/*
 * WP Page Content Similarity Checker — Frontend & Admin Styles
 * Version: 1.0.0
 * ─────────────────────────────────────────────────────────────
 * All selectors are namespaced with .pcs-* to avoid conflicts
 * with the active theme.
 */

/* ── Custom properties (token layer) ──────────────────────────── */
:root {
    --pcs-font:        -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --pcs-radius:      10px;
    --pcs-radius-sm:   6px;
    --pcs-shadow:      0 2px 12px rgba(0,0,0,.08);
    --pcs-shadow-lg:   0 8px 32px rgba(0,0,0,.12);
    --pcs-border:      1px solid #e5e7eb;
    --pcs-gap:         1.25rem;

    /* Colours */
    --pcs-bg:          #f8f9fb;
    --pcs-card-bg:     #ffffff;
    --pcs-primary:     #2563eb;
    --pcs-primary-hov: #1d4ed8;
    --pcs-secondary:   #64748b;
    --pcs-text:        #1e293b;
    --pcs-muted:       #64748b;

    /* Highlight colours */
    --pcs-high-bg:     #dcfce7;
    --pcs-high-border: #16a34a;
    --pcs-high-text:   #15803d;
    --pcs-med-bg:      #fef9c3;
    --pcs-med-border:  #ca8a04;
    --pcs-med-text:    #92400e;
    --pcs-low-bg:      #f1f5f9;
    --pcs-low-border:  #cbd5e1;
    --pcs-low-text:    #475569;
}

/* ── Critical: ensure [hidden] is always respected ─────────────── */
/* Many WP themes omit the [hidden] reset, causing display:flex to win */
#pcs-wrapper [hidden],
#pcs-wrapper *[hidden] {
    display: none !important;
}

/* ── Wrapper ────────────────────────────────────────────────────── */
.pcs-wrapper {
    font-family: var(--pcs-font);
    color: var(--pcs-text);
    background: var(--pcs-bg);
    padding: 1.5rem;
    border-radius: var(--pcs-radius);
    max-width: 1200px;
    margin: 0 auto;
}

/* ── Card ───────────────────────────────────────────────────────── */
.pcs-card {
    background: var(--pcs-card-bg);
    border-radius: var(--pcs-radius);
    box-shadow: var(--pcs-shadow);
    padding: 1.75rem 2rem;
    margin-bottom: var(--pcs-gap);
}

/* ── Form heading ───────────────────────────────────────────────── */
.pcs-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--pcs-text);
    margin: 0 0 0.35rem;
}

.pcs-icon {
    width: 24px; height: 24px;
    stroke: var(--pcs-primary);
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    flex-shrink: 0;
}

.pcs-subtitle {
    color: var(--pcs-muted);
    font-size: .9rem;
    margin: 0 0 1.5rem;
}

/* ── URL inputs ─────────────────────────────────────────────────── */
.pcs-url-grid {
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: var(--pcs-gap);
    margin-bottom: 1rem;
}

.pcs-field { display: flex; flex-direction: column; gap: .4rem; }

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

.pcs-input-wrap {
    position: relative;
}

.pcs-input-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px; height: 16px;
    stroke: var(--pcs-muted);
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    pointer-events: none;
}

.pcs-input {
    width: 100%;
    box-sizing: border-box;
    padding: .65rem .9rem;
    border: var(--pcs-border);
    border-radius: var(--pcs-radius-sm);
    font-size: .9rem;
    font-family: var(--pcs-font);
    color: var(--pcs-text);
    background: #fff;
    transition: border-color .15s, box-shadow .15s;
    outline: none;
}

.pcs-input:focus {
    border-color: var(--pcs-primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}

.pcs-input::placeholder { color: #b0b8c9; }

/* ── Checkbox option ────────────────────────────────────────────── */
.pcs-options-row { margin-bottom: 1.25rem; }

.pcs-checkbox-label {
    display: flex;
    align-items: center;
    gap: .5rem;
    font-size: .875rem;
    color: var(--pcs-muted);
    cursor: pointer;
}

.pcs-checkbox-label input { accent-color: var(--pcs-primary); }

/* ── Buttons ────────────────────────────────────────────────────── */
.pcs-btn {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    padding: .6rem 1.3rem;
    border-radius: var(--pcs-radius-sm);
    font-size: .875rem;
    font-weight: 600;
    font-family: var(--pcs-font);
    cursor: pointer;
    border: 2px solid transparent;
    transition: background .15s, color .15s, border-color .15s, box-shadow .15s;
    text-decoration: none;
}

.pcs-btn:disabled {
    opacity: .55;
    cursor: not-allowed;
}

/* Primary */
.pcs-btn-primary {
    background: #111111;
    color: #fff;
}
.pcs-btn-primary:hover:not(:disabled) {
    background: #333333;
    box-shadow: 0 4px 12px rgba(0,0,0,.3);
}

