:root {
  --bg: #030817;
  --bg-elevated: #091222;
  --surface: rgba(12, 22, 38, 0.84);
  --surface-strong: rgba(18, 29, 49, 0.95);
  --surface-soft: rgba(255, 255, 255, 0.055);
  --border: rgba(164, 183, 255, 0.18);
  --border-strong: rgba(164, 113, 255, 0.5);
  --text: #f7fbff;
  --muted: #b9c6d8;
  --subtle: #8190a8;
  --blue: #397dff;
  --cyan: #20d1ff;
  --violet: #935dff;
  --magenta: #cb5cff;
  --green: #25d37a;
  --amber: #ffb02e;
  --red: #ff5c6c;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.36);
  --header-height: 76px;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background:
    linear-gradient(115deg, rgba(57, 125, 255, 0.1), transparent 28%),
    linear-gradient(240deg, rgba(147, 93, 255, 0.12), transparent 36%),
    repeating-linear-gradient(160deg, rgba(255, 255, 255, 0.025) 0 1px, transparent 1px 78px),
    var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  content: "";
  background:
    linear-gradient(90deg, transparent 0 30%, rgba(32, 209, 255, 0.08) 45%, transparent 62%),
    repeating-linear-gradient(112deg, transparent 0 18px, rgba(147, 93, 255, 0.06) 19px, transparent 21px);
  mask-image: linear-gradient(to bottom, transparent 0, #000 12%, #000 84%, transparent 100%);
}

body.light-mode {
  --bg: #f4f7fb;
  --bg-elevated: #ffffff;
  --surface: rgba(255, 255, 255, 0.86);
  --surface-strong: rgba(255, 255, 255, 0.96);
  --surface-soft: rgba(8, 17, 36, 0.045);
  --border: rgba(37, 57, 104, 0.16);
  --border-strong: rgba(57, 125, 255, 0.42);
  --text: #081120;
  --muted: #45556d;
  --subtle: #6a7890;
  --shadow: 0 24px 60px rgba(24, 39, 73, 0.16);
}

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

button,
input,
textarea {
  font: inherit;
}

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

svg {
  width: 1em;
  height: 1em;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

::selection {
  color: #fff;
  background: rgba(147, 93, 255, 0.75);
}

.icon-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.container {
  width: min(1160px, calc(100% - 40px));
  margin-inline: auto;
}

.container.narrow {
  width: min(960px, calc(100% - 40px));
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 50;
  width: 100%;
  min-height: var(--header-height);
  border-bottom: 1px solid rgba(164, 183, 255, 0.12);
  background: rgba(3, 8, 23, 0.82);
  backdrop-filter: blur(18px);
}

body.light-mode .site-header {
  background: rgba(244, 247, 251, 0.82);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1160px, calc(100% - 40px));
  min-height: var(--header-height);
  margin-inline: auto;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0;
}

.brand span:last-child {
  color: #78a1ff;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 30px);
}

.nav-link {
  position: relative;
  padding: 26px 0;
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 700;
  transition: color 180ms ease;
}

.nav-link::after {
  position: absolute;
  bottom: 17px;
  left: 50%;
  width: 0;
  height: 3px;
  border-radius: 999px;
  content: "";
  background: linear-gradient(90deg, var(--magenta), var(--blue));
  transform: translateX(-50%);
  transition: width 180ms ease;
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--text);
}

.nav-link.is-active::after,
.nav-link:hover::after {
  width: 28px;
}

.theme-toggle,
.nav-toggle {
  display: inline-grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: var(--text);
  cursor: pointer;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
  transition: border-color 180ms ease, background 180ms ease, transform 180ms ease;
}

.theme-toggle:hover,
.nav-toggle:hover {
  background: var(--surface-soft);
  border-color: var(--border);
}

.nav-toggle {
  display: none;
  gap: 4px;
}

.nav-toggle span:not(.sr-only) {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 999px;
}

