:root {
  --bg: #f4f6f9;
  --card: #ffffff;
  --text: #1b2430;
  --muted: #6b7686;
  --border: #e2e6ec;
  --accent: #2f5dd6;
  --accent-dark: #1f3f9e;
  --green: #1f9d55;
  --orange: #d97706;
  --red: #dc2626;
  --border-radius: 6px;
  font-family: -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

/* Prevent horizontal overflow at body level */
html, body {
  overflow-x: hidden;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 16px;
}
.brand { font-weight: 700; font-size: 17px; color: var(--text); white-space: nowrap; }
.topbar-nav { display: flex; align-items: center; gap: 10px 16px; flex-wrap: wrap; }

/* Mobile menu button: hidden on desktop */
.mobiel-menu-knop { display: none; }

.filterbar {
  background: #eef1f7;
  border-bottom: 1px solid var(--border);
}
.filterbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 10px 24px;
  display: flex;
  align-items: flex-end;
  gap: 18px;
  flex-wrap: wrap;
}
.filterbar label {
  display: flex;
  flex-direction: column;
  font-size: 12px;
  color: var(--muted);
  gap: 3px;
}
.filterbar select {
  padding: 6px 8px;
  border-radius: 6px;
  border: 1px solid var(--border);
  min-width: 160px;
  font-size: 13px;
}

.content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}

.knop {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 8px 14px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  font-size: 13px;
}
.knop:hover { background: var(--accent-dark); text-decoration: none; }
.knop-klein { padding: 6px 12px; font-size: 12px; }
.knop-secundair {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--border);
}
.knop-tekst { font-size: 12px; color: var(--muted); align-self: center; }
summary.knop { list-style: none; }
summary.knop::-webkit-details-marker { display: none; }
.knop-waarschuwing { background: #fbe0e0; color: var(--red); border-color: #f3b8b8; }
.knop-waarschuwing:hover { background: #f7caca; }
.ingelogd-als { font-size: 12px; color: var(--muted); }

.login-pagina { max-width: 340px; margin: 80px auto; }
.login-fout { background: #fbe0e0; color: var(--red); padding: 10px 12px; border-radius: 6px; font-size: 13px; margin-bottom: 14px; }

h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 16px; margin: 0 0 12px; }
.subtitel { color: var(--muted); font-size: 13px; margin-bottom: 20px; }

.omzet-hero { text-align: center; padding: 24px; }
.omzet-hero-bedrag { font-size: 40px; font-weight: 800; margin: 6px 0 4px; }
.omzet-hero-subtotalen { margin-top: 14px; font-size: 13px; color: var(--muted); line-height: 1.7; }
.omzet-hero-subtotalen strong { color: var(--fg, #111); }
#alert-kaart.alert-kaart-actief { border-color: var(--red); background: #fdf1f1; }

.chat-berichten {
  max-height: 260px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  margin: 10px 0;
  background: var(--bg);
}
.chat-bericht { max-width: 80%; margin: 6px 0; padding: 8px 12px; border-radius: 10px; font-size: 13px; line-height: 1.4; white-space: pre-wrap; }
.chat-bericht-user { margin-left: auto; background: var(--accent); color: #fff; }
.chat-bericht-assistant { margin-right: auto; background: var(--card); border: 1px solid var(--border); }
.chat-bericht-assistant.chat-bezig { color: var(--muted); font-style: italic; }
.chat-form { display: flex; gap: 8px; }
.chat-form input { flex: 1; padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; font-size: 13px; }

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}
.kpi-tegel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
}
.kpi-label { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .03em; }
.kpi-waarde { font-size: 22px; font-weight: 700; margin-top: 4px; }
.kpi-subwaarde { font-size: 12px; color: var(--muted); margin-top: 2px; }
.kpi-waarde.positief { color: var(--green); }
.kpi-waarde.negatief { color: var(--red); }

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}
@media (max-width: 850px) { .grid-2 { grid-template-columns: 1fr; } }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
  margin-bottom: 20px;
}

