/* =====================================================
   CertiFlow – app.css
   Stack: plain CSS + Google Fonts + Font Awesome 6
   Themes: dark (default) + light via [data-theme="light"]
   ===================================================== */

/* ── Dark theme (default) CSS variables ── */
:root,
[data-theme="dark"] {
  --bg-root:      #020817;
  --bg-surface:   #0f172a;
  --bg-card:      #1e293b;
  --border:       #334155;
  --border-light: #1e293b;
  --text-white:   #f8fafc;
  --text-muted:   #94a3b8;
  --text-dim:     #64748b;
  --input-bg:     #020817;
  --shadow-sm:    0 1px 3px rgba(0,0,0,.4);
  --shadow:       0 4px 16px rgba(0,0,0,.5);
  --shadow-lg:    0 8px 32px rgba(0,0,0,.6);
}

/* ── Light theme CSS variables ── */
[data-theme="light"] {
  --bg-root:      #f1f5f9;
  --bg-surface:   #ffffff;
  --bg-card:      #f8fafc;
  --border:       #cbd5e1;
  --border-light: #e2e8f0;
  --text-white:   #0f172a;
  --text-muted:   #475569;
  --text-dim:     #94a3b8;
  --input-bg:     #ffffff;
  --shadow-sm:    0 1px 3px rgba(0,0,0,.08);
  --shadow:       0 4px 16px rgba(0,0,0,.10);
  --shadow-lg:    0 8px 32px rgba(0,0,0,.12);
}

/* ── Shared colour tokens (same in both themes) ── */
:root {
  --blue:         #2563eb;
  --blue-hover:   #1d4ed8;
  --blue-soft:    rgba(37,99,235,.12);
  --purple:       #7c3aed;
  --purple-hover: #6d28d9;
  --purple-soft:  rgba(124,58,237,.12);
  --emerald:      #059669;
  --emerald-hover:#047857;
  --amber:        #d97706;
  --red:          #dc2626;
  --red-soft:     rgba(220,38,38,.12);
  --radius-sm:    6px;
  --radius:       10px;
  --radius-lg:    16px;
  --radius-xl:    20px;
  --font-sans:    'Inter', system-ui, sans-serif;
  --font-cert:    'Cinzel', serif;
  --font-sig:     'Great Vibes', cursive;
  --transition:   all .18s ease;
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 14px; }
body {
  font-family: var(--font-sans);
  background: var(--bg-root);
  color: var(--text-white);
  line-height: 1.6;
  transition: background .2s ease, color .2s ease;
}
a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }
input, select, textarea, button { font-family: inherit; }

/* ── Utilities ── */
.hidden          { display: none !important; }
.text-right      { text-align: right; }
.text-emerald    { color: var(--emerald); }
.text-amber      { color: var(--amber); }
.text-blue       { color: var(--blue); }
.text-purple     { color: var(--purple); }
.text-red        { color: var(--red); }
.cf-bold         { font-weight: 600; color: var(--text-white); }
.cf-text-muted   { color: var(--text-muted); font-size: .85rem; }
.cf-optional     { color: var(--text-dim); font-weight: 400; font-size: .8rem; }
.cf-required     { color: var(--red); }
.cf-readonly     { opacity: .6; cursor: default; }
.cf-col-span-2   { grid-column: span 2; }

/* ── Layout ── */
.cf-body  { display: flex; flex-direction: column; height: 100vh; overflow: hidden; }
.cf-main  { flex: 1; overflow-y: auto; background: var(--bg-root); }

/* ── Header ── */
.cf-header {
  height: 60px; background: var(--bg-surface); border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 24px; flex-shrink: 0; gap: 16px; z-index: 100;
  transition: background .2s ease, border-color .2s ease;
}
.cf-header-left  { display: flex; align-items: center; gap: 10px; }
.cf-header-right { display: flex; align-items: center; gap: 12px; }

/* ── Logo ── */
.cf-logo-icon {
  height: 34px; width: 34px; background: var(--blue); border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 18px; color: #fff; box-shadow: 0 0 0 4px var(--blue-soft);
}
.cf-logo-icon.lg { height: 52px; width: 52px; font-size: 26px; border-radius: 14px; margin: 0 auto 8px; }
.cf-logo-text { font-weight: 700; font-size: 1.05rem; letter-spacing: .04em; color: var(--text-white); }
.cf-username  { color: var(--text-muted); font-size: .82rem; display: flex; align-items: center; gap: 6px; }
.cf-logout-btn {
  display: flex; align-items: center; gap: 6px;
  color: var(--text-muted); font-size: .82rem; font-weight: 500;
  transition: var(--transition); padding: 5px 10px; border-radius: var(--radius-sm);
}
.cf-logout-btn:hover { color: var(--red); background: var(--red-soft); }

/* ── Theme Toggle Button ── */
.cf-theme-toggle {
  background: none; border: 1px solid var(--border);
  color: var(--text-muted); cursor: pointer;
  width: 34px; height: 34px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: .9rem; transition: var(--transition);
}
.cf-theme-toggle:hover {
  background: var(--bg-card);
  color: var(--text-white);
  border-color: var(--blue);
}
[data-theme="light"] .cf-theme-toggle { background: var(--bg-card); }

/* ── Nav tabs ── */
.cf-nav {
  display: flex; align-items: center; gap: 4px;
  background: var(--bg-root); padding: 4px; border-radius: 12px;
  border: 1px solid var(--border); transition: background .2s ease;
}
.cf-nav-btn {
  display: flex; align-items: center; gap: 6px;
  font-size: .78rem; font-weight: 500; padding: 6px 14px; border-radius: 8px;
  color: var(--text-muted); transition: var(--transition); white-space: nowrap;
}
.cf-nav-btn:hover { color: var(--text-white); background: var(--bg-card); }
.cf-nav-btn.active { background: var(--blue); color: #fff; }
[data-theme="light"] .cf-nav-btn:hover { background: var(--border-light); }