.section {
  position: relative;
  padding: 116px 0;
}

.hero {
  display: grid;
  min-height: 100vh;
  padding-top: calc(var(--header-height) + 60px);
  padding-bottom: 90px;
  overflow: hidden;
  align-items: center;
}

.hero::after {
  position: absolute;
  right: -8vw;
  bottom: 10vh;
  z-index: -1;
  width: min(760px, 80vw);
  height: 260px;
  content: "";
  background:
    repeating-linear-gradient(168deg, transparent 0 18px, rgba(57, 125, 255, 0.22) 19px, transparent 21px),
    linear-gradient(100deg, transparent, rgba(203, 92, 255, 0.16), rgba(32, 209, 255, 0.12), transparent);
  clip-path: polygon(0 48%, 16% 30%, 34% 60%, 54% 22%, 72% 56%, 100% 36%, 100% 70%, 74% 88%, 56% 52%, 36% 86%, 14% 56%, 0 78%);
  opacity: 0.82;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 450px);
  gap: clamp(44px, 8vw, 110px);
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  width: fit-content;
  margin: 0 0 22px;
  padding: 8px 14px;
  color: #dfe8ff;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  background: linear-gradient(90deg, rgba(147, 93, 255, 0.68), rgba(57, 125, 255, 0.52));
  border: 1px solid rgba(164, 183, 255, 0.24);
  border-radius: 8px;
}

.hero h1 {
  max-width: 660px;
  margin: 0;
  font-size: clamp(3rem, 7vw, 5.7rem);
  line-height: 1.02;
  letter-spacing: 0;
}

.hero h1 span {
  color: #9a63ff;
}

.hero h2 {
  margin: 18px 0 0;
  color: var(--text);
  font-size: clamp(1.2rem, 2.2vw, 1.72rem);
  font-weight: 760;
  letter-spacing: 0;
}

.hero-summary {
  max-width: 660px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 1.04rem;
}

.quick-links {
  display: grid;
  max-width: 600px;
  margin-top: 30px;
  gap: 13px;
}

.quick-links a,
.contact-details a {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 0.94rem;
}

.quick-links svg,
.contact-details svg {
  color: #83a7ff;
}

.hero-actions,
.social-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 30px;
}

.btn {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 22px;
  color: #fff;
  font-size: 0.92rem;
  font-weight: 800;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: 8px;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.btn svg {
  width: 1.05rem;
  height: 1.05rem;
}

.btn:hover,
.social-row a:hover,
.project-row:hover,
.publication-card:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(100deg, var(--magenta), var(--blue));
  box-shadow: 0 16px 40px rgba(70, 105, 255, 0.28);
}

.btn-ghost {
  color: var(--text);
  background: rgba(255, 255, 255, 0.035);
  border-color: var(--border);
}

.btn-ghost:hover {
  border-color: rgba(147, 93, 255, 0.7);
  background: rgba(147, 93, 255, 0.12);
}

.social-row a {
  display: inline-grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--text);
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 50%;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.social-row a:hover {
  color: #fff;
  background: rgba(147, 93, 255, 0.16);
  border-color: rgba(147, 93, 255, 0.66);
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.portrait-card {
  position: relative;
  width: min(100%, 410px);
  min-height: 540px;
  padding: 18px;
  overflow: hidden;
  isolation: isolate;
  background:
    linear-gradient(155deg, rgba(255, 255, 255, 0.13), transparent 28%),
    linear-gradient(35deg, rgba(57, 125, 255, 0.2), rgba(203, 92, 255, 0.2)),
    rgba(7, 14, 28, 0.82);
  border: 1px solid rgba(218, 226, 255, 0.26);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.portrait-card::before {
  position: absolute;
  inset: auto 0 0;
  z-index: -1;
  height: 44%;
  content: "";
  background: linear-gradient(0deg, rgba(3, 8, 23, 0.92), transparent);
}

.portrait-card img,
.about-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
}

.portrait-card img {
  min-height: 500px;
  filter: saturate(1.05) contrast(1.04);
}

