/* ============================================================
   SGI MANUFACTUR SYSTEM — Industrial Orange Theme
   Design System CSS v2.0
   Based on PRD Section 9 — UI/UX & Visual Design System
   ============================================================ */

/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ============================================================
   1. CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================================ */
:root {
    /* Brand Colors */
    --primary:        #E8650A;
    --primary-dark:   #C04E00;
    --primary-light:  #FFF3EA;
    --primary-mid:    #F5A05A;
    --primary-rgb:    232, 101, 10;

    /* Neutral Colors */
    --slate-dark:     #2C3E50;
    --slate-light:    #5D6D7E;
    --white:          #FFFFFF;
    --gray-1:         #F8F9FA;
    --gray-2:         #E9ECEF;
    --gray-3:         #DEE2E6;

    /* Semantic Colors */
    --success:        #28A745;
    --success-light:  #d4edda;
    --warning:        #FFC107;
    --warning-light:  #fff3cd;
    --danger:         #DC3545;
    --danger-light:   #f8d7da;
    --info:           #17A2B8;
    --info-light:     #d1ecf1;

    /* Typography */
    --font-main:      'Inter', 'Roboto', 'Arial', system-ui, sans-serif;
    --font-mono:      'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing (base 4px) */
    --space-1:  0.25rem;   /* 4px */
    --space-2:  0.5rem;    /* 8px */
    --space-3:  0.75rem;   /* 12px */
    --space-4:  1rem;      /* 16px */
    --space-5:  1.25rem;   /* 20px */
    --space-6:  1.5rem;    /* 24px */
    --space-8:  2rem;      /* 32px */
    --space-10: 2.5rem;    /* 40px */
    --space-12: 3rem;      /* 48px */
    --space-16: 4rem;      /* 64px */

    /* Sidebar */
    --sidebar-width:     260px;
    --sidebar-collapsed: 0px;
    --topbar-height:     64px;

    /* Shadows */
    --shadow-sm:  0 1px 3px rgba(0,0,0,0.06);
    --shadow-md:  0 2px 12px rgba(0,0,0,0.08);
    --shadow-lg:  0 8px 30px rgba(0,0,0,0.12);
    --shadow-xl:  0 16px 48px rgba(0,0,0,0.16);

    /* Border Radius */
    --radius-sm:  6px;
    --radius-md:  8px;
    --radius-lg:  12px;
    --radius-xl:  16px;
    --radius-full: 50%;

    /* Transitions */
    --transition-fast:   150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow:   350ms ease;
}

/* ============================================================
   2. RESET & BASE
   ============================================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 14px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-main);
    font-weight: 400;
    line-height: 1.6;
    color: var(--slate-dark);
    background: var(--gray-1);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

img { max-width: 100%; height: auto; }

/* ============================================================
   3. TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--slate-dark);
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.375rem; }
h3 { font-size: 1.125rem; }
h4 { font-size: 1rem; }
h5 { font-size: 0.875rem; }
h6 { font-size: 0.75rem; }

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--space-2);
}

.page-subtitle {
    font-size: 0.8125rem;
    color: var(--slate-light);
    margin-bottom: var(--space-6);
}

.doc-number {
    font-family: var(--font-mono);
    font-weight: 500;
    font-size: 0.8rem;
    color: var(--primary);
}

.text-muted { color: var(--slate-light) !important; }
.text-primary { color: var(--primary) !important; }
.text-success { color: var(--success) !important; }
.text-warning { color: var(--warning) !important; }
.text-danger { color: var(--danger) !important; }
.text-info { color: var(--info) !important; }

/* ============================================================
   4. APP LAYOUT
   ============================================================ */
.app-wrapper {
    display: flex;
    min-height: 100vh;
}

/* ── Sidebar ── */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--slate-dark);
    color: #fff;
    z-index: 1040;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-normal), width var(--transition-normal);
    overflow: hidden;
}

.sidebar-brand {
    background: var(--primary);
    padding: var(--space-5) var(--space-5);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-height: var(--topbar-height);
    flex-shrink: 0;
}

