/* ===============================
   Base / Reset
   =============================== */
@font-face {
  font-family: 'iconfont';
  src: url('media/iconfont.ttf') format('truetype');
}

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

html, body {
  overflow-x: hidden;
  background-color: #000;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  color: #fff;
  margin-left: 0;
}

/* Visual constants */
:root{
  /* Cube frame */
  --frame-radius: 14px;
  --frame-border: rgba(255,255,255,0.18);
  --frame-drop-a: rgba(0,0,0,0.22);
  --frame-drop-b: rgba(0,0,0,0.12);
  --frame-inset: rgba(0,0,0,0.30);

  /* Flat interior */
  --surface-gray: #e6e6e6;

  /* Width of left nav when shown */
  --nav-peek: 12px;
}

/* ===============================
   Header
   =============================== */
.main-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 2rem;
  background-color: rgba(0,0,0,0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: none;
}

.main-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  pointer-events: none;
}

.side-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--side-nav-w);
  height: 100vh;
  padding-top: var(--header-h);
  padding-bottom: var(--header-h);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 999;
  transform: translateX(calc(-100% + var(--nav-peek)));
  transition: transform 0.3s ease;
}

.side-nav:hover,
body.side-nav-open .side-nav,
body.side-nav-hover .side-nav {
  transform: translateX(0);
}

.side-nav-toggle {
  position: absolute;
  top: 50%;
  left: 1rem;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: rgba(255,255,255,0.7);
  cursor: pointer;
  font-size: 1.5rem;
  z-index: 1001;
  display: none;
}



.side-nav .nav-links {
  display: flex;
  flex-direction: column;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  color: rgba(255,255,255,0.9);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  position: relative;
  padding: 0.5rem 0;
  transition: all 0.3s ease;
}

.nav-links a:hover { color: #fff; }

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 1px;
  background-color: #fff;
  transition: width 0.3s ease;
}

.nav-links a:hover::after { width: 100%; }

/* Bouncing arrow hint for side navigation */
.side-nav-arrow {
  position: fixed;
  top: 50%;
  left: calc(var(--nav-peek) + 10px);
  animation: bounce-x 2s infinite;
  background: rgba(0,0,0,0.2);
  backdrop-filter: blur(5px);
  padding: 15px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 998;
  transition: opacity 0.3s ease;
}

.side-nav-arrow .arrow-icon { transform: rotate(-90deg); }

.side-nav-arrow svg {
  width: 30px;
  height: 30px;
  fill: rgba(255,255,255,0.8);
}

@keyframes bounce-x {
  0%, 20%, 50%, 80%, 100% { transform: translateY(-50%) translateX(0); }
  40% { transform: translateY(-50%) translateX(10px); }
  60% { transform: translateY(-50%) translateX(5px); }
}

body.side-nav-hover .side-nav-arrow,
body.side-nav-open .side-nav-arrow {
  display: none;
}

/* Dynamic guide centered in header */
.header-guide {
  position: absolute;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  padding: 0.5rem;
}

/* Responsive tweaks for small screens */
@media (max-width: 600px) {
  :root { --side-nav-w: 100%; --nav-peek: 0; }
  .main-header {
    left: 0;
    width: 100%;
    padding: 0.8rem 1rem;
  }
  .side-nav {
    top: 0;
    width: 100%;
    height: 100vh;
    padding: var(--header-h) 1rem 1rem;
    transform: translateX(-100%);
    background: rgba(0,0,0,0.95);
  }
  body.side-nav-open .side-nav {
    transform: translateX(0);
  }
  .side-nav .nav-links {
    flex-direction: column;
    gap: 2rem;
    justify-content: center;
    align-items: center;
    height: calc(100% - var(--header-h));
  }
  .side-nav-toggle { display: block; }
  .nav-links a {
    font-size: 1.25rem;
  }
  .side-nav-arrow { display: none; }
}

.animated-message { opacity: 0; transition: opacity 0.5s ease; }
.animated-message.show { opacity: 1; }
.animated-message.fade-out-all { opacity: 0; }

/* ===============================
   Hero
   =============================== */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
}

.hero canvas {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 100%;
}

/* Scroll Arrow */
.scroll-arrow {
  position: absolute;
  bottom: 40px; left: 50%;
  transform: translateX(-50%);
  cursor: pointer;
  animation: bounce 2s infinite;
  background: rgba(0,0,0,0.2);
  backdrop-filter: blur(5px);
  padding: 15px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.3s ease;
}
.scroll-arrow:hover { background: rgba(0,0,0,0.4); }

