:root {
  --ink: #e2dfd8;
  --paper: #0f1117;
  --cream: #161b26;
  --steel: #1e2530;
  --accent: #e07a3a;
  --accent2: #2a6bc8;
  --mid: #8b95a5;
  --rule: #252b38;
  --mono: "DM Mono", monospace;
  --serif: "Cormorant Garamond", serif;
  --sans: "Syne", sans-serif;
}

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

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

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  overflow-x: hidden;
  cursor: default;
}

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 3rem;
  background: rgba(15, 17, 23, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
}

[data-theme="light"] nav {
  background: rgba(245, 243, 239, 0.92);
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  object-fit: cover;
  border: 1.5px solid var(--rule);
  cursor: pointer;
  transition:
    border-color 0.2s,
    transform 0.15s;
}

.nav-avatar:hover {
  border-color: var(--accent);
  transform: scale(1.08);
}

.nav-logo {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--ink);
  text-transform: uppercase;
}

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

.nav-right {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

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

.nav-links a {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--mid);
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--ink);
}

.nav-cta {
  background: var(--accent);
  color: #fff !important;
  padding: 0.45rem 1.2rem;
  border-radius: 2px;
}

.nav-cta:hover {
  background: #c86828;
  color: #fff !important;
}

#hero {
  min-height: 82vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding-top: 5rem;
  position: relative;
  overflow: hidden;
}

.hero-bg-rule {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: var(--rule);
}

.hero-left {
  padding: 5rem 3rem 3rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
}

.hero-eyebrow {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hero-eyebrow::before {
  content: "";
  display: block;
  width: 2rem;
  height: 1px;
  background: var(--accent);
}

h1 {
  font-family: var(--serif);
  font-size: clamp(3rem, 5vw, 5.5rem);
  font-weight: 300;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: 0.25rem;
}

h1 em {
  font-style: italic;
  color: var(--accent);
}

.hero-title-line2 {
  font-family: var(--serif);
  font-size: clamp(3rem, 5vw, 5.5rem);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: rgba(226, 223, 216, 0.55);
  margin-bottom: 1.5rem;
}

.hero-desc {
  font-family: var(--sans);
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--mid);
  max-width: 95%;
  margin-bottom: 1.75rem;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
}

.tag {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 0.75rem;
  border: 1px solid var(--rule);
  border-radius: 2px;
  color: var(--mid);
  background: rgba(255, 255, 255, 0.06);
}

.tag.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(224, 122, 58, 0.08);
}

.hero-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  padding: 0.8rem 2rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 2px;
  transition:
    background 0.2s,
    transform 0.15s;
}

.btn-primary:hover {
  background: #c86828;
  transform: translateY(-1px);
}

.btn-secondary {
  color: var(--ink);
  padding: 0.8rem 1.5rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  border-bottom: 1px solid var(--ink);
  transition:
    color 0.2s,
    border-color 0.2s;
}

.btn-secondary:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.hero-right {
  padding: 5rem 2.5rem 3rem 3rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  background: var(--cream);
  position: relative;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 2px;
  margin-bottom: 1.25rem;
}

.stat-box {
  background: rgba(255, 255, 255, 0.04);
  padding: 1.75rem 1.5rem;
  border: 1px solid var(--rule);
}

.stat-number {
  font-family: var(--serif);
  font-size: 2.8rem;
  font-weight: 300;
  line-height: 1;
  color: var(--ink);
  margin-bottom: 0.4rem;
}

.stat-number sup {
  font-size: 1.2rem;
  color: var(--accent);
  vertical-align: super;
}

.stat-label {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mid);
}

.skills-section-mini {
  padding: 0 0.25rem;
}

.skills-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--mid);
  margin-bottom: 1rem;
}

.skill-bar-group {
  margin-bottom: 0.85rem;
}

.skill-bar-label {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--ink);
  margin-bottom: 0.35rem;
}

.skill-bar-track {
  height: 2px;
  background: var(--rule);
  border-radius: 1px;
  overflow: hidden;
}

.skill-bar-fill {
  height: 100%;
  background: var(--ink);
  border-radius: 1px;
  transform-origin: left;
  animation: barGrow 1.2s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  transform: scaleX(0);
}

@keyframes barGrow {
  to {
    transform: scaleX(1);
  }
}

.prof-group {
  margin-bottom: 0.9rem;
}

.prof-group-label {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mid);
  margin-bottom: 0.5rem;
}

.prof-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.prof-tag {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--rule);
  border-radius: 2px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.06);
}

