/* =========================================================
   UnzipExam UI — main.css
   Shared design system for all panels/pages
   Bootstrap 5 polish • Accessible • Dark-mode via .theme-dark
   Fonts: Inter (UI), Poppins (headings)
   ========================================================= */

/* ---- Fonts ---- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Poppins:wght@500;600;700&display=swap');

/* ---- Tokens ---- */
:root{
  /* Brand (picked from logo) */
  --primary-color:   #1f9790;   /* Logo teal */
  --secondary-color: #17716c;   /* Deeper support teal */
  --accent-color:    #14b8a6;   /* Bright aqua accent */

  /* Light variants / helpers */
  --primary-light:   #b8e4df;
  --danger-light:    #fecaca;

  /* Neutrals */
  --bg-body:     #f1fbfa;
  --surface:     #ffffff;
  --surface-2:   #f5faf9;
  --surface-3:   #edf4f3;
  --ink:         #042f2e;
  --text-color:  #0f172a;
  --muted-color: #64748b;

  /* Lines */
  --line-soft:   #e4f1ef;
  --line-medium: #c6ded9;
  --line-strong: #b6d5d0;

  /* States */
  --info-color:    #0ea5e9;
  --success-color: #16a34a;
  --warning-color: #f59e0b;
  --danger-color:  #dc2626;

  /* Effects */
  --shadow-1: 0 1px 2px rgba(4,47,46,.06);
  --shadow-2: 0 10px 24px rgba(4,47,46,.09);
  --shadow-3: 0 18px 50px rgba(4,47,46,.12);
  --radius-0: 0px;
  --radius-1: 10px;
  --transition: all .18s ease;
  --ring: 0 0 0 .18rem rgba(20,184,166,.28);

  /* Type */
  --font-sans: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, 'Noto Sans', sans-serif;
  --font-head: 'Poppins', var(--font-sans);
  --fs-12: .75rem;
  --fs-13: .8125rem;
  --fs-14: .875rem;
  --fs-15: .9375rem;
  --fs-16: 1rem;

  /* Table density */
  --row-pad-y: 10px;
  --row-pad-x: 12px;

  /* Pagination tones */
  --page-bg: #fff;
  --page-hover: #edf7f6;
  --page-disabled: #e6f1ef;

  /* Badge pastel tints */
  --t-success: rgba(22,163,74,.12);
  --t-danger:  rgba(220,38,38,.12);
  --t-info:    rgba(99,102,241,.12);
  --t-warn:    rgba(245,158,11,.14);
  --t-primary: rgba(20,184,166,.14);
}

/* =========================================================
   Base & Utilities
   ========================================================= */
html, body{
  background: var(--bg-body);
  color: var(--text-color);
  font-family: var(--font-sans);
  font-size: var(--fs-14);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
::selection{ background: rgba(31,151,144,.16); }

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

h1,h2,h3,h4,h5{
  color: var(--ink);
  font-family: var(--font-head);
  letter-spacing: .2px;
  margin-bottom: .5rem;
}
h1{ font-size: 1.6rem; }
h2{ font-size: 1.28rem; }
h3{ font-size: 1.1rem; }

.container, .container-fluid{ padding-left: 14px; padding-right: 14px; }
.text-muted{ color: var(--muted-color)!important; }
.divider{ height:1px; background: var(--line-soft); width:100%; }
.rounded-1{ border-radius: var(--radius-1)!important; }
.shadow-1{ box-shadow: var(--shadow-1)!important; }
:focus-visible{ outline: none; box-shadow: var(--ring); }

/* Spacing helpers */
.gap-2{ gap:.5rem; }
.gap-3{ gap:.75rem; }

/* Density toggles for tables (optional) */
.is-compact{ --row-pad-y: 8px; --row-pad-x: 10px; }
.is-comfy{ --row-pad-y: 12px; --row-pad-x: 14px; }

/* =========================================================
   Surfaces / Panels / Cards
   ========================================================= */
.card, .modal-content, .dropdown-menu, .offcanvas, .toast,
.panel, .list-group, .accordion-item, .popover {
  background: var(--surface);
  color: var(--text-color);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-1);
  box-shadow: var(--shadow-1);
}
.card { overflow: auto; }
.card-header, .modal-header, .popover-header {
  background: #f4faf9;
  border-bottom: 1px solid var(--line-strong);
  color: var(--text-color);
  font-weight: 600;
}
.card-footer, .modal-footer {
  background: #edf7f5;
  border-top: 1px solid var(--line-strong);
}
.panel{ padding: 14px; }
.panel-head{
  display:flex; align-items:center; justify-content:space-between;
  gap: 10px; margin-bottom: 10px;
}
.panel-title{
  font-family: var(--font-head);
  font-weight:600;
  color: var(--ink);
  margin:0;
}
.panel-sub{ color: var(--muted-color); font-size: var(--fs-13); }