.experience-badge {
  position: absolute;
  top: 36px;
  right: 32px;
  z-index: 2;
  padding: 13px 16px;
  color: #fff;
  text-align: center;
  font-size: 0.72rem;
  line-height: 1.3;
  background: rgba(93, 53, 157, 0.68);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  backdrop-filter: blur(16px);
}

.experience-badge strong {
  display: block;
  font-size: 1.4rem;
  line-height: 1;
}

.signature {
  position: absolute;
  right: 34px;
  bottom: 104px;
  color: #a381ff;
  font-family: "Segoe Script", "Brush Script MT", cursive;
  font-size: 1.25rem;
  transform: rotate(-7deg);
}

.stat-strip {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  padding: 18px;
  background: rgba(13, 21, 35, 0.76);
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(18px);
}

.stat-strip span {
  text-align: center;
  color: rgba(226, 235, 255, 0.82);
  font-size: 0.78rem;
}

.stat-strip strong {
  display: block;
  color: #fff;
  font-size: 1.65rem;
  line-height: 1.1;
}

.scroll-cue {
  position: absolute;
  bottom: 34px;
  left: 50%;
  width: 22px;
  height: 38px;
  border: 2px solid rgba(255, 255, 255, 0.75);
  border-radius: 999px;
  transform: translateX(-50%);
}

.scroll-cue::after {
  position: absolute;
  top: 8px;
  left: 50%;
  width: 4px;
  height: 8px;
  content: "";
  background: #fff;
  border-radius: 999px;
  transform: translateX(-50%);
  animation: cue 1.5s ease-in-out infinite;
}

@keyframes cue {
  0%, 100% {
    opacity: 0.4;
    transform: translate(-50%, 0);
  }

  50% {
    opacity: 1;
    transform: translate(-50%, 10px);
  }
}

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

.section-heading.compact {
  margin: 46px 0 22px;
}

.section-heading h2,
.section-heading h3 {
  position: relative;
  margin: 0;
  width: fit-content;
  font-size: clamp(1.9rem, 3.2vw, 2.6rem);
  line-height: 1.1;
  letter-spacing: 0;
}

.section-heading h3 {
  font-size: 1.5rem;
}

.section-heading h2::after,
.section-heading h3::after {
  position: absolute;
  left: 0;
  bottom: -14px;
  width: 44px;
  height: 3px;
  content: "";
  background: linear-gradient(90deg, var(--magenta), var(--cyan));
  border-radius: 999px;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(260px, 360px);
  gap: clamp(36px, 7vw, 80px);
  align-items: start;
}

.about-copy > p {
  max-width: 660px;
  margin: 0 0 28px;
  color: var(--muted);
}

.info-panel {
  display: grid;
  width: min(100%, 560px);
  margin: 0;
  padding: 24px;
  gap: 15px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.info-panel div {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  gap: 12px;
}

.info-panel dt {
  color: var(--text);
  font-weight: 800;
}

.info-panel dd {
  min-width: 0;
  margin: 0;
  color: var(--muted);
  overflow-wrap: anywhere;
}

.info-panel a:hover {
  color: #8fb0ff;
}

.about-photo {
  width: min(100%, 340px);
  min-height: 450px;
  padding: 16px;
  justify-self: end;
  background:
    linear-gradient(160deg, rgba(203, 92, 255, 0.22), transparent 55%),
    var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.about-photo img {
  min-height: 420px;
}

.service-grid,
.skills-grid {
  display: grid;
  gap: 22px;
}

.service-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.skills-grid {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.feature-card,
.skill-card,
.education-card,
.timeline-card,
.project-row,
.award-card,
.publication-card,
.contact-details,
.contact-form {
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.02)),
    var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 18px 55px rgba(0, 0, 0, 0.18);
}

.feature-card,
.skill-card {
  padding: 26px;
}

.feature-card h4,
.skill-card h3 {
  margin: 16px 0 12px;
  font-size: 1rem;
}

.feature-card p,
.skill-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.card-icon,
.skill-icon,
.project-icon,
.award-icon,
.publication-heading span {
  display: inline-grid;
  place-items: center;
  color: #fff;
  background: rgba(147, 93, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
}