#education {
  background: var(--paper);
}

.edu-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--rule);
  padding: 2rem;
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 0.6s,
    transform 0.6s;
}

.edu-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.edu-year {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  white-space: nowrap;
  padding-top: 0.25rem;
}

.edu-details {
  flex: 1;
}

.edu-degree {
  font-family: var(--serif);
  font-size: 1.45rem;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 0.25rem;
}

.edu-school {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--mid);
  letter-spacing: 0.06em;
  margin-bottom: 0.75rem;
}

.edu-desc {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--mid);
  max-width: 60ch;
  margin-bottom: 1rem;
}

.edu-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.edu-chip {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.06em;
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--rule);
  border-radius: 2px;
  color: var(--mid);
}

.edu-lang {
  margin-top: 1.5rem;
}

.edu-lang-title {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 0.5rem;
}

.contact-form-title {
  font-family: var(--serif);
  font-size: 1.6rem;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: 1.5rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-form label {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(245, 243, 239, 0.4);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.contact-form input,
.contact-form textarea {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 3px;
  padding: 0.7rem 0.9rem;
  font-family: var(--sans);
  font-size: 0.85rem;
  color: var(--ink);
  outline: none;
  transition: border-color 0.2s;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--accent);
}

.contact-form textarea {
  resize: vertical;
  min-height: 100px;
}

.contact-form-row {
  display: flex;
  gap: 1rem;
}

.contact-form-row label {
  flex: 1;
}

.btn-submit {
  background: var(--accent);
  color: var(--paper);
  padding: 0.75rem 2rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: none;
  border-radius: 2px;
  cursor: pointer;
  transition:
    background 0.2s,
    transform 0.15s;
  align-self: flex-start;
}

.btn-submit:hover {
  background: #a84e20;
  transform: translateY(-1px);
}

.form-success {
  display: none;
  background: rgba(74, 222, 128, 0.1);
  border: 1px solid rgba(74, 222, 128, 0.3);
  padding: 1rem;
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: #4ade80;
  text-align: center;
}

.form-success.show {
  display: block;
}

section {
  padding: 2.0rem 2.0rem;
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  margin-bottom: 1.6rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--rule);
}

.section-number {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--accent);
}

h2 {
  font-family: var(--serif);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 400;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.section-subtitle {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--mid);
  letter-spacing: 0.08em;
  max-width: 28ch;
  text-align: right;
  line-height: 1.6;
}

#experience {
  background: var(--steel);
  color: var(--ink);
}

#experience .section-number {
  color: #c8a87a;
}

#experience h2 {
  color: var(--ink);
}

#experience .section-subtitle {
  color: rgba(245, 243, 239, 0.4);
}

#experience .section-header {
  border-color: var(--rule);
}

.exp-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.exp-item {
  display: grid;
  grid-template-columns: 12rem 1px 1fr;
  gap: 0 2.5rem;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--rule);
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 0.6s,
    transform 0.6s;
}

.exp-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.exp-date-col {
  text-align: right;
  padding-right: 2.5rem;
}

.exp-date {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: #c8a87a;
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 0.4rem;
}

.exp-type {
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(245, 243, 239, 0.3);
}

.exp-rule {
  width: 1px;
  background: rgba(255, 255, 255, 0.12);
  position: relative;
}

.exp-rule::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #c8a87a;
  border: 2px solid var(--steel);
}

.exp-content {
  padding-left: 0;
}

.exp-role {
  font-family: var(--serif);
  font-size: 1.45rem;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 0.2rem;
}

.exp-company {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: rgba(245, 243, 239, 0.5);
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
  text-decoration: none;
  cursor: pointer;
  transition: color 0.2s;
  display: inline-block;
}

.exp-company:hover {
  color: var(--accent);
}

.exp-desc {
  font-size: 0.88rem;
  line-height: 1.75;
  color: rgba(245, 243, 239, 0.65);
  margin-bottom: 1rem;
  max-width: 65ch;
  list-style: none;
  padding-left: 0;
}

.exp-desc li {
  position: relative;
  padding-left: 1.2rem;
  margin-bottom: 0.5rem;
}

.exp-desc li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.75rem;
}

.exp-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.chip {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.6rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 2px;
  color: rgba(245, 243, 239, 0.5);
}

#projects {
  background: var(--paper);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

.project-card {
  background: var(--cream);
  border: 1px solid var(--rule);
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
  transform: translateY(24px);
  transition:
    opacity 0.55s,
    transform 0.55s,
    box-shadow 0.25s;
  opacity: 0;
}

