/* =========================================
   Portfolio v2 — Commercial-clean system
   (HP design principles, original identity)
   ========================================= */

:root {
  /* Surface */
  --canvas: #FFFFFF;
  --cloud:  #F6F6F4;
  --fog:    #ECECE7;
  --hairline: #E4E4DF;
  --steel:  #B8B8B3;

  /* Text on light */
  --ink:      #141414;
  --ink-soft: #2A2A2A;
  --charcoal: #3D3D3D;
  --graphite: #6B6B68;

  /* On dark slab */
  --on-ink:       #FFFFFF;
  --on-ink-mute:  #B8B8B3;
  --on-ink-line:  #2E2E2E;

  /* Brand accent — Amber #F17E22 */
  --primary:        #F17E22;
  --primary-bright: #F89E55; /* used inside dark slabs */
  --primary-deep:   #C45D10; /* pressed */

  /* Type */
  --font-display: "Manrope", "Pretendard", "Pretendard Variable", system-ui, sans-serif;
  --font-body:    "Pretendard", "Pretendard Variable", "Manrope", system-ui, sans-serif;
  --font-mono:    "JetBrains Mono", "IBM Plex Mono", monospace;

  /* Spacing */
  --xxs: 4px;
  --xs:  8px;
  --sm:  12px;
  --md:  16px;
  --lg:  20px;
  --xl:  24px;
  --xxl: 32px;
  --xxxl: 48px;
  --section: 96px;

  /* Radius */
  --r-none: 0;
  --r-xs:   2px;
  --r-sm:   3px;
  --r-md:   4px;
  --r-lg:   8px;
  --r-xl:   16px;
  --r-pill: 9999px;

  /* Elevation */
  --shadow-soft: 0 2px 8px rgba(20, 20, 20, 0.06), 0 1px 2px rgba(20, 20, 20, 0.04);
  --shadow-modal: 0 12px 32px rgba(20, 20, 20, 0.14);

  /* Layout */
  --max: 1366px;
  --gutter: 48px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  font-weight: 400;
  letter-spacing: -0.003em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  word-break: keep-all;
  overflow-x: hidden;
}
body[data-density="compact"] { --section: 72px; }

a { color: inherit; text-decoration: none; }
button { font-family: inherit; color: inherit; }
::selection { background: var(--ink); color: var(--canvas); }

/* =========================================
   Section band system
   ========================================= */
section {
  position: relative;
  padding: var(--section) 0;
}
section[data-band="canvas"] { background: var(--canvas); color: var(--ink); }
section[data-band="cloud"]  { background: var(--cloud);  color: var(--ink); }
section[data-band="ink"]    { background: var(--ink);    color: var(--on-ink); }

/* Container */
section > .promo__inner,
section > .section-inner,
.section-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* Direct children (most sections use this approach for backwards compat) */
.about, .skills, .career, .projects, .contact, .promo {
  padding: var(--section) var(--gutter);
}
.about, .skills, .career, .projects, .contact {
  max-width: none; /* allow band fill */
}
.about > *, .skills > *, .career > *, .projects > *, .contact > *, .promo > * {
  max-width: var(--max);
  margin-left: auto;
  margin-right: auto;
}

/* =========================================
   Type primitives
   ========================================= */
.section-label {
  display: flex;
  align-items: center;
  gap: var(--md);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--graphite);
  margin-bottom: var(--xxl);
  max-width: var(--max);
  margin-left: auto;
  margin-right: auto;
}
[data-band="ink"] .section-label { color: var(--on-ink-mute); }
.section-label__no { color: var(--primary); font-weight: 600; }
[data-band="ink"] .section-label__no { color: var(--primary-bright); }
.section-label__line { flex: 0 0 56px; height: 1px; background: var(--hairline); }
[data-band="ink"] .section-label__line { background: var(--on-ink-line); }

.section-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.0;
  letter-spacing: -0.022em;
  margin: 0 0 var(--lg) 0;
  text-wrap: balance;
}
.section-sub {
  font-size: 18px;
  line-height: 1.5;
  color: var(--charcoal);
  margin: 0;
  max-width: 60ch;
  text-wrap: pretty;
}
[data-band="ink"] .section-sub { color: var(--on-ink-mute); }

