/* ============================================================
   EduManage Pro — Master Stylesheet
   style.css
   ============================================================ */

/* ── CSS Variables ──────────────────────────────────────────── */
:root {
    --navy:        #0B1D3A;
    --navy-light:  #112347;
    --navy-hover:  #0d2240;
    --accent:      #F4B942;
    --accent-dark: #D9A030;
    --emerald:     #10B981;
    --emerald-lt:  #D1FAE5;
    --red:         #EF4444;
    --red-lt:      #FEE2E2;
    --blue:        #3B82F6;
    --blue-lt:     #DBEAFE;
    --purple:      #8B5CF6;
    --purple-lt:   #EDE9FE;
    --orange:      #F97316;
    --orange-lt:   #FFEDD5;
    --gray:        #6B7280;
    --light:       #F8FAFC;
    --white:       #FFFFFF;
    --border:      #E2E8F0;
    --text:        #1E293B;
    --text-muted:  #64748B;
    --text-light:  #94A3B8;

    --sidebar-w:        240px;
    --sidebar-w-collapsed: 64px;
    --topnav-h:         56px;
    --radius:           10px;
    --radius-lg:        14px;
    --shadow:           0 1px 4px rgba(0,0,0,.08);
    --shadow-md:        0 4px 16px rgba(0,0,0,.10);
    --shadow-lg:        0 8px 32px rgba(0,0,0,.14);
    --transition:       0.2s ease;
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; scroll-behavior: smooth; }
body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--light);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }
ul { list-style: none; }

/* ── App Layout ─────────────────────────────────────────────── */
.app-wrapper {
    display: flex;
    min-height: 100vh;
}

/* ── Sidebar ────────────────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-w);
    background: var(--navy);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0;
    height: 100vh;
    z-index: 200;
    transition: width var(--transition), transform var(--transition);
    overflow: hidden;
}
.sidebar.collapsed { width: var(--sidebar-w-collapsed); }
.sidebar.collapsed .nav-label,
.sidebar.collapsed .sidebar-brand,
.sidebar.collapsed .sidebar-user-info,
.sidebar.collapsed .sidebar-section-label,
.sidebar.collapsed .sidebar-version { display: none; }
.sidebar.collapsed .sidebar-user { justify-content: center; padding: 10px 0; }
.sidebar.collapsed .sidebar-nav-item { justify-content: center; padding: 12px; }

/* Sidebar Header */
.sidebar-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 18px 16px 14px;
    border-bottom: 1px solid rgba(255,255,255,.08);
    min-height: 70px;
}
.sidebar-logo-icon {
    width: 40px; height: 40px;
    background: var(--accent);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}
.sidebar-logo-img {
    width: 40px; height: 40px;
    object-fit: contain;
    border-radius: 8px;
    flex-shrink: 0;
}
.sidebar-brand-name {
    color: var(--white);
    font-weight: 800;
    font-size: 13.5px;
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 150px;
}
.sidebar-brand-sub {
    color: var(--accent);
    font-size: 11px;
    font-weight: 600;
}

/* Sidebar User Card */
.sidebar-user {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    background: rgba(255,255,255,.05);
    border-bottom: 1px solid rgba(255,255,255,.06);
}
.sidebar-user-avatar {
    width: 36px; height: 36px;
    background: var(--accent);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 15px; font-weight: 800;
    color: var(--navy);
    flex-shrink: 0;
}
.sidebar-user-name { color: var(--white); font-size: 13px; font-weight: 700; }
.sidebar-user-role { color: var(--accent); font-size: 11px; font-weight: 600; }

