/* =========================================================
   SATYAJIT SWAIN — PORTFOLIO DESIGN SYSTEM v2
   Concept: "Founder Profile" — an editorial feature spread.
   Pure white paper, ink-navy + confident crimson, big serif
   headline type, registration-mark photo frames.
   ========================================================= */

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

:root {
  /* ---- Color tokens ---- */
  --bg:          #FFFFFF;
  --bg-soft:     #F6F5F1;
  --ink:         #14181F;
  --body:        #454B54;
  --muted:       #868D97;
  --line:        #E7E5DF;
  --line-strong: #D8D5CC;
  --navy:        #17324F;
  --navy-tint:   rgba(23, 50, 79, 0.06);
  --crimson:     #C3122B;
  --crimson-tint:rgba(195, 18, 43, 0.08);

  /* ---- Type ---- */
  --font-display: 'Instrument Serif', 'Georgia', serif;
  --font-sans:    'Archivo', sans-serif;
  --font-mono:    'IBM Plex Mono', 'Courier New', monospace;

  --container: 1200px;
  --gutter: 22px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--body);
  line-height: 1.65;
  overflow-x: hidden;
}

a { color: inherit; }
img { display: block; max-width: 100%; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }

/* ---------------------------------------------------------
   Typography utilities
   --------------------------------------------------------- */

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--crimson);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.eyebrow::before { content: ''; width: 22px; height: 1px; background: var(--crimson); display: inline-block; }
.eyebrow.center { justify-content: center; }
.eyebrow.center::before { display: none; }

.field-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.section-title {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(30px, 6vw, 46px);
  color: var(--ink);
  letter-spacing: -0.01em;
  margin-bottom: 40px;
}

.section-title.centered { text-align: center; }

h1, h2, h3 { font-family: var(--font-display); color: var(--ink); font-weight: 400; }

.dropcap::first-letter {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 64px;
  line-height: 0.75;
  float: left;
  color: var(--navy);
  padding-right: 10px;
  padding-top: 6px;
}

/* ---------------------------------------------------------
   Section rhythm
   --------------------------------------------------------- */

.section { padding: 72px 0; border-top: 1px solid var(--line); }
.section.alt-bg { background: var(--bg-soft); }
.section:first-of-type { border-top: none; }

/* ---------------------------------------------------------
   Buttons
   --------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 14px 24px;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid var(--navy);
  transition: all 0.25s ease;
  background: transparent;
  color: var(--navy);
}

.btn-solid { background: var(--navy); color: #fff; }
.btn-solid:hover { background: var(--ink); border-color: var(--ink); transform: translateY(-1px); }

.btn-ghost { border-color: var(--crimson); color: var(--crimson); }
.btn-ghost:hover { background: var(--crimson-tint); }

.btn-sm { padding: 9px 16px; font-size: 11px; }

/* ---------------------------------------------------------
   Registration-mark photo frame — signature element
   --------------------------------------------------------- */

.reg-frame { position: relative; border: 1px solid var(--navy); }

.reg-mark {
  position: absolute;
  width: 14px;
  height: 14px;
  pointer-events: none;
}
.reg-mark::before, .reg-mark::after { content: ''; position: absolute; background: var(--crimson); }
.reg-mark::before { top: 50%; left: 0; width: 100%; height: 1px; transform: translateY(-50%); }
.reg-mark::after  { left: 50%; top: 0; height: 100%; width: 1px; transform: translateX(-50%); }

.reg-mark.tl { top: -7px; left: -7px; }
.reg-mark.br { bottom: -7px; right: -7px; }

.tag-sticker {
  position: absolute;
  top: 16px;
  left: -1px;
  background: var(--crimson);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 6px 12px;
}

.img-caption {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-top: 10px;
}

/* ---------------------------------------------------------
   Header / Navigation
   --------------------------------------------------------- */

header {
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.header-content {
  max-width: var(--container);
  margin: 0 auto;
  padding: 18px var(--gutter);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo { font-family: var(--font-display); font-style: italic; font-size: 20px; color: var(--ink); }
.logo span { color: var(--crimson); font-style: normal; }

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 18px;
  cursor: pointer;
  color: var(--ink);
  position: absolute;
  right: var(--gutter);
  top: 50%;
  transform: translateY(-50%);
}

nav ul { display: flex; list-style: none; gap: 28px; }

nav ul li a {
  color: var(--body);
  text-decoration: none;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  transition: color 0.25s;
  position: relative;
  padding-bottom: 4px;
}

nav ul li a::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--crimson);
  transition: width 0.25s;
}

nav ul li a:hover, nav ul li a.active { color: var(--ink); }
nav ul li a:hover::after, nav ul li a.active::after { width: 100%; }

/* ---------------------------------------------------------
   Hero
   --------------------------------------------------------- */

.hero { margin-top: 64px; padding: 56px 0 0; }

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 44px;
  align-items: center;
  padding-bottom: 56px;
}

