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

:root {
    --bg: #0f1117;
    --surface: #1a1d27;
    --surface2: #232633;
    --border: #2e3245;
    --text: #e4e6f0;
    --text-muted: #8b8fa8;
    --accent: #6c8cff;
    --accent-hover: #8ba4ff;
    --deident: #ff6b6b;
    --pseudo: #ffa94d;
    --objective: #51cf66;
    --subjective: #22b8cf;
    --radius: 10px;
    --shadow: 0 4px 24px rgba(0, 0, 0, .4);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

header {
    text-align: center;
    padding: 3rem 1rem 1.5rem;
}

header h1 {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent), var(--subjective));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-muted);
    margin-top: .5rem;
    font-size: .95rem;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem 3rem;
}

/* Controls */
.controls-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 2rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: flex-end;
}

.api-key-group {
    flex: 1;
    min-width: 260px;
}

.api-key-group label {
    display: block;
    font-size: .85rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: .4rem;
    text-transform: uppercase;
    letter-spacing: .5px;
}

.input-row {
    display: flex;
    gap: .5rem;
}

.input-row input {
    flex: 1;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: .6rem .8rem;
    color: var(--text);
    font-size: .95rem;
    outline: none;
    transition: border-color .2s;
}

.input-row input:focus {
    border-color: var(--accent);
}

.input-row button {
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0 .7rem;
    font-size: 1.1rem;
    transition: background .2s;
}

.input-row button:hover {
    background: var(--border);
}

.actions {
    display: flex;
    gap: .75rem;
    flex-wrap: wrap;
}

.btn-primary, .btn-secondary {
    padding: .65rem 1.4rem;
    border: none;
    border-radius: 6px;
    font-size: .9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all .2s;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
}

.btn-secondary {
    background: var(--surface2);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--border);
}

.btn-primary:disabled, .btn-secondary:disabled {
    opacity: .4;
    cursor: not-allowed;
}

.status-bar {
    width: 100%;
    min-height: 1.4rem;
    font-size: .85rem;
    color: var(--text-muted);
    padding-top: .3rem;
}

.status-bar.error {
    color: var(--deident);
}

.status-bar.success {
    color: var(--objective);
}

/* Data sections */
.data-section {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.data-section h2 {
    font-size: 1.15rem;
    margin-bottom: .3rem;
}

.section-desc {
    color: var(--text-muted);
    font-size: .85rem;
    margin-bottom: 1rem;
}

.hidden {
    display: none !important;
}

/* Tables */
.data-table-wrap {
    overflow-x: auto;
}

table.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: .85rem;
}

table.data-table th {
    background: var(--surface2);
    text-align: left;
    padding: .6rem .8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: .3px;
    font-size: .75rem;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

table.data-table td {
    padding: .55rem .8rem;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

table.data-table tr:last-child td {
    border-bottom: none;
}

table.data-table tr:hover td {
    background: rgba(108, 140, 255, .04);
}

.cell-redacted {
    color: var(--deident);
    font-style: italic;
}

.cell-key {
    color: var(--pseudo);
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: .8rem;
}

.cell-stripped {
    color: var(--objective);
}

.cell-context {
    color: var(--subjective);
}

/* Technique cards grid */
.techniques-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(540px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.technique-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.card-header {
    padding: 1rem 1.2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h2 {
    font-size: 1.05rem;
    font-weight: 700;
}

.card-header.deident {
    border-bottom: 2px solid var(--deident);
}

.card-header.pseudo {
    border-bottom: 2px solid var(--pseudo);
}

.card-header.objective {
    border-bottom: 2px solid var(--objective);
}

.card-header.subjective {
    border-bottom: 2px solid var(--subjective);
}

.risk-badge {
    font-size: .7rem;
    font-weight: 700;
    padding: .25rem .6rem;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: .4px;
}

