@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    /* Base Colors - Clean Enterprise Theme */
    --bg-color: #f1f5f9;
    --bg-surface: #ffffff;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
    --border-subtle: #f1f5f9;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;

    /* Corporate Brand Primary (Trustworthy Deep Blue) */
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #eff6ff;
    --primary-border: #bfdbfe;

    /* Semantic Feedback Colors */
    --success: #059669;
    --success-hover: #047857;
    --success-light: #ecfdf5;
    --success-border: #a7f3d0;
    --success-text: #065f46;

    --danger: #dc2626;
    --danger-hover: #b91c1c;
    --danger-light: #fef2f2;
    --danger-border: #fecaca;
    --danger-text: #991b1b;

    --warning: #d97706;
    --warning-hover: #b45309;
    --warning-light: #fffbeb;
    --warning-border: #fde68a;
    --warning-text: #92400e;

    --purple: #7c3aed;
    --purple-light: #f5f3ff;
    --purple-border: #ddd6fe;
    --purple-text: #5b21b6;

    /* Sidebar Dark Navy (Industry Standard: Stripe/Shopify/Jira) */
    --sidebar-bg: #0f172a;
    --sidebar-border: #1e293b;
    --sidebar-text: #94a3b8;
    --sidebar-text-hover: #f8fafc;
    --sidebar-active-bg: #1e293b;
    --sidebar-active-text: #ffffff;
    --sidebar-active-indicator: #38bdf8;

    /* Shadows & Radii */
    --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.08), 0 1px 2px -1px rgb(0 0 0 / 0.08);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.07);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.04);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    -webkit-font-smoothing: antialiased;
}

/* Background Blobs Removed */
.background-blobs, .blob {
    display: none !important;
}

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

/* =========================================
   SIDEBAR (Corporate Dark Slate)
   ========================================= */
.sidebar {
    width: 260px;
    min-width: 260px;
    height: 100vh;
    position: sticky;
    top: 0;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--sidebar-border);
    padding: 1.5rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    z-index: 100;
}

.glass-panel {
    background: var(--sidebar-bg);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.75rem;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--primary);
    color: white;
    font-size: 1.1rem;
    font-weight: 800;
    border-radius: var(--radius-md);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.4);
}

.logo h1 {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.3px;
    color: #ffffff;
}

/* Nav Menu */
.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.7rem 0.85rem;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--sidebar-text);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    text-align: left;
    transition: all 0.15s ease-in-out;
    width: 100%;
}

.nav-item .nav-svg {
    width: 18px;
    height: 18px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
    flex-shrink: 0;
    transition: stroke 0.15s ease;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--sidebar-text-hover);
}

.nav-item.active {
    background: var(--sidebar-active-bg);
    color: var(--sidebar-active-text);
    font-weight: 600;
    position: relative;
    border-left: 3px solid var(--sidebar-active-indicator);
}

/* Main Content Area */
.main-content {
    flex: 1;
    padding: 2rem 2.5rem;
    position: relative;
    max-width: 100%;
    overflow-y: auto;
}

.page-section {
    display: none;
    animation: fadeIn 0.25s ease-out forwards;
}

.page-section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* =========================================
   CARDS & CONTAINERS (Clean White Surfaces)
   ========================================= */
.glass-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    box-shadow: var(--shadow-sm);
}

.full-width {
    width: 100%;
}

.card-header {
    margin-bottom: 1.75rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}

.card-header h2 {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.3px;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.card-header p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* =========================================
   FORMS & INPUT CONTROLS
   ========================================= */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.input-row {
    display: flex;
    gap: 1.25rem;
    flex-wrap: wrap;
}

.input-col {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    flex: 1;
    min-width: 180px;
}

label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 600;
    letter-spacing: 0.2px;
}

input, select {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.65rem 0.85rem;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
    outline: none;
    box-shadow: var(--shadow-xs);
}

input:focus, select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

input[type=number]::-webkit-inner-spin-button, 
input[type=number]::-webkit-outer-spin-button { 
    -webkit-appearance: none; 
    margin: 0; 
}
input[type=number] {
    -moz-appearance: textfield;
}

/* =========================================
   BUTTONS (Clean Enterprise Solid Buttons)
   ========================================= */
button {
    border: none;
    border-radius: var(--radius-md);
    padding: 0.65rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
}

