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

/* ==========================================================================
   MODERN SAAS DESIGN SYSTEM
   ========================================================================== */

:root {
    /* Colors */
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: rgba(37, 99, 235, 0.1);
    
    --success: #16a34a;
    --success-hover: #15803d;
    --success-light: rgba(22, 163, 74, 0.1);
    
    --danger: #dc2626;
    --danger-hover: #b91c1c;
    --danger-light: rgba(220, 38, 38, 0.1);
    
    --warning: #f59e0b;
    --warning-hover: #d97706;
    --warning-light: rgba(245, 158, 11, 0.1);
    
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    
    --background: #f8fafc;
    --card-background: #ffffff;
    --border-color: #e2e8f0;
    --sidebar-bg: #1e293b; /* Keeping dark sidebar theme */
    
    /* Spacing */
    --space-xs: 8px;
    --space-sm: 12px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* --- TYPOGRAPHY --- */
h1, h2, h3, h4, h5, h6 {
    margin-top: 0;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}
.saas-page-title {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.2;
}
.saas-section-title {
    font-size: 20px;
    font-weight: 600;
}
.saas-card-title {
    font-size: 16px;
    font-weight: 600;
}
.saas-text {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 400;
}
.saas-text-sm {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 400;
}

/* --- CARDS --- */
.saas-card, .card, .widget-card, .employee-summary-card, .chart-card {
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    margin-bottom: var(--space-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.saas-card-body, .card-body, .widget-body {
    padding: var(--space-lg);
    flex: 1 1 auto;
}
.saas-card-header, .card-header, .widget-header {
    padding: var(--space-lg) var(--space-lg) var(--space-md);
    border-bottom: 1px solid var(--border-color);
    background: transparent;
}
.saas-card-footer, .card-footer {
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--border-color);
    background: transparent;
}

/* --- BUTTONS --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 44px;
    padding: 0 20px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 10px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    font-family: 'Inter', sans-serif;
    white-space: nowrap;
}
.btn:hover {
    transform: translateY(-1px);
}
.btn-sm {
    height: 36px;
    padding: 0 16px;
    font-size: 13px;
    border-radius: 8px;
}
.btn-primary {
    background-color: var(--primary);
    color: #fff;
}
.btn-primary:hover { background-color: var(--primary-hover); color: #fff;}
.btn-success {
    background-color: var(--success);
    color: #fff;
}
.btn-success:hover { background-color: var(--success-hover); color: #fff;}
.btn-danger {
    background-color: var(--danger);
    color: #fff;
}
.btn-danger:hover { background-color: var(--danger-hover); color: #fff;}
.btn-secondary {
    background-color: var(--text-secondary);
    color: #fff;
}
.btn-secondary:hover { background-color: #475569; color: #fff; }
.btn-outline-secondary {
    background-color: transparent;
    border-color: var(--border-color);
    color: var(--text-secondary);
}
.btn-outline-secondary:hover {
    background-color: var(--background);
    color: var(--text-primary);
}
.btn-ghost {
    background-color: transparent;
    color: var(--primary);
}
.btn-ghost:hover {
    background-color: var(--primary-light);
}

/* --- FORM ELEMENTS --- */
.form-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}
.form-control, .saas-input, .saas-select {
    display: block;
    width: 100%;
    height: 44px;
    padding: 0 16px;
    font-size: 14px;
    font-weight: 400;
    font-family: 'Inter', sans-serif;
    color: var(--text-primary);
    background-color: #fff;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-sizing: border-box;
    transition: all 0.2s ease;
}
.form-control:focus, .saas-input:focus, .saas-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}
textarea.form-control, textarea.saas-input {
    min-height: 120px;
    padding: 12px 16px;
    height: auto;
}

/* --- TABS --- */
.saas-tabs, .tabs-container {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}
.saas-tab, .tab-item, .my-tab-btn {
    padding: var(--space-sm) 0;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.2s ease;
}
.saas-tab:hover, .tab-item:hover, .my-tab-btn:hover {
    color: var(--text-primary);
}
.saas-tab.active, .tab-item.active, .my-tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    font-weight: 600;
}

/* --- BADGES --- */
.badge, .saas-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 600;
    border-radius: 9999px;
    line-height: 1;
}
.badge-success { background-color: var(--success-light); color: var(--success); }
.badge-danger { background-color: var(--danger-light); color: var(--danger); }
.badge-warning { background-color: var(--warning-light); color: var(--warning); }
.badge-primary { background-color: var(--primary-light); color: var(--primary); }

/* --- MODALS --- */
.modal, .saas-modal-backdrop {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(4px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
    box-sizing: border-box;
}
.modal-content, .saas-modal {
    background: var(--card-background);
    border-radius: 16px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    width: 100%;
    max-width: 700px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}
.modal-content.modal-lg, .saas-modal.modal-lg {
    max-width: 900px;
}
.modal-header, .saas-modal-header {
    padding: var(--space-xl);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-color);
}
.modal-title, .modal-header h2, .saas-modal-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}
.modal-subtitle, .saas-modal-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 4px;
}
.modal-body, .saas-modal-body {
    padding: var(--space-xl);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}
.modal-footer, .saas-modal-footer {
    padding: var(--space-xl);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: var(--space-md);
    background: #fbfbfc;
}

/* --- TABLES --- */
.saas-table-wrap {
    width: 100%;
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: 12px;
}
.saas-table, .employee-table, .data-table, .expense-table, table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}
.saas-table th, .employee-table th, .data-table th, .expense-table th, table th {
    background-color: var(--background);
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 600;
    padding: 12px var(--space-lg);
    border-bottom: 1px solid var(--border-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.saas-table td, .employee-table td, .data-table td, .expense-table td, table td {
    padding: 16px var(--space-lg);
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
    color: var(--text-primary);
}
.saas-table tbody tr:last-child td, table tbody tr:last-child td {
    border-bottom: none;
}
.saas-table tbody tr:hover, table tbody tr:hover {
    background-color: var(--background);
}

/* Support for existing structures */
.pc-sidebar { width: 260px; background: var(--sidebar-bg); color: #fff; flex-shrink: 0; }
.pc-header { height: 70px; background: #fff; border-bottom: 1px solid var(--border-color); }
.pc-content { padding: var(--space-xl); overflow-y: auto; flex: 1; }

.modal-header .close, .close {
    font-size: 24px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    background: transparent;
    border: none;
    line-height: 1;
}
.modal-header .close:hover, .close:hover {
    color: var(--danger);
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.modal {
    display: none; /* Default hidden */
}
.modal.show {
    display: flex;
}