/* ==========================================================================
   SimFluids — Reza Haghani · Computational Physics
   Elegant academic portfolio stylesheet
   ========================================================================== */

:root {
  --ink: #0c1b2e;
  --ink-soft: #33455c;
  --muted: #64748b;
  --paper: #fbfaf7;
  --card: #ffffff;
  --line: #e5e3dc;
  --navy: #0a1729;
  --navy-2: #12263f;
  --accent: #1f6fb2;
  --accent-deep: #14507f;
  --gold: #c99a3c;
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "Inter", -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "IBM Plex Mono", Consolas, monospace;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(12, 27, 46, 0.08);
  --shadow-lg: 0 24px 60px rgba(12, 27, 46, 0.14);
}

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

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--accent); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--accent-deep); }

.wrap { max-width: 1140px; margin: 0 auto; padding: 0 28px; }

/* ---------- Typography helpers ---------- */

.eyebrow {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}
.eyebrow::before {
  content: "";
  width: 42px;
  height: 1px;
  background: var(--accent);
  opacity: 0.6;
}

.section-title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: 18px;
}

.section-lead {
  max-width: 720px;
  color: var(--ink-soft);
  font-size: 17.5px;
  margin-bottom: 8px;
}

section { padding: 96px 0; }

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

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10, 23, 41, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: background 0.3s ease;
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.01em;
}
.brand:hover { color: #fff; }
.brand-mark { width: 40px; height: 40px; flex-shrink: 0; }
.brand .dot { color: var(--gold); }
.brand small {
  display: block;
  font-family: var(--mono);
  font-size: 9.5px;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  margin-top: -2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
}
.nav-links a {
  color: rgba(255, 255, 255, 0.75);
  font-size: 14.5px;
  font-weight: 500;
  letter-spacing: 0.02em;
}
.nav-links a:hover, .nav-links a.active { color: #fff; }

.btn-cv {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  padding: 9px 18px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 999px;
  color: #fff !important;
  transition: background 0.2s ease, border-color 0.2s ease;
}
.btn-cv:hover { background: rgba(255, 255, 255, 0.12); border-color: #fff; }

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  color: #fff;
  font-size: 26px;
  cursor: pointer;
  line-height: 1;
}

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

.hero {
  position: relative;
  background:
    radial-gradient(1100px 500px at 85% -10%, rgba(31, 111, 178, 0.35), transparent 60%),
    radial-gradient(800px 420px at -5% 110%, rgba(201, 154, 60, 0.14), transparent 55%),
    linear-gradient(160deg, var(--navy) 0%, var(--navy-2) 100%);
  color: #fff;
  padding: 190px 0 120px;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='900' height='600' viewBox='0 0 900 600'%3E%3Cg fill='none' stroke='%23ffffff' stroke-opacity='0.05' stroke-width='1.4'%3E%3Cpath d='M-50 120 C 150 60, 350 180, 550 120 S 900 80, 1000 130'/%3E%3Cpath d='M-50 190 C 160 130, 340 250, 560 190 S 890 150, 1000 200'/%3E%3Cpath d='M-50 260 C 170 200, 330 320, 570 260 S 880 220, 1000 270'/%3E%3Cpath d='M-50 330 C 180 270, 320 390, 580 330 S 870 290, 1000 340'/%3E%3Cpath d='M-50 400 C 190 340, 310 460, 590 400 S 860 360, 1000 410'/%3E%3Cpath d='M-50 470 C 200 410, 300 530, 600 470 S 850 430, 1000 480'/%3E%3C/g%3E%3C/svg%3E");
  background-size: cover;
  pointer-events: none;
}

.hero-inner { position: relative; z-index: 1; max-width: 860px; }

.hero .eyebrow { color: var(--gold); }
.hero .eyebrow::before { background: var(--gold); }

.hero h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(44px, 6.5vw, 74px);
  line-height: 1.06;
  letter-spacing: -0.015em;
  margin-bottom: 26px;
}
.hero h1 em {
  font-style: italic;
  color: #9cc4e8;
}

