/* =============================================================
   LUMEN CAREERS — PUBLIC SITE STYLES
   Editorial-meets-tech · Generous whitespace · Sharp coral accent
   ============================================================= */

:root {
  /* Color */
  --bg: #FAFAF7;
  --bg-elev: #FFFFFF;
  --bg-soft: #F2F0EA;
  --ink: #0A0A0A;
  --ink-2: #2A2A28;
  --muted: #6B6B66;
  --rule: #E8E6E1;
  --rule-soft: #F0EEE8;
  --accent: #FF4D2E;
  --accent-soft: #FFE9E2;
  --success: #16794D;

  /* Type */
  --display: 'Instrument Serif', 'Times New Roman', Georgia, serif;
  --sans: 'DM Sans', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;

  /* Layout */
  --container: 1280px;
  --gutter: clamp(1.25rem, 4vw, 3rem);

  /* Motion */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a { color: inherit; text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--accent); }

button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

h1, h2, h3, h4 { font-family: var(--display); font-weight: 400; letter-spacing: -0.01em; line-height: 1.05; color: var(--ink); }
h1 { font-size: clamp(2.5rem, 7vw, 6rem); }
h2 { font-size: clamp(2rem, 4.5vw, 3.5rem); }
h3 { font-size: clamp(1.5rem, 2.5vw, 2.25rem); }
h4 { font-size: 1.35rem; }

em { font-style: italic; color: var(--accent); }

p { color: var(--ink-2); }

/* ─────────────────────────────────────────────
   LAYOUT PRIMITIVES
   ───────────────────────────────────────────── */
.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }

.section { padding: clamp(4rem, 9vw, 8rem) 0; }
.section-tight { padding: clamp(2.5rem, 6vw, 5rem) 0; }

.eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.eyebrow::before {
  content: ''; display: inline-block; width: 8px; height: 8px;
  background: var(--accent); border-radius: 50%;
}

.divider { height: 1px; background: var(--rule); }

/* ─────────────────────────────────────────────
   BUTTONS
   ───────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  font-family: var(--sans); font-weight: 500; font-size: 0.95rem;
  border: 1px solid transparent;
  border-radius: 999px;
  transition: all .25s var(--ease);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: var(--accent); color: #fff; transform: translateY(-1px); }
.btn-outline { border-color: var(--ink); color: var(--ink); }
.btn-outline:hover { background: var(--ink); color: #fff; }
.btn-ghost { color: var(--ink); }
.btn-ghost:hover { background: var(--bg-soft); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: #E63E1F; transform: translateY(-1px); }
.btn-sm { padding: 0.5rem 1rem; font-size: 0.85rem; }

.btn .arrow {
  display: inline-block; transition: transform .3s var(--ease);
}
.btn:hover .arrow { transform: translateX(4px); }

/* ─────────────────────────────────────────────
   NAVIGATION
   ───────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250, 250, 247, 0.85);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--rule);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 100px;
}
.nav-brand {
  font-family: var(--display); font-size: 1.5rem; font-weight: 400;
  letter-spacing: -0.01em;
  display: flex; align-items: center; gap: 0.5rem;
}
.nav-brand .dot { color: var(--accent); }
.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a { font-size: 0.95rem; color: var(--ink-2); position: relative; }
.nav-links a::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -6px;
  height: 1px; background: var(--accent); transform: scaleX(0);
  transform-origin: left; transition: transform .3s var(--ease);
}
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }
.nav-cta { display: flex; gap: 0.5rem; align-items: center; }
.nav-toggle { display: none; width: 32px; height: 32px; align-items: center; justify-content: center; }
.nav-toggle span { width: 22px; height: 1.5px; background: var(--ink); transition: all .3s; position: relative; }
.nav-toggle span::before, .nav-toggle span::after {
  content: ''; position: absolute; left: 0; width: 22px; height: 1.5px; background: var(--ink); transition: all .3s;
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