.btn-primary {
    background: var(--primary);
    color: #ffffff;
    box-shadow: var(--shadow-xs);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: #ffffff;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-xs);
}

.btn-secondary:hover {
    background: var(--bg-color);
    color: var(--text-primary);
    border-color: #cbd5e1;
}

.btn-text {
    background: transparent;
    color: var(--primary);
    padding: 0.4rem 0.75rem;
    font-size: 0.85rem;
}

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

/* =========================================
   RESULTS & KPI SUMMARY CARDS
   ========================================= */
.result-box {
    margin-top: 1.5rem;
    padding: 1.25rem;
    background: #ffffff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.hidden {
    display: none !important;
}

.result-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.result-item strong {
    color: var(--text-primary);
}

.result-item.highlight {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--success);
    margin-top: 1.25rem;
    padding-top: 1rem;
    border-top: 1px dashed var(--border-color);
}

.result-item.danger {
    color: var(--danger);
}

/* =========================================
   TABLES (Clean Accounting Data Grid)
   ========================================= */
.dates-table {
    width: 100%;
    margin-top: 1rem;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 0.875rem;
    background: #ffffff;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-xs);
}

.text-right { text-align: right !important; }
.text-center { text-align: center !important; }

.dates-table th, .dates-table td {
    padding: 0.7rem 0.85rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.dates-table th {
    color: #475569;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: #f8fafc;
    border-bottom: 1px solid #cbd5e1;
}

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

.dates-table tbody tr {
    transition: background-color 0.1s ease;
}

.dates-table tbody tr.alt-row {
    background-color: #fafafa;
}

.dates-table tbody tr:hover {
    background-color: #f1f5f9 !important;
}

.format-money {
    font-feature-settings: "tnum";
    font-variant-numeric: tabular-nums;
    font-family: 'Inter', -apple-system, monospace;
}

/* =========================================
   ACTION BUTTONS (TABLE)
   ========================================= */
.action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    padding: 0.3rem 0.65rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    transition: all 0.15s ease;
    border: 1px solid transparent;
    cursor: pointer;
    letter-spacing: 0.3px;
}

.action-btn svg {
    width: 13px;
    height: 13px;
}

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

.action-btn-primary:hover {
    background: var(--primary);
    color: #ffffff;
}

.action-btn-danger {
    background: var(--danger-light);
    color: var(--danger);
    border-color: var(--danger-border);
}

.action-btn-danger:hover {
    background: var(--danger);
    color: #ffffff;
}

.action-btn-warning {
    background: var(--warning-light);
    color: var(--warning-text);
    border-color: var(--warning-border);
}

.action-btn-warning:hover {
    background: var(--warning);
    color: #ffffff;
}

.action-btn-info {
    background: #e0f2fe;
    color: #0369a1;
    border-color: #bae6fd;
}

.action-btn-info:hover {
    background: #0284c7;
    color: #ffffff;
}

.action-btn-purple {
    background: var(--purple-light);
    color: var(--purple-text);
    border-color: var(--purple-border);
}

.action-btn-purple:hover {
    background: var(--purple);
    color: #ffffff;
}

/* =========================================
   MODALS (Clean High-Contrast Surfaces)
   ========================================= */
.modal {
    position: fixed; 
    z-index: 1000; 
    left: 0; 
    top: 0;
    width: 100%; 
    height: 100%; 
    overflow: auto;
    background-color: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(4px);
    display: flex; 
    align-items: center; 
    justify-content: center;
    padding: 1rem;
}

.modal.hidden { 
    display: none; 
}

.modal-content {
    background: #ffffff;
    border: 1px solid var(--border-color);
    padding: 2rem; 
    border-radius: var(--radius-xl);
    width: 90%; 
    max-width: 600px;
    position: relative;
    box-shadow: var(--shadow-xl);
    color: var(--text-primary);
}

.close-btn {
    color: var(--text-muted); 
    position: absolute;
    top: 1.25rem; 
    right: 1.5rem; 
    font-size: 24px; 
    font-weight: 600; 
    cursor: pointer;
    transition: color 0.15s ease;
    line-height: 1;
}

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

/* =========================================
   BADGES & PILLS
   ========================================= */
.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 3px 8px;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    line-height: 1.2;
    letter-spacing: 0.3px;
    white-space: nowrap;
}

