 2px;
  background: var(--gradient);
  transition: width 1s ease;
}

/* ─── Contact ─── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-heading {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
}

.contact-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 36px;
  line-height: 1.8;
}

.contact-items {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-item i {
  font-size: 1.3rem;
  color: var(--primary-light);
  margin-top: 2px;
  min-width: 24px;
}

.contact-label {
  display: block;
  font-size: 0.9rem;
  color: var(--text-dim);
  margin-bottom: 2px;
  font-weight: 500;
}

.contact-item a {
  font-size: 1.05rem;
  color: var(--text);
  transition: var(--transition);
}

.contact-item a:hover {
  color: var(--primary-light);
}

/* ─── Contact Form ─── */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: rgba(0, 0, 0, 0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-family: var(--font);
  font-size: 1rem;
  color: var(--text);
  outline: none;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}

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

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-status {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  text-align: center;
  display: none;
  font-weight: 500;
}

.form-status.success {
  display: block;
  background: rgba(34, 211, 238, 0.08);
  border: 1px solid var(--accent);
  color: var(--accent);
}

.form-status.info {
  display: block;
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid var(--primary-light);
  color: var(--primary-light);
}

.form-status.error {
  display: block;
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid #ef4444;
  color: #f87171;
}

.form-note {
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--text-dim);
  text-align: center;
}

/* ─── Footer ─── */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
}

.footer-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-socials {
  display: flex;
  gap: 12px;
}

.footer-socials a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  color: var(--text-muted);
  font-size: 1.1rem;
  transition: var(--transition);
}

.footer-socials a:hover {
  color: var(--primary-light);
  transform: translateY(-2px);
}

.footer-copy {
  font-size: 0.95rem;
  color: var(--text-dim);
}

/* ─── Back to Top ─── */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: var(--transition);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover {
  border-color: var(--primary);
  color: var(--primary-light);
  transform: translateY(-3px);
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.2);
}

.back-to-top.visible:hover {
  transform: translateY(-3px);
}

/* ─── Reveal Animations ─── */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Staggered delays */
.skills-grid .reveal:nth-child(1),
.skills-grid .reveal:nth-child(2) { transition-delay: 0s; }
.skills-grid .reveal:nth-child(3),
.skills-grid .reveal:nth-child(4) { transition-delay: 0.1s; }
.skills-grid .reveal:nth-child(5),
.skills-grid .reveal:nth-child(6) { transition-delay: 0.2s; }
.skills-grid .reveal:nth-child(7),
.skills-grid .reveal:nth-child(8) { transition-delay: 0.3s; }

.projects-grid .reveal:nth-child(1) { transition-delay: 0s; }
.projects-grid .reveal:nth-child(2) { transition-delay: 0.1s; }
.projects-grid .reveal:nth-child(3) { transition-delay: 0.2s; }
.projects-grid .reveal:nth-child(4) { transition-delay: 0.3s; }

.edu-grid .reveal:nth-child(1) { transition-delay: 0s; }
.edu-grid .reveal:nth-child(2) { transition-delay: 0.1s; }
.edu-grid .reveal:nth-child(3) { transition-delay: 0.2s; }

/* ─── Responsive ─── */

/* Tablet */
@media (max-width: 968px) {
  .hero-name {
    font-size: 3.2rem;
  }

  .hero-typing span {
    font-size: 1.55rem;
  }

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

  .projects-grid {
    gap: 20px;
  }
}

/* Mobile */
@media (max-width: 768px) {
  .section {
    padding: 20px 0 50px 0;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .section-header {
    margin-bottom: 40px;
  }

  /* Mobile Nav */
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 260px;
    height: 100vh;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: flex-start;
    padding: 80px 32px 32px;
    gap: 8px;
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: -10px 0 40px rgba(27, 38, 33, 0.08);
  }

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

  .nav-link {
    font-size: 1.1rem;
    padding: 10px 16px;
    width: 100%;
  }

  .nav-link.active::after {
    display: none;
  }

  .nav-btn {
    margin-left: 0;
    margin-top: 8px;
    text-align: center;
    width: 100%;
  }

  .hamburger {
    display: flex;
  }

  .hero-name {
    font-size: 2.6rem;
    letter-spacing: -1px;
  }

  .hero-greeting {
    font-size: 1rem;
  }

  .hero-typing span {
    font-size: 1.35rem;
  }

  .hero-tagline {
    font-size: 1rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

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

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

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

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-container {
    flex-direction: column;
    text-align: center;
  }
}

/* Small phones */
@media (max-width: 480px) {
  .hero-name {
    font-size: 2rem;
  }

  .hero-typing span {
    font-size: 1.2rem;
  }

  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  .skill-card {
    padding: 18px 14px;
  }

  .project-body {
    padding: 18px;
  }

  .project-img {
    height: 160px;
  }

  .contact-form {
    padding: 24px 20px;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
  }
}