/* ================================================
   Reimar Hoven — Personal Homepage
   Custom Design System
================================================ */

:root {
  --bg-deep:    #070d1a;
  --bg-surface: #0d1a2e;
  --bg-card:    #0f1e34;
  --cyan:   #00d4ff;
  --coral:  #ff6b6b;
  --gold:   #ffd166;
  --purple: #b39ddb;
  --green:  #34d399;
  --text:   #ddeaf4;
  --muted:  #7a9ab0;
  --faint:  #3a5570;
  --border: rgba(0,212,255,.14);
  --font-h: 'Space Grotesk', sans-serif;
  --font-b: 'DM Sans', sans-serif;
  --font-m: 'JetBrains Mono', monospace;
  --r: 18px;
  --ease: cubic-bezier(.4,0,.2,1);
}

/* ── Reset ─────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px;overflow:hidden;height:100%}
body{
  font-family:var(--font-b);
  background:var(--bg-deep);
  color:var(--text);
  line-height:1.65;
  overflow:hidden;
  height:100%;
}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}
button{cursor:pointer;border:none;background:none;font:inherit}

/* ── Canvas ────────────────────────────────── */
#rh-canvas{
  position:fixed;top:0;left:0;
  width:100%;height:100%;
  z-index:0;pointer-events:none;
}

/* ── Container ─────────────────────────────── */
.rh-container{
  max-width:1080px;
  margin:0 auto;
  padding:0 2rem;
}

/* ── NAV ───────────────────────────────────── */
.rh-nav{
  position:fixed;top:0;left:0;right:0;z-index:200;
  display:flex;align-items:center;justify-content:space-between;
  padding:1.1rem 2.5rem;
  background:rgba(7,13,26,.82);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
.nav-logo{
  display:flex;align-items:center;
  text-decoration:none;
  transition:filter .35s var(--ease),transform .25s var(--ease);
}
.nav-logo:hover{
  filter:drop-shadow(0 0 10px rgba(0,212,255,.55));
  transform:scale(1.06);
}
.nav-links{
  list-style:none;display:flex;gap:2.4rem;
}
.nav-links a{
  font-size:.85rem;font-weight:500;letter-spacing:.06em;
  text-transform:uppercase;color:var(--muted);
  position:relative;transition:color .25s var(--ease);
}
.nav-links a::after{
  content:'';position:absolute;bottom:-3px;left:0;
  width:0;height:1px;background:var(--cyan);
  transition:width .3s var(--ease);
}
.nav-links a:hover{color:var(--cyan)}
.nav-links a:hover::after{width:100%}

/* single contact link in nav */
.nav-mail-link{
  font-size:.82rem;font-weight:500;letter-spacing:.07em;
  text-transform:uppercase;color:var(--muted);
  text-decoration:none;
  position:relative;
  transition:color .25s var(--ease);
}
.nav-mail-link::after{
  content:'';position:absolute;bottom:-3px;left:0;
  width:0;height:1px;background:var(--cyan);
  transition:width .3s var(--ease);
}
.nav-mail-link:hover{color:var(--cyan)}
.nav-mail-link:hover::after{width:100%}

/* hamburger */
.nav-burger{
  display:none;flex-direction:column;gap:5px;padding:4px;
}
.nav-burger span{
  display:block;width:22px;height:2px;
  background:var(--text);border-radius:2px;
  transition:transform .3s var(--ease),opacity .3s;
}
.nav-burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-burger.open span:nth-child(2){opacity:0}
.nav-burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* mobile drawer */
.nav-drawer{
  display:none;
  position:fixed;inset:0;z-index:190;
  background:var(--bg-deep);
  flex-direction:column;align-items:center;justify-content:center;gap:3rem;
}
.nav-drawer.open{display:flex}
.nav-drawer a{
  font-family:var(--font-h);font-size:2rem;font-weight:700;
  color:var(--text);transition:color .2s;
}
.nav-drawer a:hover{color:var(--cyan)}

