/* ─── TOKENS ─────────────────────────────────────────────────────────────── */
:root {
  --bg:            #eef4f8;
  --panel:         #ffffff;
  --panel-soft:    #f5f9fc;
  --line:          #dce8f2;
  --text:          #162d44;
  --text-soft:     #5f7a8f;
  --primary:       #0b4f99;
  --primary-dark:  #083d77;
  --primary-soft:  #eaf3ff;
  --accent:        #e67e00;
  --accent-soft:   #fff4e6;
  --success:       #177a4e;
  --success-soft:  #edfaf3;
  --danger:        #c0392b;
  --danger-soft:   #fdf1f0;
  --shadow-sm:     0 2px 8px rgba(16,40,70,0.08);
  --shadow-md:     0 6px 22px rgba(16,40,70,0.10);
  --shadow-lg:     0 12px 40px rgba(16,40,70,0.12);
  --r-sm:  10px;
  --r-md:  14px;
  --r-lg:  18px;
  --r-xl:  24px;
}

*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  font-family: "Segoe UI", system-ui, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
}
body { min-height: 100vh; }

.app-shell { min-height: 100vh; display: flex; flex-direction: column; }

/* ─── HEADER ─────────────────────────────────────────────────────────────── */
.app-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 20px;
  padding: 18px 28px;
  background: #fff;
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}
.app-header-left { display: flex; gap: 8px; align-items: center; }
.app-header-center h1 {
  margin: 0;
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: -0.02em;
}
.app-header-center p { margin: 4px 0 0; font-size: 0.9rem; color: var(--text-soft); }
.app-header-right { display: flex; gap: 10px; align-items: center; }

/* ─── MAIN ───────────────────────────────────────────────────────────────── */
.app-main {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 24px;
  padding: 24px;
  align-items: start;
  flex: 1;
}
/* Canvas vult volledige breedte als left-panel verborgen is */
.app-main:has(> #left-panel[style*="display: none"]),
.app-main:has(> #left-panel[style*="display:none"]) {
  grid-template-columns: minmax(0, 1fr);
}

/* ─── BUTTONS ─────────────────────────────────────────────────────────────── */
button { font: inherit; cursor: pointer; border: none; transition: all 0.17s ease; display: inline-flex; align-items: center; justify-content: center; gap: 6px; }
button:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

.primary-btn {
  background: var(--primary); color: #fff;
  border-radius: var(--r-md); padding: 11px 20px;
  font-weight: 700; font-size: 0.92rem;
  box-shadow: 0 3px 10px rgba(11,79,153,0.22);
}
.primary-btn:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 5px 16px rgba(11,79,153,0.28); }

.secondary-btn {
  background: #fff; color: var(--primary);
  border: 1.5px solid #c5d8ed;
  border-radius: var(--r-md); padding: 11px 20px;
  font-weight: 700; font-size: 0.92rem;
}
.secondary-btn:hover { background: var(--primary-soft); border-color: #a0c0e0; }

.back-btn {
  background: #0b3060; color: #fff; border: none;
  border-radius: var(--r-md); padding: 10px 18px;
  font-weight: 700; font-size: 0.88rem;
  box-shadow: 0 3px 10px rgba(10,40,90,0.22);
  white-space: nowrap;
}
.back-btn:hover { background: #082448; transform: translateY(-1px); }

.danger-btn {
  background: var(--danger-soft); color: var(--danger);
  border: 1.5px solid #e8b4b0;
  border-radius: var(--r-md); padding: 11px 20px;
  font-weight: 700; font-size: 0.92rem;
}
.danger-btn:hover { background: #fce4e2; border-color: var(--danger); }

/* ─── SETTINGS PANEL ─────────────────────────────────────────────────────── */
.settings-panel {
  position: sticky; top: 80px;
  max-height: calc(100vh - 104px);
  overflow-y: auto;
  scrollbar-width: thin; scrollbar-color: #c5d8ed transparent;
  display: flex; flex-direction: column; gap: 14px;
}
.settings-panel::-webkit-scrollbar { width: 5px; }
.settings-panel::-webkit-scrollbar-thumb { background: #c5d8ed; border-radius: 99px; }

