/* ============================================================
   eOffice — Enterprise UI/UX Design System
   Áp dụng theo "ENTERPRISE UI/UX DESIGN STANDARD FOR CLAUDE v1.0"
   Design Token: Color / Typography / Spacing / Radius / Shadow
   ============================================================ */

/* ---------- 1. DESIGN TOKENS ---------- */
:root {
    /* Primary — Blue (Trust / Government / Technology) */
    --primary-50: #EFF6FF;
    --primary-100: #DBEAFE;
    --primary-200: #BFDBFE;
    --primary-300: #93C5FD;
    --primary-400: #60A5FA;
    --primary-500: #2563EB;
    --primary-600: #1D4ED8;
    --primary-700: #1E40AF;
    --primary-800: #1E3A8A;
    --primary-900: #172554;

    /* Secondary — Teal (Healthcare / Success / Growth) */
    --secondary-500: #0F766E;
    --secondary-600: #0D5F58;

    /* Semantic */
    --success: #22C55E;
    --success-bg: #ECFDF3;
    --warning: #F59E0B;
    --warning-bg: #FFFBEB;
    --danger: #DC2626;
    --danger-bg: #FEF2F2;
    --info: #0284C7;
    --info-bg: #F0F9FF;

    /* Neutral / Gray */
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;

    /* Radius — chỉ dùng đúng các giá trị chuẩn */
    --radius-xs: 2px;
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-base: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;

    /* Spacing — lưới 8px */
    --space-1: 8px;
    --space-2: 16px;
    --space-3: 24px;
    --space-4: 32px;
    --space-5: 40px;
    --space-6: 48px;
    --space-7: 64px;

    /* Shadow — Elevation */
    --shadow-1: 0 1px 2px rgba(17, 24, 39, .06);
    --shadow-2: 0 2px 8px rgba(17, 24, 39, .08);
    --shadow-3: 0 4px 16px rgba(17, 24, 39, .10);
    --shadow-4: 0 8px 24px rgba(17, 24, 39, .14);

    /* Border */
    --border-thin: 1px;
    --border-normal: 1.5px;
    --border-strong: 2px;

    /* Layout */
    --header-height: 64px;
    --sidebar-width: 280px;
    --sidebar-width-collapsed: 72px;
    --statusbar-height: 32px;
    --content-max-width: 1600px;

    /* Component height */
    --control-height-xs: 28px;
    --control-height-s: 32px;
    --control-height-m: 40px;
    --control-height-l: 48px;
    --control-height-xl: 56px;
}

/* ---------- 2. TYPOGRAPHY ---------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

html, body {
    font-family: "Inter", "Segoe UI", Roboto, Arial, sans-serif;
    font-size: 14px;
    line-height: 22px;
    color: var(--gray-800);
    background-color: var(--gray-50);
    -webkit-font-smoothing: antialiased;
}

h1, .text-display { font-size: 40px; font-weight: 700; line-height: 48px; }
h1.h1-heading, .h1 { font-size: 32px; font-weight: 700; line-height: 40px; }
h2, .h2 { font-size: 28px; font-weight: 700; line-height: 36px; }
h3, .h3 { font-size: 24px; font-weight: 600; line-height: 32px; }
h4, .h4 { font-size: 20px; font-weight: 600; line-height: 28px; }
h5, .h5 { font-size: 18px; font-weight: 600; line-height: 28px; }
h6, .h6 { font-size: 16px; font-weight: 600; line-height: 24px; }
.text-body-l { font-size: 16px; line-height: 24px; }
.text-body { font-size: 14px; line-height: 22px; }
.text-caption { font-size: 12px; line-height: 18px; color: var(--gray-500); }
.text-tiny { font-size: 11px; line-height: 16px; color: var(--gray-500); }

a { color: var(--primary-600); text-decoration: none; }
a:hover { color: var(--primary-700); }

/* ---------- 3. LAYOUT SHELL: HEADER ---------- */
.eof-header {
    height: var(--header-height);
    background: #fff;
    border-bottom: var(--border-thin) solid var(--gray-200);
    display: flex;
    align-items: center;
    padding: 0 var(--space-3);
    position: sticky;
    top: 0;
    z-index: 1030;
    box-shadow: var(--shadow-1);
}

.eof-header .eof-logo {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-700);
    display: flex;
    align-items: center;
    gap: var(--space-1);
    white-space: nowrap;
}

.eof-header .eof-search {
    max-width: 420px;
    width: 100%;
}

.eof-header .eof-search input {
    height: var(--control-height-m);
    border-radius: var(--radius-base);
    border: var(--border-thin) solid var(--gray-200);
    background: var(--gray-50);
    font-size: 14px;
    padding-left: 40px;
}

