/* ===========================================================
   US Job Board — Main Stylesheet
   Mobile-first, professional recruitment marketplace styling
   =========================================================== */

:root{
  --brand: #0b5fff;
  --brand-dark: #063fb0;
  --accent: #00b894;
  --ink: #16222e;
  --muted: #5c6b7a;
  --border: #e2e8ef;
  --bg: #f6f8fa;
  --card: #ffffff;
  --radius: 10px;
  --shadow: 0 2px 10px rgba(16,24,40,.06);
  --shadow-lg: 0 8px 30px rgba(16,24,40,.12);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.55;
  font-size:16px;
}
a{color:var(--brand);text-decoration:none;}
a:hover{text-decoration:underline;}
img{max-width:100%;height:auto;display:block;}
h1,h2,h3,h4{line-height:1.25;margin:0 0 .5em;font-weight:700;}
.container{max-width:1180px;margin:0 auto;padding:0 20px;}
.btn{
  display:inline-block;background:var(--brand);color:#fff;padding:12px 22px;
  border-radius:8px;font-weight:600;border:none;cursor:pointer;font-size:15px;
  transition:background .15s ease;
}
.btn:hover{background:var(--brand-dark);color:#fff;text-decoration:none;}
.btn.secondary{background:transparent;color:var(--brand);border:1.5px solid var(--brand);}
.btn.secondary:hover{background:var(--brand);color:#fff;}
.btn.accent{background:var(--accent);}
.btn.block{width:100%;text-align:center;}

/* ---------- Header ---------- */
.site-header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;}
.site-header .inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0;}
.site-logo{font-size:22px;font-weight:800;color:var(--ink);letter-spacing:-.5px;}
.site-logo span{color:var(--brand);}
.main-nav ul{list-style:none;display:flex;gap:26px;margin:0;padding:0;}
.main-nav a{color:var(--ink);font-weight:500;font-size:15px;}
.main-nav a:hover{color:var(--brand);text-decoration:none;}
.nav-toggle{display:none;background:none;border:none;font-size:26px;cursor:pointer;}

@media (max-width:860px){
  .nav-toggle{display:block;}
  .main-nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--border);box-shadow:var(--shadow-lg);}
  .main-nav.open{display:block;}
  .main-nav ul{flex-direction:column;gap:0;padding:10px 20px;}
  .main-nav li{border-bottom:1px solid var(--border);}
  .main-nav a{display:block;padding:14px 0;}
}

/* ---------- Hero / Search ---------- */
.hero{background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);color:#fff;padding:56px 0 70px;}
.hero h1{font-size:34px;margin-bottom:10px;}
.hero p.lead{font-size:17px;opacity:.92;max-width:600px;margin-bottom:28px;}
.search-card{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:18px;margin-top:-40px;position:relative;z-index:5;}
.search-form{display:grid;grid-template-columns:2fr 1.3fr 1.3fr auto;gap:10px;}
@media (max-width:760px){.search-form{grid-template-columns:1fr;}}
.search-form input[type=text],
.search-form select{
  width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:8px;font-size:15px;background:#fff;
}
.hero-categories{display:flex;gap:12px;margin-top:24px;flex-wrap:wrap;}
.hero-categories a{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);color:#fff;padding:8px 16px;border-radius:24px;font-size:14px;}
.hero-categories a:hover{background:rgba(255,255,255,.28);text-decoration:none;}

/* ---------- Sections ---------- */
.section{padding:56px 0;}
.section-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:26px;flex-wrap:wrap;gap:10px;}
.section-head h2{font-size:26px;}
.section-head a.view-all{font-weight:600;font-size:14px;}

/* ---------- Job Cards / Grid ---------- */
.jobs-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
@media (max-width:960px){.jobs-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:640px){.jobs-grid{grid-template-columns:1fr;}}

