@import url('https://fonts.googleapis.com/css2?family=Pixelify+Sans:wght@400;500;600;700&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,700;1,9..40,400&display=swap');

/* ── Variables ── */
:root {
  --bg:      #0d0b1a;
  --bg2:     #111020;
  --orange:  #e84b1e;
  --white:   #f0eee8;
  --gray:    #95939b;
  --border:  rgba(255,255,255,0.11);
  --font0:    'Courier New', Courier, monospace;
  --font1:   'Pixelify Sans', sans-serif;
  --font2:   'DM Sans', sans-serif;
  --xl-font: 96px;
  --l-font: 64px;
  --m-font: 32px;
  --s-font: 24px;
  --xs-font: 14px;
  --guide:   5rem;
  /* 3-way max: floor at 7rem · responsive 10vw centering · hard 1920px cap on ultra-wide */
  --px:      max(calc(var(--guide) + 2rem), 10vw, calc(50vw - 960px + var(--guide) + 2rem));
}


/* ── Base ── */
/* ── BASE ── */

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  width: 100%;
  background: var(--bg);
}

html {
  scrollbar-gutter: stable;
}


html::selection {
    background: var(--orange);
    color: var(--white);
  }


body {
  position: relative;
  color: var(--white);
  font-family: var(--font2);
  font-size: var(--s-font);
  line-height: 1.65;
  overflow-x: hidden;
}

/* ── 3 VERTICAL GUIDE LINES ── */

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 998;

  background-image:
    linear-gradient(rgba(255,255,255,0.1), rgba(255,255,255,0.1)),
    linear-gradient(rgba(255,255,255,0.1), rgba(255,255,255,0.1)),
    linear-gradient(rgba(255,255,255,0.1), rgba(255,255,255,0.1));

  background-repeat: no-repeat;
  background-size: 1px 100%, 1px 100%, 1px 100%;

  /* guide lines track --px minus the 2rem content offset */
  background-position:
    max(var(--guide), 9vw, calc(50vw - 960px + var(--guide))) 0,
    50% 0,
    calc(100% - max(var(--guide), 9vw, calc(50vw - 960px + var(--guide)))) 0;
}

/* ── NOISE OVERLAY ── */

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  opacity: 0.03;

  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 130px;
}

/* ── MAKE CONTENT STAY ABOVE LINES ── */

#nav,
section,
footer {
  position: relative;
  z-index: 1;
}

/* ── IMPORTANT:
REMOVE solid backgrounds like:
background-color: #202020;

REPLACE THEM WITH transparent backgrounds like this:
*/

/* example */

#intro,
#folders
{
  background: rgba(32, 32, 32, 0.88);
}
footer {
  background: url('img/bg-home-1.png') center/cover no-repeat;
}
/* if needed for hero/discover/outro too */

#hero,
#discover,
#outro {
  position: relative;
  z-index: 1;
}

body {
  background: var(--bg);
  color: var(--white);
  font-family: var(--font2);
  font-size: var(--s-font);
  line-height: 1.65;
}

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

/* noise overlay */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 130px;
}

/**/

/* ── Shared utilities ── */
.u-line {
  width: 34px;
  height: 3px;
  background: var(--orange);
  margin-bottom: 22px;
}

.btn-orange {
  width: fit-content;
  display: inline-block;
  background: var(--orange);
  color: var(--white);
  font-family: var(--font);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 11px 24px;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.15s;
}
.btn-orange:hover { opacity: 0.82; transform: translateY(-2px); }

/* scroll-reveal */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── NAV ── */
#nav {
  position: fixed;
  top: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 500;
  width: 90%;
  max-width: 1728px;
}
.nav-logo-img {
  width: var(--m-font);
}

.nav-inner {
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-radius: 50px;
  box-shadow: none;
  padding: 32px 64px;
  display: flex;
  flex-direction: row;
  align-content: center;
  justify-content: space-between;
  justify-items: center;
  align-items: center;
  gap: 36px;
  transition: background 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}

#nav.nav--scrolled .nav-inner,
#nav.nav--open .nav-inner {
  background: linear-gradient(90deg, rgba(153, 153, 153, 0.8) 0%, rgba(255, 255, 255, 0.8) 100%);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0px 4px 11px rgba(0, 0, 0, 0.25);
}