/* =========================================
   Buttons & pills
   ========================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--xs);
  height: 44px;
  padding: 0 var(--xl);
  border-radius: var(--r-md);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  white-space: nowrap;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background .15s, border-color .15s, color .15s;
}
.btn--primary { background: var(--primary); color: var(--on-ink); }
.btn--primary:hover { background: var(--primary-deep); }
.btn--ink { background: var(--ink); color: var(--on-ink); }
.btn--outline { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn--outline:hover { background: var(--ink); color: var(--on-ink); }
.btn--outline-ink {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}
.btn--outline-ink:hover { background: var(--ink); color: var(--on-ink); }
.btn__arrow { font-size: 16px; transition: transform .15s; }
.btn:hover .btn__arrow { transform: translateX(3px); }

.pill {
  background: transparent;
  border: 1px solid var(--hairline);
  color: var(--charcoal);
  padding: 8px 16px;
  border-radius: var(--r-pill);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all .15s;
}
.pill:hover { border-color: var(--ink); color: var(--ink); }
.pill.is-active { background: var(--ink); border-color: var(--ink); color: var(--on-ink); }

/* =========================================
   Hero
   ========================================= */
.hero {
  padding: 0 0 var(--xxxl);
  display: flex;
  flex-direction: column;
  background: var(--canvas);
}
.hero > * { max-width: var(--max); margin-left: auto; margin-right: auto; width: 100%; }
.hero > .hero__utility { max-width: none; }
.hero > .hero__topbar,
.hero > .hero__body,
.hero > .hero__footnote { padding-left: var(--gutter); padding-right: var(--gutter); }

/* Utility strip — dark thin band at very top */
.hero__utility {
  background: var(--ink);
  color: var(--on-ink-mute);
  height: 36px;
  display: flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}
.hero__utility-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--md);
}
.hero__utility-item { color: var(--on-ink); }
.hero__utility-item--end { color: var(--on-ink-mute); }
.hero__utility-sep { color: var(--on-ink-line); }
.hero__utility-flex { flex: 1; }

.hero__topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
  padding: 0;
  border-bottom: 1px solid var(--hairline);
  font-size: 13px;
  color: var(--charcoal);
  width: 100%;
}
.hero__brand { display: flex; align-items: center; gap: var(--md); }
.hero__monogram {
  display: inline-flex;
  width: 32px; height: 32px;
  border-radius: var(--r-md);
  background: var(--ink);
  color: var(--on-ink);
  font-family: var(--font-display);
  font-weight: 700;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  letter-spacing: 0.04em;
}
.hero__brand-name { color: var(--ink); font-weight: 500; font-size: 14px; }
.hero__nav { display: flex; gap: var(--xxl); }
.hero__nav a {
  color: var(--charcoal);
  font-size: 14px;
  font-weight: 500;
  padding: var(--xs) 0;
  position: relative;
  transition: color .15s;
}
.hero__nav a:hover { color: var(--ink); }
.hero__nav a:hover::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0;
  height: 2px; background: var(--primary);
}
.hero__meta { display: flex; gap: var(--xs); align-items: baseline; font-family: var(--font-mono); }
.hero__meta-label {
  color: var(--graphite); font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.1em;
}
.hero__meta-value { color: var(--ink); font-size: 13px; }

.hero__body {
  display: flex;
  flex-direction: column;
  padding: var(--xxxl) 0;
  gap: var(--xxl);
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sm);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--charcoal);
  letter-spacing: 0.04em;
}
.dot { width: 8px; height: 8px; border-radius: 50%; }
.dot--green {
  background: var(--primary);
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--primary) 18%, transparent);
}

.hero__title-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--xxxl);
  align-items: start;
}
.hero__title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(40px, 6vw, 76px);
  line-height: 1.05;
  letter-spacing: -0.032em;
  margin: 0;
  color: var(--ink);
  text-wrap: balance;
}
.hero__title em {
  font-style: normal;
  color: var(--primary);
  font-weight: 500;
}

/* Signature stamp — original gesture (NOT HP chevron) */
.hero__stamp {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  width: 200px;
  border: 1px solid var(--ink);
  background: var(--canvas);
  flex-shrink: 0;
}
.hero__stamp-mark {
  background: var(--ink);
  color: var(--on-ink);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 56px;
  text-align: center;
  letter-spacing: -0.02em;
  padding: 18px 0 14px;
  line-height: 1;
}
.hero__stamp-mark--photo {
  padding: 0;
  background: var(--canvas);
  aspect-ratio: 1 / 1.18;
  overflow: hidden;
  position: relative;
}
.hero__stamp-mark--photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: grayscale(0.08) contrast(1.02);
}
.hero__stamp-meta {
  display: flex;
  justify-content: space-between;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink);
  letter-spacing: 0.12em;
  border-top: 1px solid var(--ink);
  background: var(--canvas);
}