.tabbalk {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.tab-knop {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
}
.tab-knop:hover { color: var(--text); }
.tab-knop.actief { color: var(--accent); border-bottom-color: var(--accent); }
.tab-paneel { display: none; }
.tab-paneel.actief { display: block; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
th, td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
}
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; cursor: pointer; user-select: none; }
th:hover { color: var(--text); }
tbody tr:hover { background: #f8f9fc; }
td.num { text-align: right; font-variant-numeric: tabular-nums; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  background: #e6ecfb;
  color: var(--accent-dark);
}
.badge.Closed { background: #dcf5e4; color: var(--green); }
.badge.Onderhandeling { background: #fef1d9; color: var(--orange); }
.badge.geblokkeerd { background: #fbe0e0; color: var(--red); }

.veldenlijst { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 20px; }
.veld-label { font-size: 11px; color: var(--muted); text-transform: uppercase; }
.veld-waarde { font-size: 14px; font-weight: 500; word-break: break-word; }

.detail-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; flex-wrap: wrap; margin-bottom: 16px; }

.formulier { display: flex; flex-direction: column; gap: 12px; }
.formulier label { font-weight: 600; margin-bottom: 3px; display: block; }
.formulier input[type="text"], .formulier input[type="email"], .formulier input[type="date"], .formulier input[type="number"], .formulier input[type="password"], .formulier input[type="tel"], .formulier textarea, .formulier select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--border-radius);
  font-size: 14px;
}
.formulier-rij { display: flex; flex-direction: column; }
.formulier-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 700px) { .formulier-grid { grid-template-columns: 1fr; } }

.toolbar { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.toolbar h2 { margin-bottom: 0; }
.toolbar-rechts { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

select.inline-status { padding: 4px 8px; border-radius: 6px; border: 1px solid var(--border); font-size: 13px; }

.notitie-rij { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 10px; padding-bottom: 10px; border-bottom: 1px solid var(--border); }
.notitie-meta { font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.notitie-bewerken { font-size: 12px; margin-top: 6px; color: var(--muted); text-decoration: underline; cursor: pointer; }

.taak-rij { display: flex; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.taak-check { flex-shrink: 0; }
.taak-inhoud { flex: 1; }
.taak-rij.klaar { opacity: 0.6; text-decoration: line-through; }

.ondertekening { padding: 18px; background: var(--card); border: 1px solid var(--border); border-radius: 10px; margin-bottom: 12px; }
.ondertekening-rij { display: flex; gap: 12px; align-items: flex-start; flex-wrap: wrap; }
.ondertekening-label { font-size: 11px; text-transform: uppercase; color: var(--muted); }
.signhost-badge { display: flex; align-items: center; gap: 4px; font-size: 11px; color: #666; background: #eee; padding: 2px 8px; border-radius: 8px; }

.banner-succes { background: #dcf5e4; color: var(--green); padding: 10px 14px; border-radius: 6px; margin-bottom: 12px; font-size: 13px; }

.omzet-totaal-blok { padding: 16px; background: #f8fafd; border-radius: 8px; margin-top: 16px; text-align: right; }
.omzet-totaal-blok .kpi-label { display: block; margin-bottom: 4px; }
.omzet-totaal-blok .kpi-waarde { font-size: 18px; }

.omzet-subtotalen-tabel { margin-top: 12px; font-size: 13px; }
.omzet-subtotalen-tabel th, .omzet-subtotalen-tabel td { padding: 5px 8px; border: none; text-align: right; }
.omzet-subtotalen-tabel th { text-transform: none; font-weight: 600; color: var(--text); }

.dropzone {
  border: 2px dashed var(--border);
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
  background: var(--bg);
  transition: border-color 0.15s, background 0.15s;
}
.dropzone-actief { border-color: var(--accent); background: #eef2ff; }

.getekend-lijst { display: flex; flex-direction: column; }
.getekend-item { border-bottom: 1px solid var(--border); padding: 10px 0; }
.getekend-item:last-child { border-bottom: none; padding-bottom: 0; }
.getekend-item:first-child { padding-top: 0; }
.getekend-item-naam { font-size: 14px; font-weight: 600; word-break: break-word; }
.getekend-item-acties { display: flex; flex-wrap: wrap; gap: 4px 12px; margin-top: 6px; font-size: 12px; }

