/* ===== Design tokens ===== */
:root {
  --bg: #F4F6F5;
  --surface: #FFFFFF;
  --surface-2: #EDF0EE;
  --border: #DCE2DE;
  --text: #1E2422;
  --text-soft: #55625A;
  --text-faint: #8B968E;

  --accent: #2E6E7E;
  --accent-soft: #DEEAEC;
  --accent-contrast: #FFFFFF;

  --success: #2E7D4F;
  --success-soft: #DDEEE2;
  --danger: #B3402C;
  --danger-soft: #F5E0DA;
  --warning: #A8701A;
  --warning-soft: #F2E5CB;

  --shadow: 0 1px 2px rgba(20, 30, 26, 0.06), 0 8px 24px rgba(20, 30, 26, 0.08);
  --radius: 10px;
  --radius-sm: 6px;

  --font-body: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "SFMono-Regular", Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14181A;
    --surface: #1C2224;
    --surface-2: #232A2C;
    --border: #313A3C;
    --text: #E8ECEA;
    --text-soft: #ADB8B3;
    --text-faint: #798682;

    --accent: #7EC0CE;
    --accent-soft: #203236;
    --accent-contrast: #0C1416;

    --success: #7FCB9C;
    --success-soft: #1D3226;
    --danger: #E4917C;
    --danger-soft: #372420;
    --warning: #E3B563;
    --warning-soft: #362B18;

    --shadow: 0 1px 2px rgba(0,0,0,0.3), 0 8px 24px rgba(0,0,0,0.35);
  }
}
:root[data-theme="dark"] {
  --bg: #14181A;
  --surface: #1C2224;
  --surface-2: #232A2C;
  --border: #313A3C;
  --text: #E8ECEA;
  --text-soft: #ADB8B3;
  --text-faint: #798682;

  --accent: #7EC0CE;
  --accent-soft: #203236;
  --accent-contrast: #0C1416;

  --success: #7FCB9C;
  --success-soft: #1D3226;
  --danger: #E4917C;
  --danger-soft: #372420;
  --warning: #E3B563;
  --warning-soft: #362B18;

  --shadow: 0 1px 2px rgba(0,0,0,0.3), 0 8px 24px rgba(0,0,0,0.35);
}

/* ===== Reset & base ===== */
* { box-sizing: border-box; }
html { color-scheme: light dark; }
:root[data-theme="light"] { color-scheme: light; }
:root[data-theme="dark"] { color-scheme: dark; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
}

a { color: var(--accent); }
h1, h2, h3 { line-height: 1.2; text-wrap: balance; }

.icon {
  width: 1em;
  height: 1em;
  vertical-align: -0.15em;
  flex-shrink: 0;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* ===== Skip link ===== */
.skip-link {
  position: absolute;
  left: 8px;
  top: -48px;
  background: var(--accent);
  color: var(--accent-contrast);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  z-index: 200;
  transition: top 0.15s ease;
  text-decoration: none;
  font-weight: 600;
}
.skip-link:focus { top: 8px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ===== Focus visibility ===== */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible,
.avatar-btn:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

/* ===== Topbar (theme/lang/logout) ===== */
.topbar {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 20px 0;
}
.topbar-narrow { max-width: 560px; }
.topbar-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-soft);
  border-radius: var(--radius-sm);
  padding: 7px 11px;
  font-size: 13px;
  cursor: pointer;
  text-decoration: none;
  font-family: inherit;
}
.topbar-btn:hover { color: var(--text); border-color: var(--accent); }
.topbar-btn .icon-moon { display: none; }
:root[data-theme="dark"] .topbar-btn .icon-sun { display: none; }
:root[data-theme="dark"] .topbar-btn .icon-moon { display: inline; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .topbar-btn .icon-sun { display: none; }
  :root:not([data-theme="light"]) .topbar-btn .icon-moon { display: inline; }
}