.hero__sub {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--xxxl);
  padding-top: var(--xxl);
  border-top: 1px solid var(--hairline);
  align-items: start;
}
.hero__name { display: flex; flex-direction: column; gap: 4px; }
.hero__name-ko {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.hero__name-en {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--graphite);
  letter-spacing: 0.06em;
}
.hero__summary {
  font-size: 18px;
  line-height: 1.55;
  color: var(--charcoal);
  margin: 0;
  text-wrap: pretty;
  white-space: pre-line;
}

.hero__cta-row {
  display: flex;
  gap: var(--md);
  flex-wrap: wrap;
  padding-top: var(--xxl);
  border-top: 1px solid var(--hairline);
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}
.stat {
  background: var(--canvas);
  padding: var(--xxl) var(--xl);
}
.stat__value {
  font-family: var(--font-display);
  font-size: clamp(36px, 4.5vw, 56px);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1;
  color: var(--ink);
}
.stat__unit {
  font-size: 0.36em;
  color: var(--graphite);
  margin-left: 6px;
  font-weight: 400;
}
.stat__label {
  margin-top: var(--sm);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--graphite);
}

.hero__footnote {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--graphite);
  padding-top: var(--lg);
  border-top: 1px solid var(--hairline);
  width: 100%;
}

/* =========================================
   About — cloud band
   ========================================= */
.about__grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: var(--xxxl);
  align-items: start;
}
.about__title {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 500;
  letter-spacing: -0.022em;
  line-height: 1.1;
  margin: 0 0 var(--xl) 0;
  text-wrap: balance;
}
.about__lead {
  font-size: 17px;
  line-height: 1.6;
  color: var(--charcoal);
  margin: 0 0 var(--xxl) 0;
}
.about__bullets { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: var(--sm); }
.about__bullets li {
  position: relative;
  padding-left: 24px;
  color: var(--ink);
  font-size: 15px;
  line-height: 1.5;
}
.about__bullets li::before {
  content: "";
  position: absolute;
  left: 0; top: 10px;
  width: 14px; height: 2px;
  background: var(--primary);
}

.about__right {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--md);
}
.competency {
  background: var(--canvas);
  border-radius: var(--r-xl);
  padding: var(--xl);
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  gap: var(--sm);
}
.competency__no {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--primary);
  letter-spacing: 0.1em;
  font-weight: 600;
}
.competency__body h3 {
  margin: 0 0 6px 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.012em;
  color: var(--ink);
}
.competency__body p {
  margin: 0;
  color: var(--charcoal);
  font-size: 14px;
  line-height: 1.5;
}

/* Category-icon style row — Core Domains */
.about__domains {
  margin-top: var(--xxxl);
  padding-top: var(--xxl);
  border-top: 1px solid var(--hairline);
}
.about__domains-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--graphite);
  margin-bottom: var(--lg);
}
.about__domains-row {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--xs);
}
.domain {
  background: var(--canvas);
  border-radius: var(--r-lg);
  padding: var(--lg);
  border: 1px solid var(--hairline);
  transition: border-color .15s, transform .15s;
  display: flex;
  flex-direction: column;
  gap: var(--xs);
  min-height: 132px;
}
.domain:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
}
.domain__abbr {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--primary);
  line-height: 1;
  margin-bottom: var(--sm);
}
.domain__name {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.domain__note {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--graphite);
  letter-spacing: 0.02em;
  line-height: 1.4;
}

/* =========================================
   Skills — canvas band
   ========================================= */
.skills__head {
  max-width: 1100px;
  margin-bottom: var(--xxxl);
}
.skills__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--md);
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
}
.skill-group {
  background: var(--canvas);
  border-radius: var(--r-xl);
  padding: var(--xxl);
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--hairline);
}
.skill-group__title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--primary);
  margin: 0 0 var(--lg) 0;
  font-weight: 600;
}
.skill-group__items { display: flex; flex-direction: column; gap: var(--sm); }
.skill {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--md);
  font-size: 14px;
}
.skill__name { color: var(--ink); font-weight: 500; }
.skill__bar { display: inline-flex; gap: 4px; }
.skill__pip {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--hairline);
}
.skill__pip.is-on { background: var(--primary); }

