/* ════════════════════════════════════════════════════════════
   TAC ERP — Design System
   ────────────────────────────────────────────────────────────
   Nguyên tắc: Sạch, vuông vắn, chuyên nghiệp. Không lòe loẹt.
   Canvas trắng, typography rõ ràng, flat design, sharp corners.
   ════════════════════════════════════════════════════════════ */

/* ── DESIGN TOKENS ── */
:root {
    /* Font */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Sidebar */
    --sidebar-w: 250px;
    --topbar-h: 52px;

    /* Brand & Accent */
    --color-primary: #0866FF;          /* Cobalt — CTA chính */
    --color-primary-deep: #0654d4;     /* Pressed state */
    --color-primary-soft: rgba(8,102,255,0.08); /* Background tint */

    /* Surface */
    --color-canvas: #ffffff;
    --color-surface: #f5f7fa;          /* Page background */
    --color-surface-soft: #f0f2f5;     /* Card nền phụ */
    --color-hairline: #ced0d4;         /* Input border */
    --color-hairline-soft: #e4e6eb;    /* Divider nhẹ */

    /* Text */
    --color-ink-deep: #1c1e21;         /* Heading chính */
    --color-ink: #050505;              /* Body text */
    --color-charcoal: #3a3b3c;         /* Text phụ */
    --color-slate: #65676b;            /* Caption, label */
    --color-steel: #8a8d91;            /* Muted text */
    --color-stone: #b0b3b8;            /* Disabled */

    /* Semantic */
    --color-success: #31a24c;
    --color-attention: #f0932b;
    --color-warning: #f7b928;
    --color-critical: #e41e3f;

    /* Radius — vuông vắn, chuyên nghiệp */
    --rounded-xs: 3px;
    --rounded-sm: 4px;
    --rounded-md: 6px;
    --rounded-lg: 8px;
    --rounded-xl: 10px;

    /* Spacing */
    --sp-xs: 4px;
    --sp-sm: 8px;
    --sp-md: 12px;
    --sp-base: 16px;
    --sp-lg: 20px;
    --sp-xl: 24px;
    --sp-2xl: 32px;
    --sp-3xl: 40px;

    /* Elevation (minimal) */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-sticky: 0 1px 4px rgba(20,22,26,0.12);
}

/* ── RESET ── */
* { box-sizing: border-box; }
body {
    font-family: var(--font-primary);
    font-size: 14px;
    line-height: 1.43;
    letter-spacing: -0.14px;
    color: var(--color-ink);
    background: var(--color-surface);
    margin: 0;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ════════════════════════════════════
   SIDEBAR — Dark, clean, compact
   ════════════════════════════════════ */
.erp-sidebar {
    position: fixed; top: 0; left: 0; bottom: 0;
    width: var(--sidebar-w);
    background: var(--color-ink-deep);
    color: #fff;
    overflow-y: auto;
    z-index: 1000;
    transition: transform 0.2s ease-out;
}
.sidebar-collapsed .erp-sidebar { transform: translateX(calc(-1 * var(--sidebar-w))); }
.sidebar-collapsed .erp-main { margin-left: 0; }

/* Scrollbar nhỏ gọn */
.erp-sidebar::-webkit-scrollbar { width: 4px; }
.erp-sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 4px; }

.erp-sidebar-brand {
    padding: 14px 16px;
    font-size: 15px; font-weight: 700;
    display: flex; align-items: center; gap: 10px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    letter-spacing: -0.2px;
}
.erp-sidebar-brand i { font-size: 18px; color: var(--color-primary); }

.erp-nav-group { margin-top: 4px; }
.erp-nav-group-title {
    padding: 16px 16px 6px;
    font-size: 11px; font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: rgba(255,255,255,0.3);
}

.erp-nav-item {
    display: flex; align-items: center; gap: 10px;
    padding: 8px 16px;
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    font-size: 13px; font-weight: 500;
    transition: all 0.15s ease-out;
    border-left: 2px solid transparent;
    margin: 1px 0;
}
.erp-nav-item:hover {
    background: rgba(255,255,255,0.06);
    color: rgba(255,255,255,0.9);
}
.erp-nav-item.active {
    background: rgba(8,102,255,0.12);
    color: #fff;
    border-left-color: var(--color-primary);
}
.erp-nav-item i { width: 18px; text-align: center; font-size: 13px; opacity: 0.7; }
.erp-nav-item.active i { opacity: 1; }