@media (max-width: 880px) {
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .mobile-menu.open ~ .nav .nav-toggle span { background: transparent; }
  .mobile-menu.open ~ .nav .nav-toggle span::before { transform: rotate(45deg); top: 0; }
  .mobile-menu.open ~ .nav .nav-toggle span::after { transform: rotate(-45deg); top: 0; }
}

/* Mobile menu */
.mobile-menu {
  position: fixed; inset: 0; z-index: 100;
  background: var(--bg);
  padding: 5rem var(--gutter) 2rem;
  transform: translateX(100%);
  transition: transform .4s var(--ease);
  display: flex; flex-direction: column;
}
.mobile-menu.open { transform: translateX(0); }
.mobile-menu .close-btn {
  position: absolute; top: 1.5rem; right: var(--gutter);
  width: 32px; height: 32px; display: flex; align-items: center; justify-content: center;
}
.mobile-menu nav { display: flex; flex-direction: column; gap: 1.5rem; margin-top: 2rem; }
.mobile-menu nav a { font-family: var(--display); font-size: 2rem; }
.mobile-menu .mobile-cta { margin-top: auto; display: flex; flex-direction: column; gap: 0.75rem; }

/* ─────────────────────────────────────────────
   HERO
   ───────────────────────────────────────────── */
.hero {
  position: relative;
  padding: clamp(3rem, 8vw, 7rem) 0 clamp(4rem, 9vw, 9rem);
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: end;
}
@media (max-width: 880px) { .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; } }

.hero h1 {
  font-size: clamp(2.75rem, 8.5vw, 7.5rem);
  letter-spacing: -0.025em;
  line-height: 0.95;
}
.hero h1 .line { display: block; overflow: hidden; }
.hero h1 .line span { display: inline-block; will-change: transform; }
.hero-sub {
  font-size: clamp(1rem, 1.25vw, 1.15rem);
  color: var(--muted);
  max-width: 32ch;
  margin-bottom: 2rem;
}
.hero-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; }

.hero-stats {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem 2rem;
  padding-top: 2rem; border-top: 1px solid var(--rule);
  margin-top: 3rem;
}
.stat-num { font-family: var(--display); font-size: clamp(2.5rem, 4vw, 3.5rem); display: block; line-height: 1; }
.stat-label { color: var(--muted); font-size: 0.85rem; margin-top: 0.5rem; }

/* Floating decoration */
.hero::before {
  content: ''; position: absolute; top: 5%; right: -10%;
  width: 50vw; height: 50vw; max-width: 800px; max-height: 800px;
  background: radial-gradient(circle at 30% 30%, rgba(255, 77, 46, 0.18), transparent 60%);
  filter: blur(80px); pointer-events: none; z-index: 0;
  animation: float 20s ease-in-out infinite alternate;
}
@keyframes float {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-50px, -30px) scale(1.1); }
}
.hero > .container { position: relative; z-index: 1; }

/* ─────────────────────────────────────────────
   MARQUEE
   ───────────────────────────────────────────── */
.marquee {
  border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
  padding: 1.5rem 0; overflow: hidden; background: var(--bg);
}
.marquee-track {
  display: flex; gap: 4rem; white-space: nowrap;
  animation: marquee 35s linear infinite;
  font-family: var(--display); font-size: 1.5rem; color: var(--muted);
}
.marquee-track span { display: inline-flex; align-items: center; gap: 4rem; }
.marquee-track span::after {
  content: '✦'; color: var(--accent); font-size: 0.9rem;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ─────────────────────────────────────────────
   JOB CARDS
   ───────────────────────────────────────────── */
.section-head {
  display: flex; justify-content: space-between; align-items: end;
  margin-bottom: clamp(2rem, 5vw, 4rem);
  gap: 2rem; flex-wrap: wrap;
}
.section-head h2 { max-width: 18ch; }

.jobs-grid { display: grid; grid-template-columns: 1fr; gap: 0; border-top: 1px solid var(--rule); }