/* Sidebar Nav */
.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 8px 0;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,.1) transparent;
}
.sidebar-section-label {
    padding: 12px 16px 4px;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: rgba(255,255,255,.35);
}
.sidebar-nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    color: rgba(255,255,255,.72);
    font-size: 13.5px;
    font-weight: 500;
    border-left: 3px solid transparent;
    cursor: pointer;
    transition: background var(--transition), color var(--transition), border-color var(--transition);
    position: relative;
    white-space: nowrap;
    text-decoration: none;
}
.sidebar-nav-item:hover {
    background: rgba(255,255,255,.07);
    color: var(--white);
    text-decoration: none;
}
.sidebar-nav-item.active {
    background: rgba(244,185,66,.12);
    color: var(--accent);
    border-left-color: var(--accent);
    font-weight: 700;
}
.nav-icon { font-size: 17px; flex-shrink: 0; width: 20px; text-align: center; }

/* Sidebar Footer */
.sidebar-footer {
    border-top: 1px solid rgba(255,255,255,.08);
    padding: 10px 0 4px;
}
.sidebar-logout {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    color: rgba(255,255,255,.65);
    font-size: 13.5px;
    font-weight: 500;
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
    text-decoration: none;
}
.sidebar-logout:hover { background: rgba(239,68,68,.15); color: #fca5a5; text-decoration: none; }
.sidebar-version { padding: 4px 16px 8px; font-size: 10px; color: rgba(255,255,255,.25); }

/* Mobile overlay */
.sidebar-overlay {
    display: none;
    position: fixed; inset: 0;
    background: rgba(0,0,0,.5);
    z-index: 199;
}

/* ── Main Area ──────────────────────────────────────────────── */
.main-area {
    flex: 1;
    margin-left: var(--sidebar-w);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: margin-left var(--transition);
}
.main-area.sidebar-collapsed { margin-left: var(--sidebar-w-collapsed); }

/* ── Topnav ─────────────────────────────────────────────────── */
.topnav {
    height: var(--topnav-h);
    background: var(--white);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}
.topnav-left, .topnav-right { display: flex; align-items: center; gap: 12px; }

.sidebar-toggle {
    background: none; border: none;
    font-size: 20px; cursor: pointer;
    color: var(--gray);
    width: 36px; height: 36px;
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    transition: background var(--transition);
}
.sidebar-toggle:hover { background: var(--light); }

/* Breadcrumb in topnav */
.breadcrumb-nav { display: flex; align-items: center; gap: 6px; font-size: 13px; }
.bc-home a { color: var(--text-muted); text-decoration: none; }
.bc-sep { color: var(--text-light); }
.bc-current { color: var(--text); font-weight: 600; }

/* Meta pill */
.meta-pill {
    background: var(--light);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 4px 12px;
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 600;
}

/* Notifications */
.notif-wrap, .user-wrap { position: relative; }
.notif-btn {
    background: none; border: none;
    font-size: 20px; cursor: pointer;
    width: 38px; height: 38px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    position: relative;
    transition: background var(--transition);
}
.notif-btn:hover { background: var(--light); }
.notif-badge {
    position: absolute;
    top: 2px; right: 2px;
    background: var(--red);
    color: var(--white);
    border-radius: 50%;
    width: 16px; height: 16px;
    font-size: 9px; font-weight: 800;
    display: flex; align-items: center; justify-content: center;
}
.notif-dropdown {
    position: absolute;
    top: 44px; right: 0;
    width: 300px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 300;
    overflow: hidden;
}
.notif-header {
    padding: 12px 16px;
    display: flex; justify-content: space-between; align-items: center;
    border-bottom: 1px solid var(--border);
    font-weight: 700; font-size: 14px;
}
.notif-mark-all { font-size: 12px; color: var(--blue); }
.notif-item {
    display: block;
    padding: 10px 16px;
    border-bottom: 1px solid var(--border);
    text-decoration: none;
    transition: background var(--transition);
}
.notif-item:hover { background: var(--light); }
.notif-item-title { font-weight: 700; font-size: 13px; color: var(--text); }
.notif-item-body  { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.notif-item-time  { font-size: 11px; color: var(--text-light); margin-top: 4px; }
.notif-empty { padding: 20px; text-align: center; font-size: 13px; color: var(--text-muted); }
.notif-footer { padding: 10px 16px; text-align: center; font-size: 13px; background: var(--light); }

