:root {
  --primary: #40409a;
  --primary-dark: #2c2c73;
  --accent: #ef3139;
  --bg: #f5f7fb;
  --text: #1f2937;
  --muted: #6b7280;
  --white: #ffffff;
  --border: #d8deea;
  --success: #0f766e;
  --error: #b91c1c;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: var(--bg);
  color: var(--text);
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.narrow { width: min(760px, calc(100% - 32px)); }
.section { padding: 72px 0; }
.section-alt { background: #eef2f9; }
h1, h2, h3, h4 { margin-top: 0; }
p { color: var(--muted); line-height: 1.7; }
.site-header, .simple-header {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(216,222,234,.8);
  position: sticky;
  top: 0;
  z-index: 20;
}
.header-inner { display:flex; align-items:center; justify-content:space-between; gap:24px; min-height:88px; }
.brand img { height: 68px; width: auto; }
.menu { display:flex; align-items:center; gap:22px; flex-wrap: wrap; }
.menu a { font-weight: 700; color: var(--primary-dark); }
.hero {
  padding: 80px 0 60px;
  background: linear-gradient(135deg, rgba(64,64,154,.08), rgba(239,49,57,.06));
}
.hero-grid { display:grid; grid-template-columns: 1.3fr .9fr; gap:32px; align-items:center; }
.eyebrow {
  display:inline-block; padding:8px 14px; border-radius:999px;
  background: rgba(64,64,154,.1); color: var(--primary); font-weight:700; margin-bottom:18px;
}
.hero h1 { font-size: clamp(2rem, 4vw, 3.5rem); line-height: 1.1; margin-bottom: 16px; color: var(--primary-dark); }
.hero-actions { display:flex; gap:14px; flex-wrap:wrap; margin-top: 28px; }
.hero-card, .info-card, .result-card, .panel-card, .stat-card, .auth-card {
  background: var(--white); border-radius: 22px; box-shadow: var(--shadow); border: 1px solid rgba(216,222,234,.8);
}
.hero-card { padding: 28px; }
.hero-card h3 { color: var(--primary); margin-bottom: 18px; }
.hero-card ul { padding-left: 18px; margin: 0; color: var(--muted); line-height: 1.7; }
.cards-3 { display:grid; grid-template-columns: repeat(3, 1fr); gap:22px; margin-top: 30px; }
.info-card { padding: 26px; }
.info-card h3 { color: var(--primary); }
.step {
  display:inline-flex; align-items:center; justify-content:center;
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--accent); color: var(--white); font-weight: 700; margin-bottom: 16px;
}
.search-form, .stack-form { margin-top: 28px; }
.form-grid { display:grid; grid-template-columns: repeat(2, 1fr); gap:18px; margin-bottom: 18px; }
label { display:block; font-weight:700; margin-bottom:8px; color: var(--primary-dark); }
input, select, textarea {
  width:100%; padding:14px 16px; border-radius: 14px; border: 1px solid var(--border);
  background:#fff; font-size: 1rem; outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(64,64,154,.12); }
.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  border:none; border-radius: 14px; padding: 14px 22px; font-weight:700; cursor:pointer;
}
.btn-primary { background: var(--primary); color: var(--white); }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { border: 1px solid var(--primary); color: var(--primary); background: transparent; }
.btn-light { background: #edf2ff; color: var(--primary-dark); }
.btn-block { width:100%; }
.site-footer { background: var(--primary-dark); color: rgba(255,255,255,.92); padding: 42px 0; }
.site-footer p, .site-footer a { color: rgba(255,255,255,.8); }
.footer-grid { display:grid; grid-template-columns: 1.1fr .8fr .8fr; gap:24px; align-items:start; }
.footer-logo { max-width: 210px; background:#fff; padding:10px; border-radius:14px; }
.result-card, .panel-card { padding: 28px; }
.success-card { border-left: 5px solid var(--success); }
.error-card { border-left: 5px solid var(--error); }
.result-grid { display:grid; grid-template-columns: repeat(2, 1fr); gap:14px; color: var(--text); }
.flash {
  position: fixed; top: 18px; right: 18px; z-index: 100;
  padding: 14px 18px; border-radius: 14px; color:#fff; box-shadow: var(--shadow);
}
.flash-success { background: var(--success); }
.flash-error { background: var(--error); }
.auth-page { min-height: 100vh; display:grid; place-items:center; padding: 40px 16px; }
.auth-card { width:min(460px, 100%); padding: 36px; text-align:center; }
.auth-logo { max-width: 240px; margin: 0 auto 24px; }
.admin-layout { display:grid; grid-template-columns: 260px 1fr; min-height: 100vh; }
.admin-sidebar {
  background: #101531; color:#fff; padding: 26px 20px; position: sticky; top:0; height:100vh;
}
.sidebar-logo { background:#fff; border-radius:18px; padding:12px; margin-bottom: 24px; }
.admin-sidebar nav { display:grid; gap:10px; }
.admin-sidebar nav a { padding:12px 14px; border-radius:12px; color:#e5ebff; }
.admin-sidebar nav a:hover { background: rgba(255,255,255,.08); }
.admin-main { padding: 26px; }
.admin-topbar { margin-bottom: 24px; }
.stats-grid { display:grid; grid-template-columns: repeat(3, 1fr); gap:18px; margin-bottom:24px; }
.stat-card { padding:22px; }
.stat-card span { display:block; color:var(--muted); margin-bottom:10px; }
.stat-card strong { font-size:2rem; color:var(--primary-dark); }
.table-wrap { overflow:auto; }
table { width:100%; border-collapse: collapse; }
th, td { padding: 14px 12px; border-bottom: 1px solid var(--border); text-align:left; }
th { color: var(--primary-dark); background: #f7f9ff; }
.panel-actions, .search-inline { display:flex; gap:14px; flex-wrap:wrap; align-items:center; }
.panel-actions { justify-content: space-between; margin-bottom: 20px; }
.search-inline input { min-width: 320px; }
.actions-cell { display:flex; gap:12px; flex-wrap:wrap; }
.actions-cell a { color: var(--primary); font-weight: 700; }
.admin-form-grid { display:grid; grid-template-columns: repeat(2, 1fr); gap:18px; }
.full-width { grid-column: 1 / -1; }
.form-actions { display:flex; gap:14px; }
.csv-sample {
  background:#0f172a; color:#e2e8f0; padding:16px; border-radius:16px; overflow:auto;
}
@media (max-width: 920px) {
  .hero-grid, .cards-3, .footer-grid, .stats-grid, .admin-form-grid, .result-grid { grid-template-columns: 1fr; }
  .admin-layout { grid-template-columns: 1fr; }
  .admin-sidebar { position: relative; height: auto; }
}
@media (max-width: 700px) {
  .menu { display:none; }
  .form-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 48px; }
  .header-inner { min-height: 82px; }
  .brand img { height: 54px; }
  .search-inline input { min-width: 100%; }
}