/* ===== Page shells ===== */
.page-wide {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 20px 60px;
}
.page-center {
  min-height: calc(100vh - 60px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.container {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.container-header {
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
  padding: 22px 28px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.container-header h1 { margin: 0; font-size: 1.7rem; }
.container-body { padding: 28px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 36px;
  width: 100%;
  max-width: 460px;
}
.card.wide { max-width: 560px; }
.card h1 { text-align: center; font-size: 1.7rem; margin: 0 0 6px; display: flex; align-items: center; justify-content: center; gap: 10px; }
.card .subtitle { text-align: center; color: var(--text-soft); margin: 0 0 26px; }

/* ===== Forms ===== */
.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 0.92rem; }
.field .optional { font-weight: 400; color: var(--text-faint); font-size: 0.85em; }
.field .hint { font-size: 0.85rem; color: var(--text-faint); margin-top: 5px; }

.input, select.input {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font-size: 1rem;
  font-family: inherit;
}
.input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

.checkbox-row { display: flex; align-items: center; gap: 8px; margin-top: 8px; }
.checkbox-row input { width: 18px; height: 18px; accent-color: var(--accent); }
.checkbox-row label { font-weight: 500; margin: 0; }

.error-banner {
  background: var(--danger-soft);
  color: var(--danger);
  border: 1px solid var(--danger);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.94rem;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 11px 20px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  font-family: inherit;
  line-height: 1.2;
}
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn-block { width: 100%; }
.btn-primary { background: var(--accent); color: var(--accent-contrast); }
.btn-primary:hover:not(:disabled) { filter: brightness(1.08); }
.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn-secondary:hover { border-color: var(--text-faint); }
.btn-success { background: var(--success); color: var(--accent-contrast); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-warning { background: var(--warning); color: #2a1c05; }
.btn-sm { padding: 7px 13px; font-size: 0.85rem; }
.btn-link {
  background: none; border: none; color: var(--accent); font-weight: 600;
  cursor: pointer; padding: 0; font-family: inherit; font-size: inherit; text-decoration: underline;
}

.actions-row { display: flex; flex-wrap: wrap; gap: 10px; }
.actions-row.center { justify-content: center; }

/* ===== Session grid & cards ===== */
.section { margin-bottom: 36px; }
.section-title {
  display: flex; align-items: center; gap: 9px;
  font-size: 1.15rem; margin: 0 0 18px;
  padding-bottom: 10px; border-bottom: 2px solid var(--accent);
  color: var(--text);
}

.toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-bottom: 18px; }
.searchbar { position: relative; flex: 1; min-width: 220px; }
.searchbar .icon { position: absolute; left: 13px; top: 50%; transform: translateY(-50%); color: var(--text-faint); }
.searchbar input { padding-left: 38px; }

.sessions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 18px;
}
.session-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
}
.session-card.is-active { border-left: 4px solid var(--success); }
.session-card.is-expired { border-left: 4px solid var(--danger); }
.session-card .sc-head { padding: 16px 18px 12px; border-bottom: 1px solid var(--border); }
.session-card h3 { margin: 0 0 8px; font-size: 1.15rem; word-break: break-word; }
.sc-meta-row { display: flex; justify-content: space-between; align-items: center; gap: 8px; flex-wrap: wrap; }
.pill {
  font-size: 0.78rem; padding: 3px 10px; border-radius: 999px;
  background: var(--surface-2); color: var(--text-soft);
  display: inline-flex; align-items: center; gap: 5px; font-weight: 600;
  vertical-align: middle;
}
.pill-guest { background: var(--accent-soft); color: var(--accent); margin-left: 8px; }
.pill .icon { width: 0.9em; height: 0.9em; }
.badge { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.04em; padding: 3px 10px; border-radius: 999px; font-weight: 700; display: inline-flex; align-items: center; gap: 5px; }
.badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.badge-active { background: var(--success-soft); color: var(--success); }
.badge-expired { background: var(--danger-soft); color: var(--danger); }

.sc-details { padding: 12px 18px; font-size: 0.88rem; color: var(--text-soft); }
.sc-details p { margin: 4px 0; }
.sc-details strong { color: var(--text); }
.sc-details .countdown-soon { color: var(--warning); font-weight: 600; }

.sc-actions { display: flex; flex-wrap: wrap; gap: 8px; padding: 14px 18px; background: var(--surface-2); border-top: 1px solid var(--border); }
.sc-actions form { flex: 1; min-width: 100px; }
.sc-actions .btn { flex: 1; min-width: 100px; }