.badge-warning {
    background: #fef3c7;
    color: #92400e;
    border: 1px solid #fde68a;
}

.badge-info {
    background: #e0f2fe;
    color: #0369a1;
    border: 1px solid #bae6fd;
}

.badge-purple {
    background: #f3e8ff;
    color: #6b21a8;
    border: 1px solid #e9d5ff;
}

.badge-success {
    background: #ecfdf5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.badge-danger {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.badge-slate {
    background: #f1f5f9;
    color: #334155;
    border: 1px solid #cbd5e1;
}

.badge-emerald {
    background: #ecfdf5;
    color: #047857;
    border: 1px solid #6ee7b7;
}

/* =========================================
   METRIC & KPI STAT CARDS
   ========================================= */
.metric-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.metric-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.25rem 1.35rem;
    box-shadow: var(--shadow-xs);
    position: relative;
    overflow: hidden;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

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

.metric-card-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.4rem;
}

.metric-card-value {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    font-feature-settings: "tnum";
    font-variant-numeric: tabular-nums;
}

.metric-card-sub {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.35rem;
}

.metric-card.hero-profit {
    grid-column: 1 / -1;
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border: 1.5px solid #86efac;
    box-shadow: var(--shadow-sm);
}

.metric-card.hero-profit .metric-card-label {
    color: #166534;
    font-weight: 700;
}

.metric-card.hero-profit .metric-card-value {
    font-size: 2rem;
    color: #15803d;
}

.metric-card.hero-profit .metric-card-sub {
    color: #166534;
}

/* Status dropdown in table */
.status-select {
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    outline: none;
    cursor: pointer;
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    transition: all 0.15s ease;
}

.status-select.status-paid {
    background-color: #ecfdf5;
    color: #047857;
    border-color: #a7f3d0;
}

.status-select.status-unpaid {
    background-color: #fef2f2;
    color: #b91c1c;
    border-color: #fecaca;
}

/* Employee row in create shift */
.employee-row {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 0.65rem;
}

.employee-row input {
    flex: 1;
}

/* =========================================
   CLICKABLE EMPLOYEE & QUICK VIEW MODAL
   ========================================= */
.clickable-emp-row {
    cursor: pointer;
    transition: background-color 0.15s ease;
}

.clickable-emp-row:hover {
    background-color: #eff6ff !important;
}

.clickable-emp-name {
    color: var(--primary);
    cursor: pointer;
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-color: rgba(37, 99, 235, 0.35);
    transition: all 0.15s ease;
}

.clickable-emp-name:hover {
    color: var(--primary-hover);
    text-decoration-color: var(--primary-hover);
}

.clickable-emp-badge {
    display: inline-block;
    padding: 2px 7px;
    border-radius: 4px;
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.15s ease;
    border: 1px solid var(--primary-border);
}

.clickable-emp-badge:hover {
    background: var(--primary);
    color: #ffffff;
}

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

/* =========================================
   RESPONSIVE DESIGN (MOBILE & TABLET)
   ========================================= */
@media (max-width: 860px) {
    .app-layout {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        min-width: 100%;
        height: auto;
        position: sticky;
        top: 0;
        padding: 0.75rem 1rem;
        gap: 0.75rem;
        border-right: none;
        border-bottom: 1px solid var(--sidebar-border);
        box-shadow: var(--shadow-sm);
    }

    .logo {
        padding: 0;
    }

    .nav-menu {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 0.35rem;
        -webkit-overflow-scrolling: touch;
        gap: 0.35rem;
    }

    .nav-menu::-webkit-scrollbar {
        height: 3px;
    }
    .nav-menu::-webkit-scrollbar-thumb {
        background: rgba(255, 255, 255, 0.2);
        border-radius: 3px;
    }

    .nav-item {
        white-space: nowrap;
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
    }

    .nav-item.active {
        border-left: none;
        border-bottom: 2px solid var(--sidebar-active-indicator);
        border-radius: var(--radius-sm);
    }

    .main-content {
        padding: 1rem;
    }

    .glass-card {
        padding: 1.25rem;
        border-radius: var(--radius-md);
    }

    .dates-table {
        font-size: 0.8rem;
    }

    .dates-table th, .dates-table td {
        padding: 0.5rem;
    }

    .modal-content {
        width: 95%;
        padding: 1.25rem;
    }
}