.nav-logo {
  align-items: center;
  opacity: 0.9;
  transition: opacity 0.2s;
}
.nav-logo:hover { opacity: 1; }

.nav-links {
  font-family: var(--font2);
  font-weight: 500;
  color: var(--white);
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: var(--xs-font);
  line-height: 1;
  transition: color 0.4s ease;
}

#nav.nav--scrolled .nav-links,
#nav.nav--open .nav-links {
   color: #252525; 
} 

.nav-links li {
  display: flex;
  align-items: center;
}

.nav-links a {
  display: flex;
  align-items: center;
  font-size: var(--s-font);
  line-height: 1;
  transition: opacity 0.2s;
}
.nav-links a:hover { opacity: 1; }

/* ── HAMBURGER ── */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  flex-shrink: 0;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease, background 0.4s ease;
}

#nav.nav--scrolled .nav-hamburger span,
#nav.nav--open .nav-hamburger span {
  background: var(--bg);
}

#nav.nav--open .nav-hamburger span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
#nav.nav--open .nav-hamburger span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
#nav.nav--open .nav-hamburger span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── HERO ── */
#hero {
  padding: 120px var(--px) 100px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 48px;
  background: url('img/bg-home-2.png') center/cover no-repeat;
}

 @media (max-width: 860px) {
  #hero {
  display: flex;
  flex-direction: row;
  gap: unset;
  }
  .hero-title {
  text-wrap: unset;
  }
  #hero > div.hero-right{
  display: none;
  }
  #hero > div.hero-left{
  margin: 0;
  }
}

.hero-left {
  display: flex;
  flex-direction: column;
  width: min-content;

}

.counter {
    margin-top: clamp(48px, 10vw, var(--xl-font));
    font-size: clamp(48px, 10vw, var(--xl-font));
    font-family: var(--font1);
}

.counter p{
  color: var(--white);
  line-height: 0.9;
}
.counter  span {
  color: var(--orange);
}

.hero-title {
  font-family: var(--font2);
  font-size: clamp(40px, 5.5vw, var(--l-font));
  text-transform: uppercase;
  font-weight: 900;
}

.hero-text {
  margin: clamp(40px, 5.5vw, var(--l-font) ) 0 ;
}

.hero-by {
  font-size: var(--xs-font);
  color: var(--gray);
}

.hero-tags {
  font-size: var(--s-font);
  color: var(--white);
}

.hero-right {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;

}

.polaroid {
  padding: 14px 14px 44px;
  transform: rotate(3deg);
  max-width: 350px;
  transition: transform 0.3s;
}
.polaroid:hover { transform: rotate(0deg) scale(1.02); }

.polaroid img { width: 100%; display: block; filter: grayscale(100%) contrast(1.1); }

.photo-placeholder {
  display: none;
  width: 182px;
  height: 220px;
  background: linear-gradient(150deg, #2e2a44 0%, #0d0b1a 100%);
}

/* ── INTRO ── */
#intro {
  padding: 110px var(--px);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
  background-color: #202020;
}

/* Diamond diagram */
.diamond{
    display: flex;
    justify-content: center;
}
.diagram-wrap {
  position: relative;
  width: 260px;
  height: 280px;
  margin: 0 auto;
}

.diagram-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.dlabel {
  position: absolute;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  white-space: nowrap;
  line-height: 1.3;
}

.dlabel.top {
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  color: var(--gray);
  text-align: center;
  white-space: normal;
  width: 100px;
  text-align: center;
}
.dlabel.left {
  top: 46%;
  left: -4px;
  transform: translateY(-50%);
  background: #1e1c38;
  border: 1px solid var(--border);
  padding: 3px 9px;
}
.dlabel.right {
  top: 34%;
  right: 10px;
  background: #1e1c38;
  border: 1px solid var(--border);
  padding: 3px 9px;
}
.dlabel.center {
  top: 55%;
  left: 50%;
  transform: translateX(-50%);
  background: #1e1c38;
  border: 1px solid var(--border);
  padding: 3px 9px;
}
.dlabel.br {
  bottom: 18%;
  right: 6px;
  background: #1e1c38;
  border: 1px solid var(--border);
  padding: 3px 9px;
}
.dlabel.bottom {
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  color: var(--orange);
  font-size: 9px;
  text-align: center;
}

