/* ===== CSS Variables / Theme ===== */
:root {
  --bg-primary: #0a192f;
  --bg-secondary: #0d2140;
  --bg-card: #112240;
  --bg-card-hover: #1a3358;
  --text-primary: #ccd6f6;
  --text-secondary: #8892b0;
  --accent: #64ffda;
  --accent-dim: rgba(100, 255, 218, 0.1);
  --accent-blue: #57cbff;
  --white: #e6f1ff;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --nav-height: 70px;
  --radius: 10px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Reset & Base ===== */
*,
*::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);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

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

ul {
  list-style: none;
}

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  background: rgba(10, 25, 47, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  transition: box-shadow var(--transition), background var(--transition);
}

.navbar.scrolled {
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
  background: rgba(10, 25, 47, 0.95);
}

.nav-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 2px;
}

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

.nav-menu {
  display: flex;
  gap: 8px;
}

.nav-link {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 6px;
  transition: all var(--transition);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent);
  background: var(--accent-dim);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

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

.nav-toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.nav-toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-height) + 40px) 24px 60px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(100, 255, 218, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(87, 203, 255, 0.06) 0%, transparent 50%);
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1100px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
}

.hero-text {
  flex: 1;
}

.hero-greeting {
  font-size: 1.1rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 8px;
  opacity: 0;
  animation: fadeInUp 0.6s 0.2s forwards;
}

.hero-name {
  font-size: clamp(2.5rem, 6vw, 4.2rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 12px;
  min-height: 1.2em;
}

.cursor {
  color: var(--accent);
  animation: blink 1s infinite;
  font-weight: 300;
}

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

.hero-title {
  font-size: clamp(1.3rem, 3vw, 2rem);
  color: var(--text-secondary);
  font-weight: 600;
  margin-bottom: 16px;
  opacity: 0;
  animation: fadeInUp 0.6s 0.8s forwards;
}

.hero-tagline {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 500px;
  margin-bottom: 32px;
  opacity: 0;
  animation: fadeInUp 0.6s 1s forwards;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeInUp 0.6s 1.2s forwards;
}

.hero-avatar {
  flex-shrink: 0;
  opacity: 0;
  animation: fadeInUp 0.8s 0.6s forwards;
}

.avatar-ring {
  width: 260px;
  height: 260px;
  border-radius: 50%;
  padding: 5px;
  background: linear-gradient(135deg, var(--accent), var(--accent-blue));
  animation: ringPulse 4s ease-in-out infinite;
}

@keyframes ringPulse {
  0%, 100% { box-shadow: 0 0 30px rgba(100, 255, 218, 0.15); }
  50% { box-shadow: 0 0 60px rgba(100, 255, 218, 0.25); }
}

.avatar-placeholder {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 4px;
}

.avatar-img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}

.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-secondary);
  font-size: 1.2rem;
  animation: bounce 2s infinite;
  z-index: 1;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(-10px); }
  60% { transform: translateX(-50%) translateY(-5px); }
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 8px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-primary);
  border-color: var(--accent);
}

.btn-primary:hover {
  background: transparent;
  color: var(--accent);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}

.btn-outline:hover {
  background: var(--accent-dim);
}

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

/* ===== Sections ===== */
.section {
  padding: 100px 0;
  position: relative;
}

.section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(80%, 600px);
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(100, 255, 218, 0.12) 30%, rgba(100, 255, 218, 0.12) 70%, transparent);
}

.section:first-of-type::before {
  display: none;
}

.section-alt {
  background: transparent;
}

/* Subtle ambient glows for depth */
#experience {
  background: radial-gradient(ellipse at 10% 50%, rgba(100, 255, 218, 0.03) 0%, transparent 50%);
}

#skills {
  background: radial-gradient(ellipse at 90% 40%, rgba(87, 203, 255, 0.03) 0%, transparent 50%);
}

#international {
  background: radial-gradient(ellipse at 20% 60%, rgba(100, 255, 218, 0.03) 0%, transparent 50%);
}

#interests {
  background: radial-gradient(ellipse at 80% 50%, rgba(87, 203, 255, 0.03) 0%, transparent 50%);
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--white);
  text-align: center;
  margin-bottom: 16px;
  position: relative;
  display: inline-block;
  width: 100%;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--accent);
  margin: 16px auto 0;
  border-radius: 2px;
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 48px;
}

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

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

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== About ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  margin-top: 48px;
  align-items: start;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 1.02rem;
}

.about-text strong {
  color: var(--text-primary);
}

.about-details {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.detail-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  padding: 18px 22px;
  border-radius: var(--radius);
  border: 1px solid rgba(100, 255, 218, 0.08);
  transition: all var(--transition);
}

