* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, sans-serif;
    background: #f5f5f5;
    color: #1a1a1a;
}

header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 1rem;
    background: #1a1a2e;
    color: #fff;
}

header h1 {
    margin: 0;
    font-size: 1.25rem;
}

#header-left {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

nav {
    display: flex;
    gap: 0.75rem;
}

nav a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.9rem;
    padding: 0.25rem 0;
    border-bottom: 2px solid transparent;
}

nav a:hover {
    color: #fff;
}

nav a.active {
    color: #fff;
    border-bottom-color: #fff;
}

#header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

#unsaved-indicator {
    color: #ffa500;
    font-weight: bold;
    font-size: 0.875rem;
}

#sign-out-btn {
    padding: 0.35rem 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 4px;
    background: transparent;
    color: #fff;
    cursor: pointer;
    font-size: 0.8rem;
}

#sign-out-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

#toolbar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: #e8e8e8;
    border-bottom: 1px solid #ccc;
}

#toolbar button {
    padding: 0.4rem 0.85rem;
    border: 1px solid #999;
    border-radius: 4px;
    background: #fff;
    cursor: pointer;
    font-size: 0.85rem;
}

#toolbar button:hover {
    background: #f0f0f0;
}

#save-btn {
    background: #2563eb !important;
    color: #fff;
    border-color: #1d4ed8 !important;
}

#save-btn:hover {
    background: #1d4ed8 !important;
}

#delete-rows-btn {
    color: #b91c1c;
    border-color: #dc2626 !important;
}

#delete-rows-btn:hover {
    background: #fef2f2 !important;
}

#status-message {
    margin-left: 0.5rem;
    font-size: 0.85rem;
}

.status-info {
    color: #666;
}

.status-success {
    color: #16a34a;
}

.status-error {
    color: #dc2626;
    font-weight: bold;
}

#grid-container {
    height: calc(100vh - 90px);
    width: 100%;
}

#ledger-grid {
    width: 100%;
    height: 100%;
}

#load-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    gap: 1rem;
    color: #dc2626;
    font-size: 1.1rem;
}

#load-error button {
    padding: 0.5rem 1.5rem;
    border: 1px solid #999;
    border-radius: 4px;
    background: #fff;
    cursor: pointer;
    font-size: 0.9rem;
}

.hidden {
    display: none !important;
}

/* ── Upload Page ─────────────────────────────────────────────────────────────── */

.upload-page {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.upload-card {
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 1.5rem;
}

.upload-card h2 {
    margin: 0 0 1rem;
    font-size: 1.1rem;
}

.upload-form {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.upload-form input[type="file"] {
    font-size: 0.9rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: #555;
}

.primary-btn {
    padding: 0.5rem 1.25rem;
    border: 1px solid #1d4ed8;
    border-radius: 4px;
    background: #2563eb;
    color: #fff;
    cursor: pointer;
    font-size: 0.9rem;
    align-self: flex-start;
}

.primary-btn:hover {
    background: #1d4ed8;
}

.primary-btn:disabled {
    background: #93b4f5;
    border-color: #93b4f5;
    cursor: not-allowed;
}

.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid #e0e0e0;
    border-top-color: #2563eb;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

#upload-status {
    font-size: 0.85rem;
}

/* ── Results ─────────────────────────────────────────────────────────────────── */

#results {
    margin-top: 1.5rem;
}

.results-section {
    margin-bottom: 1.5rem;
}

.results-section h2 {
    font-size: 1rem;
    margin: 0 0 0.75rem;
}

.results-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.results-table th,
.results-table td {
    padding: 0.5rem 0.75rem;
    text-align: left;
    border: 1px solid #ddd;
}

.results-table th {
    background: #f0f0f0;
    font-weight: 600;
}

.results-table tbody tr:nth-child(even) {
    background: #fafafa;
}

.rejection-card {
    background: #fff7ed;
    border: 1px solid #fed7aa;
    border-radius: 6px;
    padding: 0.75rem 1rem;
    margin-bottom: 0.5rem;
}

.rejection-card strong {
    font-size: 0.9rem;
}

.rejection-card p {
    margin: 0.35rem 0 0;
    font-size: 0.85rem;
    color: #555;
}

.rejection-reasoning {
    font-style: italic;
    color: #777 !important;
}

.no-results {
    color: #666;
    font-style: italic;
}