/* ── Badges ── */
.cf-badge {
  font-size: .68rem; font-weight: 600; padding: 2px 10px;
  border-radius: 999px; border: 1px solid transparent; white-space: nowrap;
}
.badge-blue      { background: var(--blue-soft);   color: #2563eb; border-color: rgba(37,99,235,.25); }
.badge-purple    { background: var(--purple-soft);  color: #7c3aed; border-color: rgba(124,58,237,.25); }
[data-theme="dark"] .badge-blue   { color: #60a5fa; }
[data-theme="dark"] .badge-purple { color: #a78bfa; }
.badge-active    { background: rgba(5,150,105,.15);  color: #059669; border-color: rgba(5,150,105,.2);   padding: 2px 10px; border-radius: 999px; font-size:.68rem; font-weight:600; }
.badge-pending   { background: rgba(217,119,6,.15);  color: #d97706; border-color: rgba(217,119,6,.2);   padding: 2px 10px; border-radius: 999px; font-size:.68rem; font-weight:600; }
.badge-suspended { background: rgba(220,38,38,.15);  color: #dc2626; border-color: rgba(220,38,38,.2);   padding: 2px 10px; border-radius: 999px; font-size:.68rem; font-weight:600; }
[data-theme="dark"] .badge-active    { color: #34d399; }
[data-theme="dark"] .badge-pending   { color: #fbbf24; }
[data-theme="dark"] .badge-suspended { color: #f87171; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: .8rem; font-weight: 600; padding: 8px 18px;
  border-radius: var(--radius-sm); border: none; cursor: pointer;
  transition: var(--transition); white-space: nowrap;
}
.btn-primary { background: var(--blue);    color: #fff; box-shadow: 0 2px 12px rgba(37,99,235,.3); }
.btn-primary:hover  { background: var(--blue-hover); }
.btn-purple  { background: var(--purple);  color: #fff; box-shadow: 0 2px 12px rgba(124,58,237,.3); }
.btn-purple:hover   { background: var(--purple-hover); }
.btn-emerald { background: var(--emerald); color: #fff; box-shadow: 0 2px 12px rgba(5,150,105,.3); }
.btn-emerald:hover  { background: var(--emerald-hover); }
.btn-ghost   { background: var(--bg-card); color: var(--text-muted); border: 1px solid var(--border); }
.btn-ghost:hover    { background: var(--border); color: var(--text-white); }
.btn-full    { width: 100%; justify-content: center; }
.btn-icon    { background: none; border: none; cursor: pointer; color: var(--text-dim); padding: 5px 8px; border-radius: var(--radius-sm); transition: var(--transition); }
.btn-icon:hover     { color: var(--red); background: var(--red-soft); }
.btn-text    { background: none; border: none; cursor: pointer; font-size: .8rem; font-weight: 500; transition: var(--transition); }
.btn-text:hover     { text-decoration: underline; }
.btn-text.text-purple { color: var(--purple); }

/* ── Flash Messages ── */
.cf-flash {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 20px; font-size: .82rem; font-weight: 500;
  border-left: 4px solid; position: relative;
}
.cf-flash-success { background: rgba(5,150,105,.1);  color: #059669; border-color: var(--emerald); }
.cf-flash-error   { background: rgba(220,38,38,.1);  color: #dc2626; border-color: var(--red); }
[data-theme="dark"] .cf-flash-success { color: #34d399; }
[data-theme="dark"] .cf-flash-error   { color: #f87171; }
.cf-flash-close   { margin-left: auto; background: none; border: none; cursor: pointer; color: inherit; font-size: 1.1rem; opacity: .7; }
.cf-flash-close:hover { opacity: 1; }

/* ── Toast notification ── */
#cf-toast {
  position: fixed; top: 80px; right: 28px; z-index: 9999;
  background: var(--bg-card); border: 1px solid var(--border);
  color: var(--text-white); padding: 12px 20px; border-radius: var(--radius);
  font-size: .82rem; font-weight: 500; box-shadow: var(--shadow-lg);
  display: flex; align-items: center; gap: 10px;
  animation: slideUp .25s ease;
}
#cf-toast.toast-success { border-left: 4px solid var(--emerald); }
#cf-toast.toast-error   { border-left: 4px solid var(--red); }
@keyframes slideUp { from { opacity: 0; transform: translateY(-16px); } to   { opacity: 1; transform: translateY(0); }
}

/* ── Page Wrapper ── */
.cf-page-wrap   { padding: 32px; display: flex; flex-direction: column; gap: 24px; }
.cf-page-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; }
.cf-page-title  { font-size: 1.4rem; font-weight: 700; color: var(--text-white); }
.cf-page-sub    { font-size: .8rem; color: var(--text-muted); margin-top: 2px; }

/* ── Stats Grid ── */
.cf-stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.cf-stat-card  { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; transition: background .2s ease; }
.cf-stat-label { font-size: .75rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: .05em; }
.cf-stat-value { font-size: 1.8rem; font-weight: 700; color: var(--text-white); margin-top: 6px; }
@media (max-width: 900px) { .cf-stats-grid { grid-template-columns: repeat(2, 1fr); } }

/* ── Card ── */
.cf-card        { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: background .2s ease; }
.cf-card-header { padding: 14px 20px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.cf-card-title  { font-size: .9rem; font-weight: 600; color: var(--text-white); }

/* ── Search ── */
.cf-search-wrap { position: relative; }
.cf-search-wrap > i { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); color: var(--text-dim); font-size: .8rem; }
.cf-search-input { padding-left: 30px !important; width: 220px; }

/* ── Table ── */
.cf-table-wrap { overflow-x: auto; }
.cf-table { width: 100%; border-collapse: collapse; font-size: .8rem; color: var(--text-muted); text-align: left; }
.cf-table thead { background: var(--bg-root); border-bottom: 1px solid var(--border); }
.cf-table thead th { padding: 10px 14px; font-size: .7rem; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--text-dim); }
.cf-table tbody tr { border-bottom: 1px solid var(--border-light); transition: background .12s; }
.cf-table tbody tr:hover { background: rgba(0,0,0,.03); }
[data-theme="dark"] .cf-table tbody tr:hover { background: rgba(255,255,255,.025); }
.cf-table td { padding: 10px 14px; vertical-align: middle; }
.cf-school-thumb { width: 36px; height: 36px; object-fit: cover; border-radius: var(--radius-sm); border: 1px solid var(--border); }
.cf-school-thumb-placeholder { width: 36px; height: 36px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; color: var(--text-dim); font-size: .9rem; }
.cf-code { font-family: 'Courier New', monospace; font-size: .75rem; color: var(--text-muted); background: var(--bg-root); padding: 2px 6px; border-radius: 4px; }
.cf-status-badge { display: inline-block; }
.cf-pill { display: inline-block; font-size: .68rem; font-weight: 600; padding: 2px 8px; border-radius: 999px; }
.cf-pill-blue   { background: var(--blue-soft);  color: var(--blue); }
.cf-pill-purple { background: var(--purple-soft); color: var(--purple); }
[data-theme="dark"] .cf-pill-blue   { color: #60a5fa; }
[data-theme="dark"] .cf-pill-purple { color: #a78bfa; }

/* ── Empty State ── */
.cf-empty-state { padding: 48px; text-align: center; color: var(--text-dim); }
.cf-empty-state i { font-size: 2.5rem; margin-bottom: 12px; display: block; }
.cf-empty-state p { font-size: .85rem; }

/* ── Forms ── */
.cf-field     { display: flex; flex-direction: column; gap: 5px; }
.cf-label     { font-size: .75rem; font-weight: 600; color: var(--text-muted); letter-spacing: .03em; }
.cf-input {
  background: var(--input-bg); border: 1px solid var(--border);
  color: var(--text-white); border-radius: var(--radius-sm);
  padding: 9px 12px; font-size: .82rem; outline: none; width: 100%;
  transition: border-color .15s, background .2s ease;
}
.cf-input:focus   { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(37,99,235,.15); }
.cf-input::placeholder { color: var(--text-dim); }
.cf-textarea      { resize: vertical; min-height: 80px; }
.cf-field-error   { font-size: .72rem; color: var(--red); min-height: 14px; }
.cf-form-grid-2   { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }


