/* =========================================================
   Eurotherm 2028 — Header / logo / nav redesign
   Loaded AFTER style.base.css. Overrides the old cluttered
   4-zone header with a clean 2-zone best-practice layout.
   All five color themes are preserved (uses base tokens).
   ========================================================= */

/* ---- Header shell -------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 90%, transparent);
  backdrop-filter: saturate(150%) blur(14px);
  -webkit-backdrop-filter: saturate(150%) blur(14px);
  border-bottom: 1px solid var(--color-divider);
}

/* Row 1: brand (left) | institutional logo + auth (right) */
.site-header__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding-block: var(--space-3);
}
.site-header__top-end {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

/* ---- Brand lockup -------------------------------------- */
.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
}
.site-header__brand:hover { text-decoration: none; }
.site-header__brand:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

.brand-logo {
  height: 40px;
  width: auto;
  max-width: 132px;
  flex: 0 0 auto;
  display: block;
  object-fit: contain;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.brand-text strong {
  font-family: var(--font-display);
  font-size: 1.18rem;
  letter-spacing: -0.015em;
  font-weight: 600;
  color: var(--color-text);
}
.brand-text span {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* ---- Row 2: full primary nav bar (all 10 items) -------- */
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex-wrap: wrap;
  border-top: 1px solid var(--color-divider);
  padding-block: 2px var(--space-1);
}
.site-nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: 0.5rem 0.7rem;
  border-radius: var(--radius-sm);
  transition: color 0.15s ease, background 0.15s ease;
  white-space: nowrap;
}
.site-nav a:hover {
  color: var(--color-primary);
  background: color-mix(in oklab, var(--color-primary) 8%, transparent);
  text-decoration: none;
}
.site-nav a.is-active {
  color: var(--color-primary);
  background: var(--color-primary-highlight);
  font-weight: 600;
}

/* ---- Header tools (theme picker + auth + CTA) ---------- */
.header-tools {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.header-tools .btn { padding: 0.6rem 0.95rem; font-size: 0.875rem; }

/* Account chip shown when logged in */
.account-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 0.3rem 0.75rem 0.3rem 0.4rem;
  background: var(--color-surface);
  font-size: 0.8125rem;
  color: var(--color-text);
  text-decoration: none;
}
.account-chip:hover { border-color: var(--color-primary); text-decoration: none; }
.account-chip__avatar {
  width: 26px; height: 26px; border-radius: var(--radius-full);
  background: var(--color-primary); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 0.75rem; font-weight: 600; flex: 0 0 26px;
}
.account-chip__role {
  font-size: 0.625rem; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

/* ---- Mobile hamburger ---------------------------------- */
.menu-toggle {
  display: none;
  width: 42px; height: 42px;
  align-items: center; justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
}

/* Collapse the full nav bar into a hamburger menu on smaller screens.
   Nothing is dropped — every item appears in the slide-down menu. */
@media (max-width: 860px) {
  .site-header__top-end { gap: var(--space-3); }
  .site-nav {
    display: none;
    position: absolute;
    inset-inline: 0;
    top: 100%;
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: stretch;
    background: var(--color-surface);
    border-top: 1px solid var(--color-divider);
    border-bottom: 1px solid var(--color-divider);
    padding: var(--space-3);
    box-shadow: var(--shadow-md);
    gap: var(--space-1);
  }
  .site-nav a { padding: var(--space-3); }
  .site-nav.is-open { display: flex; }
  .menu-toggle { display: inline-flex; }
  .header-tools .btn--primary { display: none; }
}

@media (max-width: 560px) {
  .brand-text span { display: none; }
  .header-ugent { display: none; }
}

/* ---- Footer UGent lockup (logo moved here) ------------- */
.footer-ugent {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}
.footer-ugent svg { height: 40px; width: auto; color: #fff; opacity: 0.92; }
.footer-ugent span {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.3;
}

/* ---- register / form helpers (added in rebuild) ----------------------- */
.form-note {
  margin: 0 0 var(--space-2);
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface-2, rgba(0,0,0,0.04));
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-md, 10px);
  font-size: 0.9rem;
  line-height: 1.55;
}
.form-note strong { display: block; margin-bottom: 2px; }
.form-note span { color: var(--color-text-muted); }

.success-mark { color: var(--color-primary); margin-bottom: var(--space-3); }

/* generic data panels reused by papers / reviewers / dashboard ---------- */
.panel {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md, 12px);
  padding: var(--space-6);
  background: var(--color-bg);
}
.panel + .panel { margin-top: var(--space-5); }
.panel__title { margin: 0 0 var(--space-2); }
.data-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.data-table th, .data-table td {
  text-align: left; padding: var(--space-3) var(--space-3);
  border-bottom: 1px solid var(--color-border); vertical-align: top;
}
.data-table th { font-weight: 600; color: var(--color-text-muted); font-size: 0.8rem;
  text-transform: uppercase; letter-spacing: 0.04em; }
.pill {
  display: inline-block; padding: 2px 10px; border-radius: 999px;
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.02em;
  background: var(--color-surface-2, rgba(0,0,0,0.06)); color: var(--color-text);
}
.pill--ok { background: rgba(47,122,68,0.15); color: #2f7a44; }
.pill--warn { background: rgba(182,83,42,0.15); color: var(--color-primary); }
.pill--muted { background: rgba(0,0,0,0.06); color: var(--color-text-muted); }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--space-4); }
.stat { border: 1px solid var(--color-border); border-radius: var(--radius-md, 12px);
  padding: var(--space-5); }
.stat__num { font-size: 1.9rem; font-weight: 600; line-height: 1; }
.stat__label { color: var(--color-text-muted); font-size: 0.85rem; margin-top: var(--space-2); }
.auth-gate { text-align: center; padding: var(--space-8) 0; }
.auth-gate .btn { margin: var(--space-2) var(--space-1) 0; }