.card-icon,
.skill-icon {
  width: 46px;
  height: 46px;
  font-size: 1.55rem;
}

.blue {
  color: #76a2ff;
  background: rgba(57, 125, 255, 0.14);
}

.violet {
  color: #b58cff;
  background: rgba(147, 93, 255, 0.15);
}

.green {
  color: #5ef0a1;
  background: rgba(37, 211, 122, 0.12);
}

.amber {
  color: #ffc05d;
  background: rgba(255, 176, 46, 0.12);
}

.red {
  color: #ff8792;
  background: rgba(255, 92, 108, 0.12);
}

.skill-card {
  grid-column: span 2;
}

.skill-card.large {
  grid-column: span 3;
}

.education-list {
  display: grid;
  gap: 16px;
}

.education-card {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  align-items: center;
  gap: 22px;
  padding: 28px;
}

.education-icon {
  display: inline-grid;
  width: 58px;
  height: 58px;
  place-items: center;
  color: #a88bff;
  font-size: 1.8rem;
  background: rgba(147, 93, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
}

.education-card h3 {
  margin: 0 0 8px;
  color: #c8b7ff;
  font-size: 1.16rem;
}

.education-card p {
  margin: 8px 0 0;
  color: var(--muted);
}

.timeline {
  position: relative;
  display: grid;
  gap: 28px;
  margin-top: 44px;
}

.timeline::before {
  position: absolute;
  top: 46px;
  bottom: 46px;
  left: 151px;
  width: 1px;
  content: "";
  background: linear-gradient(to bottom, rgba(147, 93, 255, 0.78), rgba(57, 125, 255, 0.18));
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 128px 46px minmax(520px, 1fr);
  align-items: start;
  gap: 24px;
}

.timeline-item::before {
  position: absolute;
  top: 38px;
  left: 142px;
  z-index: 1;
  width: 18px;
  height: 18px;
  content: "";
  background: var(--violet);
  border: 3px solid var(--bg);
  border-radius: 50%;
  box-shadow: 0 0 0 2px rgba(147, 93, 255, 0.52);
}

.timeline-date {
  width: 112px;
  min-height: 88px;
  margin-top: 0;
  margin-left: 0;
  padding: 14px 10px;
  color: #97b4ff;
  text-align: center;
  font-weight: 800;
  background: rgba(57, 125, 255, 0.09);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: grid;
  align-content: center;
  justify-self: end;
}

.timeline-date span {
  color: var(--muted);
  font-size: 0.84rem;
}

.timeline-card {
  grid-column: 3;
  width: 100%;
  min-width: 0;
  padding: 28px 32px;
}

.timeline-card h3 {
  margin: 0 0 18px;
  font-size: 1.08rem;
}

.timeline-card ul {
  display: grid;
  margin: 0;
  padding-left: 20px;
  gap: 12px;
  color: var(--muted);
  font-size: 0.95rem;
}

.center-action {
  display: flex;
  justify-content: center;
  margin-top: 36px;
}

.project-list {
  display: grid;
  gap: 14px;
}

.project-row {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) 24px;
  align-items: center;
  gap: 20px;
  padding: 20px;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.publication-list {
  display: grid;
  gap: 14px;
}

.publication-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 24px;
  align-items: center;
  gap: 20px;
  min-height: 92px;
  padding: 22px 24px;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.project-row:hover,
.publication-card:hover {
  border-color: rgba(147, 93, 255, 0.48);
  background:
    linear-gradient(145deg, rgba(147, 93, 255, 0.12), rgba(57, 125, 255, 0.04)),
    var(--surface);
}

.project-icon {
  width: 52px;
  height: 52px;
  color: #fff;
  font-size: 1.42rem;
  background: linear-gradient(135deg, rgba(203, 92, 255, 0.88), rgba(57, 125, 255, 0.74));
}

