/* ── Design Tokens ───────────────────────────────────────────────────────── */
:root {
  --bg:           #FFFFFF;
  --fg:           #000000;
  --fg-dim:       #666666;
  --border:       #000000;
  --accent:       #000000;
  --surface:      #FFFFFF;
  --surface-hover: #F5F5F5;
  --radius:       0px; /* Sharp corners for Slava aesthetic */
  --font-serif:   ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
  --font-sans:    "Inter", system-ui, -apple-system, sans-serif;
  --transition:   0.2s cubic-bezier(0.23, 1, 0.32, 1);
}

/* ── Reset / Base ────────────────────────────────────────────────────────── */
*, *::before, *::after { 
  box-sizing: border-box; 
  margin: 0; 
  padding: 0; 
}

html { 
  scroll-behavior: smooth; 
  background: var(--bg);
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  background: var(--bg);
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
input, select { font-family: inherit; border: 1px solid var(--border); border-radius: 0; outline: none; }

/* ── Typography ──────────────────────────────────────────────────────────── */
h1, h2, h3, .hero-title, .section-title {
  font-family: var(--font-serif);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 0.95;
}

.hero-title {
  font-size: clamp(48px, 12vw, 120px);
  margin-bottom: 32px;
}

.hero-sub {
  font-size: 18px;
  max-width: 600px;
  margin-top: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.section-title {
  font-size: clamp(32px, 6vw, 64px);
  margin-bottom: 40px;
}

/* ── Navbar ──────────────────────────────────────────────────────────────── */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 40px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg);
}

.navbar-logo {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 600;
}

.navbar-links {
  display: flex;
  gap: 32px;
}

.navbar-links a {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
  position: relative;
}

.navbar-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--fg);
  transition: width var(--transition);
}

.navbar-links a.active::after,
.navbar-links a:hover::after {
  width: 100%;
}

/* ── Page Layout ─────────────────────────────────────────────────────────── */
.page {
  padding: 80px 40px;
  max-width: 1600px;
  margin: 0 auto;
}

.page-sm {
  max-width: 1000px;
}

/* ── Loading Screen ──────────────────────────────────────────────────────── */
#loading-screen {
  position: fixed; inset: 0;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  padding: 80px 40px;
  z-index: 9999;
}

#loading-screen .load-logo {
  font-family: var(--font-serif);
  font-size: 120px;
  line-height: 0.8;
  margin-bottom: 40px;
}

.progress-wrap {
  width: 100%;
  height: 1px;
  background: var(--surface-hover);
  margin: 40px 0;
}

.progress-bar {
  height: 100%;
  background: var(--fg);
  transition: width 0.3s ease;
}

.progress-label {
  font-family: var(--font-serif);
  font-size: 32px;
}

/* ── Home Page ───────────────────────────────────────────────────────────── */
.home-hero {
  border-bottom: 1px solid var(--border);
  padding-bottom: 80px;
  margin-bottom: 80px;
}

.home-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--border);
}

.home-card {
  padding: 60px 40px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 24px;
  transition: background var(--transition);
}

.home-card:last-child {
  border-right: none;
}

.home-card:hover {
  background: var(--surface-hover);
}

.home-card .hc-icon { font-size: 32px; }

.home-card .hc-title {
  font-family: var(--font-serif);
  font-size: 40px;
  line-height: 1;
}

.home-card .hc-desc {
  font-size: 16px;
  color: var(--fg-dim);
}

.home-card .hc-count {
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 32px;
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.btn-primary {
  background: var(--fg);
  color: var(--bg);
}

.btn-primary:hover {
  background: var(--bg);
  color: var(--fg);
}

.btn-lg {
  padding: 24px 48px;
  font-size: 18px;
}

/* ── Inputs & Filters ────────────────────────────────────────────────────── */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 80px;
}

.filter-group {
  flex: 1;
  min-width: 200px;
  padding: 24px;
  border-right: 1px solid var(--border);
}

