/* ===========================================================
   Karan Gandhi — Portfolio
   Sepia / warm-paper palette, structured as a real multi-page site
   =========================================================== */

:root{
  --paper:      #ede1c6;
  --paper-deep: #e3d3ab;
  --surface:    #f5ecd6;
  --surface-2:  #f9f2e0;
  --ink:        #241b10;
  --ink-soft:   #5c4e37;
  --ink-faint:  #8a7a5c;
  --rule:       #c9b488;
  --rule-soft:  #ddcda2;
  --accent:     #8a3324;
  --accent-soft:#b3563e;
  --accent-ink: #fff8ea;
  --moss:       #4f5c37;
  --moss-soft:  #7c8a5a;
  --shadow:     0 1px 2px rgba(36,27,16,0.06), 0 8px 24px -12px rgba(36,27,16,0.22);
  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  16px;
  --max: 1120px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

body{
  margin:0;
  background:
    radial-gradient(ellipse at top left, rgba(255,250,232,0.4), transparent 55%),
    var(--paper);
  color: var(--ink);
  font-family: 'Newsreader', serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body::before{
  content:"";
  position: fixed; inset:0;
  pointer-events:none;
  z-index: 0;
  opacity: 0.35;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='matrix' values='0 0 0 0 0.16  0 0 0 0 0.13  0 0 0 0 0.08  0 0 0 0.05 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

::selection{ background: var(--accent); color: var(--accent-ink); }

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

h1,h2,h3,h4{
  font-family: 'Fraunces', serif;
  color: var(--ink);
  margin: 0;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.mono{ font-family:'IBM Plex Mono', monospace; }

.eyebrow{
  font-family:'IBM Plex Mono', monospace;
  font-size: 12.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  display:flex; align-items:center; gap:8px;
  margin-bottom: 10px;
}
.eyebrow::before{ content:""; width:16px; height:1px; background: var(--accent); }

.wrap{ max-width: var(--max); margin: 0 auto; padding: 0 28px; position: relative; z-index: 1; }

/* ---------------- buttons ---------------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap: 8px;
  font-family:'IBM Plex Mono', monospace; font-size: 13px; letter-spacing: 0.04em;
  text-transform: uppercase; padding: 12px 22px; border-radius: var(--radius-sm);
  border: 1px solid transparent; cursor:pointer; transition: transform .15s ease, background .15s ease, border-color .15s ease, color .15s ease;
}
.btn:hover{ transform: translateY(-1px); }
.btn-primary{ background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn-primary:hover{ background: var(--accent-soft); border-color: var(--accent-soft); }
.btn-outline{ background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-outline:hover{ border-color: var(--accent); color: var(--accent); }
.btn:disabled{ opacity: .55; cursor: not-allowed; transform:none; }

/* ---------------- navbar ---------------- */
.navbar{
  position: sticky; top: 0; z-index: 50;
  background: rgba(237,225,198,0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
.nav-inner{
  max-width: var(--max); margin: 0 auto; padding: 16px 28px;
  display:flex; align-items:center; justify-content:space-between; gap: 20px;
}
.logo{ font-family:'Fraunces', serif; font-weight: 700; font-size: 19px; color: var(--ink); display:flex; align-items:center; gap:10px; }
.logo .mark{
  width: 30px; height: 30px; border-radius: 50%; border: 1.5px solid var(--accent);
  display:flex; align-items:center; justify-content:center;
  font-family:'IBM Plex Mono', monospace; font-size: 12px; color: var(--accent);
}
.nav-links{ display:flex; align-items:center; gap: 28px; }
.nav-links a{
  font-family:'IBM Plex Mono', monospace; font-size: 12.5px; letter-spacing: 0.07em;
  text-transform: uppercase; color: var(--ink-soft); padding: 6px 0; position: relative;
}
.nav-links a::after{
  content:""; position:absolute; left:0; right:0; bottom:-3px; height:2px; background: var(--accent);
  transform: scaleX(0); transform-origin: left; transition: transform .2s ease;
}
.nav-links a:hover{ color: var(--ink); }
.nav-links a:hover::after{ transform: scaleX(1); }
.nav-links a[aria-current="page"]{ color: var(--accent); }
.nav-links a[aria-current="page"]::after{ transform: scaleX(1); }
.nav-cta{ display:flex; align-items:center; gap: 14px; }