/* =========================================
   Career timeline — cloud band
   ========================================= */
.career__head {
  max-width: 1100px;
  margin-bottom: var(--xxxl);
}
.career__head .section-title,
.career__head .section-sub { margin-left: 0; margin-right: auto; }
.career__head .section-sub { max-width: 60ch; }

.timeline {
  list-style: none;
  margin: 0 auto;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--md);
  max-width: 1100px;
}
.timeline__row {
  display: grid;
  grid-template-columns: 200px 1fr;
  align-items: start;
  background: var(--canvas);
  border-radius: var(--r-xl);
  padding: var(--xxl);
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--hairline);
  gap: var(--xxl);
  position: relative;
}
.timeline__row:first-child::before {
  display: none;
}
.timeline__period { display: flex; flex-direction: column; gap: 4px; }
.timeline__years {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink);
  font-weight: 500;
}
.timeline__span {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--graphite);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.timeline__dot { display: none; }
.timeline__body { padding: 0; }
.timeline__head-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--md);
  margin-bottom: var(--md);
  flex-wrap: wrap;
}
.timeline__company {
  margin: 0;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--ink);
}
.timeline__client {
  font-size: 13px;
  color: var(--graphite);
  margin-top: 4px;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}
.timeline__sep { color: var(--hairline); margin: 0 6px; }
.timeline__role {
  font-family: var(--font-display);
  font-size: 11px;
  color: var(--primary);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 700;
  border: 1px solid var(--primary);
  padding: 4px 10px;
  border-radius: var(--r-md);
}
.timeline__duties {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 6px var(--xxl);
}
.timeline__duties li {
  font-size: 13px;
  color: var(--charcoal);
  position: relative;
  padding-left: 14px;
  line-height: 1.5;
}
.timeline__duties li::before {
  content: ""; position: absolute;
  left: 0; top: 9px;
  width: 6px; height: 1px; background: var(--graphite);
}

/* =========================================
   Promo (dark ink slab) — Featured project
   ========================================= */
.promo {
  background: var(--ink);
  color: var(--on-ink);
  padding: var(--section) var(--gutter);
}
.promo > * { max-width: var(--max); margin-left: auto; margin-right: auto; }
.promo__eyebrow {
  display: flex;
  align-items: center;
  gap: var(--md);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--on-ink-mute);
  margin-bottom: var(--xxl);
}
.promo__eyebrow-no { color: var(--primary-bright); font-weight: 600; }
.promo__eyebrow-line { flex: 0 0 56px; height: 1px; background: var(--on-ink-line); }
.promo__body {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--xxxl);
  align-items: start;
}
.promo__title {
  font-family: var(--font-display);
  font-size: clamp(40px, 5.5vw, 72px);
  font-weight: 500;
  line-height: 1.0;
  letter-spacing: -0.03em;
  margin: 0 0 var(--md) 0;
  color: var(--on-ink);
  text-wrap: balance;
}
.promo__sub {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--primary-bright);
  letter-spacing: 0.04em;
  margin-bottom: var(--xl);
}
.promo__lead {
  font-size: 18px;
  line-height: 1.5;
  color: var(--on-ink);
  margin: 0 0 var(--xl) 0;
  max-width: 56ch;
  text-wrap: pretty;
}
.promo__tags { display: flex; flex-wrap: wrap; gap: 6px; }
.promo__tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--on-ink-mute);
  padding: 4px 10px;
  border: 1px solid var(--on-ink-line);
  border-radius: var(--r-md);
}
.promo__metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--on-ink-line);
  border: 1px solid var(--on-ink-line);
  border-radius: var(--r-xl);
  overflow: hidden;
}
.promo__metric {
  background: var(--ink);
  padding: var(--xl);
}
.promo__metric-value {
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--on-ink);
}
.promo__metric-value span {
  display: block;
  font-size: 13px;
  font-weight: 400;
  color: var(--on-ink-mute);
  margin-top: 6px;
  letter-spacing: 0;
}
.promo__metric-label {
  margin-top: var(--sm);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--on-ink-mute);
}
.promo__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--md);
  margin-top: var(--xxxl);
  padding: var(--md) 0;
  border-top: 1px solid var(--on-ink-line);
  border-bottom: 1px solid var(--on-ink-line);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary-bright);
  width: 100%;
  justify-content: space-between;
  padding-left: 0;
  padding-right: 4px;
  transition: color .15s;
}
.promo__cta:hover { color: var(--on-ink); }
.promo__cta-arrow { font-size: 20px; }

