:root {
  --bg: #05090c;
  --bg-2: #081015;
  --panel: rgba(8, 17, 22, 0.88);
  --panel-solid: #081116;
  --text: #e7f0ee;
  --muted: #869894;
  --dim: #53635f;
  --cyan: #53d8df;
  --green: #8df7a4;
  --green-2: #29d17d;
  --line: rgba(141, 247, 164, 0.15);
  --line-strong: rgba(83, 216, 223, 0.34);
  --danger: #ff6b6b;
  --max: 1180px;
  --mono: "Cascadia Code", "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.7;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -2;
  background:
    radial-gradient(circle at 15% 14%, rgba(83, 216, 223, .08), transparent 30%),
    radial-gradient(circle at 85% 22%, rgba(141, 247, 164, .06), transparent 28%),
    linear-gradient(180deg, rgba(255, 255, 255, .012), transparent 35%);
}

::selection {
  background: var(--green);
  color: #031008;
}

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

button,
input,
textarea {
  font: inherit;
}

button {
  color: inherit;
}

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

.page-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .45;
  background-image:
    linear-gradient(rgba(83, 216, 223, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(83, 216, 223, .045) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, black 0%, rgba(0, 0, 0, .5) 50%, transparent 100%);
}

.scanline {
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  opacity: .08;
  background: repeating-linear-gradient(0deg, transparent 0 3px, rgba(255, 255, 255, .04) 3px 4px);
}

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

.section {
  padding: 104px 0;
  position: relative;
}

.section-bordered {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(5, 12, 15, .5);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--line);
  background: rgba(5, 9, 12, .88);
  backdrop-filter: blur(18px);
}

.nav {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.logo {
  font-family: var(--mono);
  font-weight: 900;
  letter-spacing: .08em;
  font-size: 1.04rem;
  color: var(--text);
}

.logo-bracket,
.logo-dot {
  color: var(--green);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links a {
  position: relative;
  color: var(--muted);
  font-family: var(--mono);
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .06em;
  transition: color .2s ease;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -8px;
  height: 1px;
  background: var(--green);
  transition: right .2s ease;
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
  right: 0;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line-strong);
  background: transparent;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: var(--green);
  transition: .2s ease;
}

/* Hero */
.hero {
  min-height: calc(100vh - 74px);
  display: grid;
  align-items: center;
  padding-top: 82px;
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.22fr) minmax(330px, .78fr);
  gap: 72px;
  align-items: center;
}

.terminal-kicker,
.code-comment,
.section-code,
.panel-title,
.work-type,
.visual-label,
.certificate-number,
.terminal-header,
.modal-path {
  font-family: var(--mono);
  letter-spacing: .07em;
}

.terminal-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--green);
  font-size: .76rem;
  margin-bottom: 28px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 16px var(--green);
}

.code-comment {
  color: var(--dim);
  font-size: .8rem;
  margin-bottom: 12px;
}

h1,
h2,
h3,
h4 {
  line-height: 1.14;
}

h1 {
  font-family: var(--mono);
  font-size: clamp(3.5rem, 8.2vw, 7.4rem);
  letter-spacing: -.075em;
  font-weight: 900;
  margin-bottom: 30px;
}

h1 span {
  color: var(--cyan);
  text-shadow: 0 0 30px rgba(83, 216, 223, .18);
}

.hero-text {
  max-width: 760px;
  color: #a8b6b2;
  font-size: clamp(1rem, 1.8vw, 1.16rem);
  margin-bottom: 30px;
}

.hero-text strong {
  color: var(--text);
  font-weight: 700;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 11px;
  margin-bottom: 42px;
}

.terminal-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 46px;
  padding: 0 17px;
  border: 1px solid var(--line-strong);
  background: rgba(6, 17, 20, .72);
  color: var(--text);
  font-family: var(--mono);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .04em;
  cursor: pointer;
  position: relative;
  transition: background .2s ease, border-color .2s ease, color .2s ease, transform .2s ease, box-shadow .2s ease;
}

.terminal-btn::before {
  content: "";
  position: absolute;
  inset: 5px;
  border: 1px solid transparent;
  pointer-events: none;
}

.terminal-btn span {
  color: var(--green);
}

.terminal-btn:hover {
  transform: translateY(-2px);
  border-color: var(--green);
  box-shadow: 0 0 28px rgba(141, 247, 164, .1);
}

.terminal-btn-primary {
  background: var(--green);
  color: #03100a;
  border-color: var(--green);
}

.terminal-btn-primary span {
  color: #03100a;
}

.terminal-btn-primary:hover {
  background: #a5ffb7;
  color: #03100a;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--line);
}

.stat {
  padding: 17px 18px;
  min-height: 88px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-right: 1px solid var(--line);
  background: rgba(6, 15, 18, .55);
}

.stat:last-child {
  border-right: 0;
}

.stat strong {
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 1.35rem;
}

.stat span {
  color: var(--dim);
  font-family: var(--mono);
  font-size: .66rem;
  letter-spacing: .06em;
}