.project-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.project-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

.project-card.featured {
  grid-column: span 3;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  background: var(--cream);
}

.project-tag {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.project-tag::before {
  content: "●";
  font-size: 0.4rem;
}

.project-title {
  font-family: var(--serif);
  font-size: 1.6rem;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.2;
  margin-bottom: 0.75rem;
}

.project-desc {
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--mid);
  margin-bottom: 1.5rem;
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.project-chip {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.65rem;
  background: var(--cream);
  border: 1px solid var(--rule);
  border-radius: 2px;
  color: var(--mid);
}

.project-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--steel);
  border-radius: 4px;
  min-height: 200px;
  overflow: hidden;
  position: relative;
}

.project-diagram {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.proj-icon {
  font-size: 3rem;
  filter: grayscale(1) brightness(2);
  opacity: 0.4;
}

.ros-diagram,
.ml-diagram {
  width: 100%;
  height: 180px;
}

#skills {
  background: var(--cream);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

.skill-category {
  background: rgba(255, 255, 255, 0.04);
  padding: 1.5rem 1.25rem;
  border: 1px solid var(--rule);
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 0.5s,
    transform 0.5s;
}

.skill-category.visible {
  opacity: 1;
  transform: translateY(0);
}

.skill-cat-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--rule);
}

.skill-cat-icon {
  width: 28px;
  height: 28px;
  background: var(--steel);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
}

.skill-cat-title {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
}

.skill-list {
  list-style: none;
}

.skill-list li {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.03em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--rule);
  color: var(--mid);
}

.skill-list li::before {
  content: "—";
  color: var(--accent);
  font-size: 0.6rem;
  flex-shrink: 0;
}

#contact {
  background: #0a0c10;
  color: var(--ink);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  padding: 0;
}

.contact-left {
  padding: 3rem 2.25rem;
  border-right: 1px solid var(--rule);
}

.contact-right {
  padding: 3rem 2.25rem;
  display: flex;
  flex-direction: column;
}

#contact h2 {
  color: var(--ink);
}

#contact .section-number {
  color: rgba(200, 96, 42, 0.8);
}

.contact-intro {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 300;
  line-height: 1.5;
  color: rgba(245, 243, 239, 0.75);
  margin-top: 0.5rem;
  margin-bottom: 1.25rem;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.contact-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--rule);
  text-decoration: none;
  color: var(--ink);
  transition: padding-left 0.2s;
}

.contact-link:hover {
  padding-left: 0.5rem;
}

.contact-link-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(245, 243, 239, 0.35);
  margin-bottom: 0.2rem;
}

.contact-link-value {
  font-size: 0.9rem;
  color: var(--ink);
}

.contact-link-arrow {
  font-size: 1rem;
  color: rgba(245, 243, 239, 0.25);
  transition: color 0.2s;
}

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

.availability-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 2rem;
  border-radius: 4px;
  margin-bottom: 2rem;
}

.avail-indicator {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.avail-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 0 3px rgba(74, 222, 128, 0.2);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%,
  100% {
    box-shadow: 0 0 0 3px rgba(74, 222, 128, 0.2);
  }

  50% {
    box-shadow: 0 0 0 6px rgba(74, 222, 128, 0.1);
  }
}

.avail-text {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #4ade80;
}

.avail-desc {
  font-size: 0.875rem;
  line-height: 1.65;
  color: rgba(245, 243, 239, 0.55);
}

.location-note {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: rgba(245, 243, 239, 0.3);
  letter-spacing: 0.08em;
  margin-top: 1.5rem;
}

footer {
  background: #060810;
  padding: 1.5rem 3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--rule);
}

.footer-copy {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: rgba(245, 243, 239, 0.2);
  letter-spacing: 0.1em;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: rgba(245, 243, 239, 0.25);
  text-decoration: none;
  letter-spacing: 0.08em;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: rgba(245, 243, 239, 0.6);
}

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
}

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

[data-theme="light"] {
  --ink: #0d0f12;
  --paper: #f5f3ef;
  --cream: #ede9e1;
  --steel: #1e2530;
  --accent: #c8602a;
  --mid: #6b7280;
  --rule: #d1ccc4;
}

[data-theme="light"] .tag {
  background: white;
}

[data-theme="light"] .tag.active {
  background: rgba(200, 96, 42, 0.05);
}

[data-theme="light"] .hero-title-line2 {
  color: var(--steel);
}

[data-theme="light"] .stat-box {
  background: white;
}

[data-theme="light"] .prof-tag {
  background: white;
}

[data-theme="light"] .edu-card {
  background: white;
}

[data-theme="light"] .project-card {
  background: white;
}

[data-theme="light"] .project-card:hover {
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .project-card.featured {
  background: var(--cream);
}