.risk-badge.high { background: rgba(255,107,107,.15); color: var(--deident); }
.risk-badge.moderate { background: rgba(255,169,77,.15); color: var(--pseudo); }
.risk-badge.zero { background: rgba(81,207,102,.15); color: var(--objective); }
.risk-badge.context { background: rgba(34,184,207,.15); color: var(--subjective); }

.card-meta {
    padding: .8rem 1.2rem;
    background: var(--surface2);
    font-size: .8rem;
    color: var(--text-muted);
}

.card-meta p {
    margin-bottom: .25rem;
}

.card-meta p:last-child {
    margin-bottom: 0;
}

.card-body {
    padding: 1rem 1.2rem;
}

.result-area {
    min-height: 80px;
}

.placeholder {
    color: var(--text-muted);
    font-size: .85rem;
    font-style: italic;
}

/* Comparison */
.comparison-section {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.comparison-section h2 {
    font-size: 1.15rem;
    margin-bottom: 1rem;
}

.comparison-wrap {
    overflow-x: auto;
}

table.comparison {
    width: 100%;
    border-collapse: collapse;
    font-size: .8rem;
}

table.comparison th {
    background: var(--surface2);
    padding: .6rem .7rem;
    text-align: left;
    font-size: .72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .3px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

table.comparison th.col-deident { color: var(--deident); }
table.comparison th.col-pseudo { color: var(--pseudo); }
table.comparison th.col-objective { color: var(--objective); }
table.comparison th.col-subjective { color: var(--subjective); }

table.comparison td {
    padding: .5rem .7rem;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
    max-width: 220px;
    word-wrap: break-word;
}

table.comparison tr:last-child td {
    border-bottom: none;
}

/* Re-identification warning */
.reid-warning {
    margin-top: 1rem;
    padding: 1rem;
    background: rgba(255, 107, 107, .06);
    border: 1px solid rgba(255, 107, 107, .25);
    border-radius: 8px;
}

.reid-title {
    font-weight: 700;
    color: var(--deident);
    font-size: .9rem;
    margin-bottom: .4rem;
}

.reid-desc {
    font-size: .8rem;
    color: var(--text-muted);
    margin-bottom: .8rem;
    line-height: 1.5;
}

.reid-examples {
    display: flex;
    flex-direction: column;
    gap: .6rem;
}

.reid-card {
    background: var(--surface2);
    border-radius: 6px;
    padding: .7rem .9rem;
    border-left: 3px solid var(--deident);
}

.reid-card-label {
    font-size: .75rem;
    font-weight: 600;
    color: var(--deident);
    margin-bottom: .4rem;
    text-transform: uppercase;
    letter-spacing: .3px;
}

.reid-clues {
    display: flex;
    flex-wrap: wrap;
    gap: .4rem .8rem;
    margin-bottom: .4rem;
}

.reid-clue {
    font-size: .78rem;
    color: var(--text-muted);
    background: var(--surface);
    padding: .15rem .5rem;
    border-radius: 4px;
}

.reid-clue strong {
    color: var(--text);
}

.reid-arrow {
    font-size: .75rem;
    color: var(--deident);
    margin: .3rem 0;
    font-style: italic;
}

.reid-reveal {
    padding: .3rem .5rem;
    background: rgba(255, 107, 107, .1);
    border-radius: 4px;
    display: inline-block;
}

.reid-match {
    font-size: .8rem;
    color: var(--deident);
}

.reid-match strong {
    color: #ff8787;
}

/* Subjective anonymization */
.subj-controls {
    display: flex;
    align-items: center;
    gap: .8rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.subj-controls label {
    font-size: .85rem;
    font-weight: 600;
    color: var(--text-muted);
}

.subj-record-btns {
    display: flex;
    gap: .3rem;
    flex-wrap: wrap;
}

.subj-rec-btn {
    background: var(--surface2);
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: .3rem .7rem;
    border-radius: 4px;
    font-size: .78rem;
    cursor: pointer;
    transition: all .15s;
}

.subj-rec-btn.active, .subj-rec-btn:hover {
    background: var(--subjective);
    color: #fff;
    border-color: var(--subjective);
}