.eof-header .eof-search {
    position: relative;
}

.eof-header .eof-search i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
}

.eof-icon-btn {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-base);
    color: var(--gray-600);
    position: relative;
    border: none;
    background: transparent;
}

.eof-icon-btn:hover { background: var(--gray-100); color: var(--gray-800); }

.eof-notif-dot {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--danger);
    border: 2px solid #fff;
}

/* ---------- 4. LAYOUT SHELL: SIDEBAR ---------- */
.eof-shell {
    display: flex;
    min-height: calc(100vh - var(--header-height) - var(--statusbar-height));
}

.eof-sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
    background: #fff;
    border-right: var(--border-thin) solid var(--gray-200);
    transition: width .15s ease;
    overflow-x: hidden;
}

.eof-sidebar.collapsed { width: var(--sidebar-width-collapsed); }

.eof-sidebar .eof-nav-section {
    padding: var(--space-2) var(--space-2) var(--space-1);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .04em;
    color: var(--gray-400);
    text-transform: uppercase;
    white-space: nowrap;
}

.eof-sidebar.collapsed .eof-nav-section,
.eof-sidebar.collapsed .eof-nav-label,
.eof-sidebar.collapsed .eof-nav-caret { display: none; }

.eof-nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 10px var(--space-2);
    margin: 2px var(--space-1);
    border-radius: var(--radius-base);
    color: var(--gray-700);
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
}

.eof-nav-link i { font-size: 18px; width: 20px; text-align: center; color: var(--gray-500); flex-shrink: 0; }
.eof-nav-link:hover { background: var(--gray-100); color: var(--gray-900); }
.eof-nav-link.active { background: var(--primary-50); color: var(--primary-700); }
.eof-nav-link.active i { color: var(--primary-600); }

.eof-nav-group > .eof-nav-link { cursor: pointer; }
.eof-nav-caret { margin-left: auto; font-size: 12px; transition: transform .15s ease; }
.eof-nav-group.open .eof-nav-caret { transform: rotate(90deg); }
.eof-nav-children { display: none; padding-left: var(--space-2); }
.eof-nav-group.open .eof-nav-children { display: block; }
.eof-nav-children .eof-nav-link { font-size: 13px; padding-top: 8px; padding-bottom: 8px; }

.eof-main {
    flex: 1;
    min-width: 0;
    padding: var(--space-3);
    max-width: var(--content-max-width);
}

/* ---------- 5. BREADCRUMB ---------- */
.eof-breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--gray-500);
    margin-bottom: var(--space-2);
}

.eof-breadcrumb a { color: var(--gray-500); }
.eof-breadcrumb a:hover { color: var(--primary-600); }
.eof-breadcrumb .current { color: var(--gray-800); font-weight: 600; }
.eof-breadcrumb i { font-size: 11px; color: var(--gray-300); }

/* ---------- 6. STATUS BAR ---------- */
.eof-statusbar {
    height: var(--statusbar-height);
    background: var(--gray-900);
    color: var(--gray-300);
    font-size: 11px;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: 0 var(--space-3);
    position: sticky;
    bottom: 0;
    z-index: 1020;
}

.eof-statusbar .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--success); display: inline-block; margin-right: 4px; }
.eof-statusbar span { white-space: nowrap; }
.eof-statusbar .sep { color: var(--gray-600); }

/* ---------- 7. CARD ---------- */
.card {
    border: var(--border-thin) solid var(--gray-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-1);
}

.card-header {
    background-color: #fff;
    border-bottom: var(--border-thin) solid var(--gray-100);
    font-weight: 600;
    font-size: 15px;
    padding: var(--space-2) var(--space-3);
}

.card-body { padding: var(--space-3); }

/* ---------- 8. BUTTON ---------- */
.btn {
    border-radius: var(--radius-base);
    font-weight: 500;
    font-size: 14px;
    height: var(--control-height-m);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-1);
    padding: 0 var(--space-2);
}

.btn-sm { height: var(--control-height-s); font-size: 13px; padding: 0 var(--space-1); }
.btn-lg { height: var(--control-height-l); font-size: 15px; padding: 0 var(--space-3); }

.btn-primary { background-color: var(--primary-500); border-color: var(--primary-500); }
.btn-primary:hover, .btn-primary:focus { background-color: var(--primary-600); border-color: var(--primary-600); }

.btn-outline-primary { color: var(--primary-600); border-color: var(--primary-300); }
.btn-outline-primary:hover { background-color: var(--primary-500); border-color: var(--primary-500); }