/* =========================================================
   Buttons
   ========================================================= */
.btn{
  --bs-btn-font-weight: 600;
  font-family: var(--font-head);
  font-size: var(--fs-14);
  line-height: 1.2;
  padding: 6px 10px;
  border-radius: 6px;
  transition: var(--transition);
  box-shadow: none;
}
.btn:focus{ box-shadow: var(--ring); }
.btn-primary{
  background: var(--primary-color);
  border-color: var(--primary-color);
  color:#fff;
}
.btn-primary:hover{ filter: brightness(.96); }
.btn-secondary{
  background: var(--secondary-color);
  border-color: var(--secondary-color);
  color:#fff;
}
.btn-secondary:hover{ filter: brightness(.96); }
.btn-light{
  background:#f5faf9;
  border-color: var(--line-strong);
  color: var(--secondary-color);
}
.btn-outline-primary{
  color: var(--primary-color);
  border-color: var(--primary-color);
}
.btn-outline-primary:hover{
  background: var(--primary-color);
  color:#fff;
  border-color: var(--primary-color);
}
.btn-outline-danger{
  color:#b91c1c;
  border-color:#ef4444;
}
.btn-outline-danger:hover{
  background:#ef4444;
  color:#fff;
  border-color:#ef4444;
}
.btn-sm{ padding: 5px 8px; font-size: var(--fs-13); border-radius: 6px; }
.btn-lg{ padding: 8px 12px; font-size: var(--fs-15); border-radius: 8px; }
.btn i, .btn .fa{ margin-right: 6px; }

/* Icon-only */
.icon-btn{
  display:inline-flex; align-items:center; justify-content:center;
  width:34px; height:34px;
  border:1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--surface);
  color: var(--secondary-color);
  transition: var(--transition);
}
.icon-btn:hover{
  background:#edf7f5;
  transform:translateY(-1px);
}

/* =========================================================
   Forms (checkbox/radio/switch — fixed)
   ========================================================= */
.form-control, .form-select, .input-group-text, .form-control-plaintext{
  background:#fff; color: var(--text-color);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  box-shadow: none; transition: var(--transition);
  font-size: var(--fs-14); padding: 9px 10px;
}
.form-control:focus, .form-select:focus{
  border-color: var(--accent-color);
  box-shadow: var(--ring);
}
.form-control::placeholder{ color: #9aa3b2; }

/* Base controls */
.form-check-input{
  width:1.1rem; height:1.1rem;
  border:1px solid var(--line-strong);
  background-color:#fff;
  accent-color: var(--accent-color);
  appearance: none; -webkit-appearance: none; -moz-appearance: none;
  position: relative;
  border-radius: 6px;
  transition: border-color .15s ease, background-color .15s ease, box-shadow .15s ease;
  background-clip: padding-box;
}
.form-check-input:focus{
  box-shadow: var(--ring);
  border-color: var(--accent-color);
}
.form-check-input:disabled{ opacity:.6; cursor:not-allowed; }

/* Checkbox */
.form-check:not(.form-switch) .form-check-input[type="checkbox"]{
  background-image: none !important;
}
.form-check:not(.form-switch) .form-check-input[type="checkbox"]::after{
  content:"";
  position:absolute; inset:0;
  background-color:#fff;
  opacity:0; transition: opacity .12s ease;
  -webkit-mask: url("data:image/svg+xml,%3Csvg width='16' height='12' viewBox='0 0 16 12' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1.5 6.5L5.5 10.5L14.5 1.5' stroke='%23000' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/12px 12px no-repeat;
          mask: url("data:image/svg+xml,%3Csvg width='16' height='12' viewBox='0 0 16 12' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1.5 6.5L5.5 10.5L14.5 1.5' stroke='%23000' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/12px 12px no-repeat;
}
.form-check:not(.form-switch) .form-check-input[type="checkbox"]:checked{
  background-color: var(--accent-color);
  border-color: var(--accent-color);
}
.form-check:not(.form-switch) .form-check-input[type="checkbox"]:checked::after{ opacity:1; }