.job-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;transition:box-shadow .15s ease, transform .15s ease;display:flex;flex-direction:column;gap:8px;}
.job-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px);}
.job-card .company{font-size:13px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.03em;}
.job-card h3{font-size:18px;margin:0;}
.job-card h3 a{color:var(--ink);}
.job-card h3 a:hover{color:var(--brand);text-decoration:none;}
.job-meta-row{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--muted);}
.job-meta-row .pill{background:#eef3fb;color:var(--brand-dark);padding:3px 10px;border-radius:20px;font-weight:600;}
.job-card p.excerpt{color:var(--muted);font-size:14px;margin:4px 0 0;}
.job-card .card-footer{margin-top:auto;padding-top:10px;display:flex;justify-content:space-between;align-items:center;}
.job-card .posted-date{font-size:12px;color:#8894a0;}

/* ---------- Category cards on homepage ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
@media (max-width:760px){.cat-grid{grid-template-columns:repeat(2,1fr);}}
.cat-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px;text-align:center;}
.cat-card:hover{box-shadow:var(--shadow);}
.cat-card .icon{font-size:32px;margin-bottom:10px;}
.cat-card h3{font-size:17px;margin-bottom:4px;}
.cat-card span{color:var(--muted);font-size:13px;}

/* ---------- Archive / Filter layout ---------- */
.archive-layout{display:grid;grid-template-columns:270px 1fr;gap:28px;align-items:start;}
@media (max-width:900px){.archive-layout{grid-template-columns:1fr;}}
.filters-panel{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px;position:sticky;top:80px;}
.filters-panel h4{font-size:14px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin-bottom:10px;}
.filters-panel .filter-group{margin-bottom:22px;}
.filters-panel select,.filters-panel input[type=text]{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;margin-bottom:8px;}
.results-count{color:var(--muted);font-size:14px;margin-bottom:16px;}
.job-list{display:flex;flex-direction:column;gap:14px;}
.job-list .job-card{flex-direction:row;align-items:center;gap:18px;}
@media (max-width:640px){.job-list .job-card{flex-direction:column;align-items:flex-start;}}
.job-list .job-card .job-body{flex:1;}

/* ---------- Pagination ---------- */
.pagination{display:flex;gap:6px;justify-content:center;margin-top:36px;flex-wrap:wrap;}
.pagination a,.pagination span{padding:9px 15px;border:1px solid var(--border);border-radius:6px;font-size:14px;background:#fff;}
.pagination .current{background:var(--brand);color:#fff;border-color:var(--brand);}

/* ---------- Single Job Page ---------- */
.job-single{display:grid;grid-template-columns:2fr 1fr;gap:34px;align-items:start;}
@media (max-width:900px){.job-single{grid-template-columns:1fr;}}
.job-header{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px;margin-bottom:20px;}
.job-header h1{font-size:26px;margin-bottom:8px;}
.job-header .company-name{color:var(--muted);font-weight:600;}
.job-content{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px;}
.job-content h2{font-size:19px;margin-top:26px;}
.apply-box{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px;position:sticky;top:80px;}
.apply-box .meta-line{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px solid var(--border);font-size:14px;}
.apply-box .meta-line:last-of-type{border-bottom:none;}
.apply-box .meta-line strong{color:var(--muted);font-weight:600;}
.breadcrumbs{font-size:13px;color:var(--muted);margin-bottom:18px;}
.breadcrumbs a{color:var(--muted);}

/* ---------- Forms / misc pages ---------- */
.page-content{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:30px;max-width:900px;margin:0 auto;}
.contact-form input,.contact-form textarea{width:100%;padding:12px;border:1px solid var(--border);border-radius:8px;margin-bottom:14px;font-family:inherit;}

/* ---------- Footer ---------- */
.site-footer{background:#0f1a26;color:#c9d3dc;margin-top:60px;padding:50px 0 24px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;}
@media (max-width:760px){.footer-grid{grid-template-columns:1fr 1fr;}}
.site-footer h4{color:#fff;font-size:14px;text-transform:uppercase;letter-spacing:.04em;margin-bottom:14px;}
.site-footer ul{list-style:none;margin:0;padding:0;}
.site-footer li{margin-bottom:8px;}
.site-footer a{color:#c9d3dc;font-size:14px;}
.site-footer a:hover{color:#fff;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:36px;padding-top:20px;font-size:13px;color:#8a97a4;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;}

/* ---------- Empty state ---------- */
.empty-state{text-align:center;padding:60px 20px;color:var(--muted);}

/* ---------- Utility ---------- */
.text-center{text-align:center;}
.mt-0{margin-top:0;}