.hero-title {
  font-size: clamp(42px, 11vw, 78px);
  font-style: italic;
  line-height: 0.98;
  margin: 8px 0 20px;
}

.hero-lead {
  font-size: 17px;
  line-height: 1.75;
  color: var(--body);
  max-width: 46ch;
  margin-bottom: 30px;
}

.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.hero-photo-wrap { position: relative; margin: 26px auto 0; max-width: 240px; }
.hero-photo { width: 100%; height: 290px; object-fit: cover; filter: grayscale(8%) contrast(1.03); }

.stat-rule-row {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  text-align: center;
}

.stat-item { padding: 22px 26px; border-right: 1px solid var(--line); flex: 1 1 auto; }
.stat-item:last-child { border-right: none; }

.stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--crimson);
  font-weight: 600;
}

.stat-tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-top: 5px;
}

/* ---------------------------------------------------------
   Profile (About) — editorial feature blocks
   --------------------------------------------------------- */

.profile-lead { font-size: 18px; color: var(--ink); line-height: 1.75; max-width: 70ch; margin-bottom: 56px; }

.profile-blocks { display: flex; flex-direction: column; gap: 60px; }

.profile-block { display: flex; flex-direction: column; gap: 26px; }

.profile-photo { flex: none; margin: 6px; }
.profile-photo img { width: 100%; height: 260px; object-fit: cover; filter: grayscale(10%); }

.profile-text h3 { font-style: italic; font-size: 24px; margin-bottom: 14px; }
.profile-text p { font-size: 14.5px; margin-bottom: 12px; }

/* ---------------------------------------------------------
   Timeline (Journey)
   --------------------------------------------------------- */

.timeline-list { border-top: 1px solid var(--line); }

.timeline-row { display: flex; flex-direction: column; gap: 8px; padding: 26px 0; border-bottom: 1px solid var(--line); }

.timeline-row.zebra { background: var(--bg-soft); margin: 0 calc(-1 * var(--gutter)); padding-left: var(--gutter); padding-right: var(--gutter); }

.timeline-year { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em; color: var(--crimson); text-transform: uppercase; }

.timeline-body h3 { font-style: italic; font-size: 20px; margin-bottom: 6px; }
.timeline-body p { font-size: 14px; }

.timeline-thumb { width: 100%; max-width: 220px; height: 130px; object-fit: cover; margin-top: 14px; filter: grayscale(15%); }

.learn-more { display: inline-flex; margin-top: 34px; }

/* ---------------------------------------------------------
   Capabilities (Skills) — index list
   --------------------------------------------------------- */

.capability-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 30px; flex-wrap: wrap; margin-bottom: 20px; }

.capability-photo { width: 220px; height: 140px; object-fit: cover; filter: grayscale(12%); margin: 6px; }

.capability-list { border-top: 1px solid var(--line); }

.capability-row { display: flex; align-items: flex-start; gap: 22px; padding: 24px 0; border-bottom: 1px solid var(--line); }

.cap-num { font-family: var(--font-mono); font-size: 13px; color: var(--muted); padding-top: 3px; min-width: 26px; }
.cap-icon { font-size: 18px; color: var(--navy); padding-top: 2px; min-width: 22px; }
.capability-row h3 { font-style: italic; font-size: 18px; margin-bottom: 6px; }
.capability-row p { font-size: 13.5px; }

/* ---------------------------------------------------------
   Selected work (Projects)
   --------------------------------------------------------- */

.projects-grid { display: grid; grid-template-columns: 1fr; gap: 26px; }

.project-card { border: 1px solid var(--line-strong); background: var(--bg); overflow: hidden; transition: border-color 0.25s, transform 0.25s; }
.project-card:hover { border-color: var(--navy); transform: translateY(-2px); }

.project-image-wrap { height: 175px; overflow: hidden; border-bottom: 1px solid var(--line-strong); }
.project-image { width: 100%; height: 100%; object-fit: cover; filter: grayscale(20%); transition: filter 0.3s; }
.project-card:hover .project-image { filter: grayscale(0%); }

.project-info { padding: 22px; }
.project-info h3 { font-style: italic; font-size: 17px; margin-bottom: 8px; }
.project-info p { font-size: 13px; margin-bottom: 0; }

/* ---------------------------------------------------------
   Contact
   --------------------------------------------------------- */

.contact-statement { font-style: italic; font-size: clamp(26px, 5vw, 38px); color: var(--ink); max-width: 20ch; margin-bottom: 46px; }

.contact-grid { display: grid; grid-template-columns: 1fr; gap: 46px; }

.contact-item { display: flex; gap: 14px; margin-bottom: 26px; align-items: flex-start; }

.contact-icon {
  width: 38px; height: 38px; min-width: 38px;
  border: 1px solid var(--navy);
  display: flex; align-items: center; justify-content: center;
  color: var(--navy);
  font-size: 13px;
}