/* Intro text */
.intro-text h2 {
  font-family: var(--font1);
  font-size: var(--l-font);  
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}

.intro-text p {
  color: var(--gray);

  margin-bottom: 12px;
}
.intro-text p strong { color: var(--white); }

/* ── WORKS PAGE ── */
#experiments,
#professional-works {
  padding: 110px var(--px);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: start;
  background: rgba(32, 32, 32, 0.88);
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
}

.custom-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--xs-font);
}

.custom-table th {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray);
  font-weight: 700;
}

.custom-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--white);
  vertical-align: middle;
}

.custom-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.04);
}

/* ── DISCOVER ── */
#discover {
  padding: 110px var(--px);
  background: url('img/bg-grey.png') center/cover no-repeat;
}

#discover  h2 {
    font-family: var(--font1);
  font-size: var(--l-font);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}

#folders  h2 {
    font-family: var(--font1);
  font-size: var(--l-font);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}

.carousel { margin-top: 40px; }

.carousel-track {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.card {
  border: 1px solid var(--border);
  cursor: pointer;
  transition: border-color 0.22s, transform 0.22s;
  overflow: hidden;
}
.card:hover { border-color: var(--orange); transform: translateY(-4px); }

.card-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: linear-gradient(140deg, #1c1a30 0%, #0e0d1c 100%);
  overflow: hidden;
}

.card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: grayscale(20%);
  transition: filter 0.3s, transform 0.3s;
}
.card:hover .card-img img { filter: grayscale(0%); transform: scale(1.03); }

.card-label {
  padding: 14px 16px;
  font-size: var(--xs-font);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.carousel-nav {
  display: flex;
  gap: 10px;
  margin-top: 26px;
}

.c-btn {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--white);
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s, background 0.2s;
}
.c-btn:hover { border-color: var(--orange); background: rgba(232,75,30,0.08); }

/* ── FOLDERS ── */
#folders {
  padding: 200px var(--px);
  background-color: #202020;
}

.folder-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}

.folder-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* container for stacked folders */
.folder-icon {
  position: relative;
  width: 351px;
  height: 280px;
  max-width: 100%;
}

/* all images stacked together */
.folder-icon img {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  max-width: 100%;
  height: auto;
  display: block;
  transition: transform 0.3s ease;
}

/* back folder */
.folder-back {
  z-index: 1;
}

/* middle stuff */
.folder-stuff {
  z-index: 2;
  top: 30px;
  width: 150px;
}

/* front folder */
.folder-front {
  z-index: 3;
}

/* hover effect */
.folder-stuff:hover {
  transform: translateX(-50%) translateY(-10px);
}

.folder-label {
  padding: 14px 16px;
  font-size: var(--xs-font);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ── TABLET ── */
@media (max-width: 1024px) {
  .folder-grid {
    gap: 32px;
  }

  .folder-icon {
    width: 300px;
    height: 240px;
  }

  .folder-stuff {
    bottom: 100px;
  }
}

/* ── MOBILE ── */
@media (max-width: 768px) {
  .folder-grid {
    grid-template-columns: 1fr; /* only 1 folder per row */
    gap: 40px;
  }

  .folder-icon {
    width: 100%;
    max-width: 280px;
    height: 220px;
  }

  .folder-stuff {
    bottom: 80px;
  }

  .folder-label {
    font-size: var(--xs-font);
  }
}

/* ── SMALL MOBILE ── */
@media (max-width: 480px) {
  .folder-icon {
    max-width: 240px;
    height: 190px;
  }

  .folder-stuff {
    bottom: 65px;
  }
}

/* ── OUTRO ── */
#outro {
  padding: 110px var(--px);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  background: url('img/bg-grey.png') center/cover no-repeat;
}

.outro-left h2 {
  font-family: var(--font1);
  font-size: var(--l-font);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}

.outro-left p {
  color: var(--gray);
  line-height: 1.85;
  margin-bottom: 20px;
}

.outro-left .location { color: var(--white); margin-bottom: 6px; }
.outro-left .discuss  { color: var(--gray); margin-bottom: 4px; }

.cal-link {
  font-size: 11px;
  color: var(--gray);
  word-break: break-all;
  transition: color 0.2s;
}
.cal-link:hover { color: var(--orange); }

