:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --secondary-color: #0ea5e9;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --radius: 12px;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    margin-bottom: 1.5rem;
}

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

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    border-radius: 8px;
    padding: 0.6rem 1.2rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-1px);
}

.form-control, .form-select {
    border-radius: 8px;
    border: 1px solid var(--border-color);
    padding: 0.6rem 0.8rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.navbar {
    background: rgba(255, 255, 255, 0.8) !important;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 0;
}

.navbar-brand {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    color: var(--primary-color) !important;
}

.nav-link {
    font-weight: 500;
    color: var(--text-main) !important;
    padding: 0.5rem 1rem !important;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.nav-link:hover {
    background: rgba(79, 70, 229, 0.05);
    color: var(--primary-color) !important;
}

.nav-link.active {
    background: var(--primary-color);
    color: #fff !important;
}

.table {
    border-collapse: separate;
    border-spacing: 0;
}

.table thead th {
    background-color: #f1f5f9;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    border-bottom: 2px solid var(--border-color);
    padding: 1rem;
}

.table tbody td {
    padding: 1rem;
    vertical-align: middle;
    border-bottom: 1px solid var(--border-color);
}

.invoice-header {
    background: linear-gradient(135deg, #ffffff 0%, #f1f5f9 100%);
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

.total-section {
    background: #f1f5f9;
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.badge {
    padding: 0.5em 0.8em;
    border-radius: 6px;
    font-weight: 500;
}

/* Auth Pages */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f8faff 0%, #eef2f7 100%);
    padding: 2rem;
}

.auth-card {
    width: 100%;
    max-width: 450px;
    border: none;
    border-radius: 1.5rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
    overflow: hidden;
}

.auth-card .card-body {
    padding: 3rem 2.5rem;
}

.auth-logo {
    font-family: 'Outfit', sans-serif;
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: -1px;
    margin-bottom: 2rem;
    text-align: center;
}

.auth-logo i {
    font-size: 1.8rem;
    margin-right: 0.5rem;
    vertical-align: middle;
}

/* Utility Classes */
.fs-xs { font-size: 0.75rem; }
.fw-medium { font-weight: 500; }

.btn-icon {
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    border-radius: 10px;
    transition: all 0.2s ease;
}

.btn-icon:hover {
    transform: translateY(-2px);
}

.btn-light-primary { background-color: rgba(79, 70, 229, 0.1); color: var(--primary-color); border: none; }
.btn-light-primary:hover { background-color: var(--primary-color); color: white; }

.btn-light-danger { background-color: rgba(239, 68, 68, 0.1); color: #ef4444; border: none; }
.btn-light-danger:hover { background-color: #ef4444; color: white; }

.btn-light-success { background-color: rgba(34, 197, 94, 0.1); color: #22c55e; border: none; }
.btn-light-success:hover { background-color: #22c55e; color: white; }

.btn-light-info { background-color: rgba(14, 165, 233, 0.1); color: #0ea5e9; border: none; }
.btn-light-info:hover { background-color: #0ea5e9; color: white; }

.btn-white {
    background-color: white;
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.bg-primary-subtle { background-color: rgba(79, 70, 229, 0.1) !important; }
.bg-warning-subtle { background-color: rgba(245, 158, 11, 0.1) !important; }

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Company Badge */
.company-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.4rem 0.8rem;
    background: rgba(79, 70, 229, 0.05);
    border: 1px solid rgba(79, 70, 229, 0.1);
    border-radius: 10px;
    font-family: 'Outfit', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-color);
    transition: all 0.2s ease;
    text-decoration: none;
}

.company-badge:hover {
    background: rgba(79, 70, 229, 0.1);
    transform: translateY(-1px);
    color: var(--primary-color);
}

.company-badge i {
    font-size: 1rem;
    margin-right: 0.5rem;
}