.contact-item p { font-size: 14px; color: var(--body); }

.form-group { margin-bottom: 22px; }

.form-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  padding: 10px 2px;
  border: none;
  border-bottom: 1px solid var(--line-strong);
  background: transparent;
  font-family: var(--font-sans);
  color: var(--ink);
  font-size: 14px;
  transition: border-color 0.25s;
}

.form-control:focus { outline: none; border-color: var(--crimson); }
textarea.form-control { min-height: 90px; resize: vertical; }

.submit-btn {
  background: var(--crimson);
  color: #fff;
  border: none;
  padding: 13px 26px;
  font-family: var(--font-mono);
  font-weight: 600;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 11px;
  transition: background 0.25s;
}

.submit-btn:hover { background: #9E0E22; }

/* ---------------------------------------------------------
   Footer — kept light, per the all-white brief
   --------------------------------------------------------- */

footer { background: var(--bg); border-top: 1px solid var(--line-strong); padding: 50px var(--gutter) 20px; }

.footer-content {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-bottom: 30px;
}

.footer-col h3 {
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 14px;
  color: var(--navy);
  font-weight: 600;
}

.footer-col p, .footer-col a {
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  display: block;
  margin-bottom: 8px;
  transition: color 0.25s;
}

.footer-col a:hover { color: var(--crimson); }

.social-icons { display: flex; gap: 8px; margin-top: 14px; }

.social-icons a {
  width: 32px; height: 32px;
  border: 1px solid var(--line-strong);
  display: flex; align-items: center; justify-content: center;
  color: var(--body);
  transition: all 0.25s;
  margin-bottom: 0;
}

.social-icons a:hover { border-color: var(--crimson); color: var(--crimson); }

.copyright {
  text-align: center;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
}

/* ---------------------------------------------------------
   Back to top
   --------------------------------------------------------- */

.back-to-top {
  position: fixed;
  bottom: 18px;
  right: 18px;
  width: 42px;
  height: 42px;
  background: var(--navy);
  color: #fff;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
  z-index: 999;
  text-decoration: none;
}

.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--crimson); transform: translateY(-2px); }

/* ---------------------------------------------------------
   Scroll-reveal
   --------------------------------------------------------- */

.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* ---------------------------------------------------------
   Life story page — chapters
   --------------------------------------------------------- */

.life-story-section { padding: 104px 0 70px; border-top: none; }

.story-intro { text-align: center; max-width: 620px; margin: 0 auto 60px; }
.story-intro p { color: var(--body); font-size: 14.5px; margin-top: 12px; }

.life-story-content { max-width: 720px; margin: 0 auto; }

.story-chapter { padding: 42px 0; border-top: 1px solid var(--line); }
.story-chapter:first-child { border-top: none; }

.chapter-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--crimson);
  margin-bottom: 10px;
}

.chapter-year {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(24px, 4.5vw, 32px);
  color: var(--ink);
  margin-bottom: 24px;
}

.chapter-content { font-size: 15px; line-height: 1.8; color: var(--body); margin-bottom: 18px; }
.chapter-content strong { color: var(--ink); font-weight: 600; }

.chapter-image { width: 100%; max-width: 320px; height: 190px; object-fit: cover; filter: grayscale(15%); margin: 6px 0 20px; }

.story-nav-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--crimson);
  text-decoration: none;
}

/* ---------------------------------------------------------
   Mobile nav
   --------------------------------------------------------- */

@media (max-width: 860px) {
  .mobile-menu-btn { display: block; }

  nav ul {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    padding: 16px var(--gutter);
    gap: 4px;
  }

  nav ul.active { display: flex; }

  nav ul li a { display: block; padding: 10px 0; border-bottom: 1px solid var(--line); }
  nav ul li:last-child a { border-bottom: none; }
}

/* ---------------------------------------------------------
   Breakpoints — tablet / desktop
   --------------------------------------------------------- */

@media (min-width: 861px) {
  .hero-grid { grid-template-columns: 1.15fr 0.85fr; align-items: start; }
  .hero-photo-wrap { max-width: 280px; margin: 6px 0 0 auto; }
  .hero-photo { height: 340px; }

  .profile-block { flex-direction: row; align-items: center; gap: 56px; }
  .profile-block.reverse { flex-direction: row-reverse; }
  .profile-photo { flex: 0 0 40%; }
  .profile-photo img { height: 380px; }
  .profile-text { flex: 1; }
  .profile-text p { font-size: 15px; }

  .timeline-row { flex-direction: row; gap: 44px; align-items: baseline; }
  .timeline-row.zebra { padding-top: 26px; padding-bottom: 26px; }
  .timeline-year { flex: 0 0 150px; font-size: 12px; }
  .timeline-body { flex: 1; }

  .capability-list { column-count: 2; column-gap: 40px; }
  .capability-row { break-inside: avoid; }

  .contact-grid { grid-template-columns: 1fr 1fr; gap: 80px; }
}

@media (min-width: 640px) {
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .projects-grid { grid-template-columns: repeat(3, 1fr); }
  .section { padding: 96px 0; }
}