.nav-toggle{
  display:none; background:none; border: 1px solid var(--rule); border-radius: var(--radius-sm);
  width: 40px; height: 40px; align-items:center; justify-content:center; cursor:pointer;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{
  content:""; display:block; width: 18px; height: 2px; background: var(--ink); position: relative;
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle span::before{ position:absolute; top:-6px; }
.nav-toggle span::after{ position:absolute; top:6px; }

/* ---------------- hero ---------------- */
.hero{ padding: 72px 0 64px; }
.hero-grid{ display:grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items:center; }
.hero h1{ font-size: clamp(38px, 5.2vw, 58px); line-height: 1.04; margin: 6px 0 18px; }
.hero h1 .accent{ color: var(--accent); font-style: italic; font-weight: 500; }
.hero p.lede{ color: var(--ink-soft); font-size: 18.5px; max-width: 52ch; margin-bottom: 30px; }
.hero-actions{ display:flex; gap: 14px; flex-wrap: wrap; }

.hero-card{
  background: var(--surface); border: 1px solid var(--rule);
  border-radius: var(--radius-lg); padding: 28px; box-shadow: var(--shadow);
}
.hero-card .status{
  display:inline-flex; align-items:center; gap:8px; font-family:'IBM Plex Mono', monospace;
  font-size: 12px; text-transform: uppercase; letter-spacing:0.06em; color: var(--moss);
  background: rgba(124,138,90,0.12); border: 1px solid var(--moss-soft);
  padding: 6px 12px; border-radius: 999px; margin-bottom: 20px;
}
.hero-card .status::before{ content:"●"; font-size: 9px; }
.hero-stat-row{ display:flex; justify-content:space-between; padding: 12px 0; border-top: 1px solid var(--rule-soft); }
.hero-stat-row:first-of-type{ border-top:none; }
.hero-stat-row .k{ font-family:'IBM Plex Mono', monospace; font-size: 12px; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.05em; }
.hero-stat-row .v{ font-family:'Fraunces', serif; font-weight: 600; font-size: 16px; color: var(--ink); text-align:right; }

/* ---------------- stats strip ---------------- */
.stats-strip{ border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); padding: 28px 0; }
.stats-row{ display:grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat{ text-align:center; }
.stat .num{ font-family:'Fraunces', serif; font-weight: 700; font-size: 30px; color: var(--accent); }
.stat .cap{ font-family:'IBM Plex Mono', monospace; font-size: 11.5px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-faint); margin-top: 4px; }

/* ---------------- sections ---------------- */
.section{ padding: 72px 0; }
.section-border{ border-bottom: 1px solid var(--rule-soft); }
.section-header{ display:flex; align-items:flex-end; justify-content:space-between; gap: 20px; margin-bottom: 40px; flex-wrap: wrap; }
.section-header .section-title{ font-size: clamp(26px, 3.4vw, 34px); }
.section-header .section-desc{ color: var(--ink-soft); max-width: 46ch; font-size: 15.5px; }
.section-link{ font-family:'IBM Plex Mono', monospace; font-size: 12.5px; text-transform: uppercase; letter-spacing: 0.06em; border-bottom: 1px solid var(--ink); padding-bottom: 3px; white-space:nowrap; }
.section-link:hover{ color: var(--accent); border-color: var(--accent); }

/* ---------------- page header (non-home pages) ---------------- */
.page-header{ padding: 56px 0 40px; border-bottom: 1px solid var(--rule-soft); }
.page-header h1{ font-size: clamp(34px, 5vw, 48px); margin: 6px 0 14px; }
.page-header p{ color: var(--ink-soft); font-size: 17px; max-width: 56ch; }