[data-theme="light"] .skill-category {
  background: white;
}

[data-theme="light"] .skill-list li {
  border-bottom-color: rgba(0, 0, 0, 0.04);
}

[data-theme="light"] #contact {
  background: var(--paper);
  color: var(--ink);
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

[data-theme="light"] #contact h2 {
  color: var(--ink);
}

[data-theme="light"] #contact .section-number {
  color: #c8602a;
}

[data-theme="light"] .contact-left {
  background: var(--paper);
  border-right-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .contact-right {
  background: var(--paper);
}

[data-theme="light"] .contact-intro {
  color: rgba(13, 15, 18, 0.8);
}

[data-theme="light"] .contact-link {
  color: var(--ink);
  border-bottom-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .contact-link-label {
  color: rgba(13, 15, 18, 0.6);
}

[data-theme="light"] .contact-link-value {
  color: var(--ink);
}

[data-theme="light"] .contact-form label {
  color: rgba(13, 15, 18, 0.6);
}

[data-theme="light"] .contact-form input,
[data-theme="light"] .contact-form textarea {
  background: rgba(0, 0, 0, 0.04);
  border-color: rgba(0, 0, 0, 0.1);
  color: var(--ink);
}

[data-theme="light"] .contact-form input:focus,
[data-theme="light"] .contact-form textarea:focus {
  border-color: #c8602a;
}

[data-theme="light"] .btn-submit {
  background: #c8602a;
  color: var(--paper);
}

[data-theme="light"] .location-note {
  color: rgba(13, 15, 18, 0.65);
}

[data-theme="light"] footer {
  background: var(--paper);
  border-top-color: var(--rule);
}

[data-theme="light"] .footer-copy {
  color: rgba(13, 15, 18, 0.5);
}

[data-theme="light"] .footer-links a {
  color: rgba(13, 15, 18, 0.6);
}

[data-theme="light"] .footer-links a:hover {
  color: #c8602a;
}

[data-theme="light"] #experience {
  background: var(--paper);
}

[data-theme="light"] .exp-item {
  border-bottom-color: rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .exp-date {
  color: #c8602a;
}

[data-theme="light"] .exp-type {
  color: rgba(13, 15, 18, 0.5);
}

[data-theme="light"] .exp-rule {
  background: rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .exp-rule::before {
  background: #c8602a;
  border-color: var(--cream);
}

[data-theme="light"] .exp-company {
  color: rgba(13, 15, 18, 0.6);
  text-decoration: none;
}

[data-theme="light"] .exp-company:hover {
  color: #c8602a;
}

[data-theme="light"] .exp-desc {
  color: rgba(13, 15, 18, 0.7);
}

[data-theme="light"] .chip {
  border-color: rgba(0, 0, 0, 0.15);
  color: rgba(13, 15, 18, 0.6);
}

[data-theme="light"] #education {
  background: var(--cream);
}

[data-theme="light"] .btn-primary {
  background: var(--ink);
  color: var(--paper);
}

[data-theme="light"] .btn-primary:hover {
  background: var(--accent);
}

[data-theme="light"] .section-header {
  border-bottom-color: var(--rule);
}

[data-theme="light"] .section-subtitle {
  color: rgba(13, 15, 18, 0.55);
}

.theme-toggle {
  background: none;
  border: 1px solid var(--rule);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  color: var(--mid);
  font-size: 0.9rem;
  line-height: 1;
  transition:
    border-color 0.3s,
    color 0.3s,
    background 0.3s;
  flex-shrink: 0;
}

.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(224, 122, 58, 0.08);
}

.lightbox-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.3s,
    visibility 0.3s;
  cursor: pointer;
}

.lightbox-overlay.active {
  opacity: 1;
  visibility: visible;
}

.lightbox-img {
  max-width: min(90vw, 500px);
  max-height: 85vh;
  border-radius: 8px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
  transform: scale(0.9);
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.lightbox-overlay.active .lightbox-img {
  transform: scale(1);
}

.lightbox-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  color: rgba(255, 255, 255, 0.6);
  font-size: 1.1rem;
  cursor: pointer;
  transition:
    border-color 0.2s,
    color 0.2s;
}

