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

:root {
    /* Light Mode Variables (Default) */
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --sidebar-bg: #0f172a;
    --sidebar-text: #94a3b8;
    --sidebar-active: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --accent-primary: #4f46e5;      /* B2B Royal Indigo */
    --accent-hover: #4338ca;
    --accent-light: #eeebff;
    --border-color: #e2e8f0;
    
    --success: #10b981;
    --success-light: #ecfdf5;
    --warning: #f59e0b;
    --warning-light: #fffbeb;
    --danger: #ef4444;
    --danger-light: #fef2f2;
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
}

/* Dark Mode Overrides */
body.dark-theme {
    --bg-color: #090d16;
    --card-bg: #131c2e;
    --sidebar-bg: #090d16;
    --sidebar-text: #64748b;
    --sidebar-active: #38bdf8;
    --text-main: #f8fafc;
    --text-muted: #64748b;
    --accent-primary: #6366f1;
    --accent-hover: #818cf8;
    --accent-light: rgba(99, 102, 241, 0.15);
    --border-color: #1e293b;
    
    --success: #34d399;
    --success-light: rgba(52, 211, 153, 0.1);
    --warning: #fbbf24;
    --warning-light: rgba(251, 191, 36, 0.1);
    --danger: #f87171;
    --danger-light: rgba(248, 113, 113, 0.1);
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.5);
}

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

body {
    background: var(--bg-color);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.3s, color 0.3s;
}

/* B2B Layout Grid */
.b2b-wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar Navigation */
.b2b-sidebar {
    width: 260px;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    z-index: 10;
    border-right: 1px solid var(--border-color);
}

.sidebar-brand {
    font-size: 20px;
    font-weight: 800;
    color: #ffffff;
    text-decoration: none;
    letter-spacing: -0.02em;
    margin-bottom: 3rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.sidebar-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.sidebar-menu a {
    color: var(--sidebar-text);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: 8px;
    font-weight: 500;
    font-size: 14px;
    transition: all 0.2s ease;
}

.sidebar-menu a:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.04);
}

.sidebar-menu li.active a {
    color: #ffffff;
    background: var(--accent-primary);
}

.sidebar-footer {
    margin-top: auto;
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: 1.5rem;
}

/* Main Content Wrapper */
.b2b-main {
    flex: 1;
    margin-left: 260px;
    display: flex;
    flex-direction: column;
    min-width: 0; /* prevents flex items from overflowing */
}

/* Top Navbar */
.b2b-nav {
    height: 70px;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    position: sticky;
    top: 0;
    z-index: 5;
}

.nav-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-main);
}

.nav-controls {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 18px;
    color: var(--text-muted);
    padding: 8px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
    box-shadow: none !important;
    transform: none !important;
}
.theme-toggle:hover {
    background: var(--bg-color);
    color: var(--text-main);
}

.user-profile-menu {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
}

/* Page Area */
.b2b-content {
    padding: 2.5rem 2rem;
    flex: 1;
}

/* Stat Cards */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.metric-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.metric-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.metric-val {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.2;
}

.metric-footer {
    margin-top: 10px;
    font-size: 12px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 5px;
}

.metric-footer.up { color: var(--success); }
.metric-footer.down { color: var(--danger); }

/* B2B Table Styling */
.table-card {
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    margin-bottom: 2.5rem;
}

.table-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.table-title {
    font-size: 16px;
    font-weight: 700;
}

.b2b-table-wrapper {
    overflow-x: auto;
}

.b2b-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.b2b-table th {
    background: rgba(0,0,0,0.01);
    color: var(--text-muted);
    font-weight: 600;
    padding: 14px 20px;
    border-bottom: 1px solid var(--border-color);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.b2b-table td {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
    font-size: 13.5px;
    vertical-align: middle;
}

.b2b-table tr:last-child td {
    border-bottom: none;
}

.b2b-table tr:hover td {
    background: rgba(0, 0, 0, 0.005);
}

body.dark-theme .b2b-table tr:hover td {
    background: rgba(255, 255, 255, 0.01);
}

/* Status Badges */
.status-pill {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-pill.in-stock, .status-pill.approved, .status-pill.quoted {
    background: var(--success-light);
    color: var(--success);
}