.activiteit { border-bottom: 1px solid var(--border); padding: 10px 0; }
.activiteit-meta { font-size: 12px; color: var(--muted); }

.chart-wrap { position: relative; height: 280px; }
.chart-wrap.laag { height: 220px; }

.leeg { color: var(--muted); padding: 20px 0; text-align: center; }

/* =============================================================
   MOBILE PORTRAIT STYLES (max-width: 640px)
   ============================================================= */
@media (max-width: 640px) {
  /* Base content spacing */
  .content { padding: 14px; }
  .topbar-inner { padding: 12px 14px; }
  .filterbar-inner { padding: 10px 14px; gap: 12px; }
  .filterbar select { min-width: 0; width: 100%; }
  .filterbar label { width: 100%; }

  /* Topbar navigation */
  .topbar-inner { 
    flex-wrap: wrap; 
    padding: 8px 12px; 
    gap: 8px; 
  }
  
  .mobiel-menu-knop { 
    display: block; 
    background: none; 
    border: none; 
    font-size: 24px; 
    color: var(--text); 
    cursor: pointer; 
    min-width: 44px; 
    min-height: 44px;
    padding: 0;
    line-height: 1;
  }
  
  .topbar-nav { 
    display: none; 
    width: 100%; 
    flex-direction: column; 
    gap: 4px;
    order: 3; /* Push nav below brand and menu button */
  }
  
  .topbar-nav.open { 
    display: flex; 
  }
  
  .topbar-nav a, 
  .topbar-nav button,
  .topbar-nav .knop,
  .topbar-nav .knop-tekst {
    display: block; 
    padding: 12px; 
    min-height: 44px; 
    text-align: left; 
    border-radius: var(--border-radius);
    width: 100%;
    box-sizing: border-box;
  }
  
  .topbar-nav .knop {
    text-align: center;
  }
  
  .topbar-nav .ingelogd-als {
    padding: 12px;
    display: block;
  }
  
  /* Brand title overflow prevention */
  .brand { 
    max-width: calc(100vw - 80px); 
    overflow: hidden; 
    text-overflow: ellipsis; 
  }

  /* Tab bar horizontal scrolling */
  .tabbalk { 
    display: flex; 
    overflow-x: auto; 
    -webkit-overflow-scrolling: touch; 
    gap: 4px; 
    padding-bottom: 8px; 
    margin: 0 -14px; 
    padding-left: 14px; 
    padding-right: 14px;
    scrollbar-width: thin;
  }
  
  .tabbalk::-webkit-scrollbar { 
    height: 4px; 
  }
  
  .tabbalk::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 2px;
  }
  
  .tab-knop { 
    flex-shrink: 0; 
    min-height: 44px; 
    padding: 10px 16px; 
    white-space: nowrap; 
    font-size: 14px; 
  }

  /* Content sections */
  .card { 
    padding: 14px; 
    margin-bottom: 16px;
    overflow-x: auto;
  }
  
  .detail-header {
    flex-direction: column;
    gap: 12px;
  }
  
  .detail-header > div:last-child {
    width: 100%;
    display: flex;
    gap: 8px;
  }
  
  .detail-header .knop {
    flex: 1;
    text-align: center;
  }

  /* Tables with horizontal scroll */
  table { 
    display: block; 
    max-width: 100%; 
    overflow-x: auto; 
    -webkit-overflow-scrolling: touch; 
    white-space: nowrap;
    min-width: 100%;
  }
  
  table.omzet-subtotalen-tabel { 
    white-space: normal;
    display: table;
  }

  /* KPI and grid layouts */
  .omzet-hero-bedrag { font-size: 28px; }
  .grid-2 { grid-template-columns: 1fr; }
  .kpi-grid { grid-template-columns: 1fr 1fr; }
  .veldenlijst { grid-template-columns: 1fr; gap: 12px; }

  /* Charts */
  .chart-wrap { height: 200px; }
  .chart-wrap.laag { height: 180px; }

  /* Forms - touch friendly */
  .formulier-grid { 
    grid-template-columns: 1fr; 
    gap: 12px;
  }
  