.empty-state { text-align: center; padding: 60px 20px; color: var(--text-soft); }
.empty-state .icon { width: 44px; height: 44px; margin-bottom: 16px; color: var(--text-faint); }
.empty-state h3 { margin: 0 0 8px; color: var(--text); }

/* ===== Pagination ===== */
.pagination { display: flex; align-items: center; justify-content: center; gap: 6px; margin-top: 22px; }
.pagination .btn-sm { padding: 8px 12px; }
.pagination .status { color: var(--text-faint); font-size: 0.85rem; padding: 0 8px; }

/* ===== Modal ===== */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(10, 14, 12, 0.55);
  display: none; align-items: center; justify-content: center; z-index: 1000; padding: 20px;
}
.modal-backdrop.open { display: flex; }
.modal {
  background: var(--surface); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 26px; width: 100%; max-width: 420px; position: relative;
}
.modal h3 { margin: 0 0 10px; }
.modal p { color: var(--text-soft); margin: 0 0 18px; }
.modal-close {
  position: absolute; top: 14px; right: 14px; background: none; border: none;
  color: var(--text-faint); cursor: pointer; padding: 6px; border-radius: var(--radius-sm);
}
.modal-close:hover { color: var(--text); background: var(--surface-2); }

/* ===== Flash / toast ===== */
.flash {
  display: flex; align-items: center; gap: 10px;
  background: var(--success-soft); color: var(--success);
  border: 1px solid var(--success); border-radius: var(--radius-sm);
  padding: 12px 16px; margin-bottom: 18px; font-size: 0.92rem;
}
.flash.flash-info { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); }

/* ===== Avatar picker ===== */
.avatar-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(44px, 1fr));
  gap: 6px; margin-top: 8px;
}
.avatar-btn {
  display: flex; align-items: center; justify-content: center;
  padding: 8px; border: 2px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface); cursor: pointer; font-size: 19px; min-height: 42px;
}
input[type="radio"]:checked + .avatar-btn { border-color: var(--accent); background: var(--accent-soft); }
input[type="radio"] { position: absolute; opacity: 0; width: 1px; height: 1px; }
input[type="radio"]:focus-visible + .avatar-btn { outline: 3px solid var(--accent); outline-offset: 2px; }

/* ===== Dropzone ===== */
.dropzone {
  position: relative;
  border: 2px dashed var(--accent);
  border-radius: var(--radius);
  padding: 34px 18px;
  text-align: center;
  background: var(--accent-soft);
  cursor: pointer;
  margin-bottom: 6px;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: var(--text-soft);
}
.dropzone .icon { width: 28px; height: 28px; color: var(--accent); }
.dropzone.is-dragover { background: var(--accent); color: var(--accent-contrast); }
.dropzone.is-dragover .icon { color: var(--accent-contrast); }
.dropzone.has-files { border-style: solid; border-color: var(--success); }
.dropzone input[type="file"] { position: absolute; width: 1px; height: 1px; opacity: 0; }
.file-list { list-style: none; margin: 10px 0 0; padding: 0; text-align: left; width: 100%; }
.file-list li {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 7px 10px; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); font-size: 0.85rem; margin-bottom: 6px; color: var(--text);
}
.file-list .file-remove { background: none; border: none; color: var(--text-faint); cursor: pointer; padding: 2px; }
.file-list .file-remove:hover { color: var(--danger); }
.field-error { color: var(--danger); font-size: 0.85rem; margin-top: 8px; display: none; }
.field-error.visible { display: block; }

/* ===== Progress bar ===== */
.progress-wrap { display: none; margin: 14px 0 4px; }
.progress-wrap.visible { display: block; }
.progress-track { height: 8px; border-radius: 999px; background: var(--surface-2); overflow: hidden; }
.progress-fill { height: 100%; background: var(--accent); width: 0%; transition: width 0.15s ease; }
.progress-label { font-size: 0.85rem; color: var(--text-soft); margin-top: 6px; text-align: center; }