.identity-console {
  border: 1px solid var(--line-strong);
  background: rgba(5, 13, 17, .86);
  box-shadow: 0 30px 80px rgba(0, 0, 0, .38), inset 0 0 50px rgba(83, 216, 223, .025);
}

.console-topbar {
  height: 42px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
  font-family: var(--mono);
  color: var(--dim);
  font-size: .68rem;
}

.window-dots {
  display: flex;
  gap: 6px;
}

.window-dots i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--dim);
}

.window-dots i:nth-child(2) {
  background: var(--cyan);
}

.window-dots i:nth-child(3) {
  background: var(--green);
}

.profile-visual {
  position: relative;
  margin: 22px;
  aspect-ratio: 1.05;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--line);
  background: radial-gradient(circle, rgba(83, 216, 223, .11), transparent 55%);
}

.profile-visual::before,
.profile-visual::after {
  content: "";
  position: absolute;
  background: rgba(83, 216, 223, .2);
}

.profile-visual::before {
  width: 1px;
  height: 100%;
  left: 50%;
}

.profile-visual::after {
  height: 1px;
  width: 100%;
  top: 50%;
}

.profile-visual img {
  width: 56%;
  height: auto;

  object-fit: contain;

  filter: saturate(.9) contrast(1.05);

  position: relative;
  z-index: 1;

  border-radius: 0;

  box-shadow:
    0 0 30px rgba(83, 216, 223, 0.12);
}

.target-corner {
  position: absolute;
  width: 34px;
  height: 34px;
  border-color: var(--green);
  opacity: .7;
  z-index: 2;
}

.target-corner.top-left {
  top: 12px;
  left: 12px;
  border-top: 1px solid;
  border-left: 1px solid;
}

.target-corner.top-right {
  top: 12px;
  right: 12px;
  border-top: 1px solid;
  border-right: 1px solid;
}

.target-corner.bottom-left {
  bottom: 12px;
  left: 12px;
  border-bottom: 1px solid;
  border-left: 1px solid;
}

.target-corner.bottom-right {
  bottom: 12px;
  right: 12px;
  border-bottom: 1px solid;
  border-right: 1px solid;
}

.visual-label {
  position: absolute;
  bottom: 10px;
  right: 12px;
  z-index: 3;
  color: var(--green);
  font-size: .63rem;
  background: rgba(5, 9, 12, .8);
  padding: 3px 6px;
}

.console-lines {
  padding: 0 22px 23px;
  display: grid;
  gap: 8px;
  font-family: var(--mono);
  font-size: .72rem;
}

.console-lines p {
  color: #b9c4c0;
  overflow-wrap: anywhere;
}

.console-lines span {
  display: inline-block;
  width: 88px;
  color: var(--dim);
}

.console-lines b {
  color: var(--green);
  font-weight: 700;
}

/* Section headings */
.section-heading {
  margin-bottom: 48px;
  max-width: 800px;
}

.section-heading.compact {
  margin-bottom: 0;
}

.section-code {
  color: var(--green);
  font-size: .72rem;
  margin-bottom: 10px;
}

.section-heading h2 {
  font-family: var(--mono);
  font-size: clamp(2rem, 4.8vw, 3.7rem);
  letter-spacing: -.05em;
  margin-bottom: 14px;
}

.section-heading>p:last-child {
  color: var(--muted);
  max-width: 720px;
}

.cursor {
  color: var(--green);
  animation: blink 1s steps(1) infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 24px;
  align-items: stretch;
}

.terminal-panel {
  border: 1px solid var(--line);
  background: var(--panel);
}

.panel-title {
  padding: 11px 15px;
  border-bottom: 1px solid var(--line);
  color: var(--cyan);
  font-size: .7rem;
}

.bio-panel p {
  padding: 20px 22px 0;
  color: #a7b5b1;
}

.bio-panel p:last-child {
  padding-bottom: 22px;
}

.bio-panel p::before {
  content: "> ";
  color: var(--green);
  font-family: var(--mono);
}

.about-modules {
  display: grid;
  gap: 12px;
}

.mini-module {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 17px;
  padding: 20px;
  border: 1px solid var(--line);
  background: rgba(7, 16, 20, .7);
  transition: border-color .2s ease, transform .2s ease;
}

.mini-module:hover {
  border-color: var(--line-strong);
  transform: translateX(4px);
}

.module-index {
  color: var(--green);
  font-family: var(--mono);
  font-size: .72rem;
}

.mini-module h3 {
  font-family: var(--mono);
  font-size: 1rem;
  margin-bottom: 4px;
}

.mini-module p {
  color: var(--muted);
  font-size: .9rem;
}

/* Work log */
.work-log {
  position: relative;
}

.work-entry {
  display: grid;
  grid-template-columns: 180px 36px 1fr;
  min-height: 170px;
}

.work-date {
  padding-top: 8px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .04em;
  text-align: right;
  padding-right: 20px;
}

.work-marker {
  position: relative;
  display: flex;
  justify-content: center;
}

