/*






 */
/* === Reset & Design Tokens === */
:root {
  --bg-dark: #0f0f1a;
  --bg-card: #1a1a2e;
  --bg-card-hover: #222240;
  --bg-surface: #16162a;
  --text-white: #f0f0f5;
  --text-light: #b8b8cc;
  --text-muted: #6e6e8a;
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-accent: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-warm: linear-gradient(135deg, #f5af19 0%, #f12711 100%);
  --gradient-cool: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  --color-primary: #667eea;
  --color-secondary: #764ba2;
  --color-accent: #f093fb;
  --color-cyan: #00f2fe;
  --color-coral: #f5576c;
  --color-gold: #f5af19;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(102, 126, 234, 0.3);
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(102, 126, 234, 0.15);
  --radius: 12px;
  --radius-sm: 8px;
}

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

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

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: all 0.3s ease;
}

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

::selection {
  background: var(--color-primary);
  color: white;
}

img {
  max-width: 100%;
  height: auto;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-white);
}

h1 { font-size: 3rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.25rem; }
/* === Layout === */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 5rem 0;
  position: relative;
}

/* Section Header */
.section-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 1rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-desc {
  color: var(--text-light);
  font-size: 1.05rem;
  max-width: 600px;
  margin-bottom: 3rem;
}

/* === Nav === */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(15, 15, 26, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
  transition: all 0.3s;
}

.site-nav.scrolled {
  padding: 0.6rem 0;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-size: 1.3rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-logo:hover {
  opacity: 0.8;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2.5rem;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  transition: color 0.3s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-white);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 1px;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-white);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Grid helpers */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
/* === Hero === */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
}

.hero-gradient {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
}

.hero-gradient-1 {
  width: 600px;
  height: 600px;
  background: var(--color-primary);
  top: -200px;
  right: -100px;
  opacity: 0.2;
}

.hero-gradient-2 {
  width: 400px;
  height: 400px;
  background: var(--color-accent);
  bottom: -100px;
  left: -100px;
  opacity: 0.15;
}

.hero-gradient-3 {
  width: 300px;
  height: 300px;
  background: var(--color-cyan);
  top: 40%;
  left: 50%;
  opacity: 0.1;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.hero-greeting {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--color-primary);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hero-greeting .wave {
  display: inline-block;
  animation: wave 2.5s infinite;
  transform-origin: 70% 70%;
  font-size: 1.4rem;
}

.hero-name {
  font-size: 4rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1rem;
}

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

.hero-role {
  font-size: 1.5rem;
  color: var(--text-light);
  font-weight: 400;
  margin-bottom: 1.5rem;
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 500px;
  margin-bottom: 2.5rem;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 2rem;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(102, 126, 234, 0.5);
  color: white;
}

.btn-outline {
  background: transparent;
  color: var(--text-white);
  border: 1.5px solid var(--border-color);
}

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

/* === Hero Social === */
.hero-social-links {
  display: flex;
  gap: 1rem;
  margin-top: 2.5rem;
}

.social-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1.5px solid var(--border-color);
  color: var(--text-muted);
  font-size: 1.1rem;
  transition: all 0.3s;
}

.social-icon:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(102, 126, 234, 0.2);
}

/* === About === */
.about-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 4rem;
  align-items: start;
}

.about-photo-wrapper {
  position: relative;
}

.about-photo-wrapper::before {
  content: '';
  position: absolute;
  top: -8px;
  left: -8px;
  right: -8px;
  bottom: -8px;
  background: var(--gradient-primary);
  border-radius: calc(var(--radius) + 4px);
  z-index: -1;
  opacity: 0.5;
}

.about-photo {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--radius);
  border: 3px solid var(--bg-dark);
}

.about-text {
  color: var(--text-light);
  font-size: 1.05rem;
  line-height: 1.9;
  margin-bottom: 2rem;
}

.about-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.detail-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.detail-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
}

.detail-value {
  font-weight: 600;
  color: var(--text-white);
}

/* === Skills === */
.skills-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-white);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  list-style: none;
  margin-bottom: 1.5rem;
}

.skill-tag {
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  border: 1px solid var(--border-color);
  color: var(--text-light);
  background: var(--bg-card);
  transition: all 0.3s;
}

.skill-tag:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.15);
}

.skill-tag.highlight {
  background: rgba(102, 126, 234, 0.15);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* === Experience Timeline === */
.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-primary), var(--color-accent), var(--color-cyan));
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  margin-bottom: 2.5rem;
  padding-left: 2rem;
}

.timeline-dot {
  position: absolute;
  left: -2.55rem;
  top: 0.5rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--gradient-primary);
  border: 3px solid var(--bg-dark);
  box-shadow: 0 0 0 3px var(--color-primary);
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: all 0.3s;
  cursor: pointer;
}

.timeline-card:hover {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
  transform: translateX(5px);
}

.timeline-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.5rem;
  gap: 1rem;
}

.timeline-role {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-white);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
  padding: 0.25rem 0.75rem;
  background: rgba(102, 126, 234, 0.1);
  border-radius: 20px;
}

.timeline-company {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.timeline-company-name {
  font-weight: 600;
  color: var(--color-primary);
  font-size: 0.95rem;
}

.timeline-logo {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  object-fit: contain;
}

.timeline-desc {
  color: var(--text-light);
  font-size: 0.9rem;
  line-height: 1.7;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.4s ease, opacity 0.3s ease;
}

.timeline-card.expanded .timeline-desc {
  max-height: 300px;
  opacity: 1;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
}

.timeline-expand {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-left: auto;
}