/* ════════════════════════════════════
   MAIN CONTENT
   ════════════════════════════════════ */
.erp-main {
    margin-left: var(--sidebar-w);
    min-height: 100vh;
    transition: margin-left 0.2s ease-out;
}

/* ── Topbar ── */
.erp-topbar {
    height: var(--topbar-h);
    background: var(--color-canvas);
    border-bottom: 1px solid var(--color-hairline-soft);
    display: flex; align-items: center;
    padding: 0 var(--sp-xl); gap: 12px;
    position: sticky; top: 0; z-index: 100;
}
.erp-sidebar-toggle {
    background: none; border: none; font-size: 16px;
    color: var(--color-slate); cursor: pointer; padding: 6px;
    border-radius: var(--rounded-sm);
}
.erp-sidebar-toggle:hover { background: var(--color-surface-soft); color: var(--color-ink); }

.erp-breadcrumb {
    flex: 1; font-size: 13px; color: var(--color-slate);
    font-weight: 400;
}
.erp-breadcrumb a { color: var(--color-primary); text-decoration: none; font-weight: 500; }
.erp-breadcrumb a:hover { text-decoration: underline; }
.erp-breadcrumb strong { color: var(--color-ink-deep); font-weight: 600; }

.erp-user-badge {
    font-size: 13px; color: var(--color-slate); font-weight: 500;
    display: flex; align-items: center; gap: 6px;
}

/* ── Content ── */
.erp-content { padding: var(--sp-xl); }

/* ════════════════════════════════════
   CARDS — Flat, clean border, no drama
   ════════════════════════════════════ */
.erp-card {
    background: var(--color-canvas);
    border: 1px solid var(--color-hairline-soft);
    border-radius: var(--rounded-lg);
    padding: var(--sp-xl);
    margin-bottom: var(--sp-lg);
}
.erp-card-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: var(--sp-lg); padding-bottom: var(--sp-base);
    border-bottom: 1px solid var(--color-hairline-soft);
}
.erp-card-title {
    font-size: 15px; font-weight: 600; letter-spacing: -0.2px;
    color: var(--color-ink-deep); margin: 0;
    display: flex; align-items: center; gap: 8px;
}
.erp-card-title i { color: var(--color-slate); font-size: 14px; }

/* ════════════════════════════════════
   TOOLBAR
   ════════════════════════════════════ */
.erp-toolbar {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: var(--sp-base); flex-wrap: wrap; gap: var(--sp-sm);
}
.erp-toolbar-left { display: flex; gap: 8px; flex-wrap: wrap; }
.erp-toolbar-right { display: flex; gap: 8px; }

/* ════════════════════════════════════
   BUTTONS — Sharp, clean, professional
   ════════════════════════════════════ */
.btn-erp-primary {
    background: var(--color-primary); color: #fff; border: none;
    padding: 8px 16px; border-radius: var(--rounded-sm);
    font-size: 13px; font-weight: 600; letter-spacing: -0.14px;
    display: inline-flex; align-items: center; gap: 6px;
    transition: background 0.15s ease-out; cursor: pointer;
    text-decoration: none;
}
.btn-erp-primary:hover { background: var(--color-primary-deep); color: #fff; }
.btn-erp-primary:active { transform: scale(0.98); }

.btn-erp-success {
    background: var(--color-ink-deep); color: #fff; border: none;
    padding: 8px 16px; border-radius: var(--rounded-sm);
    font-size: 13px; font-weight: 600; letter-spacing: -0.14px;
    display: inline-flex; align-items: center; gap: 6px;
    cursor: pointer; transition: background 0.15s ease-out;
    text-decoration: none;
}
.btn-erp-success:hover { background: var(--color-charcoal); color: #fff; }