.contact-heading {
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 28px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.contact-heading::after {
  content: '↓';
  color: var(--orange);
}
.form-message {
  margin-top: 20px;
}
.form-group { margin-bottom: 16px; }

.form-group input,
.form-group textarea {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border);
  color: var(--white);
  font-family: var(--font);
  font-size: 13px;
  padding: 10px 0;
  outline: none;
  resize: none;
  transition: border-color 0.2s;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--gray); }
.form-group input:focus,
.form-group textarea:focus { border-bottom-color: var(--orange); }


/* ── FOOTER ── */
footer {
  padding: 20px var(--px);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--gray);
  background-color: #202020;
}

.footer-li {
  width: 30px;
  height: 30px;
  background: #0077b5;
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.2s;
}
.footer-li:hover { opacity: 0.8; }

/* ── ARTICLE CONTENT BLOCKS ── */
.article-block {
  padding: 110px var(--px);
  background-color: #202020;
}

.article-block h2 {
  font-family: var(--font1);
  font-size: var(--l-font);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}

.article-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  margin-top: 48px;
  align-items: start;
}

.article-text {
  display: flex;
  flex-direction: column;
  gap: 20px;
  color: var(--gray);
  font-size: var(--xs-font);
  line-height: 1.8;
}

.article-p {
  color: var(--gray);
  font-size: var(--xs-font);
  line-height: 1.8;
}

.article-imgs-stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.article-imgs-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.article-img-placeholder {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.article-imgs-stack .article-img-placeholder {
  aspect-ratio: 3 / 4;
}

.article-img-full {
  margin-top: 48px;
}

.article-img-full .article-img-placeholder {
  aspect-ratio: 16 / 6;
  border-radius: 12px;
}

@media (max-width: 860px) {
  .article-block { padding: 70px var(--px); }
  .article-grid { grid-template-columns: 1fr; gap: 32px; }
  .article-imgs-pair { grid-template-columns: 1fr 1fr; }
}

/* ── ARTICLE PAGE ── */
.article-subtitle {
  font-family: var(--font2);
  font-size: var(--s-font);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--white);
  margin-top: 6px;
}

.article-live-link {
  display: inline-block;
  font-size: var(--s-font);
  color: var(--white);
  text-decoration: underline;
  text-underline-offset: 5px;
  text-decoration-color: rgba(255,255,255,0.4);
  margin-top: 28px;
  transition: color 0.2s, text-decoration-color 0.2s;
}
.article-live-link:hover {
  color: var(--orange);
  text-decoration-color: var(--orange);
}

.article-meta {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.meta-label {
  display: block;
  font-size: var(--xs-font);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray);
  font-weight: 700;
  margin-bottom: 6px;
}

.meta-value {
  font-size: var(--xs-font);
  color: var(--white);
  line-height: 1.6;
}

/* ── ABOUT PAGE ── */
#experience {
  padding: 110px var(--px);
  background: url('img/bg-grey.png') center/cover no-repeat;
  position: static;
}

#education {
  padding: 110px var(--px);
  background-color: #202020;
}

#certifications {
  padding: 110px var(--px);
  background-color: #202020;
}

#skills {
  padding: 110px var(--px);
  background: url('img/bg-grey.png') center/cover no-repeat;
}

/* Profile photo in biography */
.profile-photo-wrap {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

/* 
.profile-photo-wrap img {
     max-width: 100%; 
     max-height: 520px; 
     object-fit: cover; 
     display: block; 
     position: absolute;
}*/

/* Section h2 headings */
#experience h2,
#education h2,
#certifications h2,
#skills h2 {
  font-family: var(--font1);
  font-size: var(--l-font);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}

/* Experience / Education list */
.xp-list {
  margin-top: 40px;
}

.xp-entry {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
  padding: 36px 0;
  border-bottom: 1px solid var(--border);
}

.xp-entry:first-child {
  padding-top: 0;
}

.xp-left {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.xp-role {
  font-family: var(--font1);
  font-size: var(--s-font);
  font-weight: 600;
  color: var(--white);
}

.xp-company {
  font-size: var(--xs-font);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.xp-date {
  font-size: var(--xs-font);
  color: var(--gray);
}

.xp-desc {
  color: var(--gray);
  font-size: var(--xs-font);
  line-height: 1.7;
  margin-top: 8px;
}

