/** 
 * erp.css - Core Styling for CarTechMax Mini ERP
 * Uses modern UI principles, soft shadows, vibrant blues, and inter font
 */

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #10b981; /* green for profit */
    --danger-color: #ef4444;    
    --text-main: #111827;
    --text-muted: #6b7280;
    --bg-main: #f3f4f6;
    --bg-card: #ffffff;
    --border-color: #e5e7eb;
    
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body.erp-bg {
    margin: 0;
    padding: 0;
    background-color: var(--bg-main);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Typography */
h1, h2, h3, h4 { margin: 0; color: var(--text-main); }
p { margin: 0; color: var(--text-muted); }

/* Globals */
* { box-sizing: border-box; }

/* Global Navigation Topbar */
.erp-nav {
    background-color: #1e1b4b; /* deep indigo */
    color: white;
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
    z-index: 50;
}

.erp-nav .nav-brand {
    font-size: 1.1rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: #fff;
}

.erp-nav .nav-links {
    display: flex;
    gap: 0.25rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none; /* Firefox */
}
.erp-nav .nav-links::-webkit-scrollbar {
    display: none; /* Safari and Chrome */
}

.erp-nav .nav-links a {
    color: #c7d2fe;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    padding: 0.4rem 0.5rem;
    border-radius: 6px;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.erp-nav .nav-links a:hover {
    color: white;
    background-color: rgba(255,255,255,0.1);
}

.erp-nav .nav-links a.active {
    background-color: var(--primary-color);
    color: white;
}

.erp-nav .nav-user {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.9rem;
}

.erp-mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    margin-right: 0.75rem;
}

@media (max-width: 768px) {
    .erp-mobile-menu-btn { display: block; padding-top: 3px; }
    .erp-nav { padding: 1rem; }
    .erp-nav .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #1e1b4b;
        padding: 1rem;
        gap: 0.5rem;
        border-top: 1px solid rgba(255,255,255,0.1);
        box-shadow: 0 10px 15px -3px rgba(0,0,0,0.3);
    }
    .erp-nav .nav-links.show {
        display: flex;
    }
    .erp-nav .nav-links a {
        text-align: center;
        padding: 0.75rem;
        font-size: 1.1rem;
    }
    .erp-nav .nav-user { display: none; }
    
    /* Mobile Padding Optimizations */
    .erp-container { padding: 0.5rem !important; }
    .card-panel { padding: 0.75rem !important; }
    .erp-header { margin-bottom: 1rem !important; }
    .erp-header h1 { font-size: 1.25rem !important; margin-bottom: 0.25rem !important; }
}

/* Layout Containers */
.erp-container {
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    padding: 2rem;
    flex: 1;
}

.erp-header {
    margin-bottom: 2rem;
}

.erp-header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

/* Cards & Panels */
.card-panel {
    background: var(--bg-card);
    border-radius: 12px;
    box-shadow: 0 1px 3px 0 rgba(0,0,0,0.1), 0 1px 2px 0 rgba(0,0,0,0.06);
    padding: 1.5rem;
    border: 1px solid var(--border-color);
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    display:flex;
    justify-content: space-between;
    align-items: center;
}

/* Forms & Inputs */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.35rem;
    color: #374151;
}

.input-field {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 0.95rem;
    font-family: inherit;
    transition: border-color 0.2s;
}

.input-field:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}
.input-field.readonly {
    background-color: #f3f4f6;
    cursor: not-allowed;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 1.25rem;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
    text-decoration: none;
}

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

.btn-secondary {
    background-color: #f3f4f6;
    color: #374151;
    border: 1px solid #d1d5db;
}
.btn-secondary:hover { background-color: #e5e7eb; }

.btn-success { background-color: var(--secondary-color); color: white; }

.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.85rem;
}

.btn-outline {
    background: transparent;
    border: 1px solid currentColor;
    color: inherit;
}
.btn-outline:hover {
    background: rgba(255,255,255,0.1);
}

/* Tables */
.erp-table-wrapper {
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.erp-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    background: white;
}

.erp-table th, .erp-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.erp-table th {
    background-color: #f8fafc;
    color: #475569;
    font-weight: 600;
    white-space: nowrap;
}

.erp-table tbody tr:hover {
    background-color: #f9fafb;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: #1f2937;
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 9999;
}
.toast.show {
    transform: translateY(0);
    opacity: 1;
}
.toast.error { background: var(--danger-color); }
.toast.success { background: var(--secondary-color); }