.hero-sub {
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.78);
  max-width: 700px;
  margin-bottom: 40px;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 64px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.01em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 24px rgba(31, 111, 178, 0.4);
}
.btn-primary:hover { background: var(--accent-deep); color: #fff; transform: translateY(-2px); }
.btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #fff;
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.1); color: #fff; transform: translateY(-2px); }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 760px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  padding-top: 34px;
}
.stat-num {
  font-family: var(--serif);
  font-size: 38px;
  font-weight: 500;
  color: #fff;
  line-height: 1.1;
}
.stat-num span { color: var(--gold); }
.stat-label {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  margin-top: 6px;
}

/* ---------- About ---------- */

.about-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 64px;
  align-items: start;
}

.about-text p { margin-bottom: 18px; color: var(--ink-soft); }
.about-text strong { color: var(--ink); }

.info-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 30px;
}
.info-card h3 {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 18px;
}
.info-card ul { list-style: none; }
.info-card li {
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 15px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
.info-card li:last-child { border-bottom: 0; }
.info-card li b { font-weight: 600; }
.info-card li span { color: var(--muted); text-align: right; }

.skills-group { margin-top: 22px; }
.skills-group:first-of-type { margin-top: 0; }
.skills-group-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-deep);
  margin-bottom: 6px;
}
.skills-list { list-style: none; }
.skills-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--line);
}
.skills-list li:last-child { border-bottom: 0; }
.skills-list .skill-name { font-size: 14.5px; color: var(--ink); text-align: left; }
.skill-stars {
  position: relative;
  display: inline-block;
  font-size: 13px;
  letter-spacing: 2px;
  line-height: 1;
  white-space: nowrap;
}
.skill-stars .skill-stars-track { color: var(--line); }
.skill-stars .skill-stars-fill {
  position: absolute;
  top: 0;
  left: 0;
  overflow: hidden;
  color: var(--gold);
}

/* ---------- Research areas ---------- */

.section-alt { background: #f3f1ea; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.research-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
  margin-top: 48px;
}

.research-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 32px;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  position: relative;
  overflow: hidden;
}
.research-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.research-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--gold));
  opacity: 0;
  transition: opacity 0.25s ease;
}
.research-card:hover::before { opacity: 1; }

.research-num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--gold);
  letter-spacing: 0.15em;
  margin-bottom: 14px;
}
.research-card h3 {
  font-family: var(--serif);
  font-size: 22.5px;
  font-weight: 600;
  margin-bottom: 12px;
  line-height: 1.3;
}
.research-card p { color: var(--ink-soft); font-size: 15.5px; }

/* ---------- Reel ---------- */

.reel-wrap {
  position: relative;
  width: 100%;
  margin: 40px auto 0;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--line);
  background: var(--navy);
}
.reel-wrap video {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}
.reel-sound-toggle {
  position: absolute;
  right: 18px;
  bottom: 18px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 50%;
  background: rgba(10, 23, 41, 0.55);
  backdrop-filter: blur(4px);
  color: #fff;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}
.reel-sound-toggle:hover { background: rgba(10, 23, 41, 0.78); transform: scale(1.05); }
.reel-sound-toggle svg { width: 20px; height: 20px; }
.reel-sound-toggle .icon-unmuted { display: none; }
.reel-sound-toggle.is-unmuted .icon-muted { display: none; }
.reel-sound-toggle.is-unmuted .icon-unmuted { display: block; }

/* ---------- Projects ---------- */

.project {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 56px;
  align-items: center;
  margin-top: 64px;
}
.project.flip .project-media { order: 2; }

.project-media {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--line);
  background: #fff;
}
.project-media img { width: 100%; height: auto; }

.media-caption {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--muted);
  letter-spacing: 0.06em;
  padding: 12px 18px;
  border-top: 1px solid var(--line);
  background: #fcfcfa;
}

