/* ============================================================
   Design Tokens
   ============================================================ */
:root {
    --color-bg:          #ffffff;
    --color-bg-secondary:#f7f7f7;
    --color-surface:     #ffffff;
    --color-border:      #e5e5e5;
    --color-text:        #111111;
    --color-text-muted:  #666666;
    --color-primary:     #0070f3;
    --color-primary-hover:#0051a8;
    --color-success:     #0cad60;

    --font-sans: 'Inter', 'Roboto', 'Helvetica Neue', Arial, sans-serif;

    --radius-sm:  4px;
    --radius-md:  8px;
    --radius-lg:  12px;

    --shadow-sm:  0 1px 3px rgba(0,0,0,.08);
    --shadow-md:  0 4px 12px rgba(0,0,0,.10);

    --topbar-height: 56px;
    --sidebar-width: 220px;
    --content-max:   760px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-bg:          #0a0a0a;
        --color-bg-secondary:#111111;
        --color-surface:     #1a1a1a;
        --color-border:      #2a2a2a;
        --color-text:        #ededed;
        --color-text-muted:  #888888;
        --color-primary:     #3b82f6;
        --color-primary-hover:#60a5fa;
        --shadow-sm:  0 1px 3px rgba(0,0,0,.4);
        --shadow-md:  0 4px 12px rgba(0,0,0,.5);
    }
}

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

html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ============================================================
   Topbar
   ============================================================ */
.topbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--topbar-height);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    padding: 0 24px;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.topbar-logo {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
}
.topbar-logo:hover { text-decoration: none; color: var(--color-primary); }

/* ============================================================
   Layout
   ============================================================ */
.layout {
    display: grid;
    grid-template-columns: var(--sidebar-width) minmax(0, 1fr) 300px;
    margin-top: var(--topbar-height);
    min-height: calc(100vh - var(--topbar-height));
}

/* ============================================================
   Sidebar
   ============================================================ */
.sidebar {
    position: sticky;
    top: var(--topbar-height);
    height: calc(100vh - var(--topbar-height));
    overflow-y: auto;
    background: var(--color-bg-secondary);
    border-right: 1px solid var(--color-border);
    padding: 20px 12px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    scrollbar-width: thin;
    scrollbar-color: var(--color-border) transparent;
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 4px; }
.sidebar::-webkit-scrollbar-thumb:hover { background: var(--color-text-muted); }

.sidebar-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    padding: 2px 8px;
    margin-bottom: 2px;
    font-family: var(--font-sans);
}

.sidebar-label:hover { color: var(--color-text); }

.sidebar-chevron { transition: transform 0.2s ease; flex-shrink: 0; }
.sidebar-label.is-collapsed .sidebar-chevron { transform: rotate(-90deg); }

.nav-list {
    list-style: none;
    overflow: hidden;
    max-height: 800px;
    transition: max-height 0.25s ease;
}

.nav-list.is-collapsed { max-height: 0; }

.nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--color-text-muted);
    transition: background 0.15s, color 0.15s;
}
.nav-link:hover { background: var(--color-border); color: var(--color-text); text-decoration: none; }
.nav-link.active { background: var(--color-primary); color: #fff; }
.nav-link.active svg { stroke: #fff; }


/* ============================================================
   Main Content
   ============================================================ */
.content {
    padding: 40px 48px;
    max-width: calc(var(--content-max) + 96px);
}

/* ============================================================
   Card
   ============================================================ */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-sm);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 4px;
}

.card-description {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: 28px;
}

/* ============================================================
   Form Components
   ============================================================ */
.form-group { margin-bottom: 20px; }

.form-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 8px;
}

textarea,
input[type="text"],
input[type="url"],
input[type="number"] {
    width: 100%;
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    color: var(--color-text);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 12px 14px;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
    resize: vertical;
}

textarea:focus,
input[type="text"]:focus,
input[type="url"]:focus,
input[type="number"]:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 112, 243, 0.15);
}