.panel-top-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 2px; }
.panel-top-row h2 { margin: 0; font-size: 1.2rem; font-weight: 700; color: var(--text); }

/* ─── SETTING CARDS ──────────────────────────────────────────────────────── */
.setting-card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--r-lg); box-shadow: var(--shadow-sm); overflow: hidden;
}
.setting-card-header {
  padding: 11px 16px 9px;
  background: linear-gradient(to bottom, #f8fbfe, #f3f8fc);
  border-bottom: 1px solid #e6eef5;
}
.setting-card-header h3 { margin: 0; font-size: 0.88rem; font-weight: 700; color: #1a3352; text-transform: uppercase; letter-spacing: 0.04em; }
.setting-card-body { padding: 12px 16px; display: flex; flex-direction: column; gap: 10px; }

/* ─── FORM ROWS ──────────────────────────────────────────────────────────── */
.form-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.form-label { font-weight: 600; font-size: 0.86rem; color: #2b4a65; flex-shrink: 0; }

.cfg-select {
  font: inherit; font-size: 0.86rem;
  padding: 6px 10px; border: 1.5px solid #ccdce8;
  border-radius: var(--r-sm); background: #fff; color: var(--text);
  min-width: 0; max-width: 185px; width: 100%;
  transition: border-color 0.15s, box-shadow 0.15s; cursor: pointer;
}
.cfg-select:focus { outline: none; border-color: #7aaee0; box-shadow: 0 0 0 3px rgba(126,174,224,0.18); }

/* ─── MELDING BAR (buiten left-panel, onder header) ─────────────────────── */
.melding-bar {
  display: none;
  margin: 0 24px 12px;
  padding: 12px 16px;
  background: #fff9ee;
  border: 1px solid #f5c97a;
  border-radius: var(--r-md);
  color: #7a4500; font-weight: 600; font-size: 0.88rem;
  box-shadow: var(--shadow-sm);
}
.melding-bar:not(:empty) { display: block; }

/* ─── MESSAGE BOX ────────────────────────────────────────────────────────── */
.message-box {
  padding: 12px 16px; background: #fff9ee;
  border: 1px solid #f5c97a; border-radius: var(--r-md);
  color: #7a4500; font-weight: 600; font-size: 0.88rem;
  box-shadow: var(--shadow-sm); display: none;
}
.message-box.visible { display: block; }
.message-box:not(:empty) { display: block; }

/* ─── PREVIEW ─────────────────────────────────────────────────────────────── */
.preview-panel { min-width: 0; }
.preview-card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--r-xl); box-shadow: var(--shadow-lg); overflow: hidden;
}
.preview-card-header {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 18px 24px;
  border-bottom: 1px solid #e4edf5;
  background: linear-gradient(to bottom, #fcfeff, #f7fbfe);
  flex-wrap: wrap;
}
.preview-card-header h2 { margin: 0; font-size: 1.2rem; color: #122b46; }
.preview-card-header p { margin: 4px 0 0; font-size: 0.88rem; color: var(--text-soft); }
.preview-actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.preview-card-body { padding: 20px; display: flex; flex-direction: column; align-items: center; }

.canvas-frame {
  width: 100%;
  background: linear-gradient(160deg, #f6fafd 0%, #eef4f8 100%);
  border: 1px solid #dce8f2; border-radius: var(--r-lg);
  padding: 18px; display: flex; justify-content: center; align-items: flex-start;
  min-height: 420px; overflow: auto;
}
#mainCanvas {
  display: block; background: #fff;
  border: 1px solid #d2e2ef; border-radius: 8px;
  box-shadow: 0 6px 24px rgba(20,50,80,0.09);
  max-width: 100%; height: auto;
}