.scroll-arrow svg {
  width: 30px; height: 30px;
  fill: rgba(255,255,255,0.8);
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translate(-50%, 0); }
  40% { transform: translate(-50%, -10px); }
  60% { transform: translate(-50%, -5px); }
}

/* ===============================
   Full-page section under hero
   =============================== */
.intro-combined {
  min-height: calc(100vh - var(--header-h));
  width: 100%;
  background: #000;
  display: flex;
  align-items: stretch;
  justify-content: center;
  padding: 0;
}

/* Full width so pages span the entire viewport */
.intro-split {
  flex: 1;
  display: flex;
  flex-direction: column;
}


/* Top: 1/3 height (cube) */
.intro-top {
  flex: 0 0 38%; /* percentage of the intro height */
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 1rem 0.5rem;
}

/* Optional inner wrapper to keep cube from growing too wide */
.intro-top-inner {
  width: 100%;
  max-width: 1100px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}

/* Cube sizing + flat framed container */
.cube-wrap {
  width: clamp(180px, 28vmin, 340px); /* was 140/24vmin/280 */
  height: auto;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--frame-border);
  border-radius: 10px;
  box-shadow:
    0 8px 16px var(--frame-drop-a),
    0 2px 6px var(--frame-drop-b),
    inset 0 0 6px var(--frame-inset);
  margin-top: 0.5rem;
}

#intro-cube {
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
  user-select: none;
  background: transparent;
  position: relative;
  z-index: 1;
}

/* Nudge the cube (and its frame) down slightly */
.intro-top {
  padding-top: 4rem; /* give more breathing room */
}
.cube-wrap {
  margin-top: 1rem; /* move cube and border down together */
}

/* Bottom: 2/3 height, full-width horizontal pager */
.intro-bottom {
  flex: 1 1 auto;
  height: auto;
  padding-top: 0.5rem; /* reduced gap between cube and section titles */
  background: #000;
  overscroll-behavior: contain;
}

/* Horizontal scroller spans full viewport width */
.pages-scroll {
  height: 100%;
  width: 100vw;
  display: flex;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  scrollbar-color: #343434 #0b0b0b;
  scrollbar-width: thin;
}

/* Each page fills the viewport width and is top-centered */
.page {
  flex: 0 0 100vw;
  height: 100%;
  width: 100%;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 1.5rem 1.5rem;
}
.page-inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.75rem; /* reduced from 1.25rem */
  align-items: center;
  width: min(100%, 1100px);
}

.page-education .page-inner h2,
.page-skills .page-inner h2,
.page-projects .page-inner h2,
.page-experience .page-inner h2,
.page-contact .page-inner h2 {
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: clamp(2.2rem, 5.5vw, 3.5rem);
  line-height: 1.05;
}

/* Title + Resume button */
.intro-title {
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: clamp(2.2rem, 5.5vw, 3.5rem);
  line-height: 1.05;
  color: #fff;
  margin: 0.5rem 0 0 0;
}

#download-resume-btn {
  display: inline-block;
  background: transparent;
  color: #fff;
  text-decoration: none;
  padding: 0.9rem 2rem;
  font-size: 1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: 999px;
  position: relative;
  outline: none;
}
#download-resume-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 2px solid #fff;
  border-radius: 999px;
  pointer-events: none;
}
#download-resume-btn:active { transform: translateY(1px); }

/* ===============================
   Border wrapper + animated lines
   =============================== */
.border-wrapper {
  position: relative;
  width: 100%;
  margin: 0 auto;
  box-sizing: border-box;
}

.border-top,
.border-right,
.border-bottom,
.border-left {
  position: absolute;
  background-color: #fff;
  z-index: 9999;
}

/* Top border */
.border-top {
  top: 0; left: 0;
  width: 0%; height: 2px;
  animation: drawTop 1s forwards ease-out;
}
@keyframes drawTop { 0% { width: 0% } 100% { width: 100% } }

/* Right border */
.border-right {
  top: 0; right: 0;
  width: 2px; height: 0%;
  animation: drawRight 1s forwards ease-out;
  animation-delay: 1s;
}
@keyframes drawRight { 0% { height: 0% } 100% { height: 100% } }

/* Bottom border (optional; only if you add it in HTML) */
.border-bottom {
  bottom: 0; left: 0;
  width: 0%; height: 2px;
  animation: drawBottom 1s forwards ease-out;
  animation-delay: 2s;
}
@keyframes drawBottom { 0% { width: 0% } 100% { width: 100% } }

/* Left border */
.border-left {
  top: 0; left: 0;
  width: 2px; height: 0%;
  animation: drawLeft 1s forwards ease-out;
  animation-delay: 3s;
}
@keyframes drawLeft { 0% { height: 0% } 100% { height: 100% } }