/* Date input - fix native calendar picker in dark theme */
input[type="date"].cf-input { cursor:pointer; color-scheme:dark; }
[data-theme="light"] input[type="date"].cf-input { color-scheme:light; }
input[type="date"].cf-input::-webkit-calendar-picker-indicator { filter:invert(1) brightness(1.4); cursor:pointer; opacity:.8; padding:2px; }
input[type="date"].cf-input::-webkit-calendar-picker-indicator:hover { opacity:1; background:var(--blue-soft); border-radius:3px; }
input[type="date"].cf-input::-webkit-datetime-edit { color:var(--text-white); }
input[type="date"].cf-input::-webkit-datetime-edit-fields-wrapper { color:var(--text-white); }
/* ── Checkbox grid ── */
.cf-checkbox-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.cf-checkbox-label { display: flex; align-items: center; gap: 8px; font-size: .8rem; color: var(--text-muted); cursor: pointer; padding: 6px 10px; border: 1px solid var(--border); border-radius: var(--radius-sm); transition: var(--transition); }
.cf-checkbox-label:hover { border-color: var(--purple); color: var(--text-white); }
.cf-checkbox-label input[type=checkbox] { accent-color: var(--purple); width: 14px; height: 14px; cursor: pointer; }

/* ── File Upload Zone ── */
.cf-upload-zone {
  border: 2px dashed var(--border); border-radius: var(--radius);
  padding: 24px; text-align: center; cursor: pointer;
  transition: var(--transition); position: relative; background: var(--input-bg);
}
.cf-upload-zone:hover, .cf-upload-zone.drag-over { border-color: var(--blue); background: var(--blue-soft); }
.cf-upload-icon { font-size: 1.8rem; color: var(--text-dim); margin-bottom: 8px; display: block; }
.cf-upload-text { font-size: .8rem; color: var(--text-muted); font-weight: 500; }
.cf-upload-hint { font-size: .72rem; color: var(--text-dim); margin-top: 4px; }
.cf-file-hidden { position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%; }
.cf-image-preview { max-height: 80px; max-width: 100%; object-fit: contain; margin: 8px auto 0; border-radius: var(--radius-sm); }

/* ── Input with icon ── */
.cf-input-wrap { position: relative; }
.cf-input-icon { position: absolute; left: 11px; top: 50%; transform: translateY(-50%); color: var(--text-dim); font-size: .8rem; pointer-events: none; }
.cf-input-wrap .cf-input { padding-left: 34px; }
.cf-pw-toggle { position: absolute; right: 10px; top: 50%; transform: translateY(-50%); background: none; border: none; color: var(--text-dim); cursor: pointer; padding: 4px; transition: color .15s; }
.cf-pw-toggle:hover { color: var(--text-white); }

/* ── Modal ── */
.cf-modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.7);
  backdrop-filter: blur(4px); display: flex; align-items: center;
  justify-content: center; z-index: 1000; padding: 20px;
}
[data-theme="light"] .cf-modal-overlay { background: rgba(0,0,0,.4); }
.cf-modal {
  background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); width: 100%; max-width: 540px;
  max-height: 90vh; display: flex; flex-direction: column;
  box-shadow: var(--shadow-lg); animation: modalIn .2s ease;
}
@keyframes modalIn {
  from { opacity: 0; transform: scale(.95) translateY(-12px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}
.cf-modal-header { display: flex; align-items: center; justify-content: space-between; padding: 18px 22px 14px; border-bottom: 1px solid var(--border); }
.cf-modal-header h3 { font-size: 1rem; font-weight: 700; color: var(--text-white); }
.cf-modal-close { background: none; border: none; color: var(--text-dim); cursor: pointer; font-size: 1.1rem; padding: 4px 6px; border-radius: var(--radius-sm); transition: var(--transition); }
.cf-modal-close:hover { color: var(--red); background: var(--red-soft); }
.cf-modal-body   { padding: 20px 22px; overflow-y: auto; flex: 1; display: flex; flex-direction: column; gap: 14px; }
.cf-modal-footer { padding: 14px 22px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; }

/* ── Roles Grid ── */
.cf-roles-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.cf-col-span-3 { grid-column: span 3; }
.cf-role-card  { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; display: flex; flex-direction: column; gap: 12px; transition: var(--transition); }
.cf-role-card:hover { border-color: var(--purple); box-shadow: 0 0 0 1px var(--purple-soft); }
.cf-role-card-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
.cf-role-title  { font-size: .9rem; font-weight: 700; color: var(--text-white); }
.cf-role-desc   { font-size: .78rem; color: var(--text-muted); line-height: 1.55; flex: 1; }
.cf-permissions-wrap { display: flex; flex-wrap: wrap; gap: 6px; }
.cf-perm-tag { background: var(--bg-card); border: 1px solid var(--border); color: var(--text-muted); font-size: .68rem; font-weight: 600; padding: 2px 8px; border-radius: 999px; text-transform: capitalize; }
.cf-role-card-footer { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--border); padding-top: 10px; }
@media (max-width: 900px) { .cf-roles-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .cf-roles-grid { grid-template-columns: 1fr; } }

/* ── Login Page ── */
.cf-login-page    { align-items: stretch; justify-content: stretch; }
.cf-login-wrapper { flex: 1; display: flex; align-items: center; justify-content: center; padding: 24px; background: var(--bg-root); }
.cf-login-card    { width: 100%; max-width: 420px; background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-xl); padding: 36px; box-shadow: var(--shadow-lg); display: flex; flex-direction: column; gap: 22px; }
.cf-login-logo    { text-align: center; }
.cf-login-title   { font-size: 1.4rem; font-weight: 700; color: var(--text-white); margin-top: 6px; }
.cf-login-sub     { font-size: .75rem; color: var(--text-muted); margin-top: 2px; }
.cf-demo-box      { background: var(--bg-root); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; display: flex; flex-direction: column; gap: 8px; }
.cf-demo-heading  { font-size: .75rem; font-weight: 700; color: var(--text-muted); margin-bottom: 2px; }
.cf-demo-row      { display: flex; justify-content: space-between; align-items: center; font-size: .75rem; color: var(--text-dim); }
code.code-blue    { background: var(--blue-soft); color: var(--blue); padding: 2px 8px; border-radius: 5px; font-size: .75rem; }
code.code-purple  { background: var(--purple-soft); color: var(--purple); padding: 2px 8px; border-radius: 5px; font-size: .75rem; }
[data-theme="dark"] code.code-blue   { color: #60a5fa; }
[data-theme="dark"] code.code-purple { color: #a78bfa; }
.cf-login-form    { display: flex; flex-direction: column; gap: 16px; }

/* ── Login page theme toggle (shown on login, no header) ── */
.cf-login-theme-row { display: flex; justify-content: flex-end; }
.cf-login-theme-btn {
  background: none; border: 1px solid var(--border);
  color: var(--text-muted); cursor: pointer;
  padding: 5px 10px; border-radius: var(--radius-sm);
  font-size: .78rem; display: flex; align-items: center; gap: 6px;
  transition: var(--transition);
}
.cf-login-theme-btn:hover { border-color: var(--blue); color: var(--text-white); }

