/**
 * RMC360 ERP - Main Stylesheet
 */

:root {
    --primary: #1A3A5C;
    --primary-light: #234E7A;
    --accent: #0EA5E9;
    --success: #16A34A;
    --warning: #D97706;
    --danger: #DC2626;
    --bg-page: #F1F5F9;
    --bg-card: #FFFFFF;
    --bg-sidebar: #0F2942;
    --bg-sidebar-hover: #1A3A5C;
    --text-primary: #1E293B;
    --text-muted: #64748B;
    --text-light: #94A3B8;
    --border: #E2E8F0;
    --border-dark: #CBD5E1;
    --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.05);
    --shadow: 0 1px 3px 0 rgba(0,0,0,0.1), 0 1px 2px -1px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
    --radius: 8px;
    --radius-lg: 12px;
    --sidebar-width: 260px;
    --header-height: 60px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { font-size: 14px; }

body {
    font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-page);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
}

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

/* ─── Sidebar ───────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    color: #CBD5E1;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 1000;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 16px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    gap: 12px;
    position: sticky;
    top: 0;
    background: var(--bg-sidebar);
    z-index: 10;
}

.sidebar-logo {
    width: 36px;
    height: 36px;
    background: var(--accent);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: white;
    font-size: 16px;
}

.sidebar-brand {
    font-size: 18px;
    font-weight: 700;
    color: white;
}

.sidebar-brand span { color: var(--accent); }

.sidebar-nav { padding: 12px 0; }

.nav-section {
    padding: 16px 20px 6px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-light);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 20px;
    color: #CBD5E1;
    text-decoration: none;
    font-size: 13px;
    transition: all 0.2s;
    position: relative;
}

.nav-item:hover {
    background: var(--bg-sidebar-hover);
    color: white;
}

.nav-item.active {
    background: var(--bg-sidebar-hover);
    color: white;
    border-left: 3px solid var(--accent);
}

.nav-item svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.nav-badge {
    margin-left: auto;
    background: var(--danger);
    color: white;
    font-size: 10px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 10px;
    min-width: 18px;
    text-align: center;
}

.nav-badge.warning {
    background: var(--warning);
}

.nav-badge.success {
    background: var(--success);
}

/* ─── Submenu ───────────────────────────────────────── */
.has-submenu .submenu {
    display: none;
    background: rgba(0,0,0,0.2);
}

.has-submenu.open .submenu {
    display: block;
}

.submenu .nav-item {
    padding-left: 50px;
    font-size: 12px;
}

.submenu-toggle {
    margin-left: auto;
    transition: transform 0.2s;
}

.has-submenu.open .submenu-toggle {
    transform: rotate(180deg);
}

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

/* ─── Header ────────────────────────────────────────── */
.header {
    height: var(--header-height);
    background: 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;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    color: var(--text-primary);
}

.breadcrumbs {
    font-size: 12px;
    color: var(--text-muted);
}

.breadcrumbs a {
    color: var(--text-muted);
    text-decoration: none;
}

.breadcrumbs a:hover { color: var(--accent); }

.breadcrumbs .current {
    color: var(--text-primary);
    font-weight: 500;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-btn {
    position: relative;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: var(--text-muted);
    border-radius: 8px;
    transition: background 0.2s;
}

.header-btn:hover { background: var(--bg-page); }

.header-btn svg { width: 20px; height: 20px; }

.header-btn .badge {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 8px;
    height: 8px;
    background: var(--danger);
    border-radius: 50%;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding: 6px 12px;
    border-radius: 8px;
    transition: background 0.2s;
}

.user-menu:hover { background: var(--bg-page); }

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 13px;
}

.user-info { text-align: right; }

.user-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.user-role {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: capitalize;
}

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

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.page-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
}

.page-actions {
    display: flex;
    gap: 10px;
}

/* ─── Cards ─────────────────────────────────────────── */
.card {
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    margin-bottom: 20px;
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: 20px;
}

.card-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--border);
    background: #FAFBFC;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* ─── KPI Cards ─────────────────────────────────────── */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.kpi-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 20px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.2s, transform 0.2s;
}

.kpi-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.kpi-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.kpi-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.kpi-icon svg { width: 20px; height: 20px; }