.sidebar-brand-icon {
    width: 36px;
    height: 36px;
    background: rgba(255,255,255,0.2);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    font-weight: 700;
    flex-shrink: 0;
}

.sidebar-brand-text {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-brand-text .brand-name {
    font-size: 0.9375rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.sidebar-brand-text .brand-sub {
    font-size: 0.625rem;
    font-weight: 400;
    opacity: 0.8;
    letter-spacing: 1px;
    text-transform: uppercase;
    white-space: nowrap;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-3) 0;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,0.15) transparent;
}

.sidebar-nav::-webkit-scrollbar { width: 4px; }
.sidebar-nav::-webkit-scrollbar-track { background: transparent; }
.sidebar-nav::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 4px; }

.nav-section-title {
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: rgba(255,255,255,0.4);
    padding: var(--space-4) var(--space-5) var(--space-2);
    white-space: nowrap;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-5);
    color: rgba(255,255,255,0.7);
    font-size: 0.8125rem;
    font-weight: 400;
    transition: all var(--transition-fast);
    cursor: pointer;
    border-left: 4px solid transparent;
    white-space: nowrap;
    text-decoration: none;
}

.nav-link:hover {
    background: rgba(255,255,255,0.06);
    color: #fff;
}

.nav-link.active {
    background: rgba(232, 101, 10, 0.12);
    color: #fff;
    border-left-color: var(--primary);
    font-weight: 500;
}

.nav-link i {
    width: 20px;
    text-align: center;
    font-size: 1rem;
    flex-shrink: 0;
    opacity: 0.8;
}

.nav-link.active i {
    color: var(--primary-mid);
    opacity: 1;
}

.nav-link .nav-label {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
}

.nav-link .nav-arrow {
    font-size: 0.625rem;
    transition: transform var(--transition-fast);
    opacity: 0.5;
}

.nav-item.open > .nav-link .nav-arrow {
    transform: rotate(90deg);
}

.nav-submenu {
    display: none;
    padding-left: 0;
    list-style: none;
    background: rgba(0,0,0,0.15);
}

.nav-item.open > .nav-submenu {
    display: block;
}

.nav-submenu .nav-link {
    padding-left: calc(var(--space-5) + 20px + var(--space-3));
    font-size: 0.78125rem;
    border-left: 4px solid transparent;
}

.nav-submenu .nav-link::before {
    content: '';
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
    flex-shrink: 0;
    transition: background var(--transition-fast);
}

.nav-submenu .nav-link:hover::before,
.nav-submenu .nav-link.active::before {
    background: var(--primary);
}

/* Sidebar User Panel */
.sidebar-user {
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-shrink: 0;
}

.sidebar-user-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 600;
    flex-shrink: 0;
}

.sidebar-user-info {
    overflow: hidden;
}

.sidebar-user-name {
    font-size: 0.8125rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user-role {
    font-size: 0.6875rem;
    color: rgba(255,255,255,0.5);
    white-space: nowrap;
}

/* ── Main Content ── */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: margin-left var(--transition-normal);
}

/* ── Topbar ── */
.topbar {
    position: sticky;
    top: 0;
    height: var(--topbar-height);
    background: var(--white);
    border-bottom: 1px solid var(--gray-2);
    display: flex;
    align-items: center;
    padding: 0 var(--space-6);
    gap: var(--space-4);
    z-index: 1030;
    box-shadow: var(--shadow-sm);
}

.topbar-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--slate-dark);
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.topbar-toggle:hover {
    background: var(--gray-1);
}

.topbar-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.8125rem;
    color: var(--slate-light);
    flex: 1;
}

.topbar-breadcrumb a {
    color: var(--slate-light);
}

.topbar-breadcrumb a:hover {
    color: var(--primary);
}

.topbar-breadcrumb .separator {
    font-size: 0.625rem;
    opacity: 0.5;
}

.topbar-breadcrumb .current {
    color: var(--slate-dark);
    font-weight: 500;
}