.project-row h3,
.publication-card h3 {
  margin: 0 0 6px;
  color: #c8b7ff;
  font-size: 1rem;
}

body.light-mode .project-row h3,
body.light-mode .publication-card h3,
body.light-mode .timeline-date {
  color: #6e50e8;
}

body.light-mode .timeline-date span {
  color: #40516a;
}

.project-row p,
.publication-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.row-arrow {
  color: var(--text);
  font-size: 1.45rem;
}

.award-card {
  position: relative;
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) 80px;
  align-items: center;
  gap: 26px;
  margin-top: 44px;
  padding: 34px;
  overflow: hidden;
  background:
    linear-gradient(100deg, rgba(147, 93, 255, 0.24), rgba(57, 125, 255, 0.08)),
    var(--surface);
  border-color: rgba(147, 93, 255, 0.58);
}

.award-icon {
  width: 62px;
  height: 62px;
  color: var(--amber);
  font-size: 2.2rem;
  background: rgba(255, 176, 46, 0.14);
}

.award-card h3 {
  margin: 0;
  font-size: 1.14rem;
}

.award-card p {
  margin: 8px 0 0;
  color: var(--muted);
}

.award-link {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  padding: 10px 14px;
  color: #fff;
  font-size: 0.88rem;
  font-weight: 800;
  background: linear-gradient(100deg, var(--magenta), var(--blue));
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  box-shadow: 0 14px 30px rgba(70, 105, 255, 0.22);
}

.award-link:hover {
  transform: translateY(-1px);
}

.muted {
  color: var(--subtle) !important;
}

.medal {
  position: relative;
  width: 58px;
  height: 58px;
  justify-self: center;
  background: radial-gradient(circle, #fff0a4 0 15%, #ffb02e 16% 54%, #8a4cff 55% 58%, transparent 59%);
  border-radius: 50%;
}

.medal::before,
.medal::after {
  position: absolute;
  top: 46px;
  width: 17px;
  height: 38px;
  content: "";
  background: #f0644f;
  clip-path: polygon(0 0, 100% 0, 72% 100%, 50% 76%, 28% 100%);
}

.medal::before {
  left: 12px;
  transform: rotate(14deg);
}

.medal::after {
  right: 12px;
  transform: rotate(-14deg);
}

.publication-heading {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 48px 0 22px;
}

.publication-heading span {
  width: 40px;
  height: 40px;
  color: #a88bff;
  font-size: 1.4rem;
}

.publication-heading h3 {
  margin: 0;
  font-size: 1.9rem;
}

.contact-section {
  padding-bottom: 70px;
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) minmax(300px, 360px) minmax(180px, 300px);
  gap: clamp(24px, 5vw, 60px);
  align-items: start;
}

.contact-details {
  display: grid;
  max-width: 340px;
  padding: 16px;
  gap: 8px;
}

.contact-details a {
  padding: 8px;
  border-radius: 8px;
  transition: background 180ms ease;
}

.contact-details a:hover {
  background: var(--surface-soft);
}

.contact-details strong {
  display: block;
  color: var(--text);
  font-size: 0.78rem;
}

.contact-details span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.contact-form {
  display: grid;
  gap: 12px;
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
}

.contact-form label {
  display: grid;
  gap: 6px;
}

.contact-form label span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  outline: none;
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.contact-form input {
  min-height: 44px;
  padding: 0 14px;
}

.contact-form textarea {
  resize: vertical;
  min-height: 130px;
  padding: 12px 14px;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: rgba(147, 93, 255, 0.72);
  box-shadow: 0 0 0 4px rgba(147, 93, 255, 0.12);
}

.contact-form .btn {
  width: 100%;
  margin-top: 4px;
}

.form-status {
  min-height: 22px;
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.paper-plane {
  display: grid;
  min-height: 250px;
  place-items: center;
}

.paper-plane svg {
  width: min(260px, 100%);
  height: auto;
  color: #9d79ff;
  filter: drop-shadow(0 24px 42px rgba(147, 93, 255, 0.24));
  stroke-width: 2.2;
}