/* Radio */
.form-check-input[type="radio"]{
  border-radius: 50%;
  background-image: none;
}
.form-check-input[type="radio"]::after{
  content:"";
  position:absolute; top:50%; left:50%;
  width:.54rem; height:.54rem; border-radius:50%;
  transform: translate(-50%, -50%);
  background: var(--accent-color);
  opacity:0; transition: opacity .15s ease;
}
.form-check-input[type="radio"]:checked{
  border-color: var(--accent-color);
  background-color: #fff;
}
.form-check-input[type="radio"]:checked::after{ opacity:1; }

/* Switch */
.form-switch .form-check-input{
  width: 2.3rem; height: 1.3rem;
  border-radius: 1.3rem;
  background-color: #e4f1ef;
  border-color: var(--line-strong);
  background-image: none !important;
  position: relative;
}
.form-switch .form-check-input::before{
  content: "";
  position: absolute; top: 50%; left: 2px;
  width: 1rem; height: 1rem; border-radius: 50%;
  transform: translateY(-50%);
  background: #ffffff; box-shadow: 0 1px 2px rgba(0,0,0,.25);
  transition: left .2s ease;
}
.form-switch .form-check-input:checked{
  background-color: var(--accent-color);
  border-color: var(--accent-color);
}
.form-switch .form-check-input:checked::before{
  left: calc(100% - 1rem - 2px);
}

/* =========================================================
   Tables — Wrike-like
   ========================================================= */
.table,
.table-striped,
.table-hover,
.table-bordered{
  width: 100%;
  background: var(--surface);
  color: var(--text-color);
  border: none;
  border-radius: var(--radius-0);
  box-shadow: none;
  font-size: var(--fs-13);
  border-collapse: separate;
  border-spacing: 0;
}
.table caption{
  caption-side: top;
  color: var(--muted-color);
  padding: 8px 0;
}
.table > :not(caption) > * > *{
  background: transparent;
  border: none;
  padding: var(--row-pad-y) var(--row-pad-x);
  box-shadow: inset 0 -1px 0 var(--line-strong);
}
.table thead th{
  background: #edf7f5;
  color: var(--ink);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
  position: sticky; top: 0; z-index: 1;
  box-shadow: inset 0 -1px 0 var(--line-strong);
}
.table tbody th{ color: var(--text-color); font-weight: 600; }
.table tbody td a{ color: var(--secondary-color); }
.table tbody td a:hover{ color: var(--accent-color); }

/* Hover/active rows */
.table-hover tbody tr:hover > *{
  background: rgba(20,184,166,.06);
  box-shadow:
    inset 0 -1px 0 var(--line-strong),
    inset 0 1px 0 var(--line-strong);
}

/* Selected row utility */
.table tbody tr.is-selected > *{
  background: rgba(20,184,166,.10);
  box-shadow:
    inset 0 -1px 0 var(--line-strong),
    inset 0 1px 0 var(--line-strong);
}

/* Compact mode */
.table.table-sm > :not(caption) > * > *{
  padding: 8px 10px;
}

/* =========================================================
   Pagination
   ========================================================= */
.pagination{
  display: inline-flex;
  gap: 6px;
  align-items: center;
}
.page-link{
  padding: 6px 12px;
  font-size: var(--fs-14);
  line-height: 1.2;
  border: 1px solid var(--line-strong);
  background: var(--page-bg);
  color: var(--text-color);
  border-radius: 8px;
  transition: var(--transition);
}
.page-link:hover{
  background: var(--page-hover);
  color: var(--secondary-color);
  transform: translateY(-1px);
}
.page-link:focus{
  box-shadow: var(--ring);
  border-color: var(--accent-color);
}
.page-item.active .page-link{
  background: var(--accent-color);
  color: #fff;
  border-color: var(--accent-color);
}
.page-item.disabled .page-link{
  color: #9aa3b2;
  background: var(--page-disabled);
}

/* =========================================================
   Nav / Tabs / Pills
   ========================================================= */
.nav-tabs{
  border-bottom: 1px solid var(--line-strong);
  background: transparent;
}
.nav-tabs .nav-link{
  border: none; border-bottom: 2px solid transparent;
  color: var(--text-color); background: transparent !important;
  padding: 10px 8px; transition: var(--transition);
  border-radius: 0;
}
.nav-tabs .nav-link:hover{
  color: var(--secondary-color);
  background: #f4faf9 !important;
}
.nav-tabs .nav-link.active{
  color: var(--accent-color);
  border-bottom-color: var(--accent-color);
  background: transparent !important;
  font-weight: 600;
}

.nav-pills .nav-link{
  background: #fff;
  border: 1px solid var(--line-strong);
  color: var(--text-color);
  border-radius: 10px;
  margin-right: 6px;
  padding: 6px 10px;
}
.nav-pills .nav-link.active{
  background: var(--accent-color);
  color: #fff;
  border-color: var(--accent-color);
}