.work-marker::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--line-strong);
}

.work-marker span {
  width: 11px;
  height: 11px;
  margin-top: 8px;
  z-index: 1;
  background: var(--bg);
  border: 2px solid var(--green);
  box-shadow: 0 0 14px rgba(141, 247, 164, .25);
}

.work-body {
  padding: 0 0 42px 22px;
  max-width: 800px;
}

.work-type {
  color: var(--green);
  font-size: .66rem;
  margin-bottom: 8px;
}

.work-body h3 {
  font-family: var(--mono);
  font-size: 1.45rem;
  margin-bottom: 5px;
}

.work-body h4 {
  color: var(--cyan);
  font-family: var(--mono);
  font-size: .8rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.work-body p:last-child {
  color: var(--muted);
}

/* Projects */
.projects-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 30px;
  margin-bottom: 42px;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 7px;
}

.filter-btn {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  font-family: var(--mono);
  font-size: .67rem;
  font-weight: 700;
  letter-spacing: .04em;
  padding: 8px 11px;
  cursor: pointer;
  transition: .2s ease;
}

.filter-btn:hover,
.filter-btn.active {
  color: #041008;
  background: var(--green);
  border-color: var(--green);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 15px;
}

.project-card {
  position: relative;
  min-height: 365px;
  border: 1px solid var(--line);
  background: rgba(6, 14, 17, .76);
  display: flex;
  flex-direction: column;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
  overflow: hidden;
}

.project-card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(120deg, transparent 35%, rgba(83, 216, 223, .045), transparent 65%);
  transform: translateX(-120%);
  transition: transform .55s ease;
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--line-strong);
  box-shadow: 0 20px 45px rgba(0, 0, 0, .28), 0 0 30px rgba(83, 216, 223, .05);
}

.project-card:hover::after {
  transform: translateX(120%);
}

.project-visual {
  height: 128px;
  border-bottom: 1px solid var(--line);
  position: relative;
  display: grid;
  place-items: center;
  background-image: linear-gradient(rgba(83, 216, 223, .055) 1px, transparent 1px), linear-gradient(90deg, rgba(83, 216, 223, .055) 1px, transparent 1px);
  background-size: 22px 22px;
  overflow: hidden;
}

.project-visual::before {
  content: "";
  width: 90px;
  height: 90px;
  position: absolute;
  border: 1px solid rgba(141, 247, 164, .18);
  transform: rotate(45deg);
}

.project-icon {
  position: relative;
  z-index: 2;
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  background: #071116;
  color: var(--green);
  font-family: var(--mono);
  font-size: .78rem;
  font-weight: 900;
  letter-spacing: .06em;
}

.project-id {
  position: absolute;
  top: 9px;
  left: 10px;
  color: var(--dim);
  font-family: var(--mono);
  font-size: .6rem;
}

.project-status {
  position: absolute;
  top: 9px;
  right: 10px;
  color: var(--green);
  font-family: var(--mono);
  font-size: .58rem;
}

.project-content {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.project-type {
  color: var(--green);
  font-family: var(--mono);
  font-size: .62rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  margin-bottom: 9px;
}

.project-card h3 {
  font-family: var(--mono);
  font-size: 1.02rem;
  margin-bottom: 10px;
}

.project-card p {
  color: var(--muted);
  font-size: .86rem;
  margin-bottom: 18px;
}

.project-tags {
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.project-tags span {
  color: var(--cyan);
  border: 1px solid rgba(83, 216, 223, .16);
  background: rgba(83, 216, 223, .035);
  padding: 4px 7px;
  font-family: var(--mono);
  font-size: .59rem;
}

.project-link {
  margin-top: 15px;
  color: var(--green);
  font-family: var(--mono);
  font-size: .68rem;
  font-weight: 800;
}

/* Stack */
.stack-groups {
  border-top: 1px solid var(--line);
}

.stack-group {
  display: grid;
  grid-template-columns: 280px 1fr;
  border-bottom: 1px solid var(--line);
}

.stack-group-title {
  padding: 26px 20px 26px 0;
  color: var(--text);
  font-family: var(--mono);
  font-size: .76rem;
  font-weight: 800;
}

.stack-group-title span {
  color: var(--green);
  margin-right: 12px;
}

.stack-items {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 20px 0 20px 20px;
  border-left: 1px solid var(--line);
}

.stack-items span {
  padding: 8px 10px;
  color: #b7c5c1;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .012);
  font-family: var(--mono);
  font-size: .67rem;
  transition: .2s ease;
}

.stack-items span:hover {
  color: var(--green);
  border-color: rgba(141, 247, 164, .35);
  background: rgba(141, 247, 164, .035);
}

/* Certificates */
.certificates-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 15px;
}

.certificate-card {
  position: relative;
  min-height: 235px;
  padding: 24px;
  border: 1px solid var(--line);
  background: rgba(6, 14, 17, .78);
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}

.certificate-card:hover {
  transform: translateY(-5px);
  border-color: var(--line-strong);
  background: rgba(8, 20, 24, .88);
}

