/* === CSS Variables === */
:root {
    --sidebar-width: 240px;
    --sidebar-bg: #0f1729;
    --sidebar-hover: #1a2540;
    --sidebar-active: #2563eb;
    --sidebar-text: #8896b3;
    --sidebar-text-active: #ffffff;
    --topbar-height: 64px;
    --color-primary: #2563eb;
    --color-primary-light: #3b82f6;
    --color-primary-dark: #1d4ed8;
    --color-success: #22c55e;
    --color-success-bg: #dcfce7;
    --color-success-soft: rgba(34,197,94,0.12);
    --color-warning: #f59e0b;
    --color-warning-bg: #fef3c7;
    --color-warning-soft: rgba(245,158,11,0.12);
    --color-danger: #ef4444;
    --color-danger-bg: #fee2e2;
    --color-danger-soft: rgba(239,68,68,0.12);
    --color-info: #06b6d4;
    --color-info-bg: #cffafe;
    --color-bg: #f1f5f9;
    --color-surface: #ffffff;
    --color-border: #e2e8f0;
    --color-text: #0f172a;
    --color-text-secondary: #475569;
    --color-text-muted: #94a3b8;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.08);
    --radius: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: var(--font);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
}

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

/* === Sidebar === */
.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    position: fixed;
    top: 0; left: 0; bottom: 0;
    display: flex;
    flex-direction: column;
    z-index: 200;
    overflow-y: auto;
}
.sidebar-brand {
    padding: 20px 20px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.sidebar-brand-icon {
    width: 36px; height: 36px;
    background: var(--color-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: white;
    font-weight: 700;
}
.sidebar-brand-text {
    font-size: 15px;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: -0.02em;
}
.sidebar-section {
    padding: 8px 20px 4px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #4a5578;
    margin-top: 12px;
}
.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 4px 8px 0;
}
.sidebar-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    border-radius: 8px;
    color: var(--sidebar-text);
    text-decoration: none;
    font-size: 13.5px;
    font-weight: 500;
    transition: all 0.15s ease;
}
.sidebar-link:hover {
    background: var(--sidebar-hover);
    color: #c8d3e8;
}
.sidebar-link.active {
    background: var(--sidebar-active);
    color: var(--sidebar-text-active);
}
.sidebar-link .icon {
    width: 20px;
    text-align: center;
    font-size: 14px;
    opacity: 0.7;
}
.sidebar-link.active .icon { opacity: 1; }
.sidebar-bottom {
    margin-top: auto;
    padding: 12px 8px 16px;
    border-top: 1px solid #1a2540;
}

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

/* === Top Bar === */
.topbar {
    height: var(--topbar-height);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    position: sticky;
    top: 0;
    z-index: 100;
}
.topbar-left { display: flex; align-items: center; gap: 16px; }
.topbar-search { position: relative; }
.topbar-search input {
    padding: 8px 12px 8px 36px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 13px;
    width: 280px;
    background: var(--color-bg);
    font-family: var(--font);
    transition: border-color 0.15s;
}
.topbar-search input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.08);
}
.topbar-search::before {
    content: "\1F50D";
    position: absolute;
    left: 10px; top: 50%;
    transform: translateY(-50%);
    font-size: 13px;
}
.topbar-right { display: flex; align-items: center; gap: 16px; }
.topbar-user {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text);
}
.topbar-avatar {
    width: 34px; height: 34px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 13px;
    font-weight: 600;
}

/* === Container === */
.container { max-width: 1200px; padding: 28px; }

/* === Page Header === */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}
.page-header h1 {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* === KPI Cards === */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}
.kpi-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 20px 22px;
    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-card .kpi-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--color-text-muted);
    margin-bottom: 8px;
}
.kpi-card .kpi-value-row {
    display: flex;
    align-items: baseline;
    gap: 10px;
}
.kpi-card .kpi-value {
    font-size: 26px;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
}
.kpi-card .kpi-badge {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    padding: 2px 8px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
}
.kpi-badge-success { background: var(--color-success-soft); color: var(--color-success); }
.kpi-badge-danger { background: var(--color-danger-soft); color: var(--color-danger); }
.kpi-badge-warning { background: var(--color-warning-soft); color: var(--color-warning); }
.kpi-badge-info { background: rgba(6,182,212,0.1); color: var(--color-info); }
.kpi-card .kpi-sub {
    font-size: 12px;
    color: var(--color-text-muted);
    margin-top: 6px;
}