/* Secondary (toggle) */
.pcs-btn-secondary {
    background: #f1f5f9;
    color: var(--pcs-secondary);
    border-color: transparent;
}
.pcs-btn-secondary:hover:not(:disabled),
.pcs-btn-secondary.pcs-active {
    background: var(--pcs-primary);
    color: #fff;
}

/* Outline */
.pcs-btn-outline {
    background: transparent;
    color: var(--pcs-primary);
    border-color: var(--pcs-primary);
}
.pcs-btn-outline:hover:not(:disabled) {
    background: rgba(37,99,235,.06);
}

.pcs-btn-icon {
    width: 16px; height: 16px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* ── Loading ────────────────────────────────────────────────────── */
.pcs-loading {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--pcs-card-bg);
    border-radius: var(--pcs-radius);
    box-shadow: var(--pcs-shadow);
    padding: 1.5rem 2rem;
    margin-bottom: var(--pcs-gap);
    font-size: .9rem;
    color: var(--pcs-muted);
}

.pcs-spinner {
    width: 28px; height: 28px;
    border: 3px solid #e2e8f0;
    border-top-color: var(--pcs-primary);
    border-radius: 50%;
    animation: pcs-spin .75s linear infinite;
    flex-shrink: 0;
}

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

/* ── Notice / Error ─────────────────────────────────────────────── */
.pcs-notice {
    display: flex;
    align-items: flex-start;
    gap: .75rem;
    padding: 1rem 1.25rem;
    border-radius: var(--pcs-radius-sm);
    margin-bottom: var(--pcs-gap);
    font-size: .9rem;
}

.pcs-notice-error {
    background: #fef2f2;
    border-left: 4px solid #ef4444;
    color: #991b1b;
}

.pcs-notice-icon {
    width: 20px; height: 20px;
    flex-shrink: 0;
    stroke: #ef4444;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    margin-top: 1px;
}

/* ── Score banner ───────────────────────────────────────────────── */
.pcs-score-banner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1.5rem;
    background: var(--pcs-card-bg);
    border-radius: var(--pcs-radius);
    box-shadow: var(--pcs-shadow-lg);
    padding: 1.75rem 2rem;
    margin-bottom: var(--pcs-gap);
}

.pcs-score-circle {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 110px; height: 110px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--pcs-primary), #7c3aed);
    color: #fff;
    flex-shrink: 0;
    box-shadow: 0 4px 20px rgba(37,99,235,.35);
}

.pcs-score-num {
    font-size: 1.75rem;
    font-weight: 800;
    line-height: 1;
}

.pcs-score-label {
    font-size: .7rem;
    text-transform: uppercase;
    letter-spacing: .08em;
    opacity: .85;
    margin-top: 3px;
}

/* Meta stats grid */
.pcs-meta-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem 2rem;
}

.pcs-meta-item {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.pcs-meta-value {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--pcs-text);
}

.pcs-meta-label {
    font-size: .75rem;
    color: var(--pcs-muted);
    text-transform: uppercase;
    letter-spacing: .05em;
}

/* ── Legend ─────────────────────────────────────────────────────── */
.pcs-legend {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem 1rem;
    margin-bottom: .75rem;
    font-size: .8rem;
}

.pcs-legend-item {
    padding: 3px 10px;
    border-radius: 20px;
    border: 1px solid transparent;
}

/* ── Toggle row ─────────────────────────────────────────────────── */
.pcs-toggle-row {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
    margin-bottom: 1rem;
}

/* ── Comparison view ────────────────────────────────────────────── */
.pcs-col-headers {
    display: grid;
    grid-template-columns: 1fr 80px 1fr;
    gap: .5rem;
    margin-bottom: .5rem;
    padding: .5rem .75rem;
    background: #f8fafc;
    border-radius: var(--pcs-radius-sm);
    font-size: .8rem;
    color: var(--pcs-muted);
}

.pcs-col-score-header {
    text-align: center;
}

.pcs-url-label {
    display: block;
    font-weight: 400;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 300px;
    color: var(--pcs-primary);
    font-size: .75rem;
}

/* Individual comparison rows */
.pcs-block-row {
    display: grid;
    grid-template-columns: 1fr 80px 1fr;
    gap: .5rem;
    margin-bottom: .5rem;
    align-items: stretch;
}

.pcs-block-cell {
    padding: .75rem 1rem;
    border-radius: var(--pcs-radius-sm);
    font-size: .875rem;
    line-height: 1.6;
    border-left: 3px solid transparent;
    word-break: break-word;
    transition: transform .1s;
}