.certificate-number {
  display: block;
  color: var(--dim);
  font-size: .62rem;
  margin-bottom: 22px;
}

.certificate-icon {
  position: absolute;
  top: 19px;
  right: 20px;
  min-width: 48px;
  padding: 5px 7px;
  text-align: center;
  border: 1px solid var(--line);
  color: var(--cyan);
  font-family: var(--mono);
  font-size: .62rem;
  font-weight: 800;
}

.certificate-card h3 {
  font-family: var(--mono);
  font-size: 1rem;
  margin-bottom: 10px;
  padding-right: 28px;
}

.certificate-card p {
  color: var(--muted);
  font-size: .85rem;
  margin-bottom: 22px;
}

.certificate-card b {
  color: var(--green);
  font-family: var(--mono);
  font-size: .66rem;
}

/* Contact */
.contact-section {
  background: radial-gradient(circle at 65% 30%, rgba(83, 216, 223, .055), transparent 37%);
}

.contact-grid {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 20px;
}

.contact-terminal,
.signal-form {
  border: 1px solid var(--line);
  background: rgba(6, 14, 17, .78);
}

.terminal-header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--cyan);
  font-size: .66rem;
}

.contact-terminal a,
.contact-terminal p {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid rgba(141, 247, 164, .08);
  color: #b9c5c2;
  font-family: var(--mono);
  font-size: .72rem;
  overflow-wrap: anywhere;
}

.contact-terminal a:last-child {
  border-bottom: 0;
}

.contact-terminal a:hover {
  color: var(--green);
  background: rgba(141, 247, 164, .025);
}

.contact-terminal span {
  color: var(--dim);
}

.signal-form {
  padding: 24px;
  display: grid;
  gap: 8px;
}

.signal-form label {
  margin-top: 7px;
  color: var(--green);
  font-family: var(--mono);
  font-size: .65rem;
  letter-spacing: .06em;
}

.signal-form input,
.signal-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 0;
  outline: none;
  background: #050c0f;
  color: var(--text);
  padding: 12px 13px;
  font-family: var(--mono);
  font-size: .78rem;
  resize: vertical;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.signal-form input:focus,
.signal-form textarea:focus {
  border-color: var(--line-strong);
  box-shadow: 0 0 0 2px rgba(83, 216, 223, .04);
}

.form-submit {
  margin-top: 8px;
  justify-self: start;
}

.form-note {
  color: var(--dim);
  font-family: var(--mono);
  font-size: .61rem;
}

/* Footer + utility */
footer {
  border-top: 1px solid var(--line);
  padding: 24px 0;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: var(--dim);
  font-family: var(--mono);
  font-size: .63rem;
  letter-spacing: .04em;
}

.online {
  color: var(--green);
}

.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line-strong);
  background: rgba(5, 12, 15, .9);
  color: var(--green);
  font-family: var(--mono);
  font-size: 1.15rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: .2s ease;
  z-index: 90;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.back-to-top:hover {
  border-color: var(--green);
  background: var(--green);
  color: #03100a;
}

/* Certificate modal */
.certificate-modal {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.certificate-modal.show {
  display: flex;
}

.certificate-modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, .84);
  backdrop-filter: blur(8px);
}

.certificate-modal-box {
  position: relative;
  z-index: 1;
  width: min(1120px, 96vw);
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line-strong);
  background: #050b0e;
  box-shadow: 0 35px 110px rgba(0, 0, 0, .65);
}

.certificate-modal-header {
  min-height: 68px;
  padding: 10px 14px 10px 18px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.modal-path {
  color: var(--dim);
  font-size: .58rem;
}

.certificate-modal-header h3 {
  font-family: var(--mono);
  font-size: .9rem;
}

.certificate-close {
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--green);
  font-size: 1.6rem;
  cursor: pointer;
}

.certificate-viewer {
  padding: 18px;
  overflow: auto;
  display: grid;
  gap: 20px;
}

.certificate-viewer iframe {
  width: 100%;
  height: 70vh;
  border: 1px solid var(--line);
  background: white;
}

.certificate-viewer img {
  max-width: 100%;
  max-height: 70vh;
  margin: auto;
  border: 1px solid var(--line);
}

.certificate-file-box h4 {
  margin: 0 0 8px;
  color: var(--green);
  font-family: var(--mono);
  font-size: .72rem;
}

.certificate-error {
  padding: 30px;
  border: 1px dashed var(--line-strong);
  color: var(--muted);
}

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .6s ease, transform .6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (max-width: 1020px) {
  .hero-layout {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .identity-console {
    max-width: 620px;
  }

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

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

  .stack-group {
    grid-template-columns: 220px 1fr;
  }

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

@media (max-width: 800px) {
  .nav-links {
    position: absolute;
    top: 74px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 20px 18px;
    border-bottom: 1px solid var(--line-strong);
    background: rgba(5, 9, 12, .98);
  }

