:root {
    color-scheme: light;
    --bg: #f4f6f8;
    --surface: #ffffff;
    --surface-muted: #f8fafc;
    --border: #d8dee8;
    --border-strong: #c6ceda;
    --text: #1f2937;
    --muted: #64748b;
    --primary: #1d4ed8;
    --primary-hover: #1e40af;
    --secondary: #eef2f7;
    --secondary-hover: #e2e8f0;
    --danger-bg: #fef2f2;
    --danger-border: #fecaca;
    --danger-text: #991b1b;
    --success-bg: #f0fdf4;
    --success-border: #bbf7d0;
    --success-text: #166534;
    font-family: Arial, Helvetica, sans-serif;
    background: var(--bg);
    color: var(--text);
}

* {
    box-sizing: border-box;
}

[hidden] {
    display: none !important;
}

html {
    min-width: 320px;
}

body {
    min-height: 100vh;
    margin: 0;
    background: var(--bg);
}

a {
    color: var(--primary);
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
}

.page {
    min-height: 100vh;
}

.app-layout {
    display: grid;
    grid-template-columns: 240px minmax(0, 1fr);
    min-width: 900px;
    min-height: 100vh;
}

.sidebar {
    border-right: 1px solid var(--border);
    background: var(--surface);
    padding: 20px 14px;
}

.brand {
    padding: 0 10px 18px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 14px;
}

.brand strong {
    display: block;
    color: #111827;
    font-size: 16px;
    line-height: 1.35;
}

.sidebar-nav {
    display: grid;
    gap: 4px;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    min-height: 40px;
    border-radius: 6px;
    padding: 9px 10px;
    color: #334155;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    background: #e8f0fe;
    color: var(--primary);
}

.app-main {
    min-width: 0;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 64px;
    border-bottom: 1px solid var(--border);
    background: var(--surface);
    padding: 12px 28px;
}

.topbar .btn {
    width: auto;
}

.workspace {
    min-width: 0;
    padding: 28px;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 18px;
}

.page-header h1 {
    margin: 0;
    color: #111827;
    font-size: 26px;
    line-height: 1.2;
}

.card {
    max-width: 920px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    padding: 20px;
    margin-bottom: 14px;
}

.login-screen {
    display: grid;
    min-height: 100vh;
    place-items: center;
    padding: 24px;
}

.login-panel {
    width: min(100%, 400px);
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    padding: 28px;
    box-shadow: 0 14px 40px rgba(15, 23, 42, 0.08);
}

.not-found-screen {
    display: grid;
    min-height: 100vh;
    place-items: center;
    padding: 24px;
}

.not-found-panel {
    width: min(100%, 460px);
    text-align: center;
}

.not-found-panel p {
    margin: 0 0 10px;
    color: var(--muted);
    font-size: 14px;
    font-weight: 700;
}

.not-found-panel h1 {
    margin: 0 0 22px;
    color: #111827;
    font-size: 30px;
    line-height: 1.2;
}

.login-heading {
    margin-bottom: 22px;
}

.login-heading h1 {
    margin: 0;
    color: #111827;
    font-size: 24px;
    line-height: 1.2;
}

.login-heading p {
    margin: 8px 0 0;
    color: var(--muted);
    font-size: 14px;
}

.form {
    display: grid;
    gap: 18px;
}

.form-login {
    gap: 16px;
}

.field {
    display: grid;
    min-width: 0;
    gap: 8px;
}

.field label {
    color: #475569;
    font-size: 13px;
    font-weight: 700;
}

input[type="text"],
input[type="password"],
input[type="file"] {
    width: 100%;
    min-width: 0;
    border: 1px solid var(--border-strong);
    border-radius: 6px;
    background: #ffffff;
    color: var(--text);
    font: inherit;
    padding: 11px 12px;
}

input[type="file"] {
    min-height: 46px;
    color: #334155;
}

input:focus {
    border-color: var(--primary);
    outline: 3px solid rgba(29, 78, 216, 0.14);
}