/* ---------------- cards / grids ---------------- */
.card-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card{
  background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius-md);
  padding: 24px; box-shadow: var(--shadow); transition: transform .18s ease, box-shadow .18s ease;
  display:flex; flex-direction:column;
}
.card:hover{ transform: translateY(-3px); }
.card .card-date{ font-family:'IBM Plex Mono', monospace; font-size: 11.5px; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 10px; }
.card h3{ font-size: 19px; margin-bottom: 10px; }
.card p{ color: var(--ink-soft); font-size: 15px; margin: 0 0 16px; flex:1; }
.tag-list{ display:flex; flex-wrap:wrap; gap: 8px; }
.tag{
  font-family:'IBM Plex Mono', monospace; font-size: 11.5px; padding: 5px 10px;
  border: 1px solid var(--rule); border-radius: 999px; color: var(--ink-soft); background: var(--surface-2);
}

/* ---------------- skills ---------------- */
.skills-grid{ display:grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.skill-card{ background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius-md); padding: 20px; }
.skill-card h3{ font-size: 13.5px; text-transform: uppercase; letter-spacing: 0.07em; font-family:'IBM Plex Mono', monospace; color: var(--ink-faint); margin-bottom: 14px; font-weight: 500; }

/* ---------------- education ---------------- */
.edu-list{ display:flex; flex-direction:column; gap: 0; }
.edu-item{ display:grid; grid-template-columns: 140px 1fr auto; gap: 18px; align-items:center; padding: 18px 0; border-top: 1px solid var(--rule-soft); }
.edu-item:first-child{ border-top:none; }
.edu-item .yr{ font-family:'IBM Plex Mono', monospace; font-size: 12.5px; color: var(--ink-faint); }
.edu-item h3{ font-size: 17px; margin-bottom: 3px; }
.edu-item .school{ color: var(--ink-soft); font-size: 14.5px; font-style: italic; font-family:'Fraunces', serif; }
.edu-item .score{ font-family:'IBM Plex Mono', monospace; font-size: 14px; color: var(--accent); text-align:right; white-space:nowrap; }

/* ---------------- timeline (experience) ---------------- */
.timeline{ position: relative; padding-left: 30px; }
.timeline::before{ content:""; position:absolute; left:6px; top:6px; bottom:6px; width:1px; background: var(--rule); }
.timeline-item{ position: relative; padding: 0 0 34px 24px; }
.timeline-item:last-child{ padding-bottom: 0; }
.timeline-item::before{
  content:""; position:absolute; left:-30px; top:5px; width:12px; height:12px;
  background: var(--paper); border: 2px solid var(--moss); border-radius: 50%;
}
.timeline-item .yr{ font-family:'IBM Plex Mono', monospace; font-size: 12px; color: var(--moss); text-transform: uppercase; letter-spacing: 0.06em; }
.timeline-item h3{ font-size: 19px; margin: 5px 0 2px; }
.timeline-item .org{ font-family:'Fraunces', serif; font-style: italic; color: var(--ink-soft); font-size: 15px; margin-bottom: 10px; }
.timeline-item ul{ margin: 8px 0 0; padding-left: 18px; color: var(--ink-soft); font-size: 15px; }
.timeline-item li{ margin-bottom: 5px; }

/* ---------------- achievements ---------------- */
.achieve-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.achieve-card{ background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius-md); padding: 22px; text-align:center; }
.achieve-card .big{ font-family:'Fraunces', serif; font-weight: 700; font-size: 26px; color: var(--accent); }
.achieve-card p{ color: var(--ink-soft); font-size: 14px; margin: 8px 0 0; }