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

  .nav-links a {
    padding: 13px 3px;
    border-bottom: 1px solid var(--line);
  }

  .nav-links a::after {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .projects-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .filters {
    justify-content: flex-start;
  }

  .work-entry {
    grid-template-columns: 1fr;
    padding-left: 25px;
    border-left: 1px solid var(--line-strong);
    margin-left: 7px;
    min-height: 0;
    margin-bottom: 34px;
  }

  .work-date {
    text-align: left;
    padding: 0 0 8px;
  }

  .work-marker {
    display: none;
  }

  .work-body {
    padding: 0;
  }

  .stack-group {
    grid-template-columns: 1fr;
  }

  .stack-group-title {
    padding: 18px 0 10px;
  }

  .stack-items {
    border-left: 0;
    padding: 0 0 18px;
  }
}

@media (max-width: 620px) {
  .container {
    width: min(calc(100% - 28px), var(--max));
  }

  .section {
    padding: 78px 0;
  }

  .hero {
    padding-top: 62px;
  }

  h1 {
    font-size: clamp(3rem, 18vw, 5rem);
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat:nth-child(2) {
    border-right: 0;
  }

  .stat:nth-child(-n+2) {
    border-bottom: 1px solid var(--line);
  }

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

  .project-card {
    min-height: 340px;
  }

  .section-heading h2 {
    overflow-wrap: anywhere;
  }

  .contact-terminal a,
  .contact-terminal p {
    grid-template-columns: 78px 1fr;
    font-size: .66rem;
  }

  .footer-content {
    flex-direction: column;
  }

  .certificate-modal {
    padding: 10px;
  }

  .certificate-viewer {
    padding: 9px;
  }

  .certificate-viewer iframe {
    height: 72vh;
  }

  .back-to-top {
    right: 14px;
    bottom: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* =========================================================
   V2 DYNAMIC MECHATRONICS MISSION-CONTROL LAYER
   Original interaction language: telemetry + radar + circuits
   ========================================================= */
:root {
  --bg: #05070b;
  --bg-2: #090e16;
  --panel: rgba(8, 14, 24, .86);
  --panel-solid: #080e18;
  --text: #eef5ff;
  --muted: #8c9aad;
  --dim: #546276;
  --cyan: #55b8ff;
  --green: #ffb84f;
  --green-2: #ff8e5a;
  --line: rgba(85, 184, 255, .14);
  --line-strong: rgba(255, 184, 79, .38);
}

body.dynamic-ready {
  cursor: auto;
}

.circuit-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -3;
  pointer-events: none;
  opacity: .62;
}

.page-grid {
  opacity: .32;
  background-image:
    linear-gradient(rgba(85, 184, 255, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(85, 184, 255, .04) 1px, transparent 1px);
  background-size: 64px 64px;
  transform-origin: center top;
  animation: gridDrift 24s linear infinite;
}

@keyframes gridDrift {
  to {
    background-position: 64px 64px;
  }
}

.signal-glow {
  position: fixed;
  width: 420px;
  height: 420px;
  left: 0;
  top: 0;
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
  opacity: .18;
  transform: translate3d(-50%, -50%, 0);
  background: radial-gradient(circle, rgba(85, 184, 255, .25), rgba(255, 184, 79, .07) 32%, transparent 68%);
  filter: blur(10px);
  transition: opacity .25s ease;
}

/* Boot sequence */
.boot-screen {
  position: fixed;
  inset: 0;
  z-index: 3000;
  display: grid;
  place-items: center;
  background: #03050a;
  transition: opacity .6s ease, visibility .6s ease;
}

.boot-screen.done {
  opacity: 0;
  visibility: hidden;
}

.boot-core {
  width: min(520px, calc(100% - 44px));
  font-family: var(--mono);
}

.boot-emblem {
  display: inline-flex;
  gap: 8px;
  align-items: baseline;
  font-size: clamp(2.1rem, 8vw, 4.7rem);
  font-weight: 900;
  letter-spacing: -.08em;
  color: var(--text);
  margin-bottom: 34px;
}

.boot-emblem span {
  color: var(--green);
  font-size: .35em;
  letter-spacing: .08em;
}

.boot-core p {
  color: var(--muted);
  font-size: .72rem;
  letter-spacing: .08em;
  margin-bottom: 11px;
}

.boot-track {
  height: 3px;
  background: rgba(85, 184, 255, .12);
  overflow: hidden;
  position: relative;
}

.boot-track::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(90deg, transparent 0 35px, rgba(255, 255, 255, .11) 35px 36px);
}

.boot-track span {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--cyan), var(--green));
  box-shadow: 0 0 24px rgba(85, 184, 255, .45);
}

.boot-meta {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: var(--dim);
  font-size: .62rem;
  margin-top: 10px;
}

.boot-meta b {
  color: var(--green);
}

/* Right-side page telemetry rail */
.scroll-rail {
  position: fixed;
  right: 11px;
  top: 110px;
  bottom: 92px;
  width: 25px;
  z-index: 85;
  pointer-events: none;
  border-right: 1px solid rgba(85, 184, 255, .12);
}