.project-media.synthetic {
  aspect-ratio: 16 / 11;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(420px 260px at 50% 115%, rgba(31, 111, 178, 0.5), transparent 70%),
    radial-gradient(300px 200px at 15% -10%, rgba(201, 154, 60, 0.25), transparent 60%),
    linear-gradient(160deg, var(--navy) 0%, var(--navy-2) 100%);
  position: relative;
}

.project-kicker {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
}
.project h3 {
  font-family: var(--serif);
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 600;
  line-height: 1.25;
  margin-bottom: 18px;
}
.project p { color: var(--ink-soft); margin-bottom: 16px; font-size: 16px; }

.project-facts { list-style: none; margin: 22px 0 26px; }
.project-facts li {
  position: relative;
  padding: 8px 0 8px 30px;
  font-size: 15px;
  color: var(--ink-soft);
  border-bottom: 1px dashed var(--line);
}
.project-facts li:last-child { border-bottom: 0; }
.project-facts li::before {
  content: "→";
  position: absolute;
  left: 2px;
  color: var(--gold);
  font-weight: 600;
}
.project-facts b { color: var(--ink); font-weight: 600; }

/* ---------- Project image carousel ---------- */

.project-carousel { position: relative; }

.carousel-track {
  position: relative;
  aspect-ratio: 4 / 3;
  background: #fff;
}
.carousel-slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease;
}
.carousel-slide.is-active { opacity: 1; visibility: visible; }
.carousel-slide img { width: 100%; height: 100%; object-fit: contain; }

.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(10, 23, 41, 0.55);
  color: #fff;
  font-size: 19px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 2;
  transition: background 0.2s ease;
}
.carousel-arrow:hover { background: rgba(10, 23, 41, 0.82); }
.carousel-arrow:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.carousel-prev { left: 14px; }
.carousel-next { right: 14px; }

.project-carousel .media-caption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}
.carousel-dots { display: flex; gap: 6px; flex-shrink: 0; }
.carousel-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--line);
  transition: background 0.2s ease, transform 0.2s ease;
}
.carousel-dot.is-active { background: var(--gold); transform: scale(1.35); }

/* ---------- Publications ---------- */

.pub-year-group { margin-top: 42px; }
.pub-year {
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 600;
  color: var(--gold);
  border-bottom: 2px solid var(--line);
  padding-bottom: 10px;
  margin-bottom: 6px;
}

.pub-item {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 20px;
  padding: 22px 14px;
  border-bottom: 1px solid var(--line);
  border-radius: 10px;
  transition: background 0.2s ease;
}
.pub-item:hover { background: #f3f6fa; }

.pub-index {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
  padding-top: 4px;
}

.pub-title {
  font-family: var(--serif);
  font-size: 18.5px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 6px;
}
.pub-meta { font-size: 14.5px; color: var(--muted); }
.pub-meta .journal { font-style: italic; color: var(--accent-deep); }
.pub-authors { font-size: 14.5px; color: var(--ink-soft); margin-bottom: 4px; }
.pub-authors b { color: var(--ink); }

.badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: #fdf3df;
  color: #8a6117;
  border: 1px solid #ecd9ad;
  padding: 3px 10px;
  border-radius: 999px;
  margin-left: 10px;
  vertical-align: 2px;
}

.pub-extra {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
  margin-top: 56px;
}
.pub-extra .info-card li { display: block; }
.pub-extra .info-card li i { color: var(--muted); font-style: normal; font-size: 13.5px; display: block; }

/* ---------- Awards ---------- */

.awards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  margin-top: 48px;
}
.award-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 28px;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.award-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.award-icon {
  width: 46px; height: 46px;
  border-radius: 12px;
  background: linear-gradient(135deg, #fdf3df, #f6e3ba);
  border: 1px solid #ecd9ad;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 21px;
  margin-bottom: 18px;
}
.award-card h4 { font-size: 16.5px; font-weight: 650; margin-bottom: 8px; line-height: 1.4; }
.award-card p { font-size: 14.5px; color: var(--muted); }