.kpi-icon.blue { background: #DBEAFE; color: #1D4ED8; }
.kpi-icon.green { background: #DCFCE7; color: #15803D; }
.kpi-icon.amber { background: #FEF3C7; color: #B45309; }
.kpi-icon.red { background: #FEE2E2; color: #DC2626; }
.kpi-icon.teal { background: #CCFBF1; color: #0F766E; }
.kpi-icon.purple { background: #F3E8FF; color: #7C3AED; }

.kpi-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.kpi-value {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.kpi-trend {
    font-size: 12px;
    margin-top: 6px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.kpi-trend.up { color: var(--success); }
.kpi-trend.down { color: var(--danger); }

/* ─── Buttons ───────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 0 16px;
    height: 38px;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.2s;
    text-decoration: none;
    white-space: nowrap;
}

.btn svg { width: 16px; height: 16px; }

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

.btn-secondary {
    background: white;
    color: var(--text-primary);
    border-color: var(--border-dark);
}
.btn-secondary:hover { background: var(--bg-page); }

.btn-success {
    background: var(--success);
    color: white;
    border-color: var(--success);
}
.btn-success:hover { filter: brightness(1.1); }

.btn-danger {
    background: var(--danger);
    color: white;
    border-color: var(--danger);
}
.btn-danger:hover { filter: brightness(1.1); }

.btn-warning {
    background: var(--warning);
    color: white;
    border-color: var(--warning);
}
.btn-warning:hover { filter: brightness(1.1); }

.btn-ghost {
    background: transparent;
    color: var(--text-muted);
    border-color: transparent;
}
.btn-ghost:hover { background: var(--bg-page); color: var(--text-primary); }

.btn-sm { height: 32px; padding: 0 12px; font-size: 12px; }
.btn-lg { height: 44px; padding: 0 24px; font-size: 14px; }

/* ─── Forms ─────────────────────────────────────────── */
.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px 20px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-label {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.form-label .required {
    color: var(--danger);
    margin-left: 2px;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    height: 40px;
    padding: 0 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 13px;
    font-family: inherit;
    background: white;
    transition: border-color 0.2s, box-shadow 0.2s;
    color: var(--text-primary);
}

.form-textarea {
    height: auto;
    min-height: 80px;
    padding: 10px 12px;
    resize: vertical;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.form-input::placeholder { color: var(--text-light); }

.form-hint {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 4px;
}

.form-error {
    font-size: 11px;
    color: var(--danger);
    margin-top: 4px;
}

/* ─── Tables ────────────────────────────────────────── */
.data-table-wrapper {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.data-table thead th {
    background: #FAFBFC;
    padding: 10px 14px;
    text-align: left;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
    position: sticky;
    top: 0;
    z-index: 5;
}

.data-table tbody td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--border);
    color: var(--text-primary);
    vertical-align: middle;
}

.data-table tbody tr:last-child td { border-bottom: none; }

.data-table tbody tr:hover td { background: #FAFBFC; }

.data-table tbody tr:nth-child(even) td { background: #FAFBFC; }
.data-table tbody tr:nth-child(even):hover td { background: #F1F5F9; }

/* ─── Badges ────────────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 500;
    line-height: 1.4;
}

.badge-pending { background: #FEF3C7; color: #B45309; }
.badge-paid { background: #DCFCE7; color: #15803D; }
.badge-partial { background: #DBEAFE; color: #1D4ED8; }
.badge-overdue { background: #FEE2E2; color: #DC2626; }
.badge-cancelled { background: #F1F5F9; color: var(--text-muted); }
.badge-active { background: #DCFCE7; color: #15803D; }
.badge-inactive { background: #F1F5F9; color: var(--text-muted); }
.badge-approved { background: #CCFBF1; color: #0F766E; }

/* ─── Status Indicators ─────────────────────────────── */
.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 6px;
}

.status-dot.active { background: var(--success); }
.status-dot.pending { background: var(--warning); }
.status-dot.overdue { background: var(--danger); }
.status-dot.completed { background: var(--accent); }

/* ─── Alerts & Notifications ────────────────────────── */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    font-size: 13px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-success { background: #DCFCE7; color: #15803D; border: 1px solid #86EFAC; }
.alert-danger { background: #FEE2E2; color: #DC2626; border: 1px solid #FECACA; }
.alert-warning { background: #FEF3C7; color: #B45309; border: 1px solid #FDE68A; }
.alert-info { background: #DBEAFE; color: #1D4ED8; border: 1px solid #93C5FD; }