  .formulier input[type="text"], 
  .formulier input[type="email"], 
  .formulier input[type="date"], 
  .formulier input[type="number"], 
  .formulier input[type="password"], 
  .formulier input[type="tel"],
  .formulier textarea, 
  .formulier select,
  input[type="text"], 
  input[type="email"], 
  input[type="date"], 
  input[type="number"], 
  input[type="password"], 
  input[type="tel"],
  textarea, 
  select {
    min-height: 44px; 
    font-size: 16px; /* Prevents iOS zoom */
    padding: 10px 12px;
  }
  
  /* Buttons - touch friendly (44px minimum target) */
  .knop,
  button,
  [type="submit"],
  [type="button"] {
    min-height: 44px;
    min-width: 44px;
    padding: 12px 20px;
    font-size: 16px;
  }
  
  .knop-klein {
    padding: 10px 14px;
    font-size: 14px;
  }
  
  .toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  
  .toolbar-rechts {
    width: 100%;
    flex-direction: column;
  }
  
  .toolbar-rechts .knop,
  .toolbar-rechts button {
    width: 100%;
  }

  /* Signature screen (ondertekenen.html) */
  .login-pagina { 
    max-width: 100%; 
    margin: 20px auto; 
    padding: 0 16px;
  }
  
  .onderteken-container,
  .signature-wrapper {
    padding: 20px 16px;
    max-width: 100%;
  }
  
  canvas,
  .signature-pad {
    width: 100%;
    height: 200px;
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    touch-action: none; /* Prevent scroll while signing */
  }
  
  .onderteken-sectie {
    margin-bottom: 24px;
  }

  /* Filter bar stacked on mobile */
  .filterbar-inner {
    flex-direction: column;
    align-items: stretch;
  }
  
  .filterbar label {
    width: 100%;
  }
  
  .filterbar .knop,
  .filterbar .knop-tekst {
    width: 100%;
    text-align: center;
  }

  /* Prevent any element from causing horizontal overflow */
  .topbar,
  .filterbar,
  .content,
  .card,
  .tab-paneel {
    max-width: 100vw;
  }
  
  /* Chat adjustments */
  .chat-bericht {
    max-width: 90%;
  }
  
  .chat-form {
    flex-direction: column;
  }
  
  .chat-form input,
  .chat-form button {
    width: 100%;
  }
  
  /* Notitie/taak rows */
  .notitie-rij,
  .taak-rij {
    flex-direction: column;
    gap: 8px;
  }
  
  /* Ondertekening row */
  .ondertekening-rij {
    flex-direction: column;
    gap: 8px;
  }
  
  /* Dropzone */
  .dropzone {
    padding: 20px;
  }
}

/* =============================================================
   MOBILE LANDSCAPE STYLES (max-width: 900px and landscape)
   ============================================================= */
@media (max-width: 900px) and (orientation: landscape) {
  /* Topbar stays horizontal but compact */
  .topbar-inner {
    padding: 6px 12px;
  }
  
  /* Show nav items, allow wrap */
  .topbar-nav {
    display: flex;
    flex-wrap: wrap;
  }
  
  /* Hide hamburger in landscape - enough space */
  .mobiel-menu-knop {
    display: none;
  }
  
  /* Tab bar still scrollable */
  .tabbalk {
    display: flex;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    gap: 4px;
    padding-bottom: 8px;
    margin: 0 -14px;
    padding-left: 14px;
    padding-right: 14px;
  }
  
  /* Forms can use 2 columns in landscape */
  .formulier-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  
  /* Signature canvas shorter in landscape */
  canvas,
  .signature-pad {
    height: 150px;
  }
  
  /* Content sections smaller margins */
  .card {
    margin-bottom: 12px;
  }
  
  /* KPI grid 3 columns */
  .kpi-grid { 
    grid-template-columns: repeat(3, 1fr); 
  }
  
  /* Veldenlijst 3 columns */
  .veldenlijst { 
    grid-template-columns: repeat(3, 1fr); 
  }
  
  /* Filterbar horizontal in landscape */
  .filterbar-inner {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: flex-end;
  }
  
  .filterbar label {
    width: auto;
    min-width: 140px;
  }
}