/* Complete Clean White UI */
:root {
    --bg: #f7f9fc;
    --card: #ffffff;
    --ink: #0b1020;
    --muted: #e5e9f1;
    --sub: #6b7280;
    --accent: #2563eb;
    --success: #059669;
    --danger: #dc2626;
}

* {
    box-sizing: border-box;
}

html, body {
    height: 100%;
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    font-size: 14px;
    line-height: 1.45;
}

/* Topbar & Layout */
.topbar {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #fff;
    border-bottom: 1px solid var(--muted);
    padding: 12px 20px;
    gap: 20px;
}

.brand {
    font-weight: 800;
    font-size: 18px;
    letter-spacing: 0.3px;
}

.nav {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.nav a {
    color: #374151;
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 8px;
    transition: all 0.2s;
}

.nav a:hover {
    background: #eef2ff;
    color: #1e40af;
}

.user {
    display: flex;
    align-items: center;
    gap: 8px;
}

.user a {
    color: var(--danger);
    text-decoration: none;
}

.container {
    max-width: 1200px;
    margin: 20px auto;
    padding: 0 20px 40px;
}

/* Cards & Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 16px;
    margin: 16px 0;
}

.card {
    background: var(--card);
    border: 1px solid var(--muted);
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
    padding: 20px;
    margin: 12px 0;
}

.card h2 {
    margin: 0 0 16px 0;
    font-size: 16px;
    font-weight: 700;
    color: var(--ink);
}

.kpi {
    text-align: center;
    grid-column: span 4;
}

.kpi .value {
    font-size: 28px;
    font-weight: 800;
    color: var(--accent);
    margin: 8px 0;
}

.kpi .label {
    font-size: 13px;
    color: var(--sub);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Forms & Controls */
.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 12px 0;
}

input, select, button {
    min-height: 40px;
    font-size: 14px;
    border-radius: 8px;
    border: 1px solid #d1d5db;
    padding: 8px 12px;
    outline: none;
    transition: all 0.2s;
}

input[type="date"],
input[type="text"],
input[type="number"],
input[type="email"],
input[type="password"],
select {
    background: #fff;
    color: #111827;
    border: 1px solid #d1d5db;
}

input:focus, select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

button {
    background: linear-gradient(180deg, #3b82f6, #2563eb);
    border: 1px solid #2563eb;
    color: #fff;
    font-weight: 600;
    cursor: pointer;
    padding: 8px 16px;
}

button:hover {
    background: linear-gradient(180deg, #2563eb, #1d4ed8);
}

button.ghost {
    background: #fff;
    color: #1f2937;
    border-color: #d1d5db;
}

button.ghost:hover {
    background: #f9fafb;
}

.add-row {
    margin-top: 16px;
    width: 100%;
}

/* Entry Form Grid */
.form-header {
    display: grid;
    grid-template-columns: 100px 150px 150px 1fr 180px 100px 120px 120px 100px;
    gap: 8px;
    padding: 8px 0;
    font-size: 12px;
    color: var(--sub);
    border-bottom: 1px solid var(--muted);
    margin-bottom: 8px;
}

.form-grid {
    display: grid;
    grid-template-columns: 100px 150px 150px 1fr 180px 100px 120px 120px 100px;
    gap: 8px;
    align-items: center;
    margin: 8px 0;
}

.row {
    display: contents;
}

.row input, .row select {
    width: 100%;
}

.row:hover > * {
    background: #f9fafb;
}

.status {
    color: var(--success);
    font-size: 12px;
}

.small {
    font-size: 12px;
    color: var(--sub);
}

/* Tables */
.table-wrap {
    overflow: auto;
    border-radius: 8px;
    border: 1px solid var(--muted);
    background: #fff;
    margin: 12px 0;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

thead th {
    position: sticky;
    top: 0;
    background: #f8fafc;
    color: #374151;
    text-align: left;
    padding: 12px;
    border-bottom: 1px solid var(--muted);
    font-weight: 600;
}

tbody td {
    padding: 12px;
    border-bottom: 1px solid var(--muted);
}

tbody tr:hover {
    background: #f9fafb;
}

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    padding: 20px;
}

.login-box {
    background: #fff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
}

.login-box h1 {
    margin: 0 0 8px 0;
    font-size: 24px;
    font-weight: 800;
    text-align: center;
}

.subtitle {
    text-align: center;
    color: var(--sub);
    margin: 0 0 24px 0;
}

.field {
    margin: 0 0 16px 0;
}

.field label {
    display: block;
    margin: 0 0 6px 0;
    font-weight: 500;
    color: #374151;
}

.field input {
    width: 100%;
}

.alert {
    padding: 12px;
    border-radius: 8px;
    margin: 0 0 16px 0;
    font-size: 14px;
}

.alert.error {
    background: #fef2f2;
    color: var(--danger);
    border: 1px solid #fecaca;
}

.login-help {
    margin-top: 24px;
    padding: 16px;
    background: #f0f9ff;
    border-radius: 8px;
    border: 1px solid #bae6fd;
}

.login-help p {
    margin: 0;
    font-size: 13px;
}

.login-help code {
    background: #fff;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
}

/* Footer */
.footer {
    border-top: 1px solid var(--muted);
    background: #fff;
    color: var(--sub);
    padding: 20px;
    text-align: center;
    font-size: 13px;
}

/* Breakdown Tree */
.toggle {
    border: 1px solid #d1d5db;
    background: #fff;
    border-radius: 6px;
    padding: 0 8px;
    line-height: 24px;
    height: 26px;
    width: 34px;
    text-align: center;
    cursor: pointer;
    color: #111827;
    font-weight: 700;
    font-size: 14px;
}

.child {
    background: #fafafa;
}

.cat-row {
    font-weight: 600;
}

.cat-row:hover {
    background: #f3f4f6;
}

/* Responsive */
@media (max-width: 768px) {
    .topbar {
        flex-direction: column;
        gap: 12px;
    }
    
    .nav {
        justify-content: center;
    }
    
    .grid {
        grid-template-columns: 1fr;
    }
    
    .kpi {
        grid-column: span 1;
    }
    
    .form-header,
    .form-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .container {
        padding: 0 12px 20px;
    }
}