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

.contact {
  background:
    radial-gradient(900px 400px at 90% 0%, rgba(31, 111, 178, 0.3), transparent 60%),
    linear-gradient(160deg, var(--navy) 0%, var(--navy-2) 100%);
  color: #fff;
}
.contact .eyebrow { color: var(--gold); }
.contact .eyebrow::before { background: var(--gold); }
.contact .section-lead { color: rgba(255, 255, 255, 0.72); }

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 64px;
  align-items: start;
  margin-top: 24px;
}

.contact-list { list-style: none; margin-top: 26px; }
.contact-list li {
  display: flex;
  gap: 16px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 16.5px;
}
.contact-list .k {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  min-width: 92px;
}
.contact-list a { color: #9cc4e8; }
.contact-list a:hover { color: #fff; }

.profile-links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.profile-links a {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  padding: 10px 20px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 999px;
  color: #fff;
  transition: background 0.2s ease;
}
.profile-links a:hover { background: rgba(255, 255, 255, 0.12); }

/* ---------- Footer ---------- */

.site-footer {
  background: var(--navy);
  color: rgba(255, 255, 255, 0.5);
  padding: 30px 0;
  font-size: 13.5px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.site-footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
.site-footer a { color: rgba(255, 255, 255, 0.75); }

/* ---------- Reveal animation ---------- */

.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: none; }

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

/* ---------- Responsive ---------- */

@media (max-width: 960px) {
  .about-grid, .contact-grid, .project { grid-template-columns: 1fr; gap: 44px; }
  .project.flip .project-media { order: 0; }
  .research-grid { grid-template-columns: 1fr; }
  .awards-grid { grid-template-columns: 1fr 1fr; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .pub-extra { grid-template-columns: 1fr; }
}

/* ---------- Collaboration page ---------- */

.status-container { display: flex; flex-wrap: wrap; gap: 14px; margin: 8px 0 36px; }
.status-badge {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  padding: 8px 16px 8px 14px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 9px;
}
.status-badge::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: currentColor; flex-shrink: 0; }
.status-badge.available { background: rgba(80, 200, 140, 0.14); color: #7fe0ac; border: 1px solid rgba(80, 200, 140, 0.3); }
.status-badge.roles { background: rgba(156, 196, 232, 0.14); color: #9cc4e8; border: 1px solid rgba(156, 196, 232, 0.3); }

.hr-note {
  background: #eef3f8;
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 26px 30px;
  margin: 48px 0;
}
.hr-note h3 { font-family: var(--serif); font-size: 19px; font-weight: 600; margin-bottom: 10px; }
.hr-note p { color: var(--ink-soft); font-size: 15.5px; margin: 0; }

.form-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 44px;
  margin-top: 8px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.form-group { margin-bottom: 22px; }
.form-group label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 8px; color: var(--ink); }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-family: var(--sans);
  font-size: 15px;
  color: var(--ink);
  background: var(--paper);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(31, 111, 178, 0.15);
}
.form-group textarea { resize: vertical; min-height: 140px; }
.form-note { font-size: 13px; color: var(--muted); margin-top: 4px; }

.btn-submit {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 14px 32px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  font-family: var(--sans);
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}
.btn-submit:hover { background: var(--accent-deep); transform: translateY(-2px); }

@media (max-width: 720px) {
  section { padding: 68px 0; }
  .hero { padding: 150px 0 90px; }
  .awards-grid { grid-template-columns: 1fr; }
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute;
    top: 68px; left: 0; right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--navy);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: none;
    padding: 10px 28px 22px;
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: 12px 0; font-size: 16px; }
  .btn-cv { margin-top: 10px; display: inline-block; }
  .pub-item { grid-template-columns: 1fr; gap: 4px; }
  .pub-index { display: none; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .form-card { padding: 28px 22px; }
}