/* =========================================
   Projects — canvas band
   ========================================= */
.projects__head { max-width: 1100px; margin-bottom: var(--xl); }
.projects__title-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--xl);
  max-width: 1100px;
}
.projects__title-row .section-title { margin-bottom: 0; }
.projects__bulk-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--xs);
  width: 100%;
  max-width: 1100px;
  box-sizing: border-box;
  margin: 0 auto var(--md);
}
.projects__bulk-btn {
  min-height: 40px;
  padding: 0 16px;
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: border-color .15s, background .15s, color .15s, opacity .15s;
}
.projects__bulk-btn:hover:not(:disabled) {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--on-ink);
}
.projects__bulk-btn.is-open {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--on-ink);
}
.projects__bulk-btn:disabled {
  cursor: default;
  opacity: .42;
}
.projects__filters { display: flex; gap: var(--xs); margin-top: var(--xl); flex-wrap: wrap; }
.projects__list { display: flex; flex-direction: column; gap: var(--md); max-width: 1100px;}

.project {
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-soft);
  transition: border-color .15s, box-shadow .15s;
  overflow: hidden;
  position: relative;
  max-width: 1100px;
}
.project:hover { border-color: var(--steel); }
.project.is-open { border-color: var(--ink); }

.project__head {
  width: 100%;
  display: grid;
  grid-template-columns: 80px 1fr 40px;
  gap: var(--xl);
  align-items: start;
  padding: var(--xxl);
  background: transparent;
  border: none;
  text-align: left;
  cursor: pointer;
}
.project__no {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--graphite);
  font-weight: 600;
  letter-spacing: 0.04em;
  padding-top: var(--xs);
}
.project.is-flagship .project__no { color: var(--graphite); }
.project__meta-row {
  display: flex;
  align-items: center;
  gap: var(--xs);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--graphite);
  margin-bottom: var(--sm);
  flex-wrap: wrap;
}
.project__dot { color: var(--hairline); }
.project__role { color: var(--primary); font-weight: 600; }
.project__badge {
  background: var(--ink);
  color: var(--on-ink);
  padding: 3px 8px;
  border-radius: var(--r-xs);
  font-size: 10px;
  letter-spacing: 0.12em;
  font-weight: 600;
}
.project__badge--active { background: var(--primary); }
.project__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 2.4vw, 32px);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--ink);
}
.project__subtitle {
  margin-top: 4px;
  color: var(--graphite);
  font-size: 14px;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}
.project__summary {
  margin: var(--md) 0 0 0;
  font-size: 16px;
  line-height: 1.55;
  color: var(--charcoal);
  max-width: 68ch;
  text-wrap: pretty;
}

/* Impact preview inside closed/expanded card head */
.project__impact-preview {
  margin-top: var(--lg);
  padding-top: var(--md);
  border-top: 1px solid var(--hairline);
}
.project__impact-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: var(--sm);
  font-weight: 600;
}
.project__chev {
  font-family: var(--font-mono);
  font-size: 28px;
  color: var(--steel);
  text-align: right;
  font-weight: 300;
  line-height: 1;
  padding-top: 4px;
  transition: color .15s;
}
.project.is-open .project__chev { color: var(--ink); }

.project__detail {
  overflow: hidden;
  transition: max-height .35s cubic-bezier(.25,.1,.25,1);
}
.project__detail-inner {
  padding: 0 var(--xxl) var(--xxl) calc(80px + var(--xxl) + var(--xl));
}
.project__detail-inner > .project__col {
  margin-bottom: var(--xl);
  padding-top: var(--md);
  border-top: 1px solid var(--hairline);
}
.project__cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--xxxl);
  margin-bottom: var(--xl);
  padding-top: var(--md);
  border-top: 1px solid var(--hairline);
}
.project__col-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: var(--md);
  font-weight: 600;
  padding-top: var(--md);
}
.project__list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: var(--xs); }
.project__list li {
  font-size: 14px;
  color: var(--ink);
  padding-left: 18px;
  position: relative;
  line-height: 1.55;
}
.project__list li::before {
  content: ""; position: absolute;
  left: 0; top: 10px;
  width: 8px; height: 1px; background: var(--charcoal);
}
.project__list--impact li { font-weight: 500; }
.project__list--impact li::before {
  background: var(--primary);
  width: 10px;
  height: 2px;
  top: 9px;
}
.project__tags {
  display: flex; flex-wrap: wrap; gap: 6px;
  padding-top: var(--md);
  border-top: 1px solid var(--hairline);
}
.tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--graphite);
  padding: 4px 10px;
  background: var(--cloud);
  border-radius: var(--r-md);
}