.btn-success { background-color: var(--success); border-color: var(--success); }
.btn-danger, .btn-outline-danger:hover { background-color: var(--danger); border-color: var(--danger); }
.btn-outline-danger { color: var(--danger); border-color: #FCA5A5; }
.btn-info { background-color: var(--info); border-color: var(--info); color: #fff; }
.btn-warning { background-color: var(--warning); border-color: var(--warning); }

.btn-outline-secondary { color: var(--gray-600); border-color: var(--gray-300); }
.btn-outline-secondary:hover { background-color: var(--gray-600); border-color: var(--gray-600); }

/* ---------- 9. FORM CONTROL ---------- */
.form-control, .form-select {
    height: var(--control-height-m);
    border-radius: var(--radius-base);
    border: var(--border-thin) solid var(--gray-300);
    font-size: 14px;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-400);
    box-shadow: 0 0 0 3px var(--primary-100);
}

textarea.form-control { height: auto; }

.form-control-sm, .form-select-sm { height: var(--control-height-s); font-size: 13px; }

.form-label {
    font-weight: 600;
    font-size: 13px;
    color: var(--gray-700);
    margin-bottom: 6px;
}

::placeholder { color: var(--gray-400) !important; opacity: 1; }

/* ---------- 10. TABLE (DATA GRID) ---------- */
.table thead th {
    background-color: var(--gray-50);
    white-space: nowrap;
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .02em;
    color: var(--gray-500);
    border-bottom: var(--border-thin) solid var(--gray-200);
    padding: 12px var(--space-2);
}

.table tbody td {
    padding: 12px var(--space-2);
    font-size: 14px;
    vertical-align: middle;
    border-bottom: var(--border-thin) solid var(--gray-100);
}

.table-hover tbody tr:hover { background-color: var(--primary-50); }

/* ---------- 11. BADGE (STATUS) ---------- */
.badge {
    font-weight: 600;
    font-size: 12px;
    border-radius: var(--radius-sm);
    padding: 4px 10px;
}

.badge-status-draft { background-color: var(--gray-100); color: var(--gray-600); }
.badge-status-submitted { background-color: var(--warning-bg); color: #92400E; }
.badge-status-managerapproved { background-color: var(--info-bg); color: #075985; }
.badge-status-directorapproved { background-color: #F3E8FF; color: #6B21A8; }
.badge-status-assigned { background-color: #CFFAFE; color: #155E75; }
.badge-status-approved { background-color: var(--success-bg); color: #166534; }
.badge-status-rejected { background-color: var(--danger-bg); color: #991B1B; }
.badge-status-cancelled { background-color: var(--gray-100); color: var(--gray-600); }
.badge-status-completed { background-color: var(--success-bg); color: #166534; }

/* ---------- 12. TOOLBAR (CRUD) ---------- */
.eof-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
}

.eof-toolbar h4 { margin: 0; display: flex; align-items: center; gap: 10px; }
.eof-toolbar h4 i { color: var(--primary-600); }

/* ---------- 13. KPI CARD (Dashboard) ---------- */
.stat-card {
    border-radius: var(--radius-lg);
    color: #fff;
    padding: var(--space-3);
    box-shadow: var(--shadow-2);
}

.stat-card .stat-value { font-size: 32px; font-weight: 700; line-height: 40px; }
.stat-card .text-white-50 { opacity: .8; }

/* ---------- 14. LOGIN ---------- */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-700) 0%, var(--primary-900) 100%);
}

.login-card { max-width: 420px; width: 100%; border-radius: var(--radius-xl); border: none; box-shadow: var(--shadow-4); }

/* ---------- 15. MISC ---------- */
.pagination .page-link { border-radius: var(--radius-sm); margin: 0 2px; color: var(--gray-700); }
.pagination .page-item.active .page-link { background-color: var(--primary-500); border-color: var(--primary-500); }

.dropdown-menu { border-radius: var(--radius-lg); border: var(--border-thin) solid var(--gray-200); box-shadow: var(--shadow-3); }
.dropdown-item:active { background-color: var(--primary-500); }

footer.eof-footer { display: none; }

@media (max-width: 992px) {
    .eof-sidebar { position: fixed; left: -280px; top: var(--header-height); bottom: 0; z-index: 1040; transition: left .2s ease; }
    .eof-sidebar.mobile-open { left: 0; }
    .eof-main { padding: var(--space-2); }
    .mobile-backdrop {
        position: fixed;
        inset: var(--header-height) 0 0 0;
        background: rgba(17, 24, 39, .4);
        z-index: 1035;
    }
}