/* ── Studio layout ── */
.cf-studio-wrap    { display: flex; height: 100%; overflow: hidden; }
.cf-studio-panel   { width: 380px; background: var(--bg-surface); border-right: 1px solid var(--border); display: flex; flex-direction: column; justify-content: space-between; flex-shrink: 0; overflow: hidden; transition: background .2s ease; }
.cf-studio-panel-inner { flex: 1; overflow-y: auto; padding: 24px; display: flex; flex-direction: column; gap: 20px; }
.cf-studio-panel-title { font-size: 1rem; font-weight: 700; color: var(--text-white); }
.cf-studio-panel-sub   { font-size: .75rem; color: var(--text-muted); margin-top: 2px; }
.cf-studio-fields { display: flex; flex-direction: column; gap: 14px; }
.cf-print-btn     { border-radius: 0; padding: 14px; font-size: .85rem; flex-shrink: 0; }
.cf-studio-preview { flex: 1; background: var(--bg-root); display: flex; flex-direction: column; align-items: center; justify-content: flex-start; overflow: auto; padding: 40px; gap: 24px; transition: background .2s ease; }

/* ── Certificate Theme Switcher tabs ── */
.cf-cert-themes { display: flex; gap: 8px; flex-shrink: 0; }
.cf-cert-theme-btn {
  padding: 6px 16px; border-radius: 999px; border: 1px solid var(--border);
  font-size: .75rem; font-weight: 600; cursor: pointer;
  background: var(--bg-card); color: var(--text-muted);
  transition: var(--transition);
}
.cf-cert-theme-btn:hover { border-color: var(--blue); color: var(--text-white); }
.cf-cert-theme-btn.active { background: var(--blue); color: #fff; border-color: var(--blue); }

/* ============================================================
   CERTIFICATE THEMES
   ============================================================ */

/* ── Shared cert base ── */
.cf-cert {
  width: 800px; min-height: 560px; padding: 50px 56px;
  position: relative; box-shadow: var(--shadow-lg);
  display: flex; flex-direction: column; justify-content: space-between;
  flex-shrink: 0; transition: all .3s ease;
}

/* ────────────────────────────────────────────────────────────
   THEME 1 – Classic Gold  (default / original)
   ──────────────────────────────────────────────────────────── */
.cert-theme-classic {
  background: #fdfaf3; color: #1e1a0e;
  border: 12px double #7c5a1e;
}
.cert-theme-classic .cf-cert-border-inner {
  position: absolute; inset: 8px;
  border: 1.5px solid rgba(124,90,30,.3);
  pointer-events: none; border-radius: 2px;
}
.cert-theme-classic .cf-cert-emblem   { background: #7c5a1e; }
.cert-theme-classic .cf-cert-school   { color: #7c5a1e; }
.cert-theme-classic .cf-cert-title    { color: #1e1a0e; }
.cert-theme-classic .cf-cert-divider  { background: #7c5a1e; }
.cert-theme-classic .cf-cert-presented-to { color: #5a5040; }
.cert-theme-classic .cf-cert-student-name {
  border-bottom: 1.5px solid #c0a86e;
  padding: 0 32px 4px;
}
.cert-theme-classic .cf-cert-reason   { color: #5a5040; }
.cert-theme-classic .cf-cert-footer   { border-top: 1px solid rgba(124,90,30,.2); }
.cert-theme-classic .cf-cert-footer-label { color: #7a6a50; }
.cert-theme-classic .cf-cert-seal     { border: 2px solid #7c5a1e; color: #7c5a1e; }
.cert-theme-classic .cf-cert-seal-text { color: #7c5a1e; }
.cert-theme-classic .cf-cert-id       { color: #aaa; }

/* ────────────────────────────────────────────────────────────
   THEME 2 – Modern Blue  (corporate / academic)
   ──────────────────────────────────────────────────────────── */
.cert-theme-modern {
  background: #ffffff; color: #0f172a;
  border: none;
  border-top: 8px solid #2563eb;
  border-bottom: 8px solid #2563eb;
  box-shadow: 0 0 0 1px #e2e8f0, var(--shadow-lg);
}
.cert-theme-modern .cf-cert-border-inner {
  position: absolute; inset: 14px;
  border: 1px solid rgba(37,99,235,.15);
  pointer-events: none; border-radius: 4px;
}
.cert-theme-modern .cf-cert-header::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, #2563eb, #7c3aed);
}
.cert-theme-modern .cf-cert-emblem   { background: #2563eb; }
.cert-theme-modern .cf-cert-school   { color: #2563eb; letter-spacing: .08em; }
.cert-theme-modern .cf-cert-title    { color: #0f172a; font-family: var(--font-cert); }
.cert-theme-modern .cf-cert-divider  { background: linear-gradient(90deg,#2563eb,#7c3aed); width: 100px; height: 3px; }
.cert-theme-modern .cf-cert-presented-to { color: #64748b; }
.cert-theme-modern .cf-cert-student-name {
  color: #2563eb; border-bottom: 2px solid #2563eb;
  padding: 0 24px 4px;
}
.cert-theme-modern .cf-cert-reason   { color: #475569; }
.cert-theme-modern .cf-cert-footer   { border-top: 1px solid #e2e8f0; }
.cert-theme-modern .cf-cert-footer-label { color: #94a3b8; }
.cert-theme-modern .cf-cert-footer-value { color: #0f172a; }
.cert-theme-modern .cf-cert-seal     { border: 2px solid #2563eb; color: #2563eb; background: rgba(37,99,235,.06); }
.cert-theme-modern .cf-cert-seal-text { color: #2563eb; }
.cert-theme-modern .cf-cert-id       { color: #94a3b8; }
.cert-theme-modern .cf-cert-sig-name { color: #2563eb; border-bottom: 1px solid #cbd5e1; }