/* ── HERO ──────────────────────────────────── */
.rh-hero{
  position:relative;z-index:1;
  height:100svh;
  display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  text-align:center;
  padding:5rem 2rem 3rem;
  overflow:hidden;
}
.hero-copy{
  position:absolute;bottom:1.6rem;left:50%;
  transform:translateX(-50%);
  white-space:nowrap;
  font-family:var(--font-m);font-size:.72rem;
  color:var(--faint);letter-spacing:.08em;
  opacity:0;animation:rh-fade 1s 1.4s var(--ease) forwards;
}
.hero-kicker{
  font-family:var(--font-m);font-size:.85rem;
  color:var(--cyan);letter-spacing:.22em;text-transform:uppercase;
  margin-bottom:1.4rem;
  opacity:0;animation:rh-up .7s .2s var(--ease) forwards;
}
.hero-name{
  font-family:var(--font-h);
  font-size:clamp(3.2rem,9vw,7.5rem);
  font-weight:700;line-height:1.02;
  margin-bottom:1.4rem;
  opacity:0;animation:rh-up .7s .4s var(--ease) forwards;
}
.hero-name .n1{
  display:block;color:var(--text);
}
.hero-name .n2{
  display:block;
  background:linear-gradient(130deg,var(--cyan) 0%,var(--purple) 60%,var(--coral) 100%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero-type-line{
  font-family:var(--font-m);
  font-size:clamp(1rem,2.4vw,1.35rem);
  color:var(--muted);min-height:2.2em;
  margin-bottom:3rem;
  opacity:0;animation:rh-up .7s .6s var(--ease) forwards;
}
#typed-word{color:var(--text)}
.type-cursor{
  color:var(--cyan);
  animation:rh-blink 1s step-end infinite;
}
/* bio / contact text inside hero */
.hero-bio{
  max-width:460px;
  color:var(--muted);font-size:1rem;line-height:1.75;
  margin:.6rem auto 2.2rem;
  opacity:0;animation:rh-up .7s .7s var(--ease) forwards;
}

.hero-cta{
  display:flex;gap:.9rem;flex-wrap:wrap;justify-content:center;
  opacity:0;animation:rh-up .7s .95s var(--ease) forwards;
}

/* scroll hint */
.hero-scroll{
  position:absolute;bottom:2.2rem;left:50%;transform:translateX(-50%);
  opacity:0;animation:rh-fade 1s 1.6s var(--ease) forwards;
}
.scroll-pill{
  width:22px;height:38px;
  border:2px solid var(--faint);border-radius:11px;
  display:flex;align-items:flex-start;justify-content:center;padding:4px;
}
.scroll-pill span{
  width:3px;height:8px;background:var(--cyan);border-radius:2px;
  animation:rh-scroll 2s ease infinite;
}

/* ── BUTTONS ───────────────────────────────── */
.btn-c{
  display:inline-flex;align-items:center;gap:.55rem;
  padding:.8rem 1.9rem;border-radius:50px;font-family:var(--font-h);
  font-weight:600;font-size:.95rem;letter-spacing:.02em;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s;
}
.btn-c:hover{transform:translateY(-2px)}
.btn-filled{background:var(--cyan);color:var(--bg-deep)}
.btn-filled:hover{background:#33dcff;box-shadow:0 8px 22px rgba(0,212,255,.32)}
.btn-ghost{
  border:1px solid var(--faint);color:var(--text);
}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn-xl{padding:1.1rem 2.8rem;font-size:1.05rem}

/* ── ABOUT ─────────────────────────────────── */
.rh-about{
  position:relative;z-index:1;
  padding:8rem 0;
}
.about-grid{
  display:grid;
  grid-template-columns:240px 1fr;
  gap:5rem;align-items:center;
}
.profile-wrap{position:relative;display:inline-block}
.profile-wrap img,
.profile-wrap .rh-avatar{
  width:220px;height:220px;
  border-radius:20px;
  display:block;
}
/* raster photo: subtle desaturate on idle */
.profile-wrap img:not(.rh-avatar){
  object-fit:cover;
  filter:grayscale(20%);
  transition:filter .4s;
}
.profile-wrap:hover img:not(.rh-avatar){filter:grayscale(0%)}
/* SVG avatar: glow on hover */
.profile-wrap .rh-avatar{
  transition:filter .35s var(--ease);
}
.profile-wrap:hover .rh-avatar{
  filter:drop-shadow(0 0 14px rgba(0,212,255,.4));
}
.profile-deco{
  position:absolute;inset:-10px;
  border:2px solid var(--cyan);border-radius:24px;
  opacity:.35;transform:rotate(4deg);
  transition:transform .35s var(--ease),opacity .35s;
  z-index:-1;
}
.profile-wrap:hover .profile-deco{transform:rotate(0deg);opacity:.65}