/* ===============================
   Scrollbar theming (WebKit/Blink)
   =============================== */
.pages-scroll::-webkit-scrollbar { height: 10px; }
.pages-scroll::-webkit-scrollbar-track { background: #0b0b0b; border-radius: 8px; }
.pages-scroll::-webkit-scrollbar-thumb { background: #343434; border-radius: 8px; }
.pages-scroll::-webkit-scrollbar-thumb:hover { background: #4a4a4a; }

/* Page vertical scrollbar to match */
html::-webkit-scrollbar { width: 10px; }
html::-webkit-scrollbar-track { background: #0b0b0b; }
html::-webkit-scrollbar-thumb { background: #343434; border-radius: 8px; }
html::-webkit-scrollbar-thumb:hover { background: #4a4a4a; }

/* Firefox vertical scrollbar on page */
html { scrollbar-color: #343434 #0b0b0b; scrollbar-width: thin; }

/* Keep promo (hidden unless you need it) */
.promo { display: none; }

/* --- Example blurb under heading --- */
.page-blurb {
  font-size: 0.95rem;
  line-height: 1.5;
  max-width: 28ch;
  color: #bdbdbd;
  margin-top: 0.25rem; /* tightened */
}

/* --- Up arrow button --- */
.page-up-arrow{
  margin-top: 0.5rem;                 /* push to bottom of .page-inner */
  font-size: 2.2rem;
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
  transition: transform 0.25s;
  animation: upArrowIdle 1.8s ease-in-out infinite;
  transform: translateY(0);            /* baseline so the keyframes are consistent */
  will-change: transform;
}
/* Pause the bob and give a tiny lift on hover/focus */
.page-up-arrow:hover,
.page-up-arrow:focus-visible {
  animation-play-state: paused;
  transform: translateY(-10px) scale(1.15); /* subtle grow on hover */
  outline: none;
}

/* Reduce/disable for users who prefer less motion */
@media (prefers-reduced-motion: reduce) {
  .page-up-arrow { animation: none; }
}

/* Keyframes for the subtle up/down motion */
@keyframes upArrowIdle {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}


/* --- Sliding detail sheet --- */
.detail-sheet{
  position: fixed;
  inset: 0;
  background: #111;
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;

  transform: translateY(100vh);
  transition: transform 0.5s ease;
  z-index: 1200;
}

/* close button inside sheet */
.sheet-close{
  position: absolute;
  top: 12px; right: 12px;
  font-size: 2rem;
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
}
.detail-sheet .sheet-close {
  position: absolute;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 2rem;
  background: none;
  border: none;
  color: white;
  cursor: pointer;
  z-index: 1000;
}


/* when sheet is active */
.detail-sheet.open{ transform: translateY(0); }

.detail-sheet {
  overflow: hidden;         /* keep the sheet itself fixed */
}
.detail-sheet .sheet-content {
  max-width: 900px;
  width: min(90vw, 900px);
  max-height: calc(100vh - 80px);
  overflow: auto;           /* content scrolls inside */
  padding: 2rem 1.25rem;
  line-height: 1.6;
}
.detail-sheet .sheet-content h3 {
  margin: 0 0 1rem;
}
.detail-sheet .sheet-content p,
.detail-sheet .sheet-content li {
  color: #d6d6d6;
}
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem 1.25rem;
}
.skills-grid h4 { margin: 0 0 .35rem 0; font-weight: 700; }
.skills-grid ul { margin: 0; padding-left: 1.1rem; line-height: 1.5; }

/* --- Shared sheet helpers --- */
.sheet-content a {
  color: #cdd7ff;
  text-decoration: none;
  border-bottom: 1px dashed rgba(205,215,255,0.45);
}
.sheet-content a:hover { border-bottom-style: solid; }

.sheet-content .eyebrow {
  display: inline-block;
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: #a7a7a7;
  margin-bottom: .35rem;
}

.sheet-content .muted { color: #a8a8a8; }

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem .5rem;
  margin-top: .5rem;
}
.tag {
  font-size: .72rem;
  line-height: 1;
  padding: .35rem .6rem;
  border-radius: 999px;
  background: #171717;
  border: 1px solid rgba(255,255,255,0.08);
  color: #bdbdbd;
}

/* subtle cards */
.card {
  background: #0d0d0d;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  box-shadow: 0 8px 18px rgba(0,0,0,0.28);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0,0,0,0.35);
}