.status-pill.low-stock, .status-pill.pending, .status-pill.review {
    background: var(--warning-light);
    color: var(--warning);
}

.status-pill.out-of-stock, .status-pill.rejected, .status-pill.closed {
    background: var(--danger-light);
    color: var(--danger);
}

/* Buttons */
.b2b-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    font-size: 13px;
    font-weight: 600;
    border-radius: 8px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    font-family: inherit;
    outline: none;
}

.b2b-btn-primary {
    background: var(--accent-primary);
    color: #ffffff;
}
.b2b-btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.2);
}

.b2b-btn-outline {
    background: transparent;
    border-color: var(--border-color);
    color: var(--text-main);
}
.b2b-btn-outline:hover {
    background: var(--bg-color);
    border-color: var(--text-muted);
}

.b2b-btn-danger {
    background: var(--danger-light);
    color: var(--danger);
}
.b2b-btn-danger:hover {
    background: var(--danger);
    color: #ffffff;
}

/* Filter Forms and Inputs */
.filter-row {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.b2b-input, .b2b-select, .b2b-textarea {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 10px 16px;
    border-radius: 8px;
    font-size: 13.5px;
    outline: none;
    font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.b2b-input:focus, .b2b-select:focus, .b2b-textarea:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.b2b-input-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 1.25rem;
}

.b2b-input-group label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Form Layout Container */
.form-card {
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    max-width: 600px;
    margin: 0 auto;
    box-shadow: var(--shadow-sm);
}

/* Quote Builder Page Details */
.quote-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

.quote-items-card {
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
}

/* B2B Catalog Styles */
.b2b-products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1.5rem;
}

.b2b-product-card {
    background: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.b2b-product-card:hover {
    transform: translateY(-2px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-md);
}

.b2b-product-card img {
    width: 100%;
    height: 140px;
    object-fit: contain;
    margin-bottom: 1rem;
}

.b2b-product-card h4 {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--text-main);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    height: 42px;
}

.b2b-product-price {
    font-size: 16px;
    font-weight: 800;
    color: var(--text-main);
    margin-top: auto;
    margin-bottom: 8px;
}

/* B2B Landing Styles */
.b2b-landing-hero {
    text-align: center;
    padding: 6rem 2rem;
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
    color: #ffffff;
    border-radius: 16px;
    margin-bottom: 4rem;
    box-shadow: var(--shadow-md);
}

.b2b-landing-hero h1 {
    font-size: 42px;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
}

.b2b-landing-hero p {
    font-size: 18px;
    color: #94a3b8;
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

.b2b-section {
    margin-bottom: 5rem;
}

.b2b-section h3 {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 2rem;
    text-align: center;
}

/* Dynamic Alerts in B2B */
.b2b-alert {
    padding: 12px 18px;
    border-radius: 8px;
    border: 1px solid transparent;
    margin-bottom: 1.5rem;
    font-weight: 500;
    font-size: 13.5px;
}

.b2b-alert-success {
    background: var(--success-light);
    color: var(--success);
    border-color: rgba(16, 185, 129, 0.15);
}

.b2b-alert-warning {
    background: var(--warning-light);
    color: var(--warning);
    border-color: rgba(245, 158, 11, 0.15);
}

.b2b-alert-error, .b2b-alert-danger {
    background: var(--danger-light);
    color: var(--danger);
    border-color: rgba(239, 68, 68, 0.15);
}

/* Footer info */
.b2b-footer {
    border-top: 1px solid var(--border-color);
    padding: 2rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 12px;
}

/* Responsive grid changes */
@media (max-width: 992px) {
    .b2b-sidebar {
        width: 70px;
        padding: 2rem 0.5rem;
        align-items: center;
    }
    .sidebar-brand span, .sidebar-menu span, .sidebar-footer {
        display: none;
    }
    .b2b-main {
        margin-left: 70px;
    }
    .quote-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .b2b-nav {
        padding: 0 1rem;
    }
    .b2b-content {
        padding: 1.5rem 1rem;
    }
    .b2b-sidebar {
        display: none;
    }
    .b2b-main {
        margin-left: 0;
    }
    .metrics-grid {
        grid-template-columns: 1fr;
    }
}