/* ===== Formats box / info box ===== */
.info-box {
  background: var(--accent-soft); border: 1px solid var(--accent);
  border-radius: var(--radius-sm); padding: 16px 18px; margin-top: 20px; font-size: 0.9rem;
}
.info-box h3 { margin: 0 0 8px; font-size: 0.98rem; display: flex; align-items: center; gap: 8px; color: var(--text); }
.info-box ul { margin: 8px 0 0 20px; padding: 0; color: var(--text-soft); }
.info-box li { margin-bottom: 6px; }
.format-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0; }
.format-tag { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 3px 10px; font-size: 0.8rem; font-family: var(--font-mono); }

.instructions-box {
  background: var(--warning-soft); border: 1px solid var(--warning);
  border-radius: var(--radius-sm); padding: 16px 18px; margin-top: 20px; text-align: left; font-size: 0.9rem;
}
.instructions-box h3 { margin: 0 0 8px; color: var(--text); display: flex; align-items: center; gap: 8px; }
.instructions-box ul { margin: 8px 0 0 20px; padding: 0; color: var(--text-soft); }
.instructions-box li { margin-bottom: 6px; }

/* ===== QR page ===== */
.qr-box { margin: 22px 0; padding: 20px; background: var(--surface-2); border-radius: var(--radius); display: flex; flex-direction: column; align-items: center; }
.qr-box img { max-width: 240px; width: 100%; height: auto; border-radius: 6px; display: block; }
.qr-image-btn {
  border: none; background: none; padding: 0; cursor: zoom-in; border-radius: 6px;
  display: block; line-height: 0;
}
.qr-image-btn:hover img { opacity: 0.9; }
.qr-fullscreen-img { max-width: min(90vw, 480px); width: 100%; background: #fff; padding: 24px; border-radius: 14px; }
.token-box {
  background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 12px 14px; margin: 14px 0; font-family: var(--font-mono); font-size: 0.85rem; word-break: break-all;
}
.copy-row { display: flex; gap: 8px; align-items: stretch; margin: 14px 0; }
.copy-row input { flex: 1; font-family: var(--font-mono); font-size: 0.85rem; }
.copy-feedback { font-size: 0.82rem; color: var(--success); margin-top: 6px; height: 1em; }

/* ===== Success page ===== */
.success-icon { width: 56px; height: 56px; color: var(--success); margin: 0 auto 14px; }
.success-banner {
  background: var(--success-soft); border: 1px solid var(--success); color: var(--success);
  border-radius: var(--radius-sm); padding: 14px; margin: 18px 0; font-weight: 700; text-align: center;
  display: flex; align-items: center; justify-content: center; gap: 8px;
}

/* ===== Table (session file list) ===== */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border); }
table.data { width: 100%; border-collapse: collapse; background: var(--surface); font-size: 0.92rem; }
table.data th, table.data td { padding: 12px 14px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: middle; }
table.data thead th { background: var(--surface-2); font-weight: 700; white-space: nowrap; }
table.data tbody tr:hover { background: var(--surface-2); }
table.data tbody tr:last-child td { border-bottom: none; }
.file-preview { display: flex; flex-direction: column; align-items: center; gap: 6px; text-align: center; }
.file-thumb { width: 56px; height: 56px; object-fit: cover; border-radius: var(--radius-sm); cursor: pointer; box-shadow: var(--shadow); }
.file-icon-fallback { width: 40px; height: 40px; color: var(--text-faint); }
.file-name { font-size: 0.78rem; color: var(--text-soft); max-width: 160px; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.file-type-tag { text-transform: uppercase; font-size: 0.72rem; background: var(--surface-2); border: 1px solid var(--border); padding: 2px 8px; border-radius: var(--radius-sm); font-family: var(--font-mono); }
.row-actions { display: flex; gap: 10px; align-items: center; }
.link-btn { display: inline-flex; align-items: center; gap: 5px; color: var(--accent); text-decoration: none; font-weight: 600; background: none; border: none; cursor: pointer; font-family: inherit; font-size: inherit; padding: 0; }
.link-btn.danger { color: var(--danger); }
.link-btn:hover { text-decoration: underline; }
.no-rows { text-align: center; color: var(--text-soft); font-style: italic; padding: 50px; }
.no-rows .icon { width: 40px; height: 40px; display: block; margin: 0 auto 16px; color: var(--text-faint); }