/* ────────────────────────────────────────────────────────────
   THEME 3 – Elegant Dark  (premium / awards)
   ──────────────────────────────────────────────────────────── */
.cert-theme-elegant {
  background: #0d1117; color: #e2e8f0;
  border: 2px solid #c9a84c;
  position: relative;
}
.cert-theme-elegant::before {
  content: ''; position: absolute;
  inset: 6px; border: 1px solid rgba(201,168,76,.3);
  pointer-events: none;
}
.cert-theme-elegant .cf-cert-border-inner {
  position: absolute; inset: 12px;
  border: 1px solid rgba(201,168,76,.15);
  pointer-events: none;
}
.cert-theme-elegant .cf-cert-header::after {
  content: '';
  display: block; width: 60%; height: 1px;
  background: linear-gradient(90deg, transparent, #c9a84c, transparent);
  margin: 6px auto 0;
}
.cert-theme-elegant .cf-cert-emblem {
  background: transparent;
  border: 2px solid #c9a84c;
  color: #c9a84c;
  font-size: 1.8rem;
}
.cert-theme-elegant .cf-cert-school {
  color: #c9a84c; letter-spacing: .2em; font-size: .7rem;
}
.cert-theme-elegant .cf-cert-title {
  color: #f8fafc;
  font-family: var(--font-cert);
  text-shadow: 0 0 30px rgba(201,168,76,.25);
}
.cert-theme-elegant .cf-cert-divider {
  background: linear-gradient(90deg, transparent, #c9a84c, transparent);
  width: 120px; height: 1px;
}
.cert-theme-elegant .cf-cert-presented-to { color: #94a3b8; font-style: italic; }
.cert-theme-elegant .cf-cert-student-name {
  color: #c9a84c; font-family: var(--font-sig);
  font-size: 2.4rem; font-weight: 400;
  border-bottom: 1px solid rgba(201,168,76,.4);
  padding: 0 32px 4px;
}
.cert-theme-elegant .cf-cert-reason  { color: #94a3b8; }
.cert-theme-elegant .cf-cert-footer  { border-top: 1px solid rgba(201,168,76,.2); }
.cert-theme-elegant .cf-cert-footer-label { color: #64748b; }
.cert-theme-elegant .cf-cert-footer-value { color: #cbd5e1; }
.cert-theme-elegant .cf-cert-seal {
  border: 2px solid #c9a84c; color: #c9a84c;
  background: rgba(201,168,76,.08); border-radius: 50%;
  box-shadow: 0 0 16px rgba(201,168,76,.2);
}
.cert-theme-elegant .cf-cert-seal-text { color: #c9a84c; }
.cert-theme-elegant .cf-cert-id        { color: #475569; }
.cert-theme-elegant .cf-cert-sig-name {
  font-family: var(--font-sig); color: #c9a84c;
  font-size: 1.6rem; font-weight: 400;
  border-bottom: 1px solid rgba(201,168,76,.3);
}

/* ── Shared cert parts (colour-agnostic structure) ── */
.cf-cert-header   { text-align: center; display: flex; flex-direction: column; align-items: center; gap: 8px; position: relative; }
.cf-cert-emblem   { width: 56px; height: 56px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.6rem; margin-bottom: 4px; }
.cf-cert-school   { font-size: .75rem; font-weight: 700; text-transform: uppercase; }
.cf-cert-title    { font-family: var(--font-cert); font-size: 1.9rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; }
.cf-cert-divider  { width: 80px; height: 2px; margin: 6px auto 0; }
.cf-cert-body     { text-align: center; padding: 24px 0; }
.cf-cert-presented-to { font-size: .78rem; font-style: italic; margin-bottom: 10px; }
.cf-cert-student-name { font-size: 2rem; font-weight: 700; display: inline-block; margin-bottom: 14px; }
.cf-cert-reason   { font-size: .8rem; line-height: 1.65; max-width: 500px; margin: 0 auto; }
.cf-cert-footer   { display: flex; justify-content: space-between; align-items: flex-end; padding-top: 18px; }
.cf-cert-footer-col { text-align: center; min-width: 120px; }
.cf-cert-footer-value { font-size: .8rem; font-weight: 600; border-bottom: 1px solid rgba(150,150,150,.3); padding-bottom: 2px; }
.cf-cert-footer-label { font-size: .62rem; text-transform: uppercase; letter-spacing: .1em; margin-top: 4px; }
.cf-cert-seal-col { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.cf-cert-seal     { width: 52px; height: 52px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.4rem; }
.cf-cert-seal-text{ font-size: .58rem; text-transform: uppercase; letter-spacing: .12em; font-weight: 700; }
.cf-cert-id       { font-size: .58rem; margin-top: 2px; }
.cf-cert-sig-name { font-family: var(--font-sig); font-size: 1.5rem; border-bottom: 1px solid rgba(150,150,150,.3); padding-bottom: 2px; }

/* ── Print styles ── */
@media print {
  body * { visibility: hidden; }
  #printable-area, #printable-area * { visibility: visible; }
  #printable-area {
    position: fixed; inset: 0; width: 100%; height: 100%;
    box-shadow: none; padding: 40px;
  }
  .cert-theme-classic { border: 12px double #7c5a1e !important; background: #fdfaf3 !important; }
  .cert-theme-modern  { border-top: 8px solid #2563eb !important; border-bottom: 8px solid #2563eb !important; background: #ffffff !important; }
  .cert-theme-elegant { border: 2px solid #c9a84c !important; background: #0d1117 !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
}

/* ── Scrollbar (webkit) ── */
::-webkit-scrollbar       { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-root); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-dim); }

/* ── Responsive tweaks ── */
@media (max-width: 768px) {
  .cf-header { padding: 0 14px; gap: 10px; }
  .cf-nav    { display: none; }
  .cf-page-wrap { padding: 18px; }
  .cf-stats-grid { grid-template-columns: 1fr 1fr; }
  .cf-studio-wrap { flex-direction: column; }
  .cf-studio-panel { width: 100%; max-height: 45vh; border-right: none; border-bottom: 1px solid var(--border); }
  .cf-studio-preview { padding: 20px; }
  .cf-cert { width: 100%; min-height: auto; padding: 28px; }
  .cf-form-grid-2 { grid-template-columns: 1fr; }
  .cf-col-span-2  { grid-column: span 1; }
}

/* ============================================================
   WIZARD / MULTI-STEP FORM PAGES
   ============================================================ */

/* ── Wizard page header ── */
.cf-wizard-header {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.cf-wizard-back {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: .78rem;
  font-weight: 600;
  color: var(--text-muted);
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  transition: var(--transition);
  white-space: nowrap;
  margin-top: 4px;
}
.cf-wizard-back:hover {
  color: var(--text-white);
  border-color: var(--blue);
  background: var(--blue-soft);
}

/* ── Step indicator bar ── */
.cf-wizard-steps {
  display: flex;
  align-items: center;
  gap: 0;
  max-width: 480px;
}

.cf-wizard-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.cf-wizard-step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .8rem;
  font-weight: 700;
  border: 2px solid var(--border);
  background: var(--bg-surface);
  color: var(--text-dim);
  transition: var(--transition);
}

.cf-wizard-step-label {
  font-size: .7rem;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: .05em;
  transition: var(--transition);
  white-space: nowrap;
}

/* Active step */
.cf-wizard-step.active .cf-wizard-step-num {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
  box-shadow: 0 0 0 4px var(--blue-soft);
}
.cf-wizard-step.active .cf-wizard-step-label {
  color: var(--text-white);
}

/* Completed step */
.cf-wizard-step.done .cf-wizard-step-num {
  background: var(--emerald);
  border-color: var(--emerald);
  color: #fff;
  box-shadow: 0 0 0 4px rgba(5,150,105,.15);
}
.cf-wizard-step.done .cf-wizard-step-label {
  color: var(--emerald);
}
[data-theme="dark"] .cf-wizard-step.done .cf-wizard-step-label {
  color: #34d399;
}

/* Connector line between steps */
.cf-wizard-step-connector {
  flex: 1;
  height: 2px;
  background: var(--border);
  margin: 0 12px;
  margin-bottom: 22px; /* align with step circles */
  border-radius: 2px;
  min-width: 40px;
  max-width: 120px;
  transition: background .3s ease;
}
.cf-wizard-step-connector.active {
  background: linear-gradient(90deg, var(--emerald), var(--blue));
}