.detail-card:hover {
  border-color: rgba(100, 255, 218, 0.2);
  transform: translateX(4px);
}

.detail-card i {
  font-size: 1.3rem;
  color: var(--accent);
  width: 24px;
  text-align: center;
}

.detail-label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

.detail-value {
  display: block;
  font-size: 0.95rem;
  color: var(--text-primary);
  font-weight: 500;
}

/* ===== Timeline ===== */
.timeline {
  position: relative;
  margin-top: 48px;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--accent-blue), transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 48px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -33px;
  top: 8px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 3px solid var(--accent);
  z-index: 1;
  transition: all var(--transition);
}

.timeline-item:hover .timeline-dot {
  background: var(--accent);
  box-shadow: 0 0 12px rgba(100, 255, 218, 0.4);
}

.timeline-content {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 32px;
  border: 1px solid rgba(100, 255, 218, 0.05);
  transition: all var(--transition);
}

.timeline-content:hover {
  border-color: rgba(100, 255, 218, 0.15);
  transform: translateX(4px);
}

.timeline-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.timeline-header h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
}

.timeline-company {
  font-size: 1rem;
  color: var(--accent);
  font-weight: 600;
}

.timeline-meta {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.timeline-meta span {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.timeline-meta i {
  color: var(--accent);
  font-size: 0.8rem;
}

.timeline-project {
  color: var(--text-secondary);
  margin-bottom: 18px;
  font-size: 0.95rem;
  padding: 12px 16px;
  background: rgba(100, 255, 218, 0.04);
  border-left: 3px solid var(--accent);
  border-radius: 0 6px 6px 0;
}

.timeline-subsection {
  margin-bottom: 18px;
}

.timeline-subsection h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent-blue);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.timeline-subsection h4 i {
  font-size: 0.85rem;
}

.timeline-content ul {
  padding-left: 20px;
  list-style: none;
}

.timeline-content li {
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin-bottom: 8px;
  position: relative;
  padding-left: 16px;
}

.timeline-content li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.85rem;
}

.timeline-content li strong {
  color: var(--text-primary);
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.tag {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 4px 12px;
  border-radius: 20px;
  letter-spacing: 0.3px;
}

/* ===== Skills ===== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
  margin-top: 48px;
}

.skill-category {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid rgba(100, 255, 218, 0.05);
  transition: all var(--transition);
}

.skill-category:hover {
  border-color: rgba(100, 255, 218, 0.15);
  transform: translateY(-4px);
}

.skill-category-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}

.skill-category-header i {
  font-size: 1.3rem;
  color: var(--accent);
}

.skill-category-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
}

.skill-items {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.skill-card {
  padding: 0;
}

.skill-name {
  display: block;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.skill-bar {
  width: 100%;
  height: 6px;
  background: rgba(100, 255, 218, 0.08);
  border-radius: 3px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-blue));
  border-radius: 3px;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Education ===== */
.education-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
  margin-top: 48px;
}

.education-card {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  background: var(--bg-card);
  padding: 28px;
  border-radius: var(--radius);
  border: 1px solid rgba(100, 255, 218, 0.05);
  transition: all var(--transition);
}

.education-card:hover {
  border-color: rgba(100, 255, 218, 0.15);
  transform: translateY(-4px);
}

.education-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.education-icon i {
  font-size: 1.3rem;
  color: var(--accent);
}

.education-info h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 4px;
}

.education-school {
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin-bottom: 4px;
}

.education-location,
.education-date {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.education-location i,
.education-date i {
  color: var(--accent);
  margin-right: 4px;
  font-size: 0.8rem;
}

/* ===== Languages ===== */
.languages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
  margin-top: 48px;
}

.language-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  border: 1px solid rgba(100, 255, 218, 0.05);
  transition: all var(--transition);
}

.language-card:hover {
  border-color: rgba(100, 255, 218, 0.15);
  transform: translateY(-4px);
}

.language-flag {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 1px;
}

.language-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 6px;
}

.language-level {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.language-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(100, 255, 218, 0.12);
  transition: all var(--transition);
}

.dot.active {
  background: var(--accent);
  box-shadow: 0 0 8px rgba(100, 255, 218, 0.3);
}

/* ===== International Exposure ===== */
.international-content {
  display: flex;
  align-items: center;
  gap: 48px;
  margin-top: 48px;
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 40px;
  border: 1px solid rgba(100, 255, 218, 0.05);
}

.international-stats {
  display: flex;
  gap: 40px;
  flex-shrink: 0;
}

.international-icon {
  text-align: center;
  flex-shrink: 0;
  min-width: 120px;
}

.international-icon i {
  font-size: 3rem;
  color: var(--accent);
  margin-bottom: 8px;
  display: block;
}