.filter-group:last-child { border-right: none; }

.filter-group label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.filter-group select, .filter-group input {
  width: 100%;
  border: none;
  font-size: 18px;
  font-family: var(--font-serif);
  padding: 0;
  background: transparent;
}

/* ── Grid Views ──────────────────────────────────────────────────────────── */
.inst-search-wrap {
  margin-bottom: 80px;
}

.inst-search-wrap input {
  width: 100%;
  padding: 40px 0;
  font-size: 64px;
  font-family: var(--font-serif);
  border: none;
  border-bottom: 2px solid var(--border);
}

.inst-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
  border-top: 1px solid var(--border);
}

.inst-card {
  padding: 60px 40px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

.inst-card:hover { background: var(--surface-hover); }

.inst-card .ic-name {
  font-family: var(--font-serif);
  font-size: 32px;
  line-height: 1;
  margin-bottom: 16px;
}

.inst-card .ic-meta {
  display: flex;
  gap: 16px;
  align-items: center;
}

/* ── Badges ──────────────────────────────────────────────────────────────── */
.badge {
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 4px 8px;
  border: 1px solid var(--border);
}

/* ── Rank Finder ─────────────────────────────────────────────────────────── */
.rank-hero {
  border-bottom: 1px solid var(--border);
  padding-bottom: 80px;
  margin-bottom: 80px;
}

.rank-input-big {
  font-family: var(--font-serif);
  font-size: 120px;
  width: 100%;
  border: none;
  border-bottom: 2px solid var(--border);
  margin-top: 40px;
  padding: 20px 0;
}

.rank-results {
  margin-top: 80px;
}

.result-card {
  display: flex;
  justify-content: space-between;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
  gap: 40px;
}

.result-card .rc-main { flex: 1; }

.result-card .rc-prog {
  font-family: var(--font-serif);
  font-size: 32px;
  line-height: 1.1;
  margin-bottom: 8px;
}

.result-card .rc-meta {
  font-size: 14px;
  color: var(--fg-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.result-card .rc-ranks {
  text-align: right;
  min-width: 150px;
}

.result-card .rc-close {
  font-family: var(--font-serif);
  font-size: 48px;
  line-height: 1;
}

.result-card .rc-open {
  font-size: 14px;
  color: var(--fg-dim);
}

/* ── Tables ──────────────────────────────────────────────────────────────── */
.table-wrap {
  width: 100%;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th {
  text-align: left;
  padding: 16px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-bottom: 1px solid var(--border);
}

td {
  padding: 16px;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
}

tr:hover td { background: var(--surface-hover); }

.rank-cell {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
}

/* ── Branch Chips ────────────────────────────────────────────────────────── */
.branch-chips-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
}

.branch-chip {
  padding: 8px 16px;
  border: 1px solid var(--border);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all var(--transition);
  cursor: pointer;
}

.branch-chip:hover, .branch-chip.active {
  background: var(--fg);
  color: var(--bg);
}

/* ── Program Groups ──────────────────────────────────────────────────────── */
.prog-group {
  margin-bottom: 40px;
  border: 1px solid var(--border);
}

.prog-group-header {
  padding: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  background: var(--bg);
  transition: background var(--transition);
}

.prog-group-header:hover { background: var(--surface-hover); }

.ph-name {
  font-family: var(--font-serif);
  font-size: 24px;
}

.ph-count {
  font-size: 12px;
  font-weight: 800;
  border: 1px solid var(--border);
  padding: 2px 8px;
}

/* ── Utilities ───────────────────────────────────────────────────────────── */
.hidden { display: none !important; }
.mt-4 { margin-top: 40px; }
.mb-4 { margin-bottom: 40px; }
.results-count {
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 24px;
}

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .page { padding: 40px 20px; }
  .navbar { padding: 20px; }
  .home-actions { grid-template-columns: 1fr; }
  .inst-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 64px; }
  .rank-input-big { font-size: 64px; }
  .result-card { flex-direction: column; gap: 16px; }
  .result-card .rc-ranks { text-align: left; }
}