.scroll-rail>span {
  position: absolute;
  right: -1px;
  top: 0;
  width: 2px;
  height: 0%;
  background: linear-gradient(var(--cyan), var(--green));
  box-shadow: 0 0 16px rgba(85, 184, 255, .42);
}

.scroll-rail i {
  position: absolute;
  right: 7px;
  top: 50%;
  writing-mode: vertical-rl;
  transform: translateY(-50%) rotate(180deg);
  color: var(--dim);
  font-family: var(--mono);
  font-size: .54rem;
  font-style: normal;
  letter-spacing: .15em;
}

/* Header becomes an instrument strip instead of a terminal bar */
.site-header {
  border-bottom-color: rgba(85, 184, 255, .16);
  background: rgba(4, 7, 12, .76);
}

.logo {
  letter-spacing: .03em;
}

.logo::after {
  content: " / MX_CONTROL";
  color: var(--dim);
  font-size: .58rem;
  letter-spacing: .08em;
}

.nav-links a::after {
  background: linear-gradient(90deg, var(--cyan), var(--green));
}

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

/* Hero: asymmetric control-room presentation */
.hero::before {
  content: "SYSTEM / 01";
  position: absolute;
  left: max(14px, calc((100vw - var(--max))/2 - 56px));
  top: 48%;
  transform: rotate(-90deg);
  color: rgba(85, 184, 255, .2);
  font-family: var(--mono);
  font-size: .58rem;
  letter-spacing: .22em;
}

.terminal-kicker {
  color: var(--cyan);
}

.terminal-kicker b {
  color: var(--dim);
  font-weight: 500;
  margin-left: 8px;
}

.status-dot {
  background: var(--cyan);
  box-shadow: 0 0 18px var(--cyan);
  animation: pulseDot 1.8s ease-in-out infinite;
}

@keyframes pulseDot {
  50% {
    transform: scale(1.55);
    opacity: .45;
  }
}

.role-cycle {
  color: var(--green);
  font-weight: 800;
}

.type-caret {
  color: var(--cyan);
  animation: blink .8s steps(1) infinite;
}

h1 span {
  color: var(--cyan);
  text-shadow: 0 0 34px rgba(85, 184, 255, .15);
}

.terminal-btn-primary {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #03101b;
}

.terminal-btn-primary span {
  color: #03101b;
}

.terminal-btn-primary:hover {
  background: #80caff;
}

.terminal-btn:hover {
  border-color: var(--green);
  box-shadow: 0 0 30px rgba(255, 184, 79, .08);
}

.stat strong {
  color: var(--green);
}

.hero-stats {
  position: relative;
  overflow: hidden;
}

.hero-stats::after {
  content: "";
  position: absolute;
  left: -20%;
  top: 0;
  bottom: 0;
  width: 12%;
  background: linear-gradient(90deg, transparent, rgba(85, 184, 255, .09), transparent);
  transform: skewX(-18deg);
  animation: statsSweep 6s ease-in-out infinite;
}

@keyframes statsSweep {

  0%,
  55% {
    left: -20%
  }

  85%,
  100% {
    left: 110%
  }
}

/* Profile radar core */
.identity-console {
  position: relative;
  overflow: hidden;
  border-color: rgba(85, 184, 255, .28);
}

.identity-console::before {
  content: "";
  position: absolute;
  left: -35%;
  right: -35%;
  top: -45%;
  height: 58%;
  background: radial-gradient(ellipse, rgba(85, 184, 255, .12), transparent 66%);
  pointer-events: none;
}

.profile-visual {
  background: radial-gradient(circle, rgba(85, 184, 255, .12), rgba(6, 10, 18, .25) 48%, transparent 70%);
}

.profile-visual img {
  width: 47%;
  border-radius: 50%;
  position: relative;
  z-index: 4;
  box-shadow: 0 0 0 1px rgba(85, 184, 255, .24), 0 0 52px rgba(85, 184, 255, .11);
}

.orbit {
  position: absolute;
  left: 50%;
  top: 50%;
  border-radius: 50%;
  border: 1px solid rgba(85, 184, 255, .19);
  transform: translate(-50%, -50%);
  z-index: 2;
}

.orbit::before {
  content: "";
  position: absolute;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  top: -4px;
  left: 50%;
  background: var(--green);
  box-shadow: 0 0 14px var(--green);
}

.orbit-a {
  width: 62%;
  height: 62%;
  animation: orbitSpin 10s linear infinite;
}

.orbit-b {
  width: 78%;
  height: 78%;
  border-style: dashed;
  animation: orbitSpinReverse 16s linear infinite;
}

.orbit-c {
  width: 92%;
  height: 92%;
  opacity: .55;
  animation: orbitSpin 28s linear infinite;
}