.country-count {
  display: block;
  font-size: 3.5rem;
  font-weight: 900;
  color: var(--white);
  line-height: 1.1;
}

.international-icon p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

.international-text h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent-blue);
  margin-bottom: 14px;
}

.international-text p {
  color: var(--text-secondary);
  font-size: 0.98rem;
  margin-bottom: 12px;
}

.international-text strong {
  color: var(--text-primary);
}

/* ===== Teamwork ===== */
.teamwork-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}

@media (max-width: 1024px) {
  .teamwork-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 580px) {
  .teamwork-grid {
    grid-template-columns: 1fr;
  }
}

.teamwork-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  border: 1px solid rgba(100, 255, 218, 0.05);
  transition: all var(--transition);
}

.teamwork-card:hover {
  border-color: rgba(100, 255, 218, 0.15);
  transform: translateY(-4px);
}

.teamwork-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
}

.teamwork-icon i {
  font-size: 1.4rem;
  color: var(--accent);
}

.teamwork-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}

.teamwork-card p {
  color: var(--text-secondary);
  font-size: 0.92rem;
}

/* ===== Interests ===== */
.interests-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
  margin-top: 48px;
}

.interest-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  border: 1px solid rgba(100, 255, 218, 0.05);
  transition: all var(--transition);
}

.interest-card:hover {
  border-color: rgba(100, 255, 218, 0.15);
  transform: translateY(-4px);
}

.interest-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
}

.interest-icon i {
  font-size: 1.4rem;
  color: var(--accent);
}

.interest-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}

.interest-card p {
  color: var(--text-secondary);
  font-size: 0.92rem;
}

/* ===== Certificate Button ===== */
.btn-cert {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  padding: 6px 14px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(100, 255, 218, 0.15);
  border-radius: 6px;
  transition: all var(--transition);
}

.btn-cert:hover {
  background: rgba(100, 255, 218, 0.18);
  color: var(--accent);
  transform: translateY(-1px);
}

.btn-cert i {
  font-size: 0.72rem;
}

@media (max-width: 768px) {
  .international-content {
    flex-direction: column;
    text-align: center;
    padding: 28px;
  }

  .international-stats {
    justify-content: center;
  }
}

/* ===== Contact ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  margin-top: 48px;
}

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

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 22px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid rgba(100, 255, 218, 0.05);
  transition: all var(--transition);
  color: var(--text-primary);
}

.contact-item:hover {
  border-color: rgba(100, 255, 218, 0.2);
  transform: translateX(4px);
  color: var(--text-primary);
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-icon i {
  font-size: 1.1rem;
  color: var(--accent);
}

.contact-label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

.contact-value {
  display: block;
  font-size: 0.92rem;
  font-weight: 500;
}

/* ===== Contact Form ===== */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  position: relative;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 16px 18px;
  background: var(--bg-card);
  border: 1px solid rgba(100, 255, 218, 0.1);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 0.95rem;
  outline: none;
  transition: all var(--transition);
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(100, 255, 218, 0.08);
}

.form-group label {
  position: absolute;
  top: 50%;
  left: 18px;
  transform: translateY(-50%);
  color: var(--text-secondary);
  font-size: 0.9rem;
  pointer-events: none;
  transition: all var(--transition);
  display: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-secondary);
  opacity: 0.7;
}

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

/* ===== Footer ===== */
.footer {
  padding: 28px 0;
  text-align: center;
}

.footer p {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* ===== Scroll to Top ===== */
.scroll-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--accent);
  color: var(--bg-primary);
  border: none;
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition);
  z-index: 999;
  box-shadow: 0 4px 16px rgba(100, 255, 218, 0.2);
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 24px rgba(100, 255, 218, 0.3);
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .hero-content {
    flex-direction: column-reverse;
    text-align: center;
  }

  .hero-tagline {
    margin-left: auto;
    margin-right: auto;
  }

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

  .avatar-ring {
    width: 180px;
    height: 180px;
  }

  .avatar-placeholder {
    font-size: 3.5rem;
  }

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

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

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    width: 100%;
    flex-direction: column;
    background: rgba(10, 25, 47, 0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 24px;
    gap: 4px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
    border-bottom: 1px solid rgba(100, 255, 218, 0.08);
  }

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

  .nav-link {
    font-size: 1rem;
    padding: 12px 16px;
  }

  .section {
    padding: 70px 0;
  }

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

  .timeline {
    padding-left: 28px;
  }

  .timeline::before {
    left: 8px;
  }

  .timeline-dot {
    left: -26px;
    width: 12px;
    height: 12px;
  }

  .timeline-content {
    padding: 22px 20px;
  }

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

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

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

@media (max-width: 480px) {
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

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

  .timeline-header {
    flex-direction: column;
    gap: 4px;
  }

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

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