.subj-intro {
    background: rgba(34, 184, 207, .06);
    border: 1px solid rgba(34, 184, 207, .2);
    border-radius: 6px;
    padding: .8rem 1rem;
    margin-bottom: 1rem;
    font-size: .85rem;
    color: var(--text-muted);
    line-height: 1.5;
}

.subj-intro strong { color: var(--text); }
.subj-intro em { color: var(--subjective); font-style: normal; font-weight: 600; }

.subj-reviewers {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: .8rem;
    margin-bottom: 1.2rem;
}

.subj-reviewer-badge {
    background: var(--surface2);
    border-radius: 6px;
    padding: .7rem .9rem;
    border-left: 3px solid;
}

.subj-reviewer-name {
    font-weight: 700;
    font-size: .82rem;
    margin-bottom: .3rem;
}

.subj-reviewer-desc {
    font-size: .75rem;
    color: var(--text-muted);
    margin-bottom: .25rem;
    line-height: 1.4;
}

.subj-reviewer-context {
    font-size: .72rem;
    color: var(--text-muted);
    font-style: italic;
}

.subj-compare-table th {
    font-size: .7rem !important;
}

.cell-generalized {
    color: var(--subjective);
    font-style: italic;
}

.subj-inconsistency {
    margin-top: 1rem;
    background: rgba(255, 169, 77, .06);
    border: 1px solid rgba(255, 169, 77, .2);
    border-radius: 6px;
    padding: 1rem;
}

.subj-inconsistency-title {
    font-weight: 700;
    font-size: .85rem;
    color: var(--pseudo);
    margin-bottom: .6rem;
}

.subj-diff-row {
    display: flex;
    align-items: center;
    gap: .4rem;
    margin-bottom: .5rem;
    flex-wrap: wrap;
}

.subj-diff-field {
    font-weight: 600;
    font-size: .78rem;
    color: var(--text);
    min-width: 120px;
}

.subj-diff-val {
    font-size: .75rem;
    background: var(--surface2);
    padding: .2rem .5rem;
    border-radius: 4px;
    border-left: 2px solid;
    color: var(--text-muted);
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.subj-diff-vs {
    font-size: .65rem;
    color: var(--text-muted);
    font-style: italic;
}

.subj-inconsistency-note {
    margin-top: .8rem;
    font-size: .78rem;
    color: var(--text-muted);
    line-height: 1.5;
}

.subj-inconsistency-note strong {
    color: var(--pseudo);
}

.subj-usecases {
    margin-top: 1rem;
    padding: .8rem 1rem;
    background: var(--surface2);
    border-radius: 6px;
}

.subj-usecases-title {
    font-weight: 700;
    font-size: .82rem;
    color: var(--subjective);
    margin-bottom: .5rem;
}

.subj-usecase-tags {
    display: flex;
    flex-wrap: wrap;
    gap: .4rem;
    margin-bottom: .6rem;
}

.subj-tag {
    font-size: .72rem;
    background: rgba(34, 184, 207, .12);
    color: var(--subjective);
    padding: .2rem .6rem;
    border-radius: 12px;
    font-weight: 600;
}

.subj-usecase-note {
    font-size: .75rem;
    color: var(--text-muted);
    line-height: 1.4;
}

@media (max-width: 700px) {
    .subj-reviewers {
        grid-template-columns: 1fr;
    }
}

/* Loading spinner */
.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin .6s linear infinite;
    vertical-align: middle;
    margin-right: .4rem;
}

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

/* Footer */
footer {
    text-align: center;
    padding: 1.5rem;
    color: var(--text-muted);
    font-size: .8rem;
    border-top: 1px solid var(--border);
}

/* Responsive */
@media (max-width: 700px) {
    .techniques-grid {
        grid-template-columns: 1fr;
    }

    .controls-panel {
        flex-direction: column;
        align-items: stretch;
    }

    header h1 {
        font-size: 1.5rem;
    }
}