/* ─── Toast Notifications ───────────────────────────── */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    padding: 14px 18px;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 500;
    color: white;
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease;
    max-width: 360px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.warning { background: var(--warning); }
.toast.info { background: var(--accent); }

.toast.fade-out {
    animation: fadeOut 0.3s ease forwards;
}

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

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}

/* ─── Modal ─────────────────────────────────────────── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.modal {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.95);
    transition: transform 0.2s;
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    background: white;
    z-index: 10;
}

.modal-title {
    font-size: 16px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    padding: 4px;
    border-radius: 6px;
    transition: background 0.2s;
}

.modal-close:hover { background: var(--bg-page); }

.modal-body {
    padding: 20px;
}

.modal-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    position: sticky;
    bottom: 0;
    background: white;
}

.modal-lg { max-width: 900px; }
.modal-xl { max-width: 1200px; }

/* ─── Tabs ──────────────────────────────────────────── */
.tabs {
    display: flex;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 20px;
    overflow-x: auto;
}

.tab-btn {
    padding: 10px 18px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    white-space: nowrap;
    transition: color 0.2s;
}

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

.tab-btn.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ─── Filter Bar ────────────────────────────────────── */
.filter-bar {
    display: flex;
    gap: 12px;
    align-items: flex-end;
    flex-wrap: wrap;
    margin-bottom: 20px;
    padding: 16px;
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.filter-group label {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filter-group input,
.filter-group select {
    height: 36px;
    padding: 0 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 13px;
    min-width: 160px;
    background: white;
}

/* ─── Stats Row ─────────────────────────────────────── */
.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

.stat-box {
    background: white;
    padding: 16px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    text-align: center;
}

.stat-value {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ─── Chart Container ───────────────────────────────── */
.chart-container {
    position: relative;
    height: 300px;
}

.chart-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 20px;
}

.chart-card {
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    padding: 20px;
}

.chart-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

/* ─── Pagination ────────────────────────────────────── */
.pagination {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 6px;
    padding: 12px 0;
}

.pagination-btn {
    padding: 6px 12px;
    border: 1px solid var(--border);
    background: white;
    border-radius: var(--radius);
    font-size: 12px;
    cursor: pointer;
    color: var(--text-primary);
    transition: all 0.2s;
}

.pagination-btn:hover:not(:disabled) {
    background: var(--bg-page);
    border-color: var(--border-dark);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.pagination-info {
    font-size: 12px;
    color: var(--text-muted);
    margin-right: 12px;
}

/* ─── Loading ───────────────────────────────────────── */
.loading-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loading-overlay {
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 50;
    border-radius: var(--radius-lg);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ─── Empty State ───────────────────────────────────── */
.empty-state {
    text-align: center;
    padding: 48px 20px;
    color: var(--text-muted);
}

.empty-state svg {
    width: 48px;
    height: 48px;
    margin-bottom: 12px;
    color: var(--border-dark);
}

.empty-state h3 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.empty-state p {
    font-size: 13px;
}

/* ─── Print Styles ──────────────────────────────────── */
@media print {
    .sidebar, .header, .page-actions, .btn { display: none !important; }
    .main-content { margin-left: 0; }
    .page-content { padding: 0; }
    .card { border: 1px solid #ccc; box-shadow: none; }
}

/* ─── Responsive ────────────────────────────────────── */
@media (max-width: 1024px) {
    .kpi-grid { grid-template-columns: repeat(2, 1fr); }
    .chart-grid { grid-template-columns: 1fr; }
    .form-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
    }
    .menu-toggle {
        display: block;
    }
    .kpi-grid { grid-template-columns: 1fr; }
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    .filter-bar { flex-direction: column; align-items: stretch; }
    .filter-group input,
    .filter-group select { width: 100%; }
    .stats-row { grid-template-columns: repeat(2, 1fr); }
}

/* ─── Scrollbar ─────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-dark); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ─── Selection ─────────────────────────────────────── */
::selection {
    background: rgba(14, 165, 233, 0.2);
    color: var(--text-primary);
}