:root {
  --bg-primary: #07111e;
  --bg-secondary: #0c1b2e;
  --bg-card: rgba(15, 31, 53, 0.78);
  --bg-card-hover: rgba(20, 41, 69, 0.95);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #f59e0b;
  --accent-light: #fbbf24;
  --accent-glow: rgba(245, 158, 11, 0.18);
  --border: rgba(148, 163, 184, 0.14);
  --border-accent: rgba(245, 158, 11, 0.45);
  --header-bg: rgba(7, 17, 30, 0.82);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.45);
  --radius-md: 14px;
  --radius-lg: 20px;
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #eef2f6;
  --bg-card: rgba(255, 255, 255, 0.92);
  --bg-card-hover: #ffffff;
  --text-primary: #0b192c;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --accent: #d97706;
  --accent-light: #f59e0b;
  --accent-glow: rgba(217, 119, 6, 0.12);
  --border: rgba(15, 23, 42, 0.1);
  --border-accent: rgba(217, 119, 6, 0.4);
  --header-bg: rgba(248, 250, 252, 0.88);
  --shadow-lg: 0 18px 40px rgba(15, 23, 42, 0.08);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  transition: background-color 0.25s ease, color 0.25s ease;
}

/* Ambient Background */
.ambient-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(110px);
  opacity: 0.45;
}

.glow-1 {
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.22), transparent 70%);
  top: -140px;
  right: -100px;
}

.glow-2 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(29, 78, 216, 0.22), transparent 70%);
  bottom: -200px;
  left: -160px;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(to right, var(--border) 1px, transparent 1px),
    linear-gradient(to bottom, var(--border) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at top, rgba(0, 0, 0, 0.4), transparent 75%);
  opacity: 0.3;
}

.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav-container {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  transition: transform 0.2s ease;
}

.brand:hover {
  transform: scale(1.04);
}

.brand-logo {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  object-fit: contain;
  display: block;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 5px 8px;
  border-radius: 999px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  white-space: nowrap;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 7px 14px;
  border-radius: 999px;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.nav-links a:hover {
  color: var(--accent);
  background: var(--accent-glow);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.btn-chip,
.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 38px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-chip {
  padding: 0 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  font-weight: 600;
}

.btn-icon {
  width: 38px;
}

.btn-icon svg {
  width: 18px;
  height: 18px;
}

[data-theme="dark"] .icon-moon {
  display: none;
}

[data-theme="light"] .icon-sun {
  display: none;
}

.btn-chip:hover,
.btn-icon:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 20px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.93rem;
  text-decoration: none;
  white-space: nowrap;
  transition: all 0.22s ease;
  cursor: pointer;
}

.btn-sm {
  height: 38px;
  padding: 0 15px;
  font-size: 0.85rem;
  border-radius: 10px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #ea580c);
  color: #07111e;
  border: none;
  box-shadow: 0 8px 22px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  filter: brightness(1.06);
}

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

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

/* Hero Section */
.hero-section {
  padding: 72px 0 64px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.85fr;
  gap: 44px;
  align-items: center;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--accent-glow);
  border: 1px solid var(--border-accent);
  color: var(--accent-light);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 20px;
}

[data-theme="light"] .status-pill {
  color: var(--accent);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

.hero-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: clamp(2.4rem, 4.6vw, 3.6rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.text-gradient {
  background: linear-gradient(135deg, var(--accent-light), #ea580c);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-role {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.32rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 18px;
}

.hero-summary {
  color: var(--text-secondary);
  font-size: 1.03rem;
  max-width: 640px;
  margin-bottom: 28px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.quick-info-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.quick-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color 0.2s ease;
}

.quick-item svg {
  color: var(--accent);
}

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

/* Hero Profile Card */
.hero-profile-card {
  background: linear-gradient(165deg, #0b192c 0%, #07111e 100%);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  padding: 34px 28px;
  text-align: center;
  box-shadow: var(--shadow-lg);
  color: #f8fafc;
  position: relative;
}