.topbar-search {
    position: relative;
    max-width: 280px;
}

.topbar-search input {
    width: 100%;
    height: 38px;
    padding: 0 var(--space-4) 0 var(--space-10);
    border: 1px solid var(--gray-3);
    border-radius: var(--radius-xl);
    font-family: var(--font-main);
    font-size: 0.8125rem;
    background: var(--gray-1);
    transition: all var(--transition-fast);
    color: var(--slate-dark);
}

.topbar-search input::placeholder {
    color: var(--slate-light);
}

.topbar-search input:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.1);
}

.topbar-search i {
    position: absolute;
    left: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    color: var(--slate-light);
    font-size: 0.875rem;
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.topbar-btn {
    position: relative;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: none;
    color: var(--slate-light);
    font-size: 1.125rem;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.topbar-btn:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.topbar-btn .badge-dot {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 8px;
    height: 8px;
    background: var(--danger);
    border-radius: var(--radius-full);
    border: 2px solid var(--white);
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    cursor: pointer;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-lg);
    transition: background var(--transition-fast);
}

.topbar-user:hover {
    background: var(--gray-1);
}

.topbar-user-avatar {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.8125rem;
    font-weight: 600;
}

.topbar-user-info {
    display: flex;
    flex-direction: column;
}

.topbar-user-name {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--slate-dark);
}

.topbar-user-role {
    font-size: 0.6875rem;
    color: var(--slate-light);
}

/* ── Content Area ── */
.content-area {
    flex: 1;
    padding: var(--space-6);
}

.content-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.content-header-left {
    flex: 1;
}

.content-header-actions {
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
}

/* ============================================================
   5. CARDS
   ============================================================ */
.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: none;
    overflow: hidden;
    transition: box-shadow var(--transition-normal);
}

.card:hover {
    box-shadow: var(--shadow-lg);
}

.card-header {
    padding: var(--space-5) var(--space-5);
    border-bottom: 1px solid var(--gray-2);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: transparent;
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--slate-dark);
    margin: 0;
}

.card-body {
    padding: var(--space-5);
}

.card-footer {
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--gray-2);
    background: var(--gray-1);
}

/* KPI Stat Card */
.stat-card {
    position: relative;
    padding: var(--space-5);
    border-radius: var(--radius-lg);
    background: var(--white);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary);
}

.stat-card.stat-success::before { background: var(--success); }
.stat-card.stat-warning::before { background: var(--warning); }
.stat-card.stat-danger::before  { background: var(--danger); }
.stat-card.stat-info::before    { background: var(--info); }

.stat-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--space-3);
}

.stat-card-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    background: var(--primary-light);
    color: var(--primary);
}

.stat-card.stat-success .stat-card-icon { background: var(--success-light); color: var(--success); }
.stat-card.stat-warning .stat-card-icon { background: var(--warning-light); color: var(--warning); }
.stat-card.stat-danger .stat-card-icon  { background: var(--danger-light); color: var(--danger); }
.stat-card.stat-info .stat-card-icon    { background: var(--info-light); color: var(--info); }

.stat-card-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--slate-dark);
    line-height: 1.2;
}

.stat-card-label {
    font-size: 0.78125rem;
    color: var(--slate-light);
    margin-top: var(--space-1);
}

.stat-card-trend {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-size: 0.75rem;
    font-weight: 500;
    margin-top: var(--space-2);
    padding: 2px var(--space-2);
    border-radius: var(--radius-sm);
}

.stat-card-trend.up {
    color: var(--success);
    background: var(--success-light);
}

.stat-card-trend.down {
    color: var(--danger);
    background: var(--danger-light);
}

/* ============================================================
   6. TABLES
   ============================================================ */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    background: var(--white);
}

.sgi-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8125rem;
}

.sgi-table thead th {
    background: var(--primary);
    color: #fff;
    font-weight: 600;
    padding: var(--space-3) var(--space-4);
    text-align: left;
    white-space: nowrap;
    position: sticky;
    top: 0;
    z-index: 10;
    font-size: 0.78125rem;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.sgi-table thead th:first-child {
    border-radius: var(--radius-lg) 0 0 0;
}