/* User button */
.user-btn {
    display: flex; align-items: center; gap: 8px;
    background: none; border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 5px 10px 5px 6px;
    cursor: pointer;
    transition: border-color var(--transition), background var(--transition);
}
.user-btn:hover { border-color: var(--navy); background: var(--light); }
.user-avatar {
    width: 30px; height: 30px;
    background: var(--navy);
    color: var(--accent);
    border-radius: 50%;
    font-size: 13px; font-weight: 800;
    display: flex; align-items: center; justify-content: center;
}
.user-info { text-align: left; }
.user-name { display: block; font-size: 13px; font-weight: 700; color: var(--text); }
.user-role { display: block; font-size: 11px; color: var(--text-muted); }
.user-caret { font-size: 11px; color: var(--text-muted); }

/* User dropdown */
.user-dropdown {
    position: absolute;
    top: 46px; right: 0;
    width: 220px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 300;
    overflow: hidden;
}
.user-dropdown-header {
    padding: 14px 16px;
    display: flex; align-items: center; gap: 10px;
    border-bottom: 1px solid var(--border);
    background: var(--light);
}
.user-avatar-lg {
    width: 40px; height: 40px;
    background: var(--navy);
    color: var(--accent);
    border-radius: 50%;
    font-size: 16px; font-weight: 800;
    display: flex; align-items: center; justify-content: center;
}
.ud-name { font-size: 14px; font-weight: 700; color: var(--text); }
.ud-role { font-size: 12px; color: var(--text-muted); }
.ud-item {
    display: block;
    padding: 10px 16px;
    font-size: 13.5px;
    color: var(--text);
    text-decoration: none;
    transition: background var(--transition);
}
.ud-item:hover { background: var(--light); text-decoration: none; }
.ud-divider { height: 1px; background: var(--border); margin: 4px 0; }
.ud-logout { color: var(--red) !important; }

/* ── Flash messages ─────────────────────────────────────────── */
.flash-container { padding: 12px 24px 0; }
.alert {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 12px 16px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 10px;
    animation: slideDown .2s ease;
}
@keyframes slideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}
.alert-success { background: var(--emerald-lt); color: #065F46; border: 1px solid #A7F3D0; }
.alert-error   { background: var(--red-lt);     color: #991B1B; border: 1px solid #FECACA; }
.alert-warning { background: #FEF3C7;            color: #92400E; border: 1px solid #FDE68A; }
.alert-info    { background: var(--blue-lt);     color: #1E40AF; border: 1px solid #BFDBFE; }
.alert-close {
    background: none; border: none; font-size: 18px;
    cursor: pointer; opacity: .6; line-height: 1;
    flex-shrink: 0;
}
.alert-close:hover { opacity: 1; }

/* ── Main Content ───────────────────────────────────────────── */
.main-content { padding: 24px; flex: 1; }

/* ── Page Header ────────────────────────────────────────────── */
.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}
.page-header-left {}
.page-title {
    font-size: 22px;
    font-weight: 800;
    color: var(--text);
    margin: 0;
    line-height: 1.2;
}
.page-subtitle {
    font-size: 13.5px;
    color: var(--text-muted);
    margin-top: 4px;
}
.page-header-actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

/* ── Cards ──────────────────────────────────────────────────── */
.card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
}
.card-header {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-weight: 700;
    font-size: 15px;
    color: var(--text);
}
.card-body  { padding: 20px; }
.card-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--border);
    background: var(--light);
}

/* ── Stat Cards ─────────────────────────────────────────────── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}
.stat-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 18px 20px;
    display: flex;
    align-items: center;
    gap: 14px;
    box-shadow: var(--shadow);
    transition: box-shadow var(--transition);
}
.stat-card:hover { box-shadow: var(--shadow-md); }
.stat-icon {
    width: 50px; height: 50px;
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}
.stat-info {}
.stat-value { font-size: 26px; font-weight: 800; color: var(--text); line-height: 1.1; }
.stat-label { font-size: 12.5px; color: var(--text-muted); font-weight: 600; margin-top: 2px; }
.stat-sub   { font-size: 11px; font-weight: 600; margin-top: 3px; }

