/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg: #f8f9fa;
    --surface: #ffffff;
    --border: #dee2e6;
    --text: #212529;
    --text-muted: #6c757d;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --danger: #dc3545;
    --danger-hover: #b02a37;
    --success: #198754;
    --radius: 6px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

/* Login */
.login-card {
    max-width: 400px;
    margin: 120px auto;
    padding: 48px 40px;
    background: var(--surface);
    border-radius: 12px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.1);
    text-align: center;
}
.login-card h1 { font-size: 24px; margin-bottom: 8px; }
.login-card p { color: var(--text-muted); margin-bottom: 32px; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-primary:disabled { background: #93c5fd; cursor: not-allowed; }
.btn-google {
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--border);
    padding: 12px 32px;
    font-size: 15px;
}
.btn-google:hover { background: #f1f3f5; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-hover); }
.btn-small { padding: 4px 12px; font-size: 12px; }

/* Navbar */
.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    height: 56px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
}
.nav-left { display: flex; align-items: center; gap: 8px; }
.nav-title { font-size: 18px; font-weight: 600; }
.nav-version { font-size: 11px; color: var(--text-muted); }
.nav-right { display: flex; align-items: center; gap: 16px; }
.nav-user { color: var(--text-muted); font-size: 14px; }
.nav-link {
    color: var(--primary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
}
.nav-link:hover { text-decoration: underline; }

/* Content */
.content { padding: 24px; max-width: 100%; }

/* Upload */
.upload-section {
    margin-bottom: 20px;
}
.upload-form {
    display: flex;
    gap: 12px;
    align-items: center;
}
.upload-label {
    display: inline-flex;
    align-items: center;
    padding: 10px 20px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 14px;
    color: var(--text-muted);
    transition: border-color 0.15s;
}
.upload-label:hover { border-color: var(--primary); }
.upload-label input[type="file"] { display: none; }
.model-select {
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    background: var(--surface);
    cursor: pointer;
}
.upload-status { margin-top: 8px; font-size: 13px; min-height: 20px; }
.upload-status.loading { color: var(--primary); }
.upload-status.error { color: var(--danger); }
.upload-status.success { color: var(--success); }

/* Search + Controls */
.search-section {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}
.search-input {
    width: 320px;
    padding: 8px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    outline: none;
    transition: border-color 0.15s;
}
.search-input:focus { border-color: var(--primary); }
.btn-outline {
    background: var(--surface);
    color: var(--primary);
    border: 1px solid var(--primary);
}
.btn-outline:hover { background: #eff6ff; }
.total-cost {
    margin-left: auto;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
}

/* NDA Table */
.nda-table-wrap {
    overflow-x: auto;
}
.nda-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}
.nda-table th, .nda-table td {
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}
.nda-table th {
    background: #f1f3f5;
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    color: var(--text-muted);
    white-space: nowrap;
    user-select: none;
}
.nda-table th.sortable { cursor: pointer; }
.nda-table th.sortable:hover { color: var(--primary); }
.nda-table th.sortable::after { content: ""; margin-left: 4px; }
.nda-table th.sort-asc::after { content: " \25B2"; }
.nda-table th.sort-desc::after { content: " \25BC"; }

.th-expand, .td-expand { width: 28px; text-align: center; }
.td-expand { font-size: 10px; color: var(--text-muted); }
.nda-summary-row { cursor: pointer; transition: background 0.1s; }
.nda-summary-row:hover { background: #f8f9fa; }
.nda-summary-row.expanded { background: #eff6ff; }
.nda-summary-row td.date-expired {
    background-color: var(--danger);
    color: #fff;
    font-weight: 600;
}
.nda-pdf-link {
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
}
.nda-pdf-link:hover { text-decoration: underline; }

.nda-detail-row td {
    padding: 0;
    background: #fafbfc;
}
.nda-detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1px;
    background: var(--border);
}
.nda-field {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 8px 12px;
    background: var(--surface);
    font-size: 13px;
}
.field-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    color: var(--text-muted);
}
.field-value { word-break: break-word; }

/* Conditional formatting */
.nda-field.date-expired {
    background-color: var(--danger);
}
.nda-field.date-expired .field-label { color: rgba(255,255,255,0.7); }
.nda-field.date-expired .field-value { color: #fff; font-weight: 600; }
.nda-field.nonstandard .field-value {
    color: var(--danger);
    font-weight: 600;
}
.nda-field.nonstandard { cursor: help; }

.token-info {
    padding: 6px 14px;
    font-size: 12px;
    color: var(--text-muted);
    background: var(--surface);
    border-top: 1px solid var(--border);
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
    font-size: 15px;
}

/* Admin table */
.admin-table {
    width: 100%;
    max-width: 800px;
    border-collapse: collapse;
    margin-top: 16px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}
.admin-table th, .admin-table td {
    padding: 10px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}
.admin-table th {
    background: #f1f3f5;
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    color: var(--text-muted);
}
.admin-table select {
    padding: 4px 8px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 13px;
}
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}
.badge-pending { background: #fff3cd; color: #856404; }
.badge-approved { background: #d1e7dd; color: #0f5132; }
h2 { margin-bottom: 8px; }