.xp-bullets {
  list-style: none;
  padding: 0;
  margin: 0;
}

.xp-bullets li {
  font-size: var(--xs-font);
  color: var(--gray);
  padding: 4px 0 4px 20px;
  position: relative;
}

.xp-bullets li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--orange);
}


.project-image {
  width: 100%;
  max-width: 2rem;
  height: auto;
  border-radius: 12px;
  object-fit: cover;
  /*
Source - https://stackoverflow.com/a/53336754
Posted by Manish Menaria, modified by community. See post 'Timeline' for change history
Retrieved 2026-06-24, License - CC BY-SA 4.0
*/

filter: grayscale(100%) brightness(1.1) contrast(0.9);

}

.project-image img {
color: var(--orange);
}

/* Skills grid */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
  margin-top: 40px;
}

.skills-category h3 {
  font-family: var(--font1);
  font-size: var(--s-font);
  color: var(--orange);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}

.skills-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.skills-list li {
  font-size: var(--xs-font);
  color: var(--gray);
  padding: 7px 0;
  border-bottom: 1px solid var(--border);
}

/* Certifications grid */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
  margin-top: 40px;
}

.cert-entry {
  border: 1px solid var(--border);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color 0.22s;
}

.cert-entry:hover {
  border-color: var(--orange);
}

.cert-logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  margin-bottom: 4px;
}

/* ── Responsive ── */
@media (max-width: 860px) {
  :root { --guide: 1rem; --px: 6vw; }
  body::before {
    background-position:
      1rem 0,
      50% 0,
      calc(100% - 1rem) 0;
  }
  #hero, #intro, #experiments, #professional-works, #outro {
    grid-template-columns: 1fr;
    padding-top: 90px;
    padding-bottom: 70px;
    padding-left: var(--px);
    padding-right: var(--px);
  }
  #experience, #education, #certifications, #skills {
    padding-top: 70px;
    padding-bottom: 70px;
    padding-left: var(--px);
    padding-right: var(--px);
  }
  .skills-grid { grid-template-columns: 1fr; }
  .hero-right { justify-content: flex-start; }
  .diagram-wrap { margin: 0; }
  .carousel-track { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr; }
  .xp-entry { grid-template-columns: 1fr; gap: 16px; }
  #nav { width: calc(100% - 2 * var(--px)); }
  .nav-inner { gap: 0; padding: 14px 20px; flex-wrap: wrap; justify-content: space-between; }
  .nav-hamburger { display: flex; }
  .nav-links { display: none; }
  #nav.nav--open .nav-inner { border-radius: 16px; }
  #nav.nav--open .nav-links {
    display: flex;
    flex-direction: column;
    flex-basis: 100%;
    gap: 0;
    padding-top: 16px;
    margin-top: 8px;
    border-top: 1px solid var(--border);
  }
  #nav.nav--open .nav-links li { width: 100%; }
  #nav.nav--open .nav-links a {
    display: block;
    padding: 12px 0;
    font-size: var(--s-font);
    border-bottom: 1px solid var(--border);
  }
  #nav.nav--open .nav-links li:last-child a { border-bottom: none; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 36px; }
}

/*pop up */

.coming-soon-modal {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 10, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s ease;
  z-index: 9999;
}

.coming-soon-modal.is-open {
  opacity: 1;
  pointer-events: auto;
}

.coming-soon-box {
  position: relative;
  width: min(460px, 100%);
  background: #fff;
  color: #111;
  border-radius: 18px;
  padding: 1.5rem 1.4rem 1.3rem;
  box-shadow: 0 20px 60px rgba(0,0,0,.18);
  text-align: left;
}

.coming-soon-title {
  margin: 0 0 .6rem;
  font-size: 1.1rem;
  font-weight: 700;
}

.coming-soon-text {
  margin: 0;
  line-height: 1.6;
  font-size: .98rem;
  color: rgba(17,17,17,.78);
}

.coming-soon-close {
  position: absolute;
  top: .75rem;
  right: .85rem;
  border: 0;
  background: transparent;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  color: #111;
}


.clickable-row {
  cursor: pointer;
  transition: background-color .2s ease;
}

.clickable-row:hover {
  background-color: rgba(255,255,255,.05);
}