.search-form {
    max-width: 920px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto auto;
    gap: 10px;
    margin-bottom: 14px;
}

.help,
.limits {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.5;
}

.limits {
    font-size: 13px;
}

.form-actions,
.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.actions {
    margin-top: 18px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    max-width: 100%;
    min-height: 40px;
    border: 1px solid transparent;
    border-radius: 6px;
    padding: 9px 14px;
    font: inherit;
    font-size: 14px;
    font-weight: 700;
    line-height: 1.2;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    white-space: normal;
}

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

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

.btn-secondary {
    border-color: var(--border);
    background: var(--secondary);
    color: var(--text);
}

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

.alert {
    max-width: 920px;
    border-radius: 8px;
    padding: 12px 14px;
    margin-bottom: 16px;
    font-size: 14px;
    line-height: 1.45;
}

.alert-error {
    border: 1px solid var(--danger-border);
    background: var(--danger-bg);
    color: var(--danger-text);
}

.alert-success {
    border: 1px solid var(--success-border);
    background: var(--success-bg);
    color: var(--success-text);
}

.result-list {
    display: grid;
    gap: 14px;
}

.result-item {
    display: grid;
    gap: 5px;
    min-width: 0;
    border-bottom: 1px solid var(--border);
    padding-bottom: 14px;
}

.result-item:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.result-item strong,
.result-item a,
.url {
    overflow-wrap: anywhere;
    word-break: break-word;
}

.table-list {
    display: grid;
    gap: 10px;
}

.page-summary {
    max-width: 920px;
    margin: 0 0 10px;
    color: var(--muted);
    font-size: 13px;
}

.pagination {
    max-width: 920px;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 14px;
}

.page-tab {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    min-height: 36px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--surface);
    color: var(--text);
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
}

.page-tab:hover,
.page-tab.active {
    border-color: var(--primary);
    background: var(--primary);
    color: #ffffff;
}

.page-gap {
    border-color: transparent;
    background: transparent;
    color: var(--muted);
}

.tools-card {
    margin-bottom: 14px;
}

.progress-panel {
    max-width: 920px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    padding: 14px;
    margin-bottom: 14px;
}

.progress-top {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    color: #111827;
    font-size: 14px;
    line-height: 1.4;
}

.progress-track {
    height: 10px;
    overflow: hidden;
    border-radius: 999px;
    background: var(--secondary);
    margin-top: 10px;
}

.progress-bar {
    width: 0;
    height: 100%;
    border-radius: inherit;
    background: var(--primary);
    transition: width 160ms ease;
}

.progress-panel p {
    margin: 10px 0 0;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.45;
}

.file-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    padding: 14px;
}

.file-main {
    display: grid;
    min-width: 0;
    gap: 6px;
}

.file-main strong {
    color: #111827;
    line-height: 1.35;
    overflow-wrap: anywhere;
}

.file-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 12px;
    color: var(--muted);
    font-size: 13px;
}

.file-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 8px;
}

.empty-state {
    max-width: 920px;
    border: 1px dashed var(--border-strong);
    border-radius: 8px;
    background: var(--surface);
    color: var(--muted);
    padding: 30px 18px;
    text-align: center;
}

.public-pdf {
    min-height: 100vh;
    background: var(--bg);
    padding: 14px;
}

.public-pdf-actions {
    width: min(1120px, 100%);
    margin: 0 auto 12px;
    display: flex;
    justify-content: flex-end;
}

.pdf-viewer {
    width: min(1120px, 100%);
    margin: 0 auto;
    display: grid;
    justify-items: center;
    gap: 14px;
}

.pdf-status {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    color: var(--muted);
    padding: 18px;
    text-align: center;
}

.pdf-page {
    display: block;
    max-width: 100%;
    height: auto;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--surface);
    box-shadow: 0 10px 26px rgba(15, 23, 42, 0.10);
}