.profile-avatar-ring {
  width: 196px;
  height: 196px;
  margin: 0 auto 20px;
  padding: 5px;
  border-radius: 50%;
  background: linear-gradient(135deg, #fbbf24, #d97706);
  box-shadow: 0 12px 30px rgba(245, 158, 11, 0.25);
}

.profile-avatar {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  display: block;
  background-color: #0b192c;
}

.mono-tag {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: #fbbf24;
  background: rgba(245, 158, 11, 0.14);
  padding: 4px 10px;
  border-radius: 6px;
  margin-bottom: 10px;
}

.profile-card-name {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 4px;
}

.profile-card-sub {
  font-size: 0.88rem;
  color: #94a3b8;
  margin-bottom: 22px;
}

.profile-mini-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  padding-top: 18px;
  border-top: 1px solid rgba(148, 163, 184, 0.16);
}

.mini-stat {
  display: flex;
  flex-direction: column;
}

.stat-val {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  font-size: 1.05rem;
  color: #fbbf24;
}

.stat-lbl {
  font-size: 0.76rem;
  color: #94a3b8;
}

/* Sections */
.section {
  padding: 76px 0;
}

.section-alt {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-heading {
  margin-bottom: 36px;
}

.section-heading.center {
  text-align: center;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

.section-eyebrow {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.section-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: clamp(1.65rem, 3vw, 2.15rem);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.section-subtitle {
  color: var(--text-secondary);
  margin-top: 10px;
  font-size: 0.98rem;
}

/* Dual Column Timeline */
.dual-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

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

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 26px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.timeline-card.highlight-card {
  border-left: 4px solid var(--accent);
}

.timeline-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.timeline-role {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
}

.timeline-org {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.95rem;
}

.timeline-date {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  padding: 4px 10px;
  border-radius: 8px;
  background: var(--accent-glow);
  color: var(--accent);
  font-weight: 500;
}

.timeline-desc {
  color: var(--text-secondary);
  font-size: 0.94rem;
  margin-bottom: 16px;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tech-pill {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.76rem;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.1);
  border: 1px solid var(--border);
  color: var(--text-primary);
}

.lang-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.lang-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  border-radius: 10px;
  background: rgba(148, 163, 184, 0.06);
  border: 1px solid var(--border);
}

.lang-name {
  font-weight: 600;
  font-size: 0.93rem;
}

.lang-badge {
  font-size: 0.82rem;
  color: var(--accent);
  font-weight: 500;
}

/* Skills Grid */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.skill-category-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.skill-category-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-3px);
}

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

.skill-icon {
  font-size: 1.4rem;
}

.skill-card-head h3 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.08rem;
  font-weight: 700;
}

.skill-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skill-badge {
  padding: 8px 15px;
  border-radius: 999px;
  border: 1px solid var(--border-accent);
  background: var(--accent-glow);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.88rem;
  transition: all 0.2s ease;
}

.skill-badge:hover {
  background: var(--accent);
  color: #07111e;
}

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 26px;
  display: flex;
  flex-direction: column;
  transition: all 0.22s ease;
}

.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  background: var(--bg-card-hover);
}

.project-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.project-folder {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 600;
}

.project-link {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: var(--text-primary);
  transition: all 0.2s ease;
}

.project-link:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.project-name {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1.12rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.project-name a {
  color: var(--text-primary);
  text-decoration: none;
}

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

.project-desc {
  color: var(--text-secondary);
  font-size: 0.91rem;
  margin-bottom: 18px;
  flex-grow: 1;
}

/* Certifications Grid */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr));
  gap: 16px;
}

.cert-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 20px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.cert-card:hover {
  border-color: var(--border-accent);
  transform: translateX(4px);
}

.cert-bar {
  width: 4px;
  height: 38px;
  border-radius: 4px;
  background: var(--accent);
  flex-shrink: 0;
}