.sgi-table thead th:last-child {
    border-radius: 0 var(--radius-lg) 0 0;
}

.sgi-table tbody tr {
    border-bottom: 1px solid var(--gray-2);
    transition: background var(--transition-fast);
}

.sgi-table tbody tr:nth-child(even) {
    background: var(--gray-1);
}

.sgi-table tbody tr:hover {
    background: var(--primary-light);
}

.sgi-table tbody td {
    padding: var(--space-3) var(--space-4);
    vertical-align: middle;
    color: var(--slate-dark);
}

.sgi-table .col-actions {
    white-space: nowrap;
    text-align: center;
    width: 120px;
}

/* ============================================================
   7. BUTTONS
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    font-family: var(--font-main);
    font-size: 0.8125rem;
    font-weight: 500;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
    line-height: 1.5;
}

.btn:active {
    transform: scale(0.97);
}

.btn-sm {
    padding: var(--space-1) var(--space-3);
    font-size: 0.75rem;
}

.btn-lg {
    padding: var(--space-3) var(--space-6);
    font-size: 0.9375rem;
}

/* Primary */
.btn-primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: #fff;
    box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.35);
}

/* Secondary / Outline */
.btn-secondary {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn-secondary:hover {
    background: var(--primary);
    color: #fff;
}

/* Danger */
.btn-danger {
    background: var(--danger);
    color: #fff;
    border-color: var(--danger);
}

.btn-danger:hover {
    background: #c82333;
    border-color: #c82333;
    color: #fff;
}

/* Ghost */
.btn-ghost {
    background: transparent;
    color: var(--slate-dark);
    border-color: var(--gray-3);
}

.btn-ghost:hover {
    background: var(--gray-1);
    border-color: var(--slate-light);
}

/* Success */
.btn-success {
    background: var(--success);
    color: #fff;
    border-color: var(--success);
}

.btn-success:hover {
    background: #218838;
    border-color: #218838;
    color: #fff;
}

/* Icon Button */
.btn-icon {
    width: 34px;
    height: 34px;
    padding: 0;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
}

.btn-icon.btn-icon-sm {
    width: 28px;
    height: 28px;
    font-size: 0.75rem;
}

/* ============================================================
   8. BADGES / STATUS
   ============================================================ */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    font-size: 0.6875rem;
    font-weight: 600;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    line-height: 1.4;
}

.badge-primary   { background: var(--primary-light); color: var(--primary); }
.badge-success   { background: var(--success-light); color: var(--success); }
.badge-warning   { background: var(--warning-light); color: #856404; }
.badge-danger    { background: var(--danger-light); color: var(--danger); }
.badge-info      { background: var(--info-light); color: #0c5460; }
.badge-secondary { background: var(--gray-2); color: var(--slate-light); }

.badge-dot::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

/* ============================================================
   9. FORMS
   ============================================================ */
.form-group {
    margin-bottom: var(--space-4);
}

.form-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--slate-dark);
    margin-bottom: var(--space-1);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-label .required {
    color: var(--danger);
}

.form-control {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    font-family: var(--font-main);
    font-size: 0.875rem;
    color: var(--slate-dark);
    background: var(--white);
    border: 1.5px solid var(--gray-3);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    line-height: 1.5;
}

.form-control::placeholder {
    color: var(--slate-light);
    opacity: 0.6;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.12);
}

.form-control.is-invalid {
    border-color: var(--danger);
}

.form-control.is-valid {
    border-color: var(--success);
}

.invalid-feedback {
    font-size: 0.75rem;
    color: var(--danger);
    margin-top: var(--space-1);
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23E8650A' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

/* ============================================================
   10. PAGINATION
   ============================================================ */
.pagination-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--gray-2);
    flex-wrap: wrap;
    gap: var(--space-3);
}

