/* Professional Standard CSS for Stock Management System */
:root {
    --primary-color: #1e3a8a; /* Deep Corporate Blue */
    --primary-hover: #1e40af;
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --bg-input: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --accent: #059669;
    --error: #dc2626;
    --border: #e2e8f0;
    --shadow: 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);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    line-height: 1.5;
}

/* Table stretching and layout */
.main-content {
    flex: 1;
    overflow-y: auto;
    background: var(--bg-main);
    z-index: 10;
    position: relative;
    padding: 0 2.5rem; /* Padding moved here for better scrollbar placement */
}

.container-fluid {
    width: 100%;
    max-width: 100%;
    padding: 0; /* Container fluid handles internal layout now */
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 1rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    width: 100%;
    padding: 2.5rem; /* Added generous padding */
    margin-bottom: 2rem;
    position: relative;
    z-index: 5;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 1rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    background: #f1f5f9;
    color: var(--text-muted);
    font-size: 0.75rem;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.auth-card {
    background: var(--bg-card);
    padding: 3rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 800px; /* Stretched for better readability */
    margin: auto;
    border: 1px solid var(--border);
}

.auth-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.auth-header h1 {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-main);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    color: var(--text-main);
    font-size: 0.9375rem;
    transition: all 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 0.9375rem;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    gap: 0.5rem;
}

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

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

.alert {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
}

.alert-danger {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fee2e2;
}

.alert-success {
    background: #ecfdf5;
    color: #065f46;
    border: 1px solid #d1fae5;
}

.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* Sidebar adjustments */
.sidebar {
    background: #1e293b !important; /* Dark sidebar is standard for professional dashboards */
    color: white;
}

.nav-link {
    color: #94a3b8 !important;
}

.nav-link:hover, .nav-link.active {
    background: rgba(255, 255, 255, 0.1) !important;
    color: white !important;
}

.nav-section-title {
    color: #64748b !important;
}