/* Stat color variants */
.stat-blue   .stat-icon { background: var(--blue-lt);   color: var(--blue);   }
.stat-green  .stat-icon { background: var(--emerald-lt); color: var(--emerald);}
.stat-red    .stat-icon { background: var(--red-lt);    color: var(--red);    }
.stat-purple .stat-icon { background: var(--purple-lt); color: var(--purple); }
.stat-orange .stat-icon { background: var(--orange-lt); color: var(--orange); }
.stat-gold   .stat-icon { background: #FEF3C7;          color: #D97706;       }

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 18px;
    border-radius: 8px;
    font-size: 13.5px;
    font-weight: 700;
    border: none;
    cursor: pointer;
    transition: opacity var(--transition), box-shadow var(--transition);
    font-family: inherit;
    line-height: 1;
    text-decoration: none;
    white-space: nowrap;
}
.btn:hover { opacity: .88; text-decoration: none; }
.btn:active { opacity: .76; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.btn-primary  { background: var(--navy);    color: var(--white); }
.btn-accent   { background: var(--accent);  color: var(--navy);  }
.btn-success  { background: var(--emerald); color: var(--white); }
.btn-danger   { background: var(--red);     color: var(--white); }
.btn-warning  { background: #F59E0B;        color: var(--white); }
.btn-purple   { background: var(--purple);  color: var(--white); }
.btn-blue     { background: var(--blue);    color: var(--white); }
.btn-secondary{ background: var(--gray);    color: var(--white); }
.btn-outline  { background: transparent; border: 1.5px solid var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--navy); background: var(--light); }
.btn-whatsapp { background: #25D366; color: var(--white); }
.btn-wa-dark  { background: #128C7E; color: var(--white); }

.btn-sm { padding: 6px 12px; font-size: 12.5px; }
.btn-lg { padding: 12px 28px; font-size: 15px; }
.btn-block { width: 100%; justify-content: center; }
.btn-icon { padding: 8px; width: 34px; height: 34px; }

/* ── Forms ──────────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-label {
    display: block;
    font-size: 13px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 6px;
}
.form-label .req { color: var(--red); }
.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    color: var(--text);
    background: var(--white);
    transition: border-color var(--transition), box-shadow var(--transition);
    font-family: inherit;
    outline: none;
}
.form-control:focus {
    border-color: var(--navy);
    box-shadow: 0 0 0 3px rgba(11,29,58,.08);
}
.form-control:disabled { background: var(--light); cursor: not-allowed; opacity: .7; }
.form-control.is-invalid { border-color: var(--red); }
textarea.form-control { min-height: 90px; resize: vertical; }
select.form-control { cursor: pointer; }

.form-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 18px; }
.form-grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0 16px; }
.form-hint { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.form-error { font-size: 12px; color: var(--red); margin-top: 4px; font-weight: 600; }

/* Input with icon */
.input-icon-wrap { position: relative; }
.input-icon-wrap .input-icon {
    position: absolute; left: 11px; top: 50%; transform: translateY(-50%);
    font-size: 16px; pointer-events: none;
}
.input-icon-wrap .form-control { padding-left: 38px; }
.toggle-password {
    position: absolute; right: 10px; top: 50%; transform: translateY(-50%);
    background: none; border: none; cursor: pointer; font-size: 16px; padding: 2px;
}