/* ── Wizard form card ── */
.cf-wizard-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 20px;
  box-shadow: var(--shadow);
  transition: background .2s ease;
}

.cf-wizard-card-title {
  font-size: .95rem;
  font-weight: 700;
  color: var(--text-white);
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.cf-wizard-card-title i {
  color: var(--blue);
  font-size: 1rem;
}

/* ── Wizard error alert ── */
.cf-wizard-alert-error {
  background: var(--red-soft);
  border: 1px solid rgba(220,38,38,.25);
  border-left: 4px solid var(--red);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  flex-wrap: wrap;
  font-size: .8rem;
  color: var(--red);
}
[data-theme="dark"] .cf-wizard-alert-error {
  color: #f87171;
}
.cf-wizard-alert-error i {
  margin-top: 1px;
  flex-shrink: 0;
}
.cf-wizard-alert-error span {
  display: block;
  width: 100%;
}

/* ── Wizard footer (back / next / submit) ── */
.cf-wizard-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 8px;
  border-top: 1px solid var(--border);
  margin-top: 4px;
  gap: 12px;
}

/* Wizard 3-column form grid */
.cf-wizard-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:18px; margin-bottom:8px; }
.cf-wizard-col-2 { grid-column:span 2; }
.cf-wizard-col-3 { grid-column:span 3; }

/* ── Input error highlight ── */
.cf-input.cf-input-error {
  border-color: var(--red);
}
.cf-input.cf-input-error:focus {
  border-color: var(--red);
  box-shadow: 0 0 0 3px rgba(220,38,38,.15);
}

/* ── Permissions hint text ── */
.cf-wizard-perm-hint {
  font-size: .78rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

/* ── Larger permission checkbox grid ── */
.cf-checkbox-grid-lg {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.cf-checkbox-label-lg {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .82rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
  background: var(--bg-card);
}
.cf-checkbox-label-lg:hover {
  border-color: var(--purple);
  color: var(--text-white);
  background: var(--purple-soft);
}
.cf-checkbox-label-lg input[type=checkbox] {
  accent-color: var(--purple);
  width: 15px;
  height: 15px;
  cursor: pointer;
  flex-shrink: 0;
}
.cf-checkbox-label-lg input[type=checkbox]:checked + .cf-perm-icon {
  color: var(--purple);
}

/* Checked state highlight */
.cf-checkbox-label-lg:has(input:checked) {
  border-color: var(--purple);
  background: var(--purple-soft);
  color: var(--text-white);
}

.cf-perm-icon {
  font-size: .85rem;
  color: var(--text-dim);
  width: 16px;
  text-align: center;
  transition: color .15s;
  flex-shrink: 0;
}

@media (max-width: 600px) {
  .cf-wizard-card      { padding: 20px; }
  .cf-checkbox-grid-lg { grid-template-columns: 1fr; }
  .cf-wizard-steps     { max-width: 100%; }
  .cf-wizard-step-connector { min-width: 20px; }


/* ============================================================
   STUDENT UPLOAD MODULE  — added 2026-07
   ============================================================ */

/* ── Emerald button (Student Upload) ── */
.btn-emerald {
  background: var(--emerald); color: #fff; border: none;
  padding: 8px 18px; border-radius: var(--radius-sm);
  font-size: .82rem; font-weight: 600; cursor: pointer;
  display: inline-flex; align-items: center; gap: 7px;
  transition: var(--transition);
}
.btn-emerald:hover { background: var(--emerald-hover); }

/* ── Section divider ── */
.cf-section-divider {
  height: 1px; background: var(--border);
  margin: 32px 0 28px;
}

/* ── Students section wrapper ── */
.cf-students-section { display: flex; flex-direction: column; gap: 16px; }

.cf-students-header {
  display: flex; justify-content: space-between;
  align-items: flex-start; flex-wrap: wrap; gap: 14px;
}

.cf-section-title {
  font-size: .95rem; font-weight: 700;
  color: var(--text-white); display: flex; align-items: center; gap: 8px;
}

/* ── Search input ── */
.cf-search-wrap {
  position: relative; display: flex; align-items: center;
}
.cf-search-icon {
  position: absolute; left: 10px;
  color: var(--text-dim); font-size: .8rem; pointer-events: none;
}
.cf-search-input { padding-left: 32px !important; width: 220px; }

/* ── Stats chip bar ── */
.cf-student-stats { display: flex; gap: 10px; flex-wrap: wrap; }
.cf-stat-chip {
  background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: 999px; padding: 4px 14px;
  font-size: .78rem; color: var(--text-muted);
  display: flex; align-items: center; gap: 6px;
}
.cf-stat-chip strong { color: var(--text-white); }

/* ── Data table ── */
.cf-table-wrap {
  overflow-x: auto; border-radius: var(--radius);
  border: 1px solid var(--border);
}
.cf-table {
  width: 100%; border-collapse: collapse;
  font-size: .82rem;
}
.cf-table thead th {
  background: var(--bg-card); color: var(--text-muted);
  font-weight: 600; font-size: .75rem; text-transform: uppercase;
  letter-spacing: .04em; padding: 10px 14px; text-align: left;
  white-space: nowrap; border-bottom: 1px solid var(--border);
}
.cf-th-sort { cursor: pointer; user-select: none; }
.cf-th-sort:hover { color: var(--text-white); }
.cf-sort-icon { margin-left: 4px; opacity: .5; font-size: .7rem; }
.cf-table tbody tr {
  border-bottom: 1px solid var(--border-light);
  transition: background .12s;
}
.cf-table tbody tr:last-child { border-bottom: none; }
.cf-table tbody tr:hover { background: var(--bg-card); }
.cf-table td { padding: 10px 14px; color: var(--text-white); vertical-align: middle; }
.cf-table-sm td, .cf-table-sm th { padding: 7px 12px; }

/* Empty state cell */
.cf-table-empty {
  text-align: center !important; padding: 40px 20px !important;
  color: var(--text-muted);
}
.cf-table-empty i { font-size: 1.8rem; margin-bottom: 10px; display: block; opacity: .4; }
.cf-table-empty span { display: block; font-size: .83rem; }

/* Student-specific cell styles */
.cf-student-id-code {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 4px; padding: 2px 7px; font-size: .75rem;
  font-family: monospace; color: var(--blue); white-space: nowrap;
}
.cf-class-tag {
  background: var(--purple-soft); color: var(--purple);
  border-radius: 999px; padding: 2px 9px;
  font-size: .73rem; font-weight: 600; white-space: nowrap;
}
[data-theme="light"] .cf-class-tag { color: var(--purple-hover); }

.cf-status-pill {
  display: inline-block; border-radius: 999px;
  padding: 2px 10px; font-size: .72rem; font-weight: 600;
}
.pill-active   { background: rgba(5,150,105,.15); color: var(--emerald); }
.pill-inactive { background: rgba(220,38,38,.12);  color: var(--red); }