.job-card {
  display: grid;
  grid-template-columns: auto 1fr auto auto auto;
  align-items: center; gap: 2rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--rule);
  transition: padding .3s var(--ease), background .3s var(--ease);
  position: relative;
}
.job-card:hover { padding-left: 1rem; padding-right: 1rem; background: var(--bg-elev); }
.job-card::before {
  content: ''; position: absolute; left: 0; top: 50%;
  width: 0; height: 1px; background: var(--accent);
  transition: width .4s var(--ease);
}
.job-card:hover::before { width: 24px; }

.job-num { font-family: var(--mono); font-size: 0.75rem; color: var(--muted); width: 32px; }
.job-title { font-family: var(--display); font-size: clamp(1.25rem, 2vw, 1.75rem); }
.job-meta { font-family: var(--mono); font-size: 0.75rem; color: var(--muted); display: flex; gap: 1rem; flex-wrap: wrap; }
.job-meta span { display: inline-flex; align-items: center; gap: 0.35rem; }
.job-pill {
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.1em;
  padding: 0.25rem 0.65rem; border: 1px solid var(--rule); border-radius: 999px;
  text-transform: uppercase; color: var(--ink-2);
}
.job-pill.featured { background: var(--accent); color: #fff; border-color: var(--accent); }
.job-arrow {
  width: 40px; height: 40px; border: 1px solid var(--rule); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  transition: all .3s var(--ease);
}
.job-card:hover .job-arrow { background: var(--ink); color: #fff; border-color: var(--ink); transform: rotate(-45deg); }

@media (max-width: 720px) {
  .job-card { grid-template-columns: 1fr auto; gap: 1rem; }
  .job-num, .job-meta, .job-pill { display: none; }
}

/* ─────────────────────────────────────────────
   CATEGORIES
   ───────────────────────────────────────────── */
.cats-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1px; background: var(--rule);
  border: 1px solid var(--rule);
}
.cat-card {
  background: var(--bg-elev);
  padding: 2rem;
  display: flex; flex-direction: column; gap: 0.5rem;
  transition: all .3s var(--ease);
  position: relative;
  min-height: 200px; justify-content: space-between;
}
.cat-card:hover { background: var(--ink); color: #fff; }
.cat-card:hover .cat-count { color: var(--accent); }
.cat-card:hover .cat-arrow { transform: translate(4px, -4px); }
.cat-name { font-family: var(--display); font-size: 1.75rem; line-height: 1.1; }
.cat-count { font-family: var(--mono); font-size: 0.75rem; color: var(--muted); transition: color .3s var(--ease); }
.cat-arrow { font-family: var(--mono); align-self: flex-end; transition: transform .3s var(--ease); }

/* ─────────────────────────────────────────────
   FILTERS (jobs page)
   ───────────────────────────────────────────── */
.filters {
  display: grid; grid-template-columns: 1fr 1fr 1fr auto;
  gap: 1rem;
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  padding: 1.25rem;
  border-radius: 16px;
  margin-bottom: 3rem;
}
@media (max-width: 720px) { .filters { grid-template-columns: 1fr 1fr; } }

.filter-group { display: flex; flex-direction: column; gap: 0.35rem; }
.filter-group label { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.filter-group select, .filter-group input {
  padding: 0.65rem 0.875rem; border: 1px solid var(--rule); border-radius: 10px;
  background: var(--bg); font: inherit; font-size: 0.9rem; color: var(--ink);
}
.filter-group select:focus, .filter-group input:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: var(--accent); }

/* ─────────────────────────────────────────────
   JOB DETAIL
   ───────────────────────────────────────────── */
.job-detail-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
@media (max-width: 880px) { .job-detail-grid { grid-template-columns: 1fr; } }

.job-meta-row {
  display: flex; gap: 0.75rem; flex-wrap: wrap; margin-bottom: 2rem;
}

.prose h3 { margin: 2.5rem 0 1rem; font-family: var(--display); font-size: 1.5rem; }
.prose p, .prose li { color: var(--ink-2); margin-bottom: 0.75rem; line-height: 1.65; }
.prose ul { padding-left: 1.25rem; }