.bulkbar {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 10px 14px; margin-bottom: 14px; font-size: 0.88rem;
}
.bulkbar .count { color: var(--text-soft); }

/* ===== Image preview modal ===== */
.image-modal-backdrop {
  display: none; position: fixed; inset: 0; z-index: 1000; background: rgba(0,0,0,0.88);
  align-items: center; justify-content: center; padding: 20px;
}
.image-modal-backdrop.open { display: flex; }
.image-modal-inner { position: relative; max-width: 92vw; max-height: 90vh; display: flex; flex-direction: column; align-items: center; }
.image-modal-inner img { max-width: 100%; max-height: 75vh; object-fit: contain; border-radius: 8px; box-shadow: 0 10px 30px rgba(0,0,0,0.5); }
.image-caption { margin-top: 14px; color: #fff; background: rgba(0,0,0,0.6); padding: 8px 18px; border-radius: 999px; font-size: 0.9rem; }
.image-modal-actions { margin-top: 14px; display: flex; gap: 10px; }
.image-modal-close {
  position: absolute; top: -44px; right: 0; color: #fff; background: rgba(255,255,255,0.15);
  border: none; border-radius: 50%; width: 38px; height: 38px; display: flex; align-items: center; justify-content: center; cursor: pointer;
}
.image-modal-close:hover { background: rgba(255,255,255,0.3); }

/* ===== Error page ===== */
.error-page-icon { width: 52px; height: 52px; color: var(--danger); margin: 0 auto 16px; display: block; }

/* ===== Landing page ===== */
.hero {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 8px;
  text-align: center;
}
.hero-icon {
  width: 30px; height: 30px; color: var(--accent);
  background: var(--accent-soft); border-radius: 999px; padding: 14px;
  margin: 0 auto 22px;
}
.hero .eyebrow {
  font-size: 0.8rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--accent); margin: 0 0 14px;
}
.hero h1 { font-size: clamp(1.9rem, 4vw, 2.6rem); margin: 0 0 16px; line-height: 1.15; }
.hero .subheading { font-size: 1.08rem; color: var(--text-soft); max-width: 56ch; margin: 0 auto 30px; }

.landing-section {
  max-width: 880px;
  margin: 56px auto 0;
  padding: 0 24px;
}
.landing-section:last-of-type { padding-bottom: 60px; }
.landing-section h2 {
  text-align: center; font-size: 1.3rem; margin: 0 0 28px;
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}
.step-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px 20px; box-shadow: var(--shadow);
}
.step-card .step-num {
  font-family: var(--font-mono, inherit);
  font-size: 0.78rem; font-weight: 700; color: var(--accent);
  background: var(--accent-soft); display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 26px; border-radius: 50%; margin-bottom: 14px;
}
.step-card h3 { margin: 0 0 8px; font-size: 1.02rem; }
.step-card p { margin: 0; color: var(--text-soft); font-size: 0.92rem; }

.feature-list {
  list-style: none; margin: 0 auto; padding: 0; max-width: 480px;
  display: flex; flex-direction: column; gap: 14px;
}
.feature-list li {
  display: flex; align-items: flex-start; gap: 12px;
  font-size: 0.96rem; color: var(--text);
}
.feature-list .icon { color: var(--success); flex-shrink: 0; margin-top: 3px; }

/* ===== Print (QR page) ===== */
.print-only { display: none; }
@media print {
  .print-only { display: block; }
  body * { visibility: hidden; }
  .print-area, .print-area * { visibility: visible; }
  .print-area {
    position: absolute; inset: 0; display: flex; flex-direction: column;
    align-items: center; justify-content: center; background: #fff; color: #000;
  }
  .print-area img { max-width: 320px; }
  .no-print { display: none !important; }
}

/* ===== Responsive ===== */
@media (max-width: 720px) {
  .container-body { padding: 20px; }
  .container-header { padding: 18px 20px; }
  .sessions-grid { grid-template-columns: 1fr; }
  .sc-actions .btn { min-width: auto; }
  .card { padding: 26px 20px; }
}