.pagination-info {
    font-size: 0.8125rem;
    color: var(--slate-light);
}

.pagination {
    display: flex;
    gap: 4px;
    list-style: none;
}

.pagination .page-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    font-size: 0.8125rem;
    color: var(--slate-dark);
    background: var(--white);
    border: 1px solid var(--gray-3);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.pagination .page-link:hover {
    background: var(--primary-light);
    border-color: var(--primary);
    color: var(--primary);
}

.pagination .page-link.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

/* ============================================================
   11. TOAST / NOTIFICATION
   ============================================================ */
.toast-container {
    position: fixed;
    top: var(--space-5);
    right: var(--space-5);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.toast {
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-md);
    background: var(--white);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: 0.8125rem;
    min-width: 300px;
    max-width: 400px;
    border-left: 4px solid var(--primary);
    animation: slideInRight var(--transition-normal) ease;
}

.toast.toast-success { border-left-color: var(--success); }
.toast.toast-warning { border-left-color: var(--warning); }
.toast.toast-error   { border-left-color: var(--danger); }

.toast-close {
    margin-left: auto;
    background: none;
    border: none;
    color: var(--slate-light);
    cursor: pointer;
    font-size: 1rem;
    padding: 0 4px;
}

@keyframes slideInRight {
    from { transform: translateX(100%); opacity: 0; }
    to   { transform: translateX(0); opacity: 1; }
}

@keyframes slideOutRight {
    from { transform: translateX(0); opacity: 1; }
    to   { transform: translateX(100%); opacity: 0; }
}

/* ============================================================
   12. UTILITY HELPERS
   ============================================================ */
.d-flex { display: flex; }
.d-grid { display: grid; }
.flex-wrap { flex-wrap: wrap; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }

.p-4 { padding: var(--space-4); }
.p-5 { padding: var(--space-5); }

.fw-500 { font-weight: 500; }
.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }
.fs-sm { font-size: 0.78125rem; }

.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-nowrap { white-space: nowrap; }

.w-100 { width: 100%; }
.rounded-lg { border-radius: var(--radius-lg); }

/* Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
}

.chart-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-6);
}

.table-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
}

/* ============================================================
   13. SIDEBAR OVERLAY (Mobile)
   ============================================================ */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1035;
    backdrop-filter: blur(2px);
}

.sidebar-overlay.active {
    display: block;
}

/* ============================================================
   14. LOGIN PAGE
   ============================================================ */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a252f 0%, var(--slate-dark) 50%, #2C3E50 100%);
    position: relative;
    overflow: hidden;
}

.login-page::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(var(--primary-rgb), 0.15), transparent 70%);
    top: -100px;
    right: -100px;
    border-radius: 50%;
    animation: float 8s ease-in-out infinite;
}

.login-page::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(var(--primary-rgb), 0.1), transparent 70%);
    bottom: -80px;
    left: -80px;
    border-radius: 50%;
    animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50%      { transform: translateY(-30px); }
}

.login-card {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 420px;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--space-10);
    margin: var(--space-5);
}

.login-brand {
    text-align: center;
    margin-bottom: var(--space-8);
}

.login-brand-logo {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--radius-lg);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-4);
    box-shadow: 0 8px 24px rgba(var(--primary-rgb), 0.3);
}

.login-brand h1 {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--slate-dark);
    margin-bottom: var(--space-1);
}

.login-brand p {
    font-size: 0.8125rem;
    color: var(--slate-light);
}

.login-form .form-group {
    margin-bottom: var(--space-5);
}

.login-form .form-control {
    height: 46px;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
}

.login-form .btn-login {
    width: 100%;
    height: 46px;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    margin-top: var(--space-2);
}

.login-footer {
    text-align: center;
    margin-top: var(--space-6);
    font-size: 0.75rem;
    color: var(--slate-light);
}

.alert {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    margin-bottom: var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.alert-danger {
    background: var(--danger-light);
    color: var(--danger);
    border: 1px solid rgba(220,53,69,0.2);
}

.alert-success {
    background: var(--success-light);
    color: var(--success);
    border: 1px solid rgba(40,167,69,0.2);
}