.job-aside {
  background: var(--bg-elev); border: 1px solid var(--rule);
  border-radius: 16px; padding: 2rem;
  position: sticky; top: 100px;
}
.job-aside h4 { font-family: var(--display); margin-bottom: 1rem; }
.job-aside .meta-list { display: flex; flex-direction: column; gap: 1rem; margin-bottom: 1.5rem; }
.meta-list .item { display: flex; flex-direction: column; gap: 0.25rem; }
.meta-list .item .label { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.meta-list .item .value { font-size: 1rem; }

/* ─────────────────────────────────────────────
   FORMS
   ───────────────────────────────────────────── */
.form { display: flex; flex-direction: column; gap: 1.25rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 720px) { .form-row { grid-template-columns: 1fr; } }
.form-field { display: flex; flex-direction: column; gap: 0.4rem; }
.form-field label { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.form-field input, .form-field textarea, .form-field select {
  padding: 0.875rem 1rem; border: 1px solid var(--rule); border-radius: 10px;
  background: var(--bg-elev); font: inherit; font-size: 0.95rem; color: var(--ink);
  transition: border-color .2s var(--ease);
}
.form-field input:focus, .form-field textarea:focus, .form-field select:focus {
  outline: none; border-color: var(--ink);
}
.form-field textarea { min-height: 140px; resize: vertical; font-family: inherit; }

.file-field {
  position: relative; padding: 1.5rem; border: 1.5px dashed var(--rule); border-radius: 12px;
  text-align: center; cursor: pointer; transition: border-color .2s, background .2s;
}
.file-field:hover { border-color: var(--ink); background: var(--bg-soft); }
.file-field input[type=file] { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.file-field .file-name { font-family: var(--mono); font-size: 0.85rem; color: var(--ink-2); margin-top: 0.5rem; }

/* ─────────────────────────────────────────────
   ABOUT / CONTACT / PAGE HEADERS
   ───────────────────────────────────────────── */
.page-head {
  padding: clamp(3rem, 6vw, 6rem) 0 clamp(2rem, 4vw, 4rem);
  border-bottom: 1px solid var(--rule);
}
.page-head h1 { max-width: 18ch; margin-bottom: 1rem; }
.page-head p { max-width: 50ch; color: var(--muted); font-size: 1.1rem; }

.split-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}
@media (max-width: 880px) { .split-grid { grid-template-columns: 1fr; } }

/* Values list (about page) */
.values-list { display: flex; flex-direction: column; }
.values-list .value {
  padding: 2.5rem 0; border-top: 1px solid var(--rule);
  display: grid; grid-template-columns: 80px 1fr; gap: 2rem;
}
.values-list .value:last-child { border-bottom: 1px solid var(--rule); }
.values-list .num { font-family: var(--display); font-size: 2.5rem; color: var(--accent); }
.values-list h3 { margin-bottom: 0.5rem; font-size: 1.5rem; }
.values-list p { color: var(--muted); }

/* ─────────────────────────────────────────────
   CTA BANNER
   ───────────────────────────────────────────── */
.cta-banner {
  background: var(--ink); color: #fff;
  padding: clamp(4rem, 8vw, 7rem) 0;
  margin-top: clamp(4rem, 8vw, 6rem);
  position: relative; overflow: hidden;
}
.cta-banner::before {
  content: ''; position: absolute; top: -30%; right: -10%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(255, 77, 46, 0.4), transparent 60%);
  filter: blur(100px);
}
.cta-banner > .container { position: relative; }
.cta-banner h2 { color: #fff; max-width: 14ch; }
.cta-banner p { color: rgba(255, 255, 255, 0.7); max-width: 40ch; margin: 1rem 0 2rem; }
.cta-banner .btn-outline { border-color: #fff; color: #fff; }
.cta-banner .btn-outline:hover { background: #fff; color: var(--ink); }