.cert-name {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.98rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.cert-meta {
  color: var(--text-secondary);
  font-size: 0.83rem;
}

/* Contact Banner */
.contact-banner {
  background: linear-gradient(145deg, var(--bg-card), var(--bg-secondary));
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  padding: 44px;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 36px;
  align-items: center;
}

.contact-desc {
  color: var(--text-secondary);
  margin-top: 12px;
  font-size: 0.98rem;
}

.contact-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.contact-card-link {
  display: flex;
  flex-direction: column;
  padding: 16px 18px;
  border-radius: 12px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  text-decoration: none;
  transition: all 0.2s ease;
}

.contact-card-link:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.contact-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent);
  margin-bottom: 4px;
}

.contact-val {
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--text-primary);
  word-break: break-word;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  color: var(--text-secondary);
  font-size: 0.88rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.site-footer a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
}

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

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

.mobile-menu-btn {
  display: none;
}

.mobile-menu-btn .icon-close {
  display: none;
}

.mobile-menu-btn.is-active .icon-menu {
  display: none;
}

.mobile-menu-btn.is-active .icon-close {
  display: block;
}

/* Responsive Breakpoints */
@media (max-width: 960px) {
  .nav-container {
    display: flex;
    justify-content: space-between;
  }

  .hero-grid,
  .dual-column,
  .skills-grid,
  .projects-grid,
  .contact-banner {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    gap: 32px;
  }

  .hero-profile-card {
    order: -1;
    max-width: 460px;
    width: 100%;
    margin: 0 auto;
    padding: 26px 20px;
  }

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

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

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

  .quick-info-bar {
    justify-content: center;
  }

  .mobile-menu-btn {
    display: inline-flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    transform: none;
    border-radius: 0;
    border-left: none;
    border-right: none;
    border-top: none;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 14px 20px 18px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-accent);
    box-shadow: var(--shadow-lg);
  }

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

  .nav-links a {
    padding: 12px 14px;
    border-radius: 10px;
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--text-primary);
  }

  .nav-links a:hover,
  .nav-links a:active {
    background: var(--accent-glow);
    color: var(--accent);
  }

  .section {
    padding: 56px 0;
  }
}

@media (max-width: 560px) {
  html {
    scroll-padding-top: 72px;
  }

  .container {
    padding: 0 16px;
  }

  .nav-container {
    height: 64px;
    gap: 8px;
  }

  .brand-logo {
    width: 38px;
    height: 38px;
  }

  .nav-actions {
    gap: 6px;
  }

  .nav-cv-btn span {
    display: none;
  }

  .nav-cv-btn {
    padding: 0 11px;
    height: 38px;
  }

  .nav-cv-btn::after {
    content: "CV";
    font-size: 0.8rem;
    font-weight: 700;
  }

  .hero-section {
    padding: 28px 0 42px;
  }

  .profile-avatar-ring {
    width: 144px;
    height: 144px;
    margin-bottom: 14px;
  }

  .hero-title {
    font-size: 2.05rem;
  }

  .hero-role {
    font-size: 1.12rem;
    margin-bottom: 14px;
  }

  .hero-summary {
    font-size: 0.95rem;
    margin-bottom: 22px;
  }

  .hero-cta {
    flex-direction: column;
    gap: 10px;
  }

  .hero-cta .btn {
    width: 100%;
    justify-content: center;
    padding: 13px 16px;
  }

  .quick-info-bar {
    flex-direction: column;
    align-items: center;
    gap: 10px;
  }

  .section {
    padding: 44px 0;
  }

  .section-heading {
    margin-bottom: 24px;
  }

  .timeline-card,
  .skill-category-card,
  .project-card {
    padding: 20px 18px;
  }

  .timeline-header {
    flex-direction: column;
    gap: 8px;
  }

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

  .contact-banner {
    padding: 24px 18px;
    gap: 24px;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
    gap: 8px;
  }
}