.section-label{
  font-family:var(--font-m);font-size:.75rem;
  color:var(--cyan);letter-spacing:.2em;text-transform:uppercase;
  margin-bottom:1rem;
}
.section-title{
  font-family:var(--font-h);
  font-size:clamp(1.7rem,3.5vw,2.6rem);
  font-weight:700;line-height:1.15;
  margin-bottom:1.4rem;color:var(--text);
}
.about-bio{
  font-size:1.05rem;color:var(--muted);line-height:1.8;
  margin-bottom:2rem;
}
.chip-row{display:flex;flex-wrap:wrap;gap:.55rem}
.chip{
  font-family:var(--font-m);font-size:.75rem;
  padding:.3rem .85rem;border-radius:50px;
  background:rgba(0,212,255,.08);
  border:1px solid rgba(0,212,255,.25);
  color:var(--cyan);letter-spacing:.04em;
  position:relative;
}

/* ── Chip tooltips ─────────────────────────── */
.chip[data-tip]{cursor:help}

.chip[data-tip]::before{
  content:attr(data-tip);
  position:absolute;
  bottom:calc(100% + 12px);
  left:50%;
  transform:translateX(-50%) translateY(5px);
  width:max-content;max-width:220px;
  padding:.55rem .85rem;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:10px;
  box-shadow:0 8px 24px rgba(0,0,0,.5);
  font-family:var(--font-b);font-size:.78rem;
  font-weight:400;letter-spacing:0;
  color:var(--text);white-space:normal;
  line-height:1.5;text-align:left;
  pointer-events:none;z-index:50;
  opacity:0;
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}

/* arrow */
.chip[data-tip]::after{
  content:'';
  position:absolute;
  bottom:calc(100% + 7px);
  left:50%;
  transform:translateX(-50%) translateY(5px) rotate(45deg);
  width:8px;height:8px;
  background:var(--bg-card);
  border-right:1px solid var(--border);
  border-bottom:1px solid var(--border);
  pointer-events:none;z-index:49;
  opacity:0;
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}

.chip[data-tip]:hover::before{
  opacity:1;transform:translateX(-50%) translateY(0);
}
.chip[data-tip]:hover::after{
  opacity:1;transform:translateX(-50%) translateY(0) rotate(45deg);
}

/* on small screens: pin tooltip to left edge of chip */
@media(max-width:480px){
  .chip[data-tip]::before{left:0;transform:translateY(5px)}
  .chip[data-tip]::after {left:12px;transform:translateY(5px) rotate(45deg)}
  .chip[data-tip]:hover::before{transform:translateY(0)}
  .chip[data-tip]:hover::after {transform:translateY(0) rotate(45deg)}
}

/* ── INTERESTS ─────────────────────────────── */
.rh-interests{
  position:relative;z-index:1;
  padding:8rem 0;
  background:linear-gradient(180deg,rgba(13,26,46,.6) 0%,rgba(13,26,46,.0) 100%);
}
.section-header{text-align:center;margin-bottom:4.5rem}
.section-sub{
  font-size:1rem;color:var(--muted);margin-top:.6rem;
}

/* 6-col grid trick for centering 4th+5th cards */
.interests-grid{
  display:grid;
  grid-template-columns:repeat(6,1fr);
  gap:1.4rem;
}
.icard{grid-column:span 2}
/* last row: 2 cards centered (shift them inward by 1 col each) */
.icard:nth-child(4){grid-column:2/span 2}
.icard:nth-child(5){grid-column:4/span 2}

.icard{
  position:relative;overflow:hidden;
  background:var(--bg-card);
  border:1px solid var(--border);border-radius:var(--r);
  padding:2.4rem 2rem;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s;
  opacity:0;transform:translateY(28px);
}
.icard.visible{
  opacity:1;transform:translateY(0);
  transition:opacity .55s var(--ease),transform .55s var(--ease),
             box-shadow .3s var(--ease),border-color .3s;
}
.icard:hover{
  transform:translateY(-8px);
  box-shadow:0 20px 48px rgba(0,0,0,.45);
  border-color:rgba(0,212,255,.32);
}

.icard-icon{width:72px;height:72px;margin-bottom:1.4rem}
.icard-icon svg{width:100%;height:100%}