.btn-erp-outline {
    background: transparent; color: var(--color-ink-deep);
    border: 1.5px solid var(--color-hairline);
    padding: 7px 14px; border-radius: var(--rounded-sm);
    font-size: 13px; font-weight: 600; letter-spacing: -0.14px;
    display: inline-flex; align-items: center; gap: 6px;
    cursor: pointer; transition: all 0.15s ease-out;
    text-decoration: none;
}
.btn-erp-outline:hover { background: var(--color-surface-soft); border-color: var(--color-slate); color: var(--color-ink-deep); }

.btn-erp-danger {
    background: transparent; color: var(--color-critical);
    border: 1.5px solid var(--color-critical);
    padding: 6px 12px; border-radius: var(--rounded-sm);
    font-size: 12px; font-weight: 600; cursor: pointer;
    transition: all 0.15s ease-out;
}
.btn-erp-danger:hover { background: var(--color-critical); color: #fff; }

.btn-erp-sm { padding: 6px 12px; font-size: 12px; }

/* ════════════════════════════════════
   FORMS — Clean, subtle borders
   ════════════════════════════════════ */
.erp-form .form-label {
    font-weight: 600; font-size: 13px; letter-spacing: -0.14px;
    color: var(--color-ink-deep); margin-bottom: 4px;
}
.erp-form .form-control, .erp-form .form-select {
    font-size: 14px; border-radius: var(--rounded-md);
    border: 1px solid var(--color-hairline);
    color: var(--color-ink);
    height: 40px;
    transition: border-color 0.15s ease-out, box-shadow 0.15s ease-out;
}
.erp-form .form-control:focus, .erp-form .form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px var(--color-primary-soft);
}
.erp-form textarea.form-control { height: auto; }

.erp-form-section {
    background: var(--color-surface);
    border: 1px solid var(--color-hairline-soft);
    border-radius: var(--rounded-lg);
    padding: var(--sp-lg);
    margin-bottom: var(--sp-lg);
}
.erp-form-section-title {
    font-size: 13px; font-weight: 700; letter-spacing: -0.14px;
    color: var(--color-ink-deep);
    margin-bottom: var(--sp-base); padding-bottom: var(--sp-sm);
    border-bottom: 1px solid var(--color-hairline-soft);
    display: flex; align-items: center; gap: 8px;
}
.erp-form-section-title i { color: var(--color-slate); font-size: 13px; }

/* ════════════════════════════════════
   BADGES — Squared, compact, subtle
   ════════════════════════════════════ */
.erp-badge {
    padding: 3px 8px; border-radius: var(--rounded-xs);
    font-size: 11px; font-weight: 700; letter-spacing: 0;
    display: inline-block;
}
.erp-badge-active { background: #e6f4ea; color: #1e7e34; }
.erp-badge-paused { background: #fef3cd; color: #856404; }
.erp-badge-terminated { background: #fde8e8; color: #9b1c1c; }
.erp-badge-draft { background: var(--color-surface-soft); color: var(--color-slate); }
.erp-badge-pending { background: #fff3e0; color: #e65100; }

/* ════════════════════════════════════
   TABLE — Bordered, professional
   ════════════════════════════════════ */
.erp-table { border-collapse: collapse; width: 100%; }
.erp-table thead th {
    background: #3d4f5f !important;
    font-size: 12px; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.3px;
    color: #fff !important;
    border: 1px solid #2d3d4d !important;
    padding: 10px 12px !important;
    white-space: nowrap;
}
.erp-table tbody td {
    padding: 9px 12px !important;
    font-size: 13px; vertical-align: middle;
    color: var(--color-ink);
    border: 1px solid var(--color-hairline-soft);
}
.erp-table tbody tr:nth-child(even) { background: #fafbfc; }
.erp-table tbody tr:hover { background: var(--color-primary-soft) !important; }

/* Bảng dùng với Bootstrap table-sm (CsmLevelPolicy, CsmMaster) */
.table.table-sm thead th {
    background: #3d4f5f !important;
    color: #fff !important;
    font-size: 12px; font-weight: 600;
    letter-spacing: 0.2px;
    border: 1px solid #2d3d4d !important;
    padding: 9px 10px !important;
    white-space: nowrap;
}
.table.table-sm tbody td {
    border: 1px solid var(--color-hairline-soft);
    padding: 8px 10px !important;
    vertical-align: middle;
}
.table.table-sm tbody tr:nth-child(even) { background: #fafbfc; }