/* ---------------- contact ---------------- */
.contact-grid{ display:grid; grid-template-columns: 0.9fr 1.1fr; gap: 48px; align-items:start; }
.contact-info h2{ font-size: 28px; margin-bottom: 14px; }
.contact-info p{ color: var(--ink-soft); margin-bottom: 26px; max-width: 42ch; }
.contact-list{ display:flex; flex-direction:column; gap: 4px; }
.contact-list a{
  display:flex; align-items:center; justify-content:space-between; padding: 14px 4px;
  border-top: 1px solid var(--rule-soft); font-family:'IBM Plex Mono', monospace; font-size: 13.5px;
  text-transform: uppercase; letter-spacing: 0.04em;
}
.contact-list a:first-child{ border-top:none; }
.contact-list a:hover{ color: var(--accent); }
.contact-list a .arrow{ transition: transform .15s ease; }
.contact-list a:hover .arrow{ transform: translateX(4px); }

.contact-form{
  background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius-lg);
  padding: 30px; box-shadow: var(--shadow);
}
.form-row{ margin-bottom: 18px; }
.form-row label{
  display:block; font-family:'IBM Plex Mono', monospace; font-size: 11.5px; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--ink-faint); margin-bottom: 7px;
}
.form-row input, .form-row textarea{
  width: 100%; padding: 12px 14px; font-family: 'Newsreader', serif; font-size: 15.5px;
  background: var(--surface-2); border: 1px solid var(--rule); border-radius: var(--radius-sm);
  color: var(--ink); resize: vertical;
}
.form-row input:focus, .form-row textarea:focus{ outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.form-note{ font-size: 12.5px; color: var(--ink-faint); margin-top: 14px; }
.form-status{ font-family:'IBM Plex Mono', monospace; font-size: 13px; margin-top: 14px; display:none; padding: 10px 12px; border-radius: var(--radius-sm); }
.form-status.show{ display:block; }
.form-status.ok{ background: rgba(79,92,55,0.12); color: var(--moss); border: 1px solid var(--moss-soft); }
.form-status.err{ background: rgba(138,51,36,0.1); color: var(--accent); border: 1px solid var(--accent-soft); }
/* honeypot field — hidden from real users, catches bots */
.hp-field{ position:absolute; left:-9999px; width:1px; height:1px; overflow:hidden; }

/* ---------------- footer ---------------- */
.footer{ border-top: 1px solid var(--rule); padding: 40px 0; }
.footer-inner{ display:flex; align-items:center; justify-content:space-between; gap: 20px; flex-wrap: wrap; }
.footer p{ font-family:'IBM Plex Mono', monospace; font-size: 11.5px; color: var(--ink-faint); letter-spacing: 0.03em; margin:0; }
.footer-links{ display:flex; gap: 20px; }
.footer-links a{ font-family:'IBM Plex Mono', monospace; font-size: 11.5px; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.05em; }
.footer-links a:hover{ color: var(--accent); }

/* ---------------- reveal on scroll ---------------- */
.reveal{ opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in{ opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  .reveal{ opacity: 1; transform: none; transition: none; }
}

/* ---------------- responsive ---------------- */
@media (max-width: 980px){
  .hero-grid{ grid-template-columns: 1fr; }
  .card-grid{ grid-template-columns: repeat(2, 1fr); }
  .skills-grid{ grid-template-columns: repeat(2, 1fr); }
  .stats-row{ grid-template-columns: repeat(2, 1fr); row-gap: 24px; }
  .achieve-grid{ grid-template-columns: 1fr; }
  .contact-grid{ grid-template-columns: 1fr; }
}

@media (max-width: 760px){
  .nav-links{
    position: absolute; top: 100%; left:0; right:0; background: var(--paper);
    border-bottom: 1px solid var(--rule); flex-direction: column; align-items:flex-start;
    padding: 18px 28px; gap: 16px; display:none;
  }
  .nav-links.open{ display:flex; }
  .nav-toggle{ display:flex; }
  .nav-cta .btn-outline{ display:none; }
  .card-grid{ grid-template-columns: 1fr; }
  .skills-grid{ grid-template-columns: 1fr; }
  .edu-item{ grid-template-columns: 1fr; gap: 4px; }
  .edu-item .score{ text-align:left; }
}