.icard-title{
  font-family:var(--font-h);font-size:1.2rem;font-weight:600;
  color:var(--text);margin-bottom:.9rem;
}
.icard-line{font-size:.9rem;color:var(--muted);line-height:1.55;margin-bottom:.3rem}

/* per-card glow accent */
.icard-glow{
  position:absolute;top:-60px;right:-60px;
  width:180px;height:180px;border-radius:50%;
  pointer-events:none;opacity:0;
  transition:opacity .4s;
}
.icard:hover .icard-glow{opacity:1}
.icard:nth-child(1) .icard-glow{background:radial-gradient(circle,rgba(0,212,255,.1),transparent 70%)}
.icard:nth-child(2) .icard-glow{background:radial-gradient(circle,rgba(255,107,107,.1),transparent 70%)}
.icard:nth-child(3) .icard-glow{background:radial-gradient(circle,rgba(255,209,102,.1),transparent 70%)}
.icard:nth-child(4) .icard-glow{background:radial-gradient(circle,rgba(179,157,219,.1),transparent 70%)}
.icard:nth-child(5) .icard-glow{background:radial-gradient(circle,rgba(52,211,153,.1),transparent 70%)}

/* accent stripe at bottom of card */
.icard::after{
  content:'';position:absolute;bottom:0;left:0;right:0;height:2px;
  opacity:0;transition:opacity .3s;
  border-radius:0 0 var(--r) var(--r);
}
.icard:hover::after{opacity:1}
.icard:nth-child(1)::after{background:linear-gradient(90deg,var(--cyan),transparent)}
.icard:nth-child(2)::after{background:linear-gradient(90deg,var(--coral),transparent)}
.icard:nth-child(3)::after{background:linear-gradient(90deg,var(--gold),transparent)}
.icard:nth-child(4)::after{background:linear-gradient(90deg,var(--purple),transparent)}
.icard:nth-child(5)::after{background:linear-gradient(90deg,var(--green),transparent)}

/* ── CONTACT ───────────────────────────────── */
.rh-contact{
  position:relative;z-index:1;
  padding:9rem 0;text-align:center;
}
.contact-inner{max-width:580px;margin:0 auto}
.contact-text{font-size:1.05rem;color:var(--muted);line-height:1.75;margin-bottom:2.8rem}
.contact-mail-icon{width:20px;height:20px}

/* ── FOOTER ────────────────────────────────── */
.rh-footer{
  position:relative;z-index:1;
  padding:2rem;text-align:center;
  border-top:1px solid var(--border);
}
.footer-copy{
  font-family:var(--font-m);font-size:.75rem;
  color:var(--faint);letter-spacing:.1em;
}

/* ── KEYFRAMES ─────────────────────────────── */
@keyframes rh-up{
  from{opacity:0;transform:translateY(24px)}
  to{opacity:1;transform:translateY(0)}
}
@keyframes rh-fade{
  from{opacity:0} to{opacity:1}
}
@keyframes rh-blink{
  0%,100%{opacity:1} 50%{opacity:0}
}
@keyframes rh-scroll{
  0%{transform:translateY(0);opacity:1}
  80%{transform:translateY(14px);opacity:0}
  100%{transform:translateY(0);opacity:0}
}

/* ── RESPONSIVE ────────────────────────────── */
@media(max-width:992px){
  .about-grid{
    grid-template-columns:1fr;
    gap:3rem;text-align:center;
  }
  .profile-wrap{display:flex;justify-content:center}
  .chip-row{justify-content:center}
  /* back to 2-col grid */
  .interests-grid{
    grid-template-columns:repeat(2,1fr);
    gap:1.2rem;
  }
  .icard{grid-column:span 1}
  .icard:nth-child(4){grid-column:span 1}
  .icard:nth-child(5){grid-column:1/-1;max-width:420px;justify-self:center}
}
@media(max-width:640px){
  .rh-nav{padding:1rem 1.4rem}
  .nav-links{display:none}
  .nav-burger{display:flex;z-index:201}
  .interests-grid{grid-template-columns:1fr}
  .icard:nth-child(5){max-width:100%;justify-self:stretch}
  .hero-cta{flex-direction:column;align-items:center}
  .section-title{font-size:1.8rem}
}
@media(max-width:400px){
  .rh-container{padding:0 1.1rem}
}