/* ─── RESPONSIVE ──────────────────────────────────────────────────────────── */
@media (max-width: 1100px) { .app-main { grid-template-columns: 270px minmax(0,1fr); } }
@media (max-width: 860px) {
  .app-main { grid-template-columns: 1fr; padding: 16px; gap: 16px; }
  .settings-panel { position: static; max-height: none; }
  .app-header { grid-template-columns: auto 1fr; padding: 14px 16px; }
  .app-header-right { display: none; }
}
@media (max-width: 480px) {
  .preview-card-header { flex-direction: column; align-items: flex-start; }
  .canvas-frame { min-height: 300px; padding: 10px; }
  .app-header { grid-template-columns: 1fr; }
}

/* ─── UITLEG KNOP ────────────────────────────────────────────────────────── */
.uitleg-btn {
  background: #1a8a4a; color: #fff; border: none;
  border-radius: var(--r-md); padding: 7px 14px;
  font-weight: 700; font-size: 0.82rem; gap: 6px;
  box-shadow: 0 3px 10px rgba(20,120,60,0.25);
  white-space: nowrap; flex-shrink: 0;
}
.uitleg-btn:hover { background: #147040; transform: translateY(-1px); }

/* ─── MODAL ───────────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(15,30,50,0.45);
  z-index: 1000; display: flex; align-items: center; justify-content: center;
  padding: 20px; backdrop-filter: blur(2px);
}
.modal-box {
  background: #fff; border-radius: 20px;
  box-shadow: 0 24px 60px rgba(10,30,60,0.22);
  width: 100%; max-width: 580px; max-height: 85vh;
  display: flex; flex-direction: column; overflow: hidden;
}
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 24px 16px; border-bottom: 1px solid var(--line);
  background: linear-gradient(to bottom, #f8fbfe, #f3f7fc); flex-shrink: 0;
}
.modal-header h2 { margin: 0; font-size: 1.1rem; color: var(--text); }
.modal-close-btn {
  background: #f0f4f8; border: 1px solid var(--line); border-radius: 8px;
  width: 34px; height: 34px; padding: 0; color: var(--text-soft); flex-shrink: 0;
}
.modal-close-btn:hover { background: #e4edf5; color: var(--text); }
.modal-body {
  padding: 20px 24px; overflow-y: auto; flex: 1;
  scrollbar-width: thin; scrollbar-color: #c5d8ed transparent;
}
.modal-body::-webkit-scrollbar { width: 5px; }
.modal-body::-webkit-scrollbar-thumb { background: #c5d8ed; border-radius: 99px; }
.info-section { margin-bottom: 16px; padding-bottom: 16px; border-bottom: 1px solid #eef3f8; }
.info-section:last-child { margin-bottom: 0; padding-bottom: 0; border-bottom: none; }
.info-section h3 { margin: 0 0 6px; font-size: 0.95rem; color: var(--text); }
.info-section p, .info-section ul { margin: 0; font-size: 0.88rem; color: var(--text-soft); line-height: 1.6; }
.info-section ul { padding-left: 18px; }
.info-section ul li { margin-bottom: 3px; }
.modal-footer { padding: 14px 24px 18px; border-top: 1px solid var(--line); display: flex; justify-content: flex-end; flex-shrink: 0; }
/* ─── BEWERK & KLAAR KNOPPEN (in header) ───────────────────────────────── */
.bewerk-btn {
  background: var(--accent-soft); color: var(--accent);
  border: 1.5px solid #f5c97a;
  border-radius: var(--r-md); padding: 10px 18px;
  font-weight: 700; font-size: 0.88rem;
  white-space: nowrap;
}
.bewerk-btn:hover { background: #ffe8c2; border-color: var(--accent); }

.klaar-btn {
  background: var(--accent); color: #fff; border: none;
  border-radius: var(--r-md); padding: 10px 18px;
  font-weight: 700; font-size: 0.88rem;
  box-shadow: 0 3px 10px rgba(230,126,0,0.25);
  white-space: nowrap;
}
.klaar-btn:hover { background: #c96d00; transform: translateY(-1px); }