/* =========================================================
   Dropdowns / Popovers / Tooltips
   ========================================================= */
.dropdown-menu{
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-2);
  border-radius: 10px;
  padding: 6px;
  background: var(--surface);
}
.dropdown-item{
  border-radius: 6px;
  color: var(--text-color);
}
.dropdown-item:hover{
  background: #edf7f5;
  color: var(--secondary-color);
}

.popover{
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-2);
}
.popover-header{
  font-weight: 600;
  background: #f4faf9;
  border-bottom: 1px solid var(--line-strong);
}
.popover-body{ color: var(--text-color); }

.tooltip .tooltip-inner{
  background: #111827;
  color: #fff;
  border-radius: 6px;
  padding: 6px 8px;
}
.tooltip .tooltip-arrow::before{
  border-top-color: #111827 !important;
}

/* =========================================================
   List group / Accordion / Breadcrumb / Progress
   ========================================================= */
.list-group{
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  overflow: hidden;
  background: var(--surface);
}
.list-group-item{
  background: transparent;
  color: var(--text-color);
  border-color: var(--line-strong);
}
.list-group-item:hover{ background: #f4faf9; }
.list-group-item.active{
  background: var(--accent-color);
  border-color: var(--accent-color);
  color: #fff;
}

/* Accordion */
.accordion-item{
  border: 1px solid var(--line-strong);
  background: var(--surface);
}
.accordion-button{
  background: var(--surface);
  color: var(--text-color);
  transition: background .15s ease, color .15s ease;
}
.accordion-button:hover{ background: #f4faf9; }
.accordion-button:not(.collapsed){
  background: rgba(20,184,166,.08);
  color: var(--accent-color);
  box-shadow: inset 0 -1px 0 var(--line-strong);
}
/* Chevron */
.accordion-button::after{
  flex-shrink: 0;
  width: 1rem; height: 1rem; margin-left: auto;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg width='20' height='20' viewBox='0 0 20 20' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M5.75 7.5L10 11.75L14.25 7.5' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat center / 100% 100%;
          mask: url("data:image/svg+xml,%3Csvg width='20' height='20' viewBox='0 0 20 20' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M5.75 7.5L10 11.75L14.25 7.5' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat center / 100% 100%;
  background-image: none !important;
}
.accordion-button:not(.collapsed)::after{ transform: rotate(180deg); }

/* Breadcrumb */
.breadcrumb{
  background: var(--surface);
  border: 1px solid var(--line-strong);
  padding: 8px 12px;
  border-radius: 10px;
  box-shadow: var(--shadow-1);
}
.breadcrumb .breadcrumb-item{ color: var(--text-color); }
.breadcrumb .breadcrumb-item > a{ color: var(--secondary-color); }
.breadcrumb .breadcrumb-item > a:hover{ color: var(--accent-color); }
.breadcrumb .breadcrumb-item.active{ color: var(--text-color); }
.breadcrumb .breadcrumb-item + .breadcrumb-item::before{
  color: #94a3b8;
}

.progress{
  background: #e5eff0;
  border-radius: 8px;
  height: 8px;
}
.progress-bar{ background: var(--accent-color); }

/* =========================================================
   Badges — cute but SAME SIZE
   ========================================================= */
.badge{
  font-size: 11px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 999px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  border: 1px solid transparent;
  box-shadow: 0 1px 0 rgba(2,6,23,.04);
}
.badge i, .badge .fa{ font-size: 11px; }

/* Solid */
.badge-success { background-color: var(--success-color) !important; color:#fff !important; }
.badge-danger  { background-color: var(--danger-color)  !important; color:#fff !important; }
.badge-info    { background-color: var(--info-color)    !important; color:#fff !important; }
.badge-warning { background-color: var(--warning-color) !important; color:#0b1324 !important; }
.badge-primary { background-color: var(--accent-color)  !important; color:#0b1324 !important; }

/* Soft (pastel) */
.badge-soft-success{
  background: var(--t-success);
  color: #15803d;
  border-color: rgba(22,163,74,.22);
}
.badge-soft-danger{
  background: var(--t-danger);
  color: #b91c1c;
  border-color: rgba(220,38,38,.22);
}
.badge-soft-info{
  background: var(--t-info);
  color: #1d4ed8;
  border-color: rgba(59,130,246,.22);
}
.badge-soft-warning{
  background: var(--t-warn);
  color: #92400e;
  border-color: rgba(245,158,11,.26);
}
.badge-soft-primary{
  background: var(--t-primary);
  color: #0f766e;
  border-color: rgba(20,184,166,.26);
}