@keyframes orbitSpin {
  from {
    transform: translate(-50%, -50%) rotate(0)
  }

  to {
    transform: translate(-50%, -50%) rotate(360deg)
  }
}

@keyframes orbitSpinReverse {
  from {
    transform: translate(-50%, -50%) rotate(360deg)
  }

  to {
    transform: translate(-50%, -50%) rotate(0)
  }
}

.radar-sweep {
  position: absolute;
  width: 88%;
  height: 88%;
  left: 6%;
  top: 6%;
  border-radius: 50%;
  z-index: 1;
  overflow: hidden;
  animation: orbitSpin 5s linear infinite;
  opacity: .45;
}

.radar-sweep::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 50%;
  height: 2px;
  transform-origin: left center;
  background: linear-gradient(90deg, rgba(85, 184, 255, .7), transparent);
  box-shadow: 0 0 10px rgba(85, 184, 255, .35);
}

.telemetry-strip {
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
}

.telemetry-strip span {
  background: rgba(5, 10, 17, .96);
  padding: 9px 12px;
  color: var(--dim);
  font-family: var(--mono);
  font-size: .55rem;
  letter-spacing: .05em;
}

.telemetry-strip i {
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cyan);
  margin-right: 7px;
  box-shadow: 0 0 8px var(--cyan);
  animation: telemetryBlink 2.4s ease-in-out infinite;
}

.telemetry-strip span:nth-child(2) i {
  animation-delay: .5s;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
}

.telemetry-strip span:nth-child(3) i {
  animation-delay: 1s;
}

.telemetry-strip span:nth-child(4) i {
  animation-delay: 1.5s;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
}

@keyframes telemetryBlink {
  50% {
    opacity: .25
  }
}

/* Section reveal has a technical wipe, not a generic fade */
.section-heading {
  position: relative;
}

.section-heading::after {
  content: "";
  display: block;
  width: min(430px, 60vw);
  height: 1px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--cyan), rgba(85, 184, 255, .08), transparent);
  transform-origin: left;
  transform: scaleX(.2);
  opacity: .35;
  transition: transform .8s ease, opacity .8s ease;
}

.section-heading.is-visible::after,
.reveal.is-visible .section-heading::after {
  transform: scaleX(1);
  opacity: 1;
}

.section-code {
  color: var(--cyan);
}

.section-heading h2::first-letter {
  color: var(--green);
}

/* Work history as active signal path */
.work-log {
  position: relative;
}

.work-log::after {
  content: "";
  position: absolute;
  left: calc(185px + 10px);
  top: 10px;
  width: 1px;
  height: var(--timeline-progress, 0%);
  max-height: calc(100% - 20px);
  background: linear-gradient(var(--cyan), var(--green));
  box-shadow: 0 0 12px rgba(85, 184, 255, .35);
  transition: height .15s linear;
  pointer-events: none;
}

.work-marker span {
  background: var(--cyan);
  box-shadow: 0 0 16px rgba(85, 184, 255, .55);
}

.work-entry.is-visible .work-body {
  animation: signalIn .7s cubic-bezier(.2, .8, .2, 1) both;
}

@keyframes signalIn {
  from {
    clip-path: inset(0 100% 0 0);
    opacity: .3
  }

  to {
    clip-path: inset(0 0 0 0);
    opacity: 1
  }
}

/* Project cards: sensor panels */
.project-card {
  transform-style: preserve-3d;
  will-change: transform;
  border-color: rgba(85, 184, 255, .13);
  background: linear-gradient(145deg, rgba(8, 16, 27, .92), rgba(5, 9, 15, .8));
  overflow: hidden;
}

.project-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at var(--mx, 50%) var(--my, 50%), rgba(85, 184, 255, .14), transparent 34%);
  opacity: 0;
  transition: opacity .2s ease;
}

.project-card::after {
  content: "";
  position: absolute;
  left: -30%;
  top: -4px;
  width: 30%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--green), transparent);
  opacity: .8;
}

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

.project-card:hover::after {
  animation: cardScan 1.15s ease;
}

@keyframes cardScan {
  to {
    left: 110%
  }
}

.project-visual {
  background: linear-gradient(135deg, rgba(85, 184, 255, .06), rgba(255, 184, 79, .025));
}

.project-visual::before {
  border-color: rgba(85, 184, 255, .18);
  animation: projectDiamond 18s linear infinite;
}

@keyframes projectDiamond {
  to {
    transform: rotate(405deg)
  }
}

.project-icon {
  border-color: rgba(255, 184, 79, .36);
  color: var(--green);
  background: rgba(5, 11, 18, .93);
  box-shadow: inset 0 0 28px rgba(255, 184, 79, .025);
}

.project-status {
  color: var(--cyan);
}

.project-link {
  color: var(--green);
}

.project-tags span {
  color: var(--cyan);
}

.filter-btn.active {
  border-color: var(--cyan);
  color: #03101b;
  background: var(--cyan);
}

/* Stack turns into pulsing capability bus */
.stack-items span {
  position: relative;
  overflow: hidden;
}

.stack-items span::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 1px;
  width: var(--skill-charge, 0%);
  background: linear-gradient(90deg, var(--cyan), var(--green));
  transition: width 1.2s cubic-bezier(.2, .8, .2, 1);
}