.paper-plane path:first-child {
  fill: rgba(147, 93, 255, 0.2);
}

.site-footer {
  padding: 28px 0;
  color: var(--muted);
  background: rgba(9, 18, 34, 0.72);
  border-top: 1px solid rgba(164, 183, 255, 0.1);
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  font-size: 0.86rem;
}

.footer-grid p {
  margin: 0;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 520ms ease, transform 520ms ease;
}

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 980px) {
  .nav-toggle {
    display: inline-grid;
  }

  .nav-links {
    position: absolute;
    top: calc(var(--header-height) - 1px);
    right: 20px;
    left: 20px;
    display: grid;
    max-height: 0;
    overflow: hidden;
    gap: 0;
    background: rgba(5, 12, 25, 0.96);
    border: 1px solid transparent;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: max-height 220ms ease, border-color 220ms ease;
  }

  body.light-mode .nav-links {
    background: rgba(255, 255, 255, 0.96);
  }

  .nav-links.is-open {
    max-height: 520px;
    border-color: var(--border);
  }

  .nav-link {
    padding: 14px 18px;
  }

  .nav-link::after {
    bottom: 9px;
  }

  .theme-toggle {
    margin: 8px 12px 14px;
    justify-self: start;
  }

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

  .hero-visual {
    order: -1;
  }

  .portrait-card {
    width: min(100%, 360px);
    min-height: 480px;
  }

  .portrait-card img {
    min-height: 440px;
  }

  .about-photo {
    justify-self: start;
  }

  .service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .skills-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .skill-card,
  .skill-card.large {
    grid-column: span 1;
  }

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

  .timeline::before {
    left: 20px;
  }

  .timeline-item {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 16px;
  }

  .timeline-item::before {
    top: 18px;
    left: 11px;
  }

  .timeline-date {
    grid-column: 2;
    width: fit-content;
    min-height: auto;
    justify-self: start;
    margin-bottom: 8px;
    padding: 10px 14px;
  }

  .timeline-card {
    grid-column: 2;
  }

  .paper-plane {
    min-height: auto;
    justify-content: start;
  }

  .paper-plane svg {
    max-width: 180px;
  }
}

@media (max-width: 720px) {
  :root {
    --header-height: 68px;
  }

  .container,
  .container.narrow,
  .site-nav {
    width: min(100% - 28px, 1160px);
  }

  .section {
    padding: 84px 0;
  }

  .hero {
    padding-top: calc(var(--header-height) + 34px);
  }

  .hero h1 {
    font-size: clamp(2.55rem, 14vw, 4rem);
  }

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

  .btn {
    width: 100%;
  }

  .portrait-card {
    min-height: 430px;
    padding: 12px;
  }

  .portrait-card img {
    min-height: 405px;
  }

  .stat-strip {
    padding: 14px 10px;
  }

  .stat-strip strong {
    font-size: 1.25rem;
  }

  .signature {
    bottom: 88px;
    font-size: 1rem;
  }

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

  .info-panel {
    padding: 18px;
  }

  .info-panel div {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .timeline-item {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 12px;
    padding-left: 0;
  }

  .timeline-item::before {
    top: 17px;
    left: 4px;
  }

  .timeline-date {
    grid-column: 2;
    padding: 10px 14px;
    text-align: left;
  }

  .timeline-card {
    grid-column: 2;
    padding: 22px;
  }

  .project-row {
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 14px;
    padding: 18px;
  }

  .publication-card {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
    padding: 18px;
  }

  .row-arrow {
    display: none;
  }

  .award-card {
    grid-template-columns: 56px minmax(0, 1fr);
    padding: 22px;
  }

  .education-card {
    grid-template-columns: 1fr;
    padding: 22px;
  }

  .award-icon {
    width: 52px;
    height: 52px;
    font-size: 1.7rem;
  }

  .medal {
    display: none;
  }

  .footer-grid {
    display: grid;
  }
}