/* Outline */
.badge-outline-success{ background: transparent; color:#16a34a; border-color:#16a34a; }
.badge-outline-danger { background: transparent; color:#dc2626; border-color:#dc2626; }
.badge-outline-info   { background: transparent; color:#3b82f6; border-color:#3b82f6; }
.badge-outline-warning{ background: transparent; color:#f59e0b; border-color:#f59e0b; }
.badge-outline-primary{
  background: transparent;
  color: var(--primary-color);
  border-color: var(--primary-color);
}

/* v4 compatibility */
.badge.bg-warning, .badge.text-bg-warning{
  color:#0b1324!important;
}

/* =========================================================
   Navbar
   ========================================================= */
.navbar{
  border-bottom: 1px solid var(--line-strong);
  background: var(--surface) !important;
}
.navbar .navbar-brand,
.navbar .nav-link{
  color: var(--text-color) !important;
}
.navbar .nav-link:hover{
  color: var(--accent-color) !important;
}

/* =========================================================
   Empty state
   ========================================================= */
.empty{
  border:1px dashed var(--line-strong);
  border-radius: 10px;
  padding: 24px;
  text-align:center;
  color: var(--muted-color);
  background: var(--surface);
}

/* =========================================================
   Dark Theme
   ========================================================= */
.theme-dark{
  --bg-body:#020617;
  --surface:#04151f;
  --surface-2:#061b26;
  --surface-3:#071f2b;
  --ink:#e0f2f1;
  --text-color:#dbeafe;
  --muted-color:#9ca3af;

  --line-strong:#123341;
  --line-soft:#0b2531;

  --page-bg: #04151f;
  --page-hover: #06202b;
  --page-disabled: #020b13;
}

/* Surfaces */
.theme-dark .card,
.theme-dark .panel,
.theme-dark .breadcrumb,
.theme-dark .dropdown-menu,
.theme-dark .modal-content,
.theme-dark .offcanvas,
.theme-dark .toast,
.theme-dark .list-group,
.theme-dark .accordion-item,
.theme-dark .popover{
  background: var(--surface) !important;
  color: var(--text-color) !important;
  border-color: var(--line-strong) !important;
  box-shadow: var(--shadow-1);
}
.theme-dark .card-header,
.theme-dark .modal-header,
.theme-dark .popover-header{
  background: #03101a;
  border-bottom-color: var(--line-strong);
}
.theme-dark .card-footer,
.theme-dark .modal-footer{
  background: #04151f;
  border-top-color: var(--line-strong);
}

/* Forms — dark */
.theme-dark .form-control,
.theme-dark .form-select,
.theme-dark .input-group-text{
  background:#04151f;
  color: var(--text-color);
  border: 1px solid var(--line-strong);
}
.theme-dark .form-control::placeholder{ color: #8b93a7; }
.theme-dark .form-control:focus,
.theme-dark .form-select:focus{
  border-color: var(--accent-color);
  box-shadow: var(--ring);
}

/* Check/radio/switch */
.theme-dark .form-check-input{
  background:#020b13;
  border-color: var(--line-strong);
}
.theme-dark .form-check:not(.form-switch)
.form-check-input[type="checkbox"]:checked{
  background-color: var(--accent-color);
  border-color: var(--accent-color);
}
.theme-dark .form-check-input[type="radio"]::after{
  background: var(--accent-color);
}
.theme-dark .form-switch .form-check-input{
  background:#06202b;
}
.theme-dark .form-switch .form-check-input:checked{
  background-color: var(--accent-color);
  border-color: var(--accent-color);
}

/* Tables (dark) */
.theme-dark .table,
.theme-dark .table-striped,
.theme-dark .table-hover,
.theme-dark .table-bordered{
  background: var(--surface);
  color: var(--text-color);
  border: none;
}
.theme-dark .table > :not(caption) > * > *{
  background: transparent !important;
  border: none !important;
  padding: var(--row-pad-y) var(--row-pad-x);
  box-shadow: inset 0 -1px 0 var(--line-strong) !important;
}
.theme-dark .table thead th{
  background:#03101a !important;
  color: var(--text-color) !important;
  box-shadow: inset 0 -1px 0 var(--line-strong) !important;
}
.theme-dark .table tbody td,
.theme-dark .table tbody th{
  color: var(--text-color) !important;
}
.theme-dark .table-hover tbody tr:hover > *{
  background: rgba(20,184,166,.10) !important;
  box-shadow:
    inset 0 -1px 0 var(--line-strong),
    inset 0 1px 0 var(--line-strong) !important;
}