.stack-groups.is-visible .stack-items span::after {
  --skill-charge: 100%;
}

.stack-items span:hover {
  color: var(--green);
  border-color: rgba(255, 184, 79, .38);
}

/* Certifications look like verified hardware modules */
.certificate-card {
  overflow: hidden;
}

.certificate-card::after {
  content: "VERIFIED";
  position: absolute;
  right: -36px;
  bottom: 19px;
  width: 130px;
  transform: rotate(-45deg);
  text-align: center;
  color: rgba(85, 184, 255, .2);
  border-top: 1px solid rgba(85, 184, 255, .12);
  border-bottom: 1px solid rgba(85, 184, 255, .12);
  font-family: var(--mono);
  font-size: .53rem;
  letter-spacing: .13em;
}

.certificate-card:hover {
  border-color: rgba(255, 184, 79, .42);
}

/* Cursor probe only for mouse/trackpad */
.cursor-probe {
  display: none;
}

@media (hover:hover) and (pointer:fine) {
  .cursor-probe {
    display: block;
    position: fixed;
    width: 22px;
    height: 22px;
    left: 0;
    top: 0;
    z-index: 1100;
    pointer-events: none;
    border: 1px solid rgba(85, 184, 255, .48);
    transform: translate(-50%, -50%);
    transition: width .16s ease, height .16s ease, border-color .16s ease, background .16s ease;
  }

  .cursor-probe::before,
  .cursor-probe::after {
    content: "";
    position: absolute;
    background: rgba(255, 184, 79, .7);
  }

  .cursor-probe::before {
    width: 6px;
    height: 1px;
    left: calc(50% - 3px);
    top: 50%;
  }

  .cursor-probe::after {
    height: 6px;
    width: 1px;
    top: calc(50% - 3px);
    left: 50%;
  }

  .cursor-probe.active {
    width: 38px;
    height: 38px;
    border-color: var(--green);
    background: rgba(255, 184, 79, .035);
  }
}

/* Reveal variants injected by JS */
.reveal {
  transform: translateY(26px) scale(.985);
  filter: blur(5px);
  transition: opacity .75s ease, transform .75s cubic-bezier(.2, .8, .2, 1), filter .75s ease;
}

.reveal.is-visible {
  transform: none;
  filter: none;
}

.reveal[data-reveal="left"] {
  transform: translateX(-34px);
}

.reveal[data-reveal="right"] {
  transform: translateX(34px);
}

.reveal[data-reveal="left"].is-visible,
.reveal[data-reveal="right"].is-visible {
  transform: none;
}

/* Active section pulse */
section.section-active::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 54px;
  background: linear-gradient(var(--cyan), transparent);
  opacity: .65;
}

@media (max-width: 1020px) {
  .scroll-rail {
    display: none;
  }

  .hero::before {
    display: none;
  }

  .work-log::after {
    display: none;
  }
}

@media (max-width: 620px) {
  .logo::after {
    display: none;
  }

  .terminal-kicker b {
    display: none;
  }

  .signal-glow {
    width: 260px;
    height: 260px;
  }

  .telemetry-strip {
    grid-template-columns: 1fr 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .boot-screen {
    display: none;
  }

  .page-grid {
    animation: none;
  }

  .circuit-canvas,
  .signal-glow,
  .cursor-probe {
    display: none !important;
  }

  .orbit,
  .radar-sweep,
  .telemetry-strip i,
  .status-dot,
  .hero-stats::after,
  .project-visual::before {
    animation: none !important;
  }
}

.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-name {
  font-size: 1.55rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #f5f7ff;
  position: relative;
}

.brand-name::after {
  content: "";
  display: block;
  width: 70%;
  height: 2px;
  margin-top: 4px;
  background: linear-gradient(90deg, #4cc9ff, #ffb547);
  border-radius: 10px;
}

.ak-mark {
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  filter: drop-shadow(0 0 10px rgba(76, 201, 255, 0.35));
  transition: transform 0.35s ease, filter 0.35s ease;
}

.ak-mark svg {
  width: 100%;
  height: 100%;
}

.site-logo:hover .ak-mark {
  transform: rotate(6deg) scale(1.08);
  filter: drop-shadow(0 0 16px rgba(255, 181, 71, 0.45));
}

.logo-hex {
  fill: rgba(10, 18, 36, 0.55);
  stroke: #4cc9ff;
  stroke-width: 4;
}

.logo-inner {
  fill: rgba(255, 181, 71, 0.06);
  stroke: rgba(255, 181, 71, 0.8);
  stroke-width: 2;
}

.logo-stroke {
  stroke: #f5f7ff;
  stroke-width: 4.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}

.logo-dot-fill {
  fill: #ffb547;
}

@media (max-width: 768px) {
  .brand-name {
    font-size: 1.25rem;
    letter-spacing: 0.12em;
  }

  .ak-mark {
    width: 42px;
    height: 42px;
  }
}