/* Action buttons in table */
.erp-action-btns { display: flex; gap: 4px; }
.erp-action-btn {
    width: 30px; height: 30px;
    display: inline-flex; align-items: center; justify-content: center;
    border-radius: var(--rounded-sm);
    border: 1px solid var(--color-hairline-soft);
    background: var(--color-canvas); color: var(--color-slate);
    font-size: 12px; cursor: pointer;
    transition: all 0.15s ease-out;
    text-decoration: none;
}
.erp-action-btn:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.erp-action-btn.danger:hover { background: var(--color-critical); border-color: var(--color-critical); color: #fff; }

/* ════════════════════════════════════
   DATEPICKER (Flatpickr) — ERP styling
   ════════════════════════════════════ */
.erp-datepicker { cursor: pointer; }
.flatpickr-calendar {
    border-radius: var(--rounded-lg) !important;
    border: 1px solid var(--color-hairline-soft) !important;
    box-shadow: var(--shadow-md) !important;
    font-family: var(--font-primary) !important;
}
.flatpickr-day.selected,
.flatpickr-day.selected:hover {
    background: var(--color-primary) !important;
    border-color: var(--color-primary) !important;
}
.flatpickr-day:hover {
    background: var(--color-primary-soft) !important;
    border-color: var(--color-primary-soft) !important;
}

/* ════════════════════════════════════
   STAT CARDS — Flat, no shadow
   ════════════════════════════════════ */
.erp-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--sp-base); margin-bottom: var(--sp-lg);
}
.erp-stat-card {
    background: var(--color-canvas);
    border: 1px solid var(--color-hairline-soft);
    border-radius: var(--rounded-lg);
    padding: var(--sp-base) var(--sp-lg);
    display: flex; align-items: center; gap: 14px;
}
.erp-stat-icon {
    width: 40px; height: 40px; border-radius: var(--rounded-md);
    display: flex; align-items: center; justify-content: center;
    font-size: 16px;
}
.erp-stat-icon.blue { background: var(--color-primary-soft); color: var(--color-primary); }
.erp-stat-icon.green { background: #e6f4ea; color: var(--color-success); }
.erp-stat-icon.orange { background: #fff3e0; color: var(--color-attention); }
.erp-stat-icon.red { background: #fde8e8; color: var(--color-critical); }
.erp-stat-value { font-size: 20px; font-weight: 700; color: var(--color-ink-deep); line-height: 1; letter-spacing: -0.5px; }
.erp-stat-label { font-size: 12px; color: var(--color-slate); margin-top: 2px; font-weight: 500; }

/* ════════════════════════════════════
   TABS — Clean underline style
   ════════════════════════════════════ */
.nav-tabs { border-bottom: 1px solid var(--color-hairline-soft); }
.nav-tabs .nav-link {
    color: var(--color-slate); font-size: 13px; font-weight: 600;
    border: none; padding: 10px 16px;
    border-bottom: 2px solid transparent;
    transition: color 0.15s ease-out;
}
.nav-tabs .nav-link:hover { color: var(--color-ink-deep); border-color: transparent; }
.nav-tabs .nav-link.active {
    color: var(--color-primary); border-bottom-color: var(--color-primary);
    background: transparent;
}

/* ════════════════════════════════════
   LOADING
   ════════════════════════════════════ */
#erp-loading-overlay {
    display: none; position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(255,255,255,0.7);
    z-index: 9999;
    justify-content: center; align-items: center;
}
#erp-loading-overlay.show { display: flex; }

/* ════════════════════════════════════
   RESPONSIVE
   ════════════════════════════════════ */
@media (max-width: 768px) {
    .erp-sidebar { transform: translateX(calc(-1 * var(--sidebar-w))); }
    .erp-main { margin-left: 0; }
    body.sidebar-open .erp-sidebar { transform: translateX(0); }
    .erp-content { padding: var(--sp-base); }
    .erp-toolbar { flex-direction: column; align-items: stretch; }
}

/* ── CUSTOM PLACEHOLDER OPACITY ── */
.form-control::placeholder,
textarea.form-control::placeholder,
.form-select::placeholder {
    color: var(--color-steel) !important;
    opacity: 0.55 !important;
    font-weight: 400 !important;
}