/* ============================================================
   15. DROPDOWN MENU
   ============================================================ */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 200px;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-2);
    padding: var(--space-2) 0;
    z-index: 1050;
    display: none;
    animation: fadeIn var(--transition-fast);
}

.dropdown-menu.show {
    display: block;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-4);
    font-size: 0.8125rem;
    color: var(--slate-dark);
    cursor: pointer;
    transition: background var(--transition-fast);
    text-decoration: none;
}

.dropdown-item:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.dropdown-item i {
    width: 16px;
    text-align: center;
    opacity: 0.7;
}

.dropdown-divider {
    height: 1px;
    background: var(--gray-2);
    margin: var(--space-2) 0;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-4px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   16. EMPTY STATE
   ============================================================ */
.empty-state {
    text-align: center;
    padding: var(--space-12) var(--space-6);
    color: var(--slate-light);
}

.empty-state i {
    font-size: 3rem;
    color: var(--gray-3);
    margin-bottom: var(--space-4);
}

.empty-state h3 {
    font-size: 1.125rem;
    color: var(--slate-dark);
    margin-bottom: var(--space-2);
}

.empty-state p {
    font-size: 0.8125rem;
    max-width: 400px;
    margin: 0 auto var(--space-5);
}

/* ============================================================
   17. FILTER BAR
   ============================================================ */
.filter-bar {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-5);
    flex-wrap: wrap;
}

.filter-bar .form-control {
    max-width: 200px;
    height: 36px;
    font-size: 0.78125rem;
}

.filter-bar .btn {
    height: 36px;
}

/* ============================================================
   18. PROGRESS BAR
   ============================================================ */
.progress-bar-container {
    height: 8px;
    background: var(--gray-2);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--primary-mid));
    border-radius: 4px;
    transition: width var(--transition-slow);
}

.progress-bar-fill.success { background: linear-gradient(90deg, var(--success), #34ce57); }
.progress-bar-fill.warning { background: linear-gradient(90deg, var(--warning), #ffcd39); }
.progress-bar-fill.danger  { background: linear-gradient(90deg, var(--danger), #e4606d); }

/* ============================================================
   19. RESPONSIVE
   ============================================================ */
/* Tablet */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .topbar-toggle {
        display: flex;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .chart-grid {
        grid-template-columns: 1fr;
    }

    .table-grid {
        grid-template-columns: 1fr;
    }

    .topbar-search {
        display: none;
    }
}

/* Mobile */
@media (max-width: 768px) {
    html {
        font-size: 13px;
    }

    .content-area {
        padding: var(--space-4);
    }

    .content-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .content-header-actions {
        width: 100%;
    }

    .content-header-actions .btn {
        flex: 1;
        justify-content: center;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-3);
    }

    .topbar {
        padding: 0 var(--space-4);
    }

    .topbar-user-info {
        display: none;
    }

    .pagination-wrapper {
        flex-direction: column;
        align-items: center;
    }

    .login-card {
        padding: var(--space-6);
        margin: var(--space-4);
    }

    .filter-bar {
        flex-direction: column;
    }

    .filter-bar .form-control {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}

/* Desktop XL */
@media (min-width: 1440px) {
    html {
        font-size: 15px;
    }

    .content-area {
        max-width: 1400px;
    }

    :root {
        --sidebar-width: 260px;
    }
}

/* ============================================================
   20. CHART CONTAINER
   ============================================================ */
.chart-container {
    width: 100%;
    min-height: 300px;
}

/* ============================================================
   21. TABS
   ============================================================ */
.tabs {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--gray-2);
    margin-bottom: var(--space-5);
}

.tab-link {
    padding: var(--space-3) var(--space-5);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--slate-light);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all var(--transition-fast);
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
    font-family: var(--font-main);
}

.tab-link:hover {
    color: var(--primary);
}

.tab-link.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* ============================================================
   22. SCROLLBAR GLOBAL
   ============================================================ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--gray-1); }
::-webkit-scrollbar-thumb { background: var(--gray-3); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--slate-light); }