/* Pagination (dark) */
.theme-dark .page-link{
  background: var(--page-bg);
  color: var(--text-color);
  border-color: var(--line-strong);
}
.theme-dark .page-link:hover{
  background: var(--page-hover);
  color: var(--accent-color);
}
.theme-dark .page-item.active .page-link{
  background: var(--accent-color);
  border-color: var(--accent-color);
  color:#fff;
}
.theme-dark .page-item.disabled .page-link{
  color: #8b93a7;
  background: var(--page-disabled);
}

/* Tabs & Pills (dark) */
.theme-dark .nav-tabs{
  border-bottom-color: var(--line-strong);
  background: transparent;
}
.theme-dark .nav-tabs .nav-link{
  color: var(--text-color);
  background: transparent !important;
  border-bottom-color: transparent;
}
.theme-dark .nav-tabs .nav-link:hover{
  background:#04151f !important;
  color: var(--accent-color);
}
.theme-dark .nav-tabs .nav-link.active{
  color: var(--accent-color);
  background: transparent !important;
  border-bottom-color: var(--accent-color) !important;
}
.theme-dark .nav-pills .nav-link{
  background:#04151f;
  border-color: var(--line-strong);
  color: var(--text-color);
}
.theme-dark .nav-pills .nav-link.active{
  background: var(--accent-color);
  border-color: var(--accent-color);
  color:#fff;
}

/* Dropdowns / Popovers / Tooltips (dark) */
.theme-dark .dropdown-menu{
  background:#04151f;
}
.theme-dark .dropdown-item{
  color: var(--text-color);
}
.theme-dark .dropdown-item:hover{
  background:#06202b;
  color: var(--accent-color);
}
.theme-dark .popover{ background:#04151f; }
.theme-dark .popover-body{ color: var(--text-color); }
.theme-dark .tooltip .tooltip-inner{ background:#020617; }
.theme-dark .tooltip .tooltip-arrow::before{
  border-top-color:#020617 !important;
}

/* List group / Accordion (dark) */
.theme-dark .list-group{
  border-color: var(--line-strong);
}
.theme-dark .list-group-item{
  background: transparent;
  color: var(--text-color);
  border-color: var(--line-strong);
}
.theme-dark .list-group-item:hover{ background:#06202b; }
.theme-dark .list-group-item.active{
  background: var(--accent-color);
  border-color: var(--accent-color);
  color:#fff;
}
.theme-dark .accordion-item{ background: var(--surface); }
.theme-dark .accordion-button{
  background:#04151f;
  color: var(--text-color);
}
.theme-dark .accordion-button:hover{ background:#06202b; }
.theme-dark .accordion-button:not(.collapsed){
  background: rgba(20,184,166,.12);
  color: var(--accent-color);
  box-shadow: inset 0 -1px 0 var(--line-strong);
}

/* Navbar (dark) */
.theme-dark .navbar{
  background: var(--surface) !important;
  border-bottom: 1px solid var(--line-strong);
}
.theme-dark .navbar .navbar-brand,
.theme-dark .navbar .nav-link{
  color: var(--text-color) !important;
}
.theme-dark .navbar .nav-link:hover{
  color: var(--accent-color) !important;
}

/* Breadcrumb (dark) */
.theme-dark .breadcrumb{
  background: var(--surface);
  border-color: var(--line-strong);
}
.theme-dark .breadcrumb .breadcrumb-item{ color: var(--text-color); }
.theme-dark .breadcrumb .breadcrumb-item > a{ color: var(--text-color); }
.theme-dark .breadcrumb .breadcrumb-item > a:hover{
  color: var(--accent-color);
}
.theme-dark .breadcrumb .breadcrumb-item.active{
  color: var(--text-color);
}
.theme-dark .breadcrumb .breadcrumb-item + .breadcrumb-item::before{
  color: #8fa3c2;
}

/* Alerts (dark) */
.theme-dark .alert{
  background: var(--surface);
  color: var(--text-color);
  border-color: var(--line-strong);
}
.theme-dark .alert-info{
  color:#93c5fd;
  background:#0c203f;
}
.theme-dark .alert-success{
  color:#34d399;
  background:#0b2b22;
}
.theme-dark .alert-warning{
  color:#fbbf24;
  background:#2a1f07;
}
.theme-dark .alert-danger{
  color:#fca5a5;
  background:#2a0d0f;
}

/* Empty state (dark) */
.theme-dark .empty{
  background: var(--surface);
  border-color: var(--line-strong);
  color: var(--muted-color);
}