/* === Card generic === */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: 20px;
    transition: box-shadow 0.2s;
}
.card:hover { box-shadow: var(--shadow-md); }
.card-header {
    padding: 16px 22px;
    border-bottom: 1px solid var(--color-border);
    font-weight: 600;
    font-size: 14px;
    color: var(--color-text);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.card-body { padding: 22px; }

/* === Tables === */
.table-wrapper { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th {
    background: transparent;
    padding: 10px 14px;
    text-align: left;
    font-weight: 500;
    color: var(--color-text-muted);
    font-size: 12px;
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap;
}
tbody td {
    padding: 11px 14px;
    border-bottom: 1px solid #f1f5f9;
    vertical-align: middle;
    color: var(--color-text-secondary);
}
tbody tr:hover { background: #f8fafc; }
tbody tr:last-child td { border-bottom: none; }
.text-right { text-align: right; }
.text-center { text-align: center; }
.text-nowrap { white-space: nowrap; }

/* === Badges === */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
}
.badge-success { background: var(--color-success-soft); color: var(--color-success); }
.badge-warning { background: var(--color-warning-soft); color: var(--color-warning); }
.badge-danger { background: var(--color-danger-soft); color: var(--color-danger); }
.badge-info { background: rgba(6,182,212,0.1); color: var(--color-info); }
.badge-primary { background: rgba(37,99,235,0.1); color: #2563eb; }
.badge-secondary { background: rgba(107,114,128,0.1); color: #6b7280; }
.margin-danger { color: var(--color-danger); font-weight: 600; }
.margin-warning { color: var(--color-warning); font-weight: 600; }
.margin-success { color: var(--color-success); font-weight: 600; }

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: none;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    font-family: var(--font);
    cursor: pointer;
    text-decoration: none;
    transition: all 0.15s;
    line-height: 1.4;
}
.btn-sm { padding: 5px 12px; font-size: 12px; border-radius: 6px; }
.btn-primary {
    background: var(--color-primary);
    color: white;
    box-shadow: 0 1px 2px rgba(37,99,235,0.3);
}
.btn-primary:hover {
    background: var(--color-primary-dark);
    box-shadow: 0 2px 8px rgba(37,99,235,0.35);
}
.btn-outline {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
}
.btn-outline:hover { background: var(--color-bg); color: var(--color-text); }
.btn-danger { background: var(--color-danger); color: white; }
.btn-danger:hover { background: #dc2626; }
.btn-success { background: var(--color-success); color: white; }
.btn-success:hover { background: #16a34a; }
.btn-block { display: flex; width: 100%; justify-content: center; }

/* === Forms === */
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 5px;
    color: var(--color-text-secondary);
}
.form-control {
    width: 100%;
    padding: 9px 14px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 13px;
    line-height: 1.5;
    font-family: var(--font);
    transition: all 0.15s;
    background: var(--color-surface);
    color: var(--color-text);
}
.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.08);
}
select.form-control { appearance: auto; }
.form-inline {
    display: flex;
    gap: 12px;
    align-items: flex-end;
    flex-wrap: wrap;
}
.form-inline .form-group { margin-bottom: 0; }

/* === Alerts === */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    font-size: 13px;
    font-weight: 500;
}
.alert-danger { background: var(--color-danger-bg); color: #b91c1c; border: 1px solid #fca5a5; }
.alert-warning { background: var(--color-warning-bg); color: #92400e; border: 1px solid #fcd34d; }
.alert-success { background: var(--color-success-bg); color: #166534; border: 1px solid #86efac; }
.alert-info { background: var(--color-info-bg); color: #0e7490; border: 1px solid #67e8f9; }

/* === Login Page === */
.login-page {
    background: var(--sidebar-bg);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
.login-container { width: 100%; max-width: 400px; padding: 24px; }
.login-card {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: 40px 32px;
}
.login-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-text);
    text-align: center;
    margin-bottom: 4px;
    letter-spacing: -0.02em;
}
.login-subtitle {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 14px;
    margin-bottom: 28px;
}

/* === Drop Zone === */
.drop-zone {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    padding: 48px 24px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--color-text-muted);
    background: var(--color-bg);
}
.drop-zone:hover, .drop-zone.drag-over {
    border-color: var(--color-primary);
    background: rgba(37,99,235,0.04);
    color: var(--color-primary);
}
.drop-zone .drop-icon { font-size: 40px; margin-bottom: 12px; }
.drop-zone .drop-text { font-size: 14px; font-weight: 500; }
.drop-zone .drop-hint { font-size: 12px; margin-top: 8px; }