.projects__list.is-compact .project__head { padding: var(--xl); }
.projects__list.is-compact .project__title { font-size: clamp(18px, 1.8vw, 22px); }
.projects__list.is-compact .project__summary { font-size: 14px; margin-top: 8px; }

/* =========================================
   Contact — dark ink slab footer
   ========================================= */
.contact { padding-bottom: var(--xxxl); }
.contact .section-label__no { color: var(--primary-bright); }
.contact .section-label { color: var(--on-ink-mute); }
.contact .section-label__line { background: var(--on-ink-line); }

.contact__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--xxxl);
  align-items: start;
  padding-bottom: var(--xxxl);
  border-bottom: 1px solid var(--on-ink-line);
}
.contact__title {
  font-family: var(--font-display);
  font-size: clamp(36px, 5.5vw, 72px);
  font-weight: 500;
  letter-spacing: -0.032em;
  line-height: 1.0;
  margin: 0 0 var(--lg) 0;
  text-wrap: balance;
  color: var(--on-ink);
}
.contact__desc {
  font-size: 18px;
  line-height: 1.55;
  color: var(--on-ink-mute);
  margin: 0;
  max-width: 50ch;
}
.contact__side { display: flex; flex-direction: column; }
.contact__row {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: var(--xl);
  padding: var(--md) 0;
  border-bottom: 1px solid var(--on-ink-line);
  align-items: baseline;
}
.contact__row:last-child { border-bottom: none; }
.contact__label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--on-ink-mute);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.contact__value { font-size: 15px; color: var(--on-ink); }
.contact__value em {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--on-ink-mute);
  font-style: normal;
  margin-left: var(--xs);
}
.contact__value--mono { font-family: var(--font-mono); }

.contact__foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--xxl);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--on-ink-mute);
  letter-spacing: 0.04em;
  flex-wrap: wrap;
  gap: var(--md);
}

/* =========================================
   Responsive
   ========================================= */
@media (max-width: 1100px) {
  :root { --gutter: 32px; --section: 80px; }
  .about__grid { grid-template-columns: 1fr; gap: var(--xxl); }
  .about__right { grid-template-columns: 1fr 1fr; }
  .about__domains-row { grid-template-columns: repeat(3, 1fr); }
  .skills__grid { grid-template-columns: repeat(2, 1fr); }
  .hero__sub { grid-template-columns: 1fr; gap: var(--lg); }
  .hero__stats { grid-template-columns: repeat(2, 1fr); }
  .contact__grid { grid-template-columns: 1fr; }
  .project__detail-inner { padding-left: var(--xxl); padding-right: var(--xxl); }
  .project__cols { grid-template-columns: 1fr; gap: var(--xl); }
  .timeline__row { grid-template-columns: 1fr; gap: var(--md); }
  .timeline__duties { grid-template-columns: 1fr; }
  .promo__body { grid-template-columns: 1fr; gap: var(--xxl); }
  .hero__title-row { grid-template-columns: 1fr; }
  .hero__stamp { width: 140px; align-self: flex-start; }
}
@media (max-width: 720px) {
  :root { --gutter: 20px; --section: 64px; }
  .hero__nav { display: none; }
  .hero__utility-inner { font-size: 10px; gap: var(--xs); }
  .skills__grid { grid-template-columns: 1fr; }
  .hero__stats { gap: 1px; }
  .about__right { grid-template-columns: 1fr; }
  .about__domains-row { grid-template-columns: repeat(2, 1fr); }
  .project__head { grid-template-columns: 50px 1fr 30px; padding: var(--lg); gap: var(--sm); }
  .project__detail-inner { padding: 0 var(--lg) var(--lg); }
  .projects__title-row { align-items: flex-start; flex-direction: column; gap: var(--lg); }
  .projects__bulk-actions { width: 100%; }
  .projects__bulk-btn { min-width: 130px; }
  .promo__metrics { grid-template-columns: 1fr; }
  .contact__row { grid-template-columns: 70px 1fr; gap: var(--md); }
}