/* ── Zijmenu v4: Desktop vast zijmenu; Mobiel strakke header + slide-in drawer ── */

:root {
  --sn-bg: #ffffff;
  --sn-hover: #eef4ea;
  --sn-active: #e6f0e0;
  --sn-groen: #16663F;
}

/* DESKTOP (standaard) */
.mobile-header {
  display: none;
}

.side-nav {
  position: fixed;
  left: 0; top: 0; bottom: 0;
  width: 260px;
  background: var(--sn-bg);
  border-right: 1px solid rgba(25,32,44,.06);
  padding: 26px 0 20px;
  display: flex; flex-direction: column; gap: 2px;
  z-index: 100;
  transition: transform .25s ease;
}

.side-nav .brand {
  display: flex; align-items: center; gap: 13px;
  padding: 4px 22px 30px;
  text-decoration: none; white-space: nowrap;
}
.side-nav .brand img { width: 40px; height: 40px; flex-shrink: 0; }
.side-nav .brand span { font-size: 1.35em; color: var(--ink); }
.side-nav .brand em { color: var(--sn-groen); font-style: italic; }

.side-nav a.item {
  display: flex; align-items: center; gap: 14px;
  padding: 12px 22px; margin: 2px 14px; border-radius: 8px;
  color: var(--ink); text-decoration: none; white-space: nowrap;
  font-size: 1em;
  border-left: 3px solid transparent;
  transition: background .15s ease, border-color .15s ease, color .15s ease;
}
.side-nav a.item:hover { background: var(--sn-hover); }
.side-nav a.item[aria-current="page"] {
  background: var(--sn-active);
  border-left-color: var(--sn-groen);
  font-weight: 600;
  color: var(--sn-groen);
}
.side-nav .icoon {
  width: 20px; text-align: center; flex-shrink: 0;
  font-size: 1em;
  opacity: .6;
}
.side-nav a.item:hover .icoon, .side-nav a.item[aria-current="page"] .icoon { opacity: 1; }

.side-nav-close {
  display: none;
}

.side-nav-overlay {
  display: none;
}

body { padding-left: 260px; }

/* ── MOBIEL (<= 840px) ── */
@media (max-width: 840px) {
  body { 
    padding-left: 0 !important; 
    padding-top: 64px !important; 
  }

  /* Vaste mobiele topbalk */
  .mobile-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 64px;
    background: #ffffff;
    border-bottom: 1px solid rgba(25,32,44,.08);
    padding: 0 18px;
    z-index: 150;
    box-shadow: 0 2px 10px rgba(0,0,0,.03);
  }

  .mobile-header .brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
  }
  .mobile-header .brand img {
    width: 34px; height: 34px;
  }
  .mobile-header .brand span {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--ink);
  }
  .mobile-header .brand em {
    color: var(--sn-groen);
    font-style: italic;
  }

  /* Hamburger toggle button */
  .hamburger-btn {
    background: none;
    border: none;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--ink);
    border-radius: 8px;
    transition: background .15s;
  }
  .hamburger-btn:active {
    background: var(--sn-hover);
  }

  /* Side-nav wordt een vloeiende slide-in lade */
  .side-nav {
    position: fixed !important;
    top: 0; bottom: 0; left: 0;
    width: 280px;
    max-width: 85vw;
    background: #ffffff;
    z-index: 200;
    box-shadow: 4px 0 24px rgba(0,0,0,.15);
    transform: translateX(-100%);
    display: flex !important;
    flex-direction: column !important;
    padding: 16px 0 24px;
    border-right: 1px solid rgba(25,32,44,.08);
  }

  .side-nav.is-open {
    transform: translateX(0);
  }

  /* Bovenste rij van drawer: logo + sluitknop */
  .side-nav .drawer-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 18px 18px;
    border-bottom: 1px solid rgba(25,32,44,.06);
    margin-bottom: 12px;
  }

  .side-nav .brand {
    padding: 0;
  }

  .side-nav-close {
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    color: var(--muted);
    font-size: 1.3rem;
  }
  .side-nav-close:active {
    background: var(--sn-hover);
    color: var(--ink);
  }

  /* Links in mobiele lade: ruim, 44px touch targets, geen afkapping */
  .side-nav a.item {
    flex: none !important;
    margin: 3px 12px !important;
    padding: 12px 18px !important;
    font-size: 1.02rem !important;
    white-space: normal !important;
    border-radius: 8px;
  }

  .side-nav .label {
    overflow: visible !important;
    text-overflow: clip !important;
  }

  /* Donkere achtergrond overlay */
  .side-nav-overlay {
    display: block;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(13,12,16,.45);
    backdrop-filter: blur(3px);
    z-index: 190;
    opacity: 0;
    pointer-events: none;
    transition: opacity .25s ease;
  }

  .side-nav-overlay.is-active {
    opacity: 1;
    pointer-events: auto;
  }
}