/* ── Pagination bar ── */
.cf-pagination {
  display: flex; align-items: center; gap: 12px;
  flex-wrap: wrap; padding: 6px 0;
}
.cf-pagination-info { font-size: .76rem; color: var(--text-muted); flex: 1; min-width: 140px; }
.cf-pagination-btns { display: flex; align-items: center; gap: 6px; }
.cf-page-btn {
  width: 30px; height: 30px; background: var(--bg-surface);
  border: 1px solid var(--border); color: var(--text-muted);
  border-radius: var(--radius-sm); cursor: pointer; font-size: .8rem;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.cf-page-btn:hover:not(:disabled) { border-color: var(--purple); color: var(--purple); }
.cf-page-btn:disabled { opacity: .35; cursor: default; }
.cf-pagination-pages { display: flex; gap: 4px; align-items: center; }
.cf-page-num-btn {
  min-width: 30px; height: 30px; background: var(--bg-surface);
  border: 1px solid var(--border); color: var(--text-muted);
  border-radius: var(--radius-sm); cursor: pointer; font-size: .78rem;
  padding: 0 6px; transition: var(--transition);
  display: inline-flex; align-items: center; justify-content: center;
}
.cf-page-num-btn:hover { border-color: var(--purple); color: var(--purple); }
.cf-page-num-btn.active {
  background: var(--purple); border-color: var(--purple); color: #fff;
}
.cf-page-ellipsis { color: var(--text-dim); font-size: .78rem; padding: 0 2px; }
.cf-per-page-wrap { display: flex; align-items: center; gap: 6px; }
.cf-select-sm {
  padding: 4px 8px !important; font-size: .76rem !important;
  width: auto !important; height: 30px;
}

/* ══════════════════════════════════════════════════════════════
   STUDENT UPLOAD OVERLAY / MODAL
══════════════════════════════════════════════════════════════ */
#upload-overlay {
  /* Force the overlay out of the flex-column cf-body layout
     so it covers the FULL viewport, including the header. */
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  width: 100vw !important;
  height: 100vh !important;
  background: rgba(0, 0, 0, 0.80);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  z-index: 9999 !important;
  padding: 20px;
  overflow-y: auto;
}
#upload-overlay.hidden {
  display: none !important;
}
[data-theme="light"] #upload-overlay { background: rgba(0, 0, 0, 0.50); }

#upload-overlay .cf-upload-modal {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 680px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.85);
  animation: modalIn .22s ease;
  position: relative;
  flex-shrink: 0;
}

/* Header */
#upload-overlay .cf-upload-modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 24px 16px; border-bottom: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.08) 0%, transparent 100%);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  flex-shrink: 0;
}
#upload-overlay .cf-upload-icon-wrap {
  width: 42px; height: 42px;
  background: linear-gradient(135deg, var(--purple), var(--purple-hover));
  border-radius: 10px; display: flex;
  align-items: center; justify-content: center;
  font-size: 1.1rem; color: #fff; flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.35);
}
#upload-overlay .cf-upload-title { font-size: 1.05rem; font-weight: 700; color: var(--text-white); line-height: 1.2; }
#upload-overlay .cf-upload-sub   { font-size: .77rem; color: var(--text-muted); margin-top: 2px; font-weight: 500; }

#upload-overlay .cf-modal-close {
  width: 32px; height: 32px; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); cursor: pointer;
  transition: all .15s; font-size: .9rem;
  flex-shrink: 0;
}
#upload-overlay .cf-modal-close:hover {
  background: var(--red-soft); border-color: var(--red);
  color: var(--red);
}

/* Body */
#upload-overlay .cf-upload-modal-body {
  padding: 22px 24px; overflow-y: auto; flex: 1;
  display: flex; flex-direction: column; gap: 16px;
}

/* Drop zone */
#upload-overlay .cf-drop-zone {
  border: 2px dashed var(--border); 
  border-radius: 12px;
  background: var(--bg-card); 
  transition: all .2s ease;
  position: relative; 
  min-height: 180px;
  display: flex; 
  align-items: center; 
  justify-content: center;
  flex-direction: column;
  cursor: pointer;
}
#upload-overlay .cf-drop-zone--active {
  border-color: var(--purple); 
  background: rgba(124, 58, 237, 0.08);
  transform: scale(1.01);
}
#upload-overlay .cf-drop-zone-inner {
  display: flex; flex-direction: column;
  align-items: center; gap: 8px; padding: 24px 20px; text-align: center;
}
#upload-overlay .cf-drop-icon    { font-size: 2.8rem; color: var(--purple); opacity: 0.7; margin-bottom: 4px; }
#upload-overlay .cf-drop-title   { font-size: .92rem; font-weight: 600; color: var(--text-white); margin-bottom: 2px; }
#upload-overlay .cf-drop-sub     { font-size: .78rem; color: var(--text-muted); margin-bottom: 6px; }
#upload-overlay .cf-drop-hint    { font-size: .73rem; color: var(--text-dim); }
#upload-overlay .cf-drop-hint strong { color: var(--purple); font-weight: 600; }
#upload-overlay .cf-file-hidden  { display: none; }

/* File selected preview inside drop zone */
.cf-file-selected {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 18px; width: 100%;
}
.cf-file-icon  { font-size: 1.8rem; color: var(--emerald); flex-shrink: 0; }
.cf-file-info  { flex: 1; min-width: 0; }
.cf-file-name  {
  display: block; font-size: .84rem; font-weight: 600;
  color: var(--text-white); overflow: hidden;
  text-overflow: ellipsis; white-space: nowrap;
}
.cf-file-size  { font-size: .75rem; }

/* Error banner */
.cf-upload-error {
  background: rgba(220, 38, 38, 0.1); 
  border: 1px solid var(--red);
  border-radius: 8px; 
  padding: 12px 16px;
  color: var(--red); 
  font-size: .84rem;
  display: flex; 
  align-items: flex-start; 
  gap: 10px;
  font-weight: 500;
}
.cf-upload-error i { flex-shrink: 0; margin-top: 2px; font-size: 1rem; }

/* Hint box */
.cf-upload-hint-box {
  background: rgba(59, 130, 246, 0.08); 
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: 8px; 
  padding: 12px 16px;
  font-size: .8rem; 
  color: var(--text-muted);
  display: flex; 
  align-items: flex-start; 
  gap: 10px;
  line-height: 1.5;
}
.cf-upload-hint-box i { 
  flex-shrink: 0; 
  margin-top: 1px; 
  font-size: 1rem;
  color: var(--blue);
}
.cf-link { 
  color: var(--purple); 
  text-decoration: none; 
  font-weight: 600;
  transition: all .15s;
}
.cf-link:hover { 
  color: var(--purple-hover); 
  text-decoration: underline;
}

/* Expected columns preview */
.cf-template-preview { 
  display: flex; 
  flex-direction: column; 
  gap: 8px; 
  background: var(--bg-card);
  padding: 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
}
.cf-label {
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 2px;
}
.cf-template-cols { 
  display: flex; 
  gap: 8px; 
  flex-wrap: wrap; 
}
.cf-col-tag {
  background: var(--bg-surface); 
  border: 1px solid var(--border);
  border-radius: 6px; 
  padding: 6px 14px;
  font-size: .77rem; 
  font-weight: 600; 
  color: var(--text-white);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.required-col { 
  border-color: var(--purple); 
  background: rgba(124, 58, 237, 0.1);
  color: var(--purple); 
}
.cf-optional { 
  font-size: .7rem; 
  font-weight: 500; 
  opacity: 0.7;
}
.cf-required { 
  color: var(--red);
  font-weight: 700;
}