/* =========================================================
   Responsive polish
   ========================================================= */
@media (max-width: 992px){
  .card:hover{ transform: none; }
}
@media (prefers-reduced-motion: reduce){
  * { transition: none !important; }
}

/* =========================================================
   Extra components from W3T (tweaked for UnzipExam)
   ========================================================= */

/* Dropdowns inside table */
.table-wrap .dropdown{position:relative}
.dropdown [data-bs-toggle="dropdown"]{border-radius:10px}
.dropdown-menu{
  border-radius:12px;
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-2);
  min-width:220px;
  z-index:1085;
}
.dropdown-item{display:flex;align-items:center;gap:.6rem}
.dropdown-item i{width:16px;text-align:center}
.dropdown-item.text-danger{color:var(--danger-color) !important}

/* Empty & loader */
#empty{color:var(--muted-color)}
.placeholder{
  background:linear-gradient(90deg, #00000010, #00000005, #00000010);
  border-radius:8px;
}

/* Modals — match look across both modals */
.modal-content{
  border-radius:16px;
  border:1px solid var(--line-strong);
  background:var(--surface);
}
.modal-header{border-bottom:1px solid var(--line-strong)}
.modal-footer{border-top:1px solid var(--line-strong)}
.form-control, .form-select{
  border-radius:12px;
  border:1px solid var(--line-strong);
  background:#fff;
}
html.theme-dark .form-control,
html.theme-dark .form-select{
  background:#04151f;
  color:#e5e7eb;
  border-color:var(--line-strong);
}
.modal-title i{opacity:.9}

/* ===== Featured Media modal ===== */
.media-head{
  display:flex;align-items:flex-start;justify-content:space-between;
  gap:12px;margin-bottom:8px;
}
.media-head .meta .title{
  font-weight:700;
  color:var(--ink);
  font-family:var(--font-head);
  line-height:1.2;
}
.media-head .meta .sub{
  color:var(--muted-color);
  font-size:13px;
}

/* Section labels inside modal */
.modal .section-label{
  font-weight:600;
  color:var(--ink);
  margin-top:6px;
}

/* Dropzone */
.dropzone{
  border:1.5px dashed var(--line-strong);
  border-radius:14px;
  padding:18px;
  text-align:center;
  background:var(--surface-2);
  transition: background .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.dropzone.drag{
  background:color-mix(in oklab, var(--accent-color) 10%, transparent);
  border-color:var(--accent-color);
  box-shadow:0 0 0 3px color-mix(in oklab, var(--accent-color) 18%, transparent);
}
.dropzone .hint{color:var(--muted-color);font-size:13px}

/* Media list */
.media-list{margin-top:8px}
.media-item{
  display:grid;grid-template-columns:28px 1fr auto;align-items:center;gap:10px;
  border:1px solid var(--line-strong);
  border-radius:12px;
  background:var(--surface-2);
  padding:10px 12px;
  margin-bottom:8px;
}
.media-item .handle{cursor:grab;opacity:.7}
.media-item.dragging{opacity:.5}
.media-item .url{
  font-size:13px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  max-width:52vw;
}
.media-item .kind{font-size:12px;color:var(--muted-color)}
.media-item .btn-icon{
  border:none;background:transparent;
  padding:.25rem .4rem;
  color:#6b7280;
}
.media-item .btn-icon:hover{color:var(--ink)}
.media-item .icon{
  width:28px;height:28px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);
  background:#fff;
}

/* Dark tweaks for media/dropzone */
html.theme-dark .panel,
html.theme-dark .table-wrap.card,
html.theme-dark .modal-content{
  background:#04151f;
  border-color:var(--line-strong);
}
html.theme-dark .table thead th{
  background:#04151f;
  border-color:var(--line-strong);
  color:#94a3b8;
}
html.theme-dark .table tbody tr{border-color:var(--line-soft)}
html.theme-dark .dropdown-menu{
  background:#04151f;
  border-color:var(--line-strong);
}
html.theme-dark .dropzone{
  background:#020b13;
  border-color:var(--line-strong);
}
html.theme-dark .media-item{
  background:#020b13;
  border-color:var(--line-strong);
}

/* Dropdown visibility safety nets */
.table-wrap .dropdown { position: relative; }
.table-wrap .dropdown-menu { z-index: 2050; }

/* File button look */
.btn-light{
  background:var(--surface);
  border:1px solid var(--line-strong);
}