.pcs-block-cell:empty {
    background: #f8f9fb;
    border-color: #e2e8f0;
    min-height: 40px;
}

/* High similarity — green */
.pcs-block-row.pcs-row-high .pcs-block-cell {
    background: var(--pcs-high-bg);
    border-color: var(--pcs-high-border);
    color: var(--pcs-high-text);
}

/* Medium — yellow */
.pcs-block-row.pcs-row-medium .pcs-block-cell {
    background: var(--pcs-med-bg);
    border-color: var(--pcs-med-border);
    color: var(--pcs-med-text);
}

/* Low / unique — neutral */
.pcs-block-row.pcs-row-low .pcs-block-cell,
.pcs-block-row.pcs-row-none .pcs-block-cell {
    background: var(--pcs-low-bg);
    border-color: var(--pcs-low-border);
    color: var(--pcs-low-text);
}

/* legend items mimic block colours */
.pcs-hl-high   { background: var(--pcs-high-bg); border-color: var(--pcs-high-border); color: var(--pcs-high-text); }
.pcs-hl-medium { background: var(--pcs-med-bg); border-color: var(--pcs-med-border); color: var(--pcs-med-text); }
.pcs-hl-low    { background: var(--pcs-low-bg); border-color: var(--pcs-low-border); color: var(--pcs-low-text); }

/* Score badge in middle column */
.pcs-block-score {
    display: flex;
    align-items: center;
    justify-content: center;
}

.pcs-score-pill {
    font-size: .7rem;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 20px;
    white-space: nowrap;
}

.pcs-row-high   .pcs-score-pill { background: var(--pcs-high-border); color: #fff; }
.pcs-row-medium .pcs-score-pill { background: var(--pcs-med-border); color: #fff; }
.pcs-row-low    .pcs-score-pill,
.pcs-row-none   .pcs-score-pill { background: #cbd5e1; color: #475569; }

/* ── Raw text view ──────────────────────────────────────────────── */
.pcs-raw-cols {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--pcs-gap);
}

@media (max-width: 700px) {
    .pcs-raw-cols { grid-template-columns: 1fr; }
}

.pcs-raw-col-title {
    font-size: .8rem;
    font-weight: 600;
    color: var(--pcs-muted);
    margin-bottom: .5rem;
    text-transform: uppercase;
    letter-spacing: .05em;
}

.pcs-raw-pre {
    background: #0f172a;
    color: #e2e8f0;
    padding: 1rem;
    border-radius: var(--pcs-radius-sm);
    font-size: .78rem;
    line-height: 1.65;
    overflow-x: auto;
    max-height: 400px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-word;
    margin: 0;
}

/* ── View switcher ──────────────────────────────────────────────── */
.pcs-view { display: block; }

/* ── Admin styles ───────────────────────────────────────────────── */
.pcs-admin-wrap { max-width: 1100px; }

.pcs-admin-info-box {
    background: #e8f0fe;
    border-left: 4px solid var(--pcs-primary);
    padding: .85rem 1.25rem;
    margin: 1rem 0 1.5rem;
    border-radius: 0 var(--pcs-radius-sm) var(--pcs-radius-sm) 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: .5rem .75rem;
    font-size: .9rem;
}

.pcs-admin-info-box code {
    background: #c7d7fc;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: .875rem;
}

.pcs-admin-info-sub { color: var(--pcs-muted); font-size: .85rem; }

.pcs-admin-empty {
    color: var(--pcs-muted);
    font-style: italic;
    margin-top: 1rem;
}

.pcs-admin-count {
    font-size: .875rem;
    color: var(--pcs-muted);
    margin-bottom: .5rem;
}

.pcs-history-table .pcs-url-cell { max-width: 240px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Score badge in history table */
.pcs-score-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 20px;
    font-size: .8rem;
    font-weight: 700;
}
.pcs-score-badge--high   { background: var(--pcs-high-bg); color: var(--pcs-high-text); border: 1px solid var(--pcs-high-border); }
.pcs-score-badge--medium { background: var(--pcs-med-bg); color: var(--pcs-med-text); border: 1px solid var(--pcs-med-border); }
.pcs-score-badge--low    { background: var(--pcs-low-bg); color: var(--pcs-low-text); border: 1px solid var(--pcs-low-border); }

/* ── Responsive tweaks ──────────────────────────────────────────── */
@media (max-width: 700px) {
    .pcs-card { padding: 1.25rem; }
    .pcs-block-row { grid-template-columns: 1fr; }
    .pcs-block-score { display: none; }
    .pcs-col-headers { grid-template-columns: 1fr 1fr; }
    .pcs-col-score-header { display: none; }
    .pcs-score-banner { flex-direction: column; align-items: flex-start; }
}