/* === Projects === */
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: var(--radius) var(--radius) 0 0;
  opacity: 0;
  transition: opacity 0.3s;
}

.project-card:nth-child(1)::before { background: var(--gradient-primary); }
.project-card:nth-child(2)::before { background: var(--gradient-accent); }
.project-card:nth-child(3)::before { background: var(--gradient-cool); }
.project-card:nth-child(4)::before { background: var(--gradient-warm); }

.project-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

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

.project-icon {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.project-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 0.5rem;
}

.project-desc {
  color: var(--text-light);
  font-size: 0.85rem;
  line-height: 1.6;
  flex: 1;
  margin-bottom: 1.25rem;
}

.project-tech {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.project-tech-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  background: rgba(102, 126, 234, 0.1);
  color: var(--color-primary);
}

/* === Contact === */
#contact {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-color);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: start;
}

.contact-info h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.contact-info p {
  color: var(--text-light);
  margin-bottom: 2rem;
  line-height: 1.8;
}

.contact-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-light);
  font-size: 0.95rem;
  transition: color 0.3s;
}

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

.contact-link-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(102, 126, 234, 0.1);
  border-radius: 10px;
  color: var(--color-primary);
  font-size: 1rem;
  flex-shrink: 0;
}

/* Form */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 2rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: 0.5rem;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  background: var(--bg-dark);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-white);
  font-family: var(--font-body);
  font-size: 0.9rem;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
}

.form-textarea {
  resize: vertical;
  min-height: 130px;
}

.form-submit {
  width: 100%;
}

.form-message {
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  display: none;
}

.form-message.success {
  display: block;
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid var(--color-cyan);
  color: var(--color-cyan);
}

.form-message.error {
  display: block;
  background: rgba(245, 87, 108, 0.1);
  border: 1px solid var(--color-coral);
  color: var(--color-coral);
}

/* === Footer === */
.site-footer {
  padding: 3rem 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  list-style: none;
  margin-bottom: 1.5rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.3s;
}

.footer-links a:hover {
  color: var(--color-primary);
}

.footer-text {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.footer-text .heart {
  color: var(--color-coral);
}

/* === Scroll to top === */
.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  background: var(--gradient-primary);
  border: none;
  border-radius: 50%;
  color: white;
  font-size: 1.2rem;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
  z-index: 999;
  box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
}

.scroll-top.visible {
  display: flex;
}

.scroll-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(102, 126, 234, 0.5);
}

/* === Divider === */
.section-divider {
  width: 60px;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: 3px;
  margin-bottom: 2rem;
}

/* Education subsection */
.subsection-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-top: 3rem;
  margin-bottom: 1.5rem;
}
/* === Animations === */

/* Wave hand */
@keyframes wave {
  0%, 60%, 100% { transform: rotate(0deg); }
  10%, 30% { transform: rotate(14deg); }
  20% { transform: rotate(-8deg); }
  40% { transform: rotate(-4deg); }
  50% { transform: rotate(10deg); }
}

/* Fade in up */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered children */
.stagger-children .fade-in:nth-child(1) { transition-delay: 0.1s; }
.stagger-children .fade-in:nth-child(2) { transition-delay: 0.2s; }
.stagger-children .fade-in:nth-child(3) { transition-delay: 0.3s; }
.stagger-children .fade-in:nth-child(4) { transition-delay: 0.4s; }

/* Floating gradient orbs */
@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.05); }
}

.hero-gradient-1 { animation: float 8s ease-in-out infinite; }
.hero-gradient-2 { animation: float 10s ease-in-out infinite 1s; }
.hero-gradient-3 { animation: float 12s ease-in-out infinite 2s; }

/* Typing cursor */
.typing-cursor {
  display: inline-block;
  width: 3px;
  height: 1.2em;
  background: var(--color-primary);
  vertical-align: text-bottom;
  margin-left: 2px;
  animation: cursor-blink 0.8s step-end infinite;
}

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

/* Skill tag hover glow */
.skill-tag:hover {
  box-shadow: 0 0 20px rgba(102, 126, 234, 0.2);
}

/* Card entrance */
@keyframes card-enter {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Gradient shift on hero name */
@keyframes gradient-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero-name .gradient-text {
  background-size: 200% 200%;
  animation: gradient-shift 6s ease infinite;
}

/* Pulse on timeline dots */
.timeline-dot {
  animation: pulse-dot 3s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 3px var(--color-primary); }
  50% { box-shadow: 0 0 0 6px rgba(102, 126, 234, 0.3); }
}
/* === Responsive === */

@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 200px 1fr;
    gap: 2.5rem;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

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

@media (max-width: 768px) {
  html { font-size: 15px; }

  section { padding: 4rem 0; }

  .container { padding: 0 1.25rem; }

  /* Nav */
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(15, 15, 26, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 2rem;
    gap: 1rem;
  }

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

  .nav-toggle {
    display: block;
  }

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

  .hero-role {
    font-size: 1.2rem;
  }

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

  .btn {
    justify-content: center;
  }

  /* About */
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .about-photo-wrapper {
    max-width: 200px;
    margin: 0 auto;
  }

  .about-details {
    grid-template-columns: 1fr;
  }

  /* Timeline */
  .timeline-top {
    flex-direction: column;
  }

  /* Section titles */
  .section-title {
    font-size: 1.75rem;
  }

  h1 { font-size: 2.2rem; }
}

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

  .hero-social-links {
    gap: 0.75rem;
  }

  .social-icon {
    width: 38px;
    height: 38px;
    font-size: 0.95rem;
  }
}