/* ── Tables ─────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13.5px;
}
.data-table thead tr { background: var(--light); }
.data-table thead th {
    padding: 11px 14px;
    text-align: left;
    font-size: 11.5px;
    font-weight: 700;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: .05em;
}
.data-table tbody tr {
    border-bottom: 1px solid var(--border);
    transition: background var(--transition);
}
.data-table tbody tr:last-child { border-bottom: none; }
.data-table tbody tr:hover { background: #F9FAFB; }
.data-table tbody td { padding: 12px 14px; color: var(--text); vertical-align: middle; }
.data-table .td-actions { display: flex; gap: 6px; align-items: center; }
.table-empty {
    text-align: center; padding: 48px 20px;
    color: var(--text-muted); font-size: 14px;
}
.table-empty-icon { font-size: 40px; margin-bottom: 8px; }

/* ── Badges ─────────────────────────────────────────────────── */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11.5px;
    font-weight: 700;
    white-space: nowrap;
}
.badge-success  { background: var(--emerald-lt); color: #065F46; }
.badge-danger   { background: var(--red-lt);     color: #991B1B; }
.badge-warning  { background: #FEF3C7;           color: #92400E; }
.badge-primary  { background: var(--blue-lt);    color: #1E40AF; }
.badge-purple   { background: var(--purple-lt);  color: #5B21B6; }
.badge-info     { background: #CFFAFE;           color: #0E7490; }
.badge-secondary{ background: #F1F5F9;           color: #475569; }
.badge-navy     { background: rgba(11,29,58,.1); color: var(--navy); }

/* ── Modals ─────────────────────────────────────────────────── */
.modal-backdrop {
    position: fixed; inset: 0;
    background: rgba(0,0,0,.5);
    z-index: 400;
    display: flex; align-items: center; justify-content: center;
    padding: 20px;
    animation: fadeIn .15s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal {
    background: var(--white);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 560px;
    max-height: 92vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: slideUp .2s ease;
}
.modal-lg { max-width: 760px; }
.modal-xl { max-width: 960px; }
@keyframes slideUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}
.modal-header {
    padding: 18px 20px;
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between;
}
.modal-title { font-size: 16px; font-weight: 800; color: var(--text); }
.modal-close {
    background: none; border: none; font-size: 22px; cursor: pointer;
    color: var(--gray); line-height: 1; padding: 2px 6px;
    border-radius: 6px; transition: background var(--transition);
}
.modal-close:hover { background: var(--light); }
.modal-body   { padding: 20px; }
.modal-footer {
    padding: 14px 20px;
    border-top: 1px solid var(--border);
    display: flex; justify-content: flex-end; gap: 8px;
    background: var(--light);
}

/* ── Search bar ─────────────────────────────────────────────── */
.search-bar-wrap { position: relative; display: inline-block; }
.search-bar-wrap .search-icon {
    position: absolute; left: 11px; top: 50%; transform: translateY(-50%);
    font-size: 15px; pointer-events: none;
}
.search-input {
    padding: 9px 14px 9px 36px;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    font-size: 13.5px;
    width: 280px;
    font-family: inherit;
    outline: none;
    transition: border-color var(--transition);
}
.search-input:focus { border-color: var(--navy); }

/* ── Toolbar (filter row above tables) ──────────────────────── */
.table-toolbar {
    padding: 14px 16px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
    border-bottom: 1px solid var(--border);
    background: var(--light);
}
.table-toolbar-right { margin-left: auto; display: flex; gap: 8px; }
.filter-select {
    padding: 8px 12px;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    font-size: 13.5px;
    font-family: inherit;
    outline: none;
    background: var(--white);
    cursor: pointer;
    transition: border-color var(--transition);
}
.filter-select:focus { border-color: var(--navy); }

/* ── Pagination ─────────────────────────────────────────────── */
.pagination {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    background: var(--light);
    justify-content: flex-end;
}
.page-btn {
    display: inline-flex; align-items: center; justify-content: center;
    width: 32px; height: 32px;
    border-radius: 8px;
    font-size: 13px; font-weight: 600;
    color: var(--text);
    text-decoration: none;
    border: 1px solid var(--border);
    background: var(--white);
    transition: background var(--transition), border-color var(--transition);
}
.page-btn:hover { background: var(--light); border-color: var(--navy); text-decoration: none; }
.page-btn.active { background: var(--navy); color: var(--white); border-color: var(--navy); }