/* ─────────────────────────────────────────────
   FOOTER
   ───────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--rule);
  padding: 4rem 0 2rem;
}
.footer-grid {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr 1fr;
  gap: 2.5rem; margin-bottom: 4rem;
}
@media (max-width: 960px) { .footer-grid { grid-template-columns: 1fr 1fr 1fr; } }
@media (max-width: 720px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; } }
.footer-brand { font-family: var(--display); font-size: 2rem; line-height: 1; margin-bottom: 1rem; }
.footer-tag { color: var(--muted); max-width: 28ch; }
.footer h5 { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--muted); margin-bottom: 1rem; }
.footer ul { list-style: none; display: flex; flex-direction: column; gap: 0.6rem; }
.footer ul a { font-size: 0.95rem; color: var(--ink-2); }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 2rem; border-top: 1px solid var(--rule);
  font-size: 0.85rem; color: var(--muted); flex-wrap: wrap; gap: 1rem;
}

/* ─────────────────────────────────────────────
   FLASH MESSAGES
   ───────────────────────────────────────────── */
.flash-stack { position: fixed; top: 90px; right: 1.5rem; z-index: 80; display: flex; flex-direction: column; gap: 0.5rem; max-width: 360px; }
.flash {
  padding: 0.875rem 1.25rem; border-radius: 10px;
  background: var(--ink-2); color: #fff; font-size: 0.9rem;
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  animation: slideIn .4s var(--ease-out), fadeOut .4s var(--ease) 5s forwards;
}
.flash.success { background: var(--success); }
.flash.error   { background: var(--accent); }
@keyframes slideIn { from { transform: translateX(120%); } to { transform: translateX(0); } }
@keyframes fadeOut { to { opacity: 0; transform: translateX(20px); } }

/* ─────────────────────────────────────────────
   SCROLL ANIMATIONS
   ───────────────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s var(--ease-out), transform .8s var(--ease-out); }
.reveal.in-view { opacity: 1; transform: translateY(0); }
.reveal.delay-1 { transition-delay: 0.08s; }
.reveal.delay-2 { transition-delay: 0.16s; }
.reveal.delay-3 { transition-delay: 0.24s; }
.reveal.delay-4 { transition-delay: 0.32s; }

/* Hero text staggered reveal */
.hero h1 .line span {
  transform: translateY(110%); opacity: 0;
  transition: transform 1s var(--ease-out), opacity 1s var(--ease-out);
}
.hero.loaded h1 .line:nth-child(1) span { transform: translateY(0); opacity: 1; transition-delay: 0.1s; }
.hero.loaded h1 .line:nth-child(2) span { transform: translateY(0); opacity: 1; transition-delay: 0.25s; }
.hero.loaded h1 .line:nth-child(3) span { transform: translateY(0); opacity: 1; transition-delay: 0.4s; }
.hero .hero-sub, .hero .hero-actions, .hero .hero-stats {
  opacity: 0; transform: translateY(20px);
  transition: opacity 1s var(--ease-out), transform 1s var(--ease-out);
}
.hero.loaded .hero-sub { opacity: 1; transform: translateY(0); transition-delay: 0.55s; }
.hero.loaded .hero-actions { opacity: 1; transform: translateY(0); transition-delay: 0.65s; }
.hero.loaded .hero-stats { opacity: 1; transform: translateY(0); transition-delay: 0.75s; }

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .marquee-track { animation: none; }
  .hero::before { animation: none; }
}

/* Empty state */
.empty {
  text-align: center; padding: 5rem 2rem; border: 1px dashed var(--rule); border-radius: 16px;
  color: var(--muted);
}
.empty .display { font-family: var(--display); font-size: 2rem; color: var(--ink); margin-bottom: 0.5rem; }

/* Pagination */
.pagination { display: flex; gap: 0.25rem; justify-content: center; margin-top: 3rem; }
.pagination a, .pagination span {
  padding: 0.5rem 0.85rem; border: 1px solid var(--rule); border-radius: 8px;
  font-family: var(--mono); font-size: 0.85rem;
}
.pagination a:hover { background: var(--ink); color: #fff; border-color: var(--ink); }
.pagination .active { background: var(--ink); color: #fff; border-color: var(--ink); }