:root {
    --primary-color: #2563eb;
    --secondary-color: #f8fafc;
    --text-color: #334155;
    --border-color: #e2e8f0;
    --bg-color: #f1f5f9;
    --white: #ffffff;
}

[data-theme="dark"] {
    --primary-color: #3b82f6;
    --secondary-color: #1e293b;
    --text-color: #f1f5f9;
    --border-color: #334155;
    --bg-color: #0f172a;
    --white: #1e293b;
}

[data-theme="dark"] h1, 
[data-theme="dark"] h2, 
[data-theme="dark"] h3 {
    color: #f8fafc;
}

[data-theme="dark"] input[type="text"],
[data-theme="dark"] input[type="number"],
[data-theme="dark"] input[type="month"],
[data-theme="dark"] select {
    background-color: #0f172a;
    color: #f1f5f9;
}

[data-theme="dark"] .topbar-nav a {
    color: #94a3b8;
}

[data-theme="dark"] .topbar-nav a.active {
    background-color: #334155;
}

[data-theme="dark"] .badge-lunas {
    background-color: #064e3b;
    color: #34d399;
}

[data-theme="dark"] .badge-menunggu {
    background-color: #334155;
    color: #cbd5e1;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    padding: 2rem;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
    border: 1px solid var(--border-color);
}

h1, h2, h3 {
    color: #0f172a;
    margin-bottom: 1rem;
}

.form-group {
    margin-bottom: 1rem;
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

input[type="text"],
input[type="number"] {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
}

input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

button {
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
}

button:hover {
    background-color: #1d4ed8;
}

.btn-secondary {
    background-color: #64748b;
}

.btn-secondary:hover {
    background-color: #475569;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1.5rem;
}

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

th {
    background-color: var(--secondary-color);
    font-weight: 600;
}

.invoice-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.invoice-header-left h1 {
    color: var(--primary-color);
    margin: 0;
}

.invoice-header-right {
    text-align: right;
}

.invoice-header-right h2 {
    margin-bottom: 0.25rem;
}

.invoice-body {
    margin-bottom: 2rem;
}

.total-row {
    font-weight: bold;
    font-size: 1.1rem;
}

.total-row td {
    border-top: 2px solid var(--border-color);
}

.invoice-footer {
    text-align: center;
    color: #64748b;
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    margin-top: 2rem;
}

.invoice-link {
    margin-top: 1rem;
    padding: 1rem;
    background-color: var(--secondary-color);
    border-radius: 4px;
    word-break: break-all;
}

.invoice-link a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
}

.invoice-link a:hover {
    text-decoration: underline;
}

.items-container {
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.item-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr auto;
    gap: 1rem;
    margin-bottom: 1rem;
    align-items: end;
}

.remove-btn {
    background-color: #ef4444;
    padding: 0.75rem;
}

.remove-btn:hover {
    background-color: #dc2626;
}

.d-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.topbar-wrapper {
    max-width: 1000px;
    margin: 1.5rem auto;
}

.topbar {
    background-color: var(--white);
    padding: 0.75rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
    border: 1px solid var(--border-color);
}

.topbar-brand {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.topbar-nav {
    display: flex;
    gap: 0.5rem;
}

.topbar-nav a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 8px;
    color: #64748b;
    text-decoration: none;
    transition: all 0.2s;
    font-size: 1.5rem;
}

.topbar-nav a:hover {
    background-color: var(--secondary-color);
    color: var(--primary-color);
}

.topbar-nav a.active {
    background-color: #eff6ff;
    color: var(--primary-color);
}

.footer {
    max-width: 1000px;
    margin: 2rem auto;
    text-align: center;
    color: #64748b;
    font-size: 0.875rem;
    padding: 1.5rem 0;
    border-top: 1px solid var(--border-color);
}

.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.85rem;
    font-weight: 600;
}
.badge-lunas {
    background-color: #dcfce7;
    color: #166534;
}
.badge-menunggu {
    background-color: #f1f5f9;
    color: #475569;
}