.xp-list {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}
.xp-item {
  padding: 1rem 1.25rem;
}
.xp-item h4 {
  font-size: 1.05rem;
  line-height: 1.25;
  margin: 0 0 .35rem 0;
}
.xp-item h4 em {
  font-style: normal;
  color: #cfcfcf;
  font-weight: 600;
}
.xp-item small {
  color: #a2a2a2;
}
.xp-item ul {
  margin: .6rem 0 0 0;
  padding-left: 1.15rem;
}
.xp-item li {
  color: #d6d6d6;
  margin: .25rem 0;
}

/* Optional compact meta row inside header */
.xp-meta {
  display: flex;
  gap: .6rem;
  flex-wrap: wrap;
  font-size: .85rem;
  color: #9c9c9c;
}


.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}
.edu-card {
  padding: 1rem 1.25rem;
}
.edu-card h4 {
  margin: 0 0 .25rem 0;
  font-size: 1.05rem;
}
.edu-card .school {
  color: #cfcfcf;
  margin-bottom: .35rem;
}
.edu-card .row {
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
  font-size: .9rem;
  color: #a9a9a9;
}
.edu-card ul {
  margin: .6rem 0 0 0;
  padding-left: 1.15rem;
}
.edu-card li { color: #d6d6d6; }

.skill-card,
.contact-card {
  padding: 1rem 1.25rem;
}

.project-list {
  list-style: none;
  padding-left: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}
.project-list li {
  padding: 1rem 1.25rem;
}
.project-list strong {
  display: block;
  margin-bottom: .25rem;
  color: #fff;
}
.project-list p,
.project-list li { color: #d6d6d6; }
.project-list a {
  display: inline-block;
  margin-top: .35rem;
}

/* Optional compact “pill” link style for project actions */
.project-actions {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  margin-top: .5rem;
}
.project-actions a {
  border: 1px solid rgba(205,215,255,0.35);
  border-radius: 999px;
  padding: .35rem .7rem;
  line-height: 1;
  font-size: .85rem;
  color: #cdd7ff;
  border-bottom: none; /* remove dashed underline from shared link style */
}
.project-actions a:hover {
  background: rgba(205,215,255,0.08);
}


@media (max-width: 640px) {
  .detail-sheet .sheet-content {
    padding: 1.25rem 1rem;
  }
  .xp-item, .edu-card, .project-list li { padding: .9rem 1rem; }
}
/* Animated underline for page titles (not Home) */
.page:not(.page-home) h2 {
  position: relative;
  display: inline-block;
  padding-bottom: .25rem;
}

.page:not(.page-home) h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  height: 2px;
  width: 0;
  background: #fff;
  opacity: 0;
  transition: width 420ms ease, opacity 520ms ease;
}
/* Vertical snap between Hero and the Intro section */
html, body{
  height:100%;
  scroll-snap-type: y mandatory;  /* ensure sections always snap */
  scroll-behavior: smooth;         /* base smoothness */
}

:root { --header-h: 70px; --side-nav-w: 180px; } /* adjust if your header is taller/shorter */

html { 
  scroll-padding-top: var(--header-h); /* anchors/snap land below header */
}

/* Make each major section a snap point */
.hero,
.border-wrapper {
  padding-top: var(--header-h);
  scroll-snap-align: start;
  scroll-snap-stop: always;
}

/* Active page shows the line */
.page.active:not(.page-home) h2::after{
  transform:scaleX(1);
  opacity:1;
}

/* Directional underline for section titles */
.page:not(.page-home) h2{
  position: relative;
  display: inline-block;
  padding-bottom: .25rem;
}

.page:not(.page-home) h2::after{
  content:"";
  position:absolute;
  left:0; bottom:-6px;
  height:2px;
  width:100%;
  background:#fff;

  /* start hidden */
  transform:scaleX(0);
  opacity:0;

  /* smooth fade + wipe */
  transform-origin:left;
  transition:
    transform 420ms ease,
    opacity 520ms ease;
  will-change: transform, opacity;
}

/* Force a known starting state just before we activate (JS adds this briefly) */
.page.pre-activate:not(.page-home) h2::after{
  transform: scaleX(0);
  opacity: 0;
}

/* Active page shows the line (this is the fade IN) */
.page.active:not(.page-home) h2::after{
  transform:scaleX(1);
  opacity:1;
}

/* Set wipe direction based on scroll direction */
.pages-scroll.dir-right .page:not(.page-home) h2::after{ transform-origin:left;  }
.pages-scroll.dir-left  .page:not(.page-home) h2::after{ transform-origin:right; }

/* Fade OUT direction matches scroll direction */
.page.leaving-right h2::after { transform-origin: right; }
.page.leaving-left  h2::after { transform-origin: left;  }