/* Progress state */
.cf-upload-progress-wrap {
  display: flex; 
  flex-direction: column;
  align-items: center; 
  justify-content: center;
  gap: 16px; 
  padding: 40px 20px; 
  text-align: center;
  min-height: 200px;
}
.cf-spinner-lg { 
  font-size: 2.8rem; 
  color: var(--purple);
  animation: spin 1s linear infinite;
}
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
.cf-upload-progress-text {
  font-size: .94rem; 
  font-weight: 600; 
  color: var(--text-white);
}

/* Result state */
.cf-result-summary {
  display: flex; 
  flex-direction: column;
  align-items: center; 
  gap: 12px; 
  text-align: center; 
  padding: 20px;
  min-height: 200px;
  justify-content: center;
}
.cf-result-icon-wrap { 
  font-size: 3.2rem;
  animation: fadeInScale .3s ease;
}
@keyframes fadeInScale {
  from { 
    opacity: 0;
    transform: scale(0.8);
  }
  to { 
    opacity: 1;
    transform: scale(1);
  }
}
.cf-result-icon-success { 
  color: var(--emerald);
}
.cf-result-icon-warn { 
  color: var(--amber);
}
.cf-result-title { 
  font-size: 1.1rem; 
  font-weight: 700; 
  color: var(--text-white);
  margin-top: 4px;
}
.cf-result-message { 
  font-size: .85rem; 
  color: var(--text-muted);
  line-height: 1.5;
  max-width: 380px;
}

.cf-result-stats {
  display: flex; 
  gap: 24px; 
  flex-wrap: wrap;
  justify-content: center; 
  margin-top: 8px;
}
.cf-result-stat {
  display: flex; 
  flex-direction: column; 
  align-items: center; 
  gap: 4px;
  min-width: 80px;
  padding: 12px 16px;
  background: var(--bg-card);
  border-radius: 8px;
  border: 1px solid var(--border);
}
.cf-result-stat-num {
  font-size: 1.8rem; 
  font-weight: 800; 
  line-height: 1;
}
.cf-result-stat-label {
  font-size: .72rem; 
  text-transform: uppercase;
  letter-spacing: .08em; 
  color: var(--text-muted);
  font-weight: 600;
}
.stat-inserted .cf-result-stat-num { color: var(--emerald); }
.stat-skipped  .cf-result-stat-num { color: var(--amber); }
.stat-total    .cf-result-stat-num { color: var(--blue); }

.cf-skipped-table-wrap { max-height: 220px; overflow-y: auto; }

/* Footer */
.cf-upload-modal-footer {
  padding: 16px 24px; 
  border-top: 1px solid var(--border);
  background: var(--bg-card);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  flex-shrink: 0;
}
.cf-upload-modal-footer > div {
  display: flex; 
  justify-content: flex-end; 
  gap: 10px;
}

/* ============================================================
   STUDENT UPLOAD v2  — step indicator, preview tables, chips
   ============================================================ */

/* ── Step indicator ── */
.cf-upload-steps {
  display: flex; 
  align-items: center; 
  gap: 0;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
  flex-shrink: 0;
}
.cf-step {
  display: flex; 
  align-items: center; 
  gap: 8px;
  font-size: .8rem; 
  font-weight: 600; 
  color: var(--text-dim);
  transition: all .2s;
}
.cf-step.active { color: var(--purple); }
.cf-step.done   { color: var(--emerald); }
.cf-step-num {
  width: 26px; 
  height: 26px; 
  border-radius: 50%;
  background: var(--bg-surface); 
  border: 2px solid currentColor;
  display: flex; 
  align-items: center; 
  justify-content: center;
  font-size: .74rem; 
  font-weight: 700; 
  flex-shrink: 0;
  transition: all .2s;
}
.cf-step.active .cf-step-num { 
  background: var(--purple); 
  border-color: var(--purple); 
  color: #fff;
  box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.2);
}
.cf-step.done .cf-step-num { 
  background: var(--emerald); 
  border-color: var(--emerald); 
  color: #fff; 
}
.cf-step-line {
  flex: 1; 
  height: 2px; 
  background: var(--border);
  margin: 0 12px; 
  border-radius: 1px;
}
.cf-step-label {
  font-size: .78rem;
}

/* ── Drop zone updated states ── */
.cf-drop-zone:hover { 
  border-color: var(--purple); 
  background: rgba(124, 58, 237, 0.04);
}
.cf-drop-zone--has-file {
  border-color: var(--emerald) !important;
  background: rgba(5,150,105,.08) !important;
  border-style: solid !important;
}
#dz-idle {
  display: flex; 
  flex-direction: column;
  align-items: center; 
  gap: 10px;
  padding: 32px 20px; 
  text-align: center;
  pointer-events: none;
  width: 100%;
}
#dz-selected {
  display: flex; 
  flex-direction: column;
  align-items: center; 
  gap: 10px;
  padding: 28px 20px; 
  text-align: center;
  width: 100%;
}
.cf-file-icon-lg { 
  font-size: 3rem; 
  color: var(--emerald);
  margin-bottom: 4px;
}
.cf-file-name-display {
  font-size: .88rem; 
  font-weight: 600;
  color: var(--text-white); 
  word-break: break-word;
  max-width: 380px;
  line-height: 1.4;
}
.cf-file-size-display { 
  font-size: .76rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

/* ── Preview summary chips ── */
.cf-preview-summary {
  display: flex; 
  flex-wrap: wrap; 
  gap: 10px;
  margin-bottom: 4px;
}
.cf-stat-chip {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 14px;
  font-size: .8rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}
.cf-stat-chip i {
  font-size: .9rem;
}
.chip-green { 
  color: var(--emerald) !important; 
  border-color: var(--emerald) !important;
  background: rgba(5,150,105,.1) !important;
}
.chip-amber { 
  color: var(--amber) !important; 
  border-color: var(--amber) !important;
  background: rgba(217,119,6,.1) !important;
}

/* ── Preview / skipped tables ── */
.cf-preview-table-wrap { 
  max-height: 280px; 
  overflow-y: auto;
  border-radius: 8px;
  margin-top: 4px;
}

/* ── btn-sm ── */
.btn-sm {
  padding: 6px 14px !important; 
  font-size: .77rem !important;
  border-radius: 6px !important;
}

/* ── Additional text utilities for upload modal ── */
.cf-text-muted {
  color: var(--text-muted) !important;
}
.cf-bold {
  font-weight: 600 !important;
}

/* ── Smooth scrollbar for modal body ── */
.cf-upload-modal-body::-webkit-scrollbar {
  width: 8px;
}
.cf-upload-modal-body::-webkit-scrollbar-track {
  background: var(--bg-card);
  border-radius: 4px;
}
.cf-upload-modal-body::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}
.cf-upload-modal-body::-webkit-scrollbar-thumb:hover {
  background: var(--purple);
}
}