/* Shared small wrapper */
.sm-wrap{
  max-width:1100px;
  margin:16px auto 40px;
}
.sm.card{
  border:1px solid var(--line-strong);
  border-radius:16px;
  background:var(--surface);
  box-shadow:var(--shadow-2);
  overflow:hidden;
}
.sm .card-header{
  background:var(--surface);
  border-bottom:1px solid var(--line-strong);
  padding:16px 18px;
}
.sm-head{display:flex;align-items:center;gap:10px}
.sm-head i{color:var(--accent-color)}
.sm-head strong{
  color:var(--ink);
  font-family:var(--font-head);
  font-weight:700;
}
.sm-head .hint{
  color:var(--muted-color);
  font-size:var(--fs-13);
}
.section-title{
  font-weight:600;
  color:var(--ink);
  font-family:var(--font-head);
  margin:12px 2px 14px;
}
.divider-soft{
  height:1px;
  background:var(--line-soft);
  margin:10px 0 16px;
}

.dim{
  position:absolute;inset:0;
  display:none;align-items:center;justify-content:center;
  background:rgba(0,0,0,.06);z-index:2;
}
.dim.show{display:flex}
.spin{
  width:18px;height:18px;
  border:3px solid #0001;
  border-top-color:var(--accent-color);
  border-radius:50%;
  animation:rot 1s linear infinite;
}
@keyframes rot{to{transform:rotate(360deg)}}

.err{
  font-size:12px;
  color:var(--danger-color);
  display:none;
  margin-top:6px;
}
.err:not(:empty){display:block}

/* Dropzone (file upload) */
.dropzone{
  display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  text-align:center;
  border:2px dashed var(--line-strong);
  border-radius:14px;
  background:var(--surface-2);
  padding:20px;
  transition:border-color .18s ease, background .18s ease;
}
.dropzone:hover{
  border-color:var(--primary-color);
  background:color-mix(in oklab, var(--primary-color) 7%, transparent);
}
.dropzone.drag{
  border-color:var(--primary-color);
  box-shadow:0 0 0 3px color-mix(in oklab, var(--primary-color) 15%, transparent);
}
.drop-icon{
  width:52px;height:52px;border-radius:999px;
  border:1px dashed var(--line-strong);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:10px;opacity:.9;
}
.file-list{margin-top:10px}
.file-row{
  display:grid;grid-template-columns:1fr auto auto auto;
  align-items:center;gap:12px;
  border:1px solid var(--line-strong);
  border-radius:12px;
  background:var(--surface-2);
  padding:10px 14px;
  margin-bottom:10px;
  transition:all 0.2s ease;
}
.file-row:hover{
  background:var(--surface-3);
  border-color:var(--line-medium);
}
.file-row .name{
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  font-weight:500;color:var(--ink);
}
.file-row .size{
  color:var(--muted-color);
  font-size:12px;
  min-width:70px;
  text-align:right;
}

/* Improved button styles */
.btn-action{
  border:none;background:transparent;
  padding:6px 10px;border-radius:6px;
  transition:all 0.2s ease;
  cursor:pointer;font-size:13px;
  display:flex;align-items:center;gap:4px;
  border:1px solid transparent;
}
.btn-preview{
  color:var(--primary-color);
  border-color:var(--primary-light);
}
.btn-preview:hover{
  background:var(--primary-color);
  color:white;
}
.btn-delete{
  color:var(--danger-color);
  border-color:var(--danger-light);
}
.btn-delete:hover{
  background:var(--danger-color);
  color:white;
}

.btn-group{display:flex;gap:8px;align-items:center;}

.btn-loading{pointer-events:none;opacity:.85}
.btn-loading .btn-label{visibility:hidden}
.btn-loading .btn-spinner{display:inline-block !important}
.btn-spinner{
  display:none;
  width:1rem;height:1rem;
  border:.2rem solid #0001;
  border-top-color:#fff;
  border-radius:50%;
  vertical-align:-.125em;
  animation:rot 1s linear infinite;
}

/* Preview modal styles */
.preview-container {max-height: 70vh; overflow: auto;}
.preview-image {max-width: 100%; max-height: 60vh; border-radius: 8px;}
.preview-pdf {width: 100%; height: 500px; border: 1px solid var(--line-strong); border-radius: 8px;}
.preview-text {
  text-align: left;
  background: var(--surface-2);
  padding: 1rem;
  border-radius: 8px;
  max-height: 60vh;
  overflow: auto;
  font-family: monospace;
}

html.theme-dark .dropzone{
  background:#04151f;
  border-color:var(--line-strong);
}
html.theme-dark .file-row{
  background:#020b13;
  border-color:var(--line-strong);
}
html.theme-dark .file-row:hover{background:#071f2b;}
html.theme-dark .preview-text {background: #071f2b;}