/* ── Grid layouts ───────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; }
.grid-4 { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 16px; }
.col-span-2 { grid-column: span 2; }

/* ── Progress bar ───────────────────────────────────────────── */
.progress { background: var(--light); border-radius: 20px; height: 10px; overflow: hidden; }
.progress-bar {
    height: 100%; border-radius: 20px;
    background: var(--navy);
    transition: width .6s ease;
}
.progress-bar.green  { background: var(--emerald); }
.progress-bar.red    { background: var(--red); }
.progress-bar.orange { background: var(--orange); }
.progress-bar.blue   { background: var(--blue); }

/* ── Tabs ───────────────────────────────────────────────────── */
.tabs { display: flex; border-bottom: 2px solid var(--border); margin-bottom: 20px; gap: 0; }
.tab-btn {
    padding: 10px 20px;
    font-size: 13.5px; font-weight: 700;
    color: var(--text-muted);
    cursor: pointer;
    border: none; background: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: color var(--transition), border-color var(--transition);
    font-family: inherit;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--navy); border-bottom-color: var(--navy); }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* ── Stepper ────────────────────────────────────────────────── */
.stepper { display: flex; margin-bottom: 24px; }
.step {
    flex: 1; padding: 10px 16px;
    font-size: 13px; font-weight: 700;
    text-align: center;
    background: var(--light);
    color: var(--text-muted);
    border-radius: 0;
}
.step:first-child { border-radius: var(--radius) 0 0 var(--radius); }
.step:last-child  { border-radius: 0 var(--radius) var(--radius) 0; }
.step.done    { background: var(--emerald); color: var(--white); }
.step.active  { background: var(--navy);   color: var(--white); }

/* ── Utilities ──────────────────────────────────────────────── */
.text-muted   { color: var(--text-muted); }
.text-sm      { font-size: 12.5px; }
.text-xs      { font-size: 11px; }
.text-right   { text-align: right; }
.text-center  { text-align: center; }
.fw-700       { font-weight: 700; }
.fw-800       { font-weight: 800; }
.mt-4         { margin-top: 4px; }
.mt-8         { margin-top: 8px; }
.mt-12        { margin-top: 12px; }
.mt-16        { margin-top: 16px; }
.mt-20        { margin-top: 20px; }
.mt-24        { margin-top: 24px; }
.mb-12        { margin-bottom: 12px; }
.mb-16        { margin-bottom: 16px; }
.mb-20        { margin-bottom: 20px; }
.mb-24        { margin-bottom: 24px; }
.gap-8        { gap: 8px; }
.gap-12       { gap: 12px; }
.d-flex       { display: flex; }
.align-center { align-items: center; }
.flex-wrap    { flex-wrap: wrap; }
.ml-auto      { margin-left: auto; }
.hidden-sm    { }
.code         { font-family: 'Courier New', monospace; font-size: 12.5px; background: var(--light); padding: 2px 6px; border-radius: 4px; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 900px) {
    .sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-w);
    }
    .sidebar.mobile-open {
        transform: translateX(0);
    }
    .sidebar-overlay.active { display: block; }
    .main-area { margin-left: 0 !important; }
    .hidden-sm { display: none !important; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .form-grid-2, .form-grid-3 { grid-template-columns: 1fr; }
    .col-span-2 { grid-column: span 1; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .search-input { width: 200px; }
}

@media (max-width: 600px) {
    .main-content { padding: 14px; }
    .topnav { padding: 0 14px; }
    .stats-grid { grid-template-columns: 1fr; }
    .page-header { flex-direction: column; }
    .modal { max-width: 100%; }
    .data-table { font-size: 12px; }
    .data-table thead th, .data-table tbody td { padding: 9px 10px; }
}