/* === Chart Container === */
.chart-container {
    position: relative;
    width: 100%;
    max-height: 360px;
}

/* === P&L Report Table === */
.pnl-table { font-size: 14px; }
.pnl-table td { padding: 10px 16px; }
.pnl-table .pnl-header td {
    font-weight: 700;
    background: var(--color-bg);
    border-top: 2px solid var(--color-border);
}
.pnl-table .pnl-separator td { border-top: 2px solid var(--color-text); padding: 4px; }
.pnl-table .pnl-result td { font-weight: 700; font-size: 15px; background: #eff6ff; }
.pnl-table .pnl-subtotal td { font-weight: 600; background: #f8fafc; }

/* === Delta Indicators === */
.delta-positive { color: var(--color-success); }
.delta-positive::before { content: "+"; }
.delta-negative { color: var(--color-danger); }

/* === Sensitivity Slider === */
.slider-container {
    padding: 20px;
    background: var(--color-bg);
    border-radius: var(--radius);
    margin-bottom: 20px;
}
.slider-container label { font-weight: 600; margin-bottom: 10px; display: block; }
.slider-container input[type="range"] {
    width: 100%;
    -webkit-appearance: none;
    height: 6px;
    border-radius: 3px;
    background: var(--color-border);
    outline: none;
}
.slider-container input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px; height: 18px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
    box-shadow: 0 1px 4px rgba(37,99,235,0.3);
}
.slider-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-primary);
    text-align: center;
    margin-top: 8px;
}

/* === Grid Layouts === */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

/* === Import Mapping === */
.mapping-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid #f1f5f9;
}
.mapping-row .mapping-label { flex: 0 0 200px; font-weight: 500; font-size: 13px; }
.mapping-row select { flex: 1; }

/* === Timeline === */
.timeline { display: flex; flex-direction: column; gap: 2px; }
.timeline-item {
    display: flex; align-items: center; gap: 12px;
    padding: 6px 12px; font-size: 13px; border-radius: 8px;
}
.timeline-item:nth-child(even) { background: var(--color-bg); }
.timeline-date { flex: 0 0 100px; font-weight: 500; }
.timeline-values { display: flex; gap: 16px; flex: 1; }
.timeline-values span { min-width: 100px; }

/* === Status === */
.status-active { color: var(--color-success); font-weight: 500; }
.status-completed { color: var(--color-primary); font-weight: 500; }
.status-cancelled { color: var(--color-danger); font-weight: 500; }
.status-suspended { color: var(--color-warning); font-weight: 500; }
.status-planned { color: var(--color-info); font-weight: 500; }
.status-delivered { color: var(--color-success); font-weight: 500; }

/* === Responsive === */
@media (max-width: 768px) {
    .sidebar { display: none; }
    .main-content { margin-left: 0; }
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
    .kpi-grid { grid-template-columns: repeat(2, 1fr); }
    .form-inline { flex-direction: column; align-items: stretch; }
}

/* === Utilities === */
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.text-muted { color: var(--color-text-muted); }
.text-sm { font-size: 12px; }
.font-bold { font-weight: 700; }
.w-full { width: 100%; }

/* Sync spinner */
.sync-spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    vertical-align: middle;
    margin-right: 6px;
}
.alert .sync-spinner {
    border-color: rgba(6,182,212,0.2);
    border-top-color: var(--color-info);
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-top: 16px;
    flex-wrap: wrap;
}
.btn-sm {
    padding: 4px 10px;
    font-size: 13px;
    min-width: 32px;
    text-align: center;
}

/* Delta indicators */
.kpi-delta {
    font-size: 12px;
    font-weight: 600;
    margin-left: 6px;
    padding: 2px 6px;
    border-radius: 4px;
}
.delta-up {
    color: var(--color-danger);
    background: var(--color-danger-soft);
}
.delta-down {
    color: var(--color-success);
    background: var(--color-success-soft);
}
/* For income/profit: up is good */
.kpi-card:first-child .delta-up,
.kpi-card:nth-child(3) .delta-up {
    color: var(--color-success);
    background: var(--color-success-soft);
}
.kpi-card:first-child .delta-down,
.kpi-card:nth-child(3) .delta-down {
    color: var(--color-danger);
    background: var(--color-danger-soft);
}