.lightbox-close:hover {
  border-color: #fff;
  color: #fff;
}

body,
nav,
section,
footer,
.stat-box,
.tag,
.prof-tag,
.edu-card,
.project-card,
.skill-category,
#contact,
.contact-form input,
.contact-form textarea {
  transition:
    background-color 0.35s ease,
    color 0.35s ease,
    border-color 0.35s ease;
}

@media (max-width: 900px) {
  nav {
    padding: 1rem 1.5rem;
  }

  .nav-links {
    display: none;
  }

  .nav-right {
    gap: 0;
  }

  #hero {
    grid-template-columns: 1fr;
  }

  .hero-bg-rule {
    display: none;
  }

  .hero-right {
    padding: 2rem 1.5rem 4rem;
  }

  .hero-left {
    padding: 5rem 1.5rem 2rem;
  }

  section {
    padding: 2.5rem 1.25rem;
  }

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

  .project-card.featured {
    grid-column: span 1;
    grid-template-columns: 1fr;
  }

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

  .edu-card {
    flex-direction: column;
    gap: 1rem;
  }

  .contact-form-row {
    flex-direction: column;
  }

  #contact {
    grid-template-columns: 1fr;
  }

  .contact-left,
  .contact-right {
    padding: 2.25rem 1.25rem;
  }

  .exp-item {
    grid-template-columns: 1fr;
  }

  .exp-date-col {
    text-align: left;
    padding-right: 0;
    margin-bottom: 1rem;
  }

  .exp-rule {
    display: none;
  }

  footer {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .section-subtitle {
    display: none;
  }
}

/* ── CHATBOT WIDGET ── */
.chatbot-widget {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 340px;
  max-height: 480px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
  display: none;
  flex-direction: column;
  overflow: hidden;
  z-index: 200;
  animation: chatFadeUp 0.25s ease;
}

.chatbot-widget.open {
  display: flex;
}

@keyframes chatFadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.chatbot-header {
  background: var(--accent);
  padding: 12px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.chatbot-header-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.chatbot-avatar {
  width: 32px;
  height: 32px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.chatbot-title {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  color: #ffffff;
}

.chatbot-subtitle {
  font-family: var(--mono);
  font-size: 10px;
  color: rgba(255, 255, 255, 0.75);
  margin-top: 1px;
}

.chatbot-close {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  font-size: 20px;
  padding: 2px 6px;
  border-radius: 4px;
  line-height: 1;
}

.chatbot-close:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
}

.chatbot-messages {
  flex: 1;
  overflow-y: auto;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 120px;
  max-height: 280px;
  background: var(--cream);
}

.chat-msg {
  max-width: 88%;
  animation: chatFadeUp 0.2s ease;
}

.chat-msg.bot {
  align-self: flex-start;
}

.chat-msg.user {
  align-self: flex-end;
}

.chat-msg-bubble {
  padding: 10px 13px;
  border-radius: 10px;
  font-size: 12.5px;
  line-height: 1.6;
}

.chat-msg.bot .chat-msg-bubble {
  background: var(--steel);
  color: var(--ink);
  border-bottom-left-radius: 3px;
}

.chat-msg.user .chat-msg-bubble {
  background: var(--accent);
  color: #ffffff;
  border-bottom-right-radius: 3px;
}

.chatbot-options {
  padding: 10px 14px 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  border-top: 1px solid var(--rule);
  background: var(--paper);
  flex-shrink: 0;
}

.chatbot-opt-btn {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  padding: 6px 12px;
  border: 1px solid var(--rule);
  border-radius: 20px;
  background: var(--cream);
  color: var(--ink);
  cursor: pointer;
  transition: all 0.15s;
}

.chatbot-opt-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(224, 122, 58, 0.08);
}

.chatbot-fab {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  background: var(--accent);
  border-radius: 50%;
  border: none;
  color: #fff;
  font-size: 22px;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(224, 122, 58, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  transition: transform 0.15s, background 0.15s;
}

.chatbot-fab:hover {
  transform: scale(1.08);
  background: #c86828;
}

.chatbot-fab.hidden {
  display: none;
}

[data-theme="light"] .chatbot-messages {
  background: #f5f3ef;
}

[data-theme="light"] .chat-msg.bot .chat-msg-bubble {
  background: #ffffff;
  border: 1px solid #e3e0da;
  color: #1a1d23;
}

[data-theme="light"] .chatbot-opt-btn {
  background: #ffffff;
  border-color: #d8d4cc;
  color: #1a1d23;
}

[data-theme="light"] .chatbot-opt-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(224, 122, 58, 0.06);
}