.input-readonly {
    background: var(--color-bg-secondary);
    cursor: text;
    font-family: 'Courier New', 'Lucida Console', monospace;
    font-size: 0.9375rem;
    color: var(--color-primary);
    letter-spacing: 0.01em;
}

/* ============================================================
   Button
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background 0.15s, transform 0.1s;
    user-select: none;
}
.btn:active { transform: scale(0.98); }

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

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

.btn-success {
    background: var(--color-success) !important;
}

/* ============================================================
   Contrast Checker
   ============================================================ */
.contrast-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 24px;
}

.color-input-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.color-picker {
    width: 44px;
    height: 44px;
    padding: 2px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    background: none;
    flex-shrink: 0;
}

.color-hex {
    flex: 1;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    letter-spacing: 0.04em;
}

.contrast-preview {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 32px;
    margin-bottom: 24px;
    min-height: 110px;
    display: flex;
    align-items: center;
    transition: background-color 0.15s, color 0.15s;
    background-color: #ffffff;
}

.preview-sample {
    font-size: 1rem;
    line-height: 1.7;
    transition: color 0.15s;
    color: #111111;
}

.contrast-results {
    display: flex;
    align-items: flex-start;
    gap: 32px;
    flex-wrap: wrap;
}

.contrast-ratio-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 20px 28px;
    min-width: 130px;
}

.contrast-ratio-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    margin-bottom: 6px;
}

.contrast-ratio-value {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--color-text);
    font-variant-numeric: tabular-nums;
}

.contrast-badges {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.badge-group {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 10px 14px;
    gap: 8px;
}

.badge-label {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.badge-label small {
    display: block;
    font-size: 0.7rem;
    opacity: 0.7;
}

.badge {
    font-size: 0.75rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 20px;
    white-space: nowrap;
    color: #fff;
    background: var(--color-border);
}

.badge-pass { background: #0cad60; }
.badge-fail { background: #e5383b; }

@media (max-width: 600px) {
    .contrast-inputs  { grid-template-columns: 1fr; }
    .contrast-badges  { grid-template-columns: 1fr; }
    .contrast-results { flex-direction: column; }
}

/* ============================================================
   Hash Generator
   ============================================================ */
.radio-group {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s;
    font-size: 0.9rem;
    font-weight: 500;
}

.radio-label:has(input:checked) {
    border-color: var(--color-primary);
    background: rgba(0, 112, 243, 0.06);
    color: var(--color-primary);
}

.radio-label input[type="radio"] {
    accent-color: var(--color-primary);
    width: 15px;
    height: 15px;
}

.radio-hint {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--color-text-muted);
    margin-left: 2px;
}

.radio-label:has(input:checked) .radio-hint {
    color: var(--color-primary);
    opacity: 0.75;
}

.input-copy-row {
    display: flex;
    gap: 10px;
    align-items: stretch;
}

.input-copy-row .input-readonly {
    flex: 1;
    min-width: 0;
}

.hash-output-loading {
    opacity: 0.45;
    font-style: italic;
}

/* ============================================================
   UTM Builder
   ============================================================ */
.required-mark {
    color: #e5383b;
    font-weight: 700;
}

.utm-section-label {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    margin: 20px 0 12px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--color-border);
}

.utm-section-label--optional {
    color: var(--color-text-muted);
    opacity: 0.7;
}

.utm-fields-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 20px;
}

.field-hint {
    display: block;
    margin-top: 4px;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.input-copy-row--tall {
    align-items: flex-start;
}

.input-copy-row--tall .input-readonly {
    resize: vertical;
    min-height: 72px;
    font-size: 0.85rem;
    line-height: 1.5;
    padding-top: 10px;
}

@media (max-width: 600px) {
    .utm-fields-group { grid-template-columns: 1fr; }
}

/* ============================================================
   Color Palette Generator
   ============================================================ */
.palette-controls {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0 32px;
    align-items: start;
    margin-bottom: 28px;
}

.palette-swatches {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
}

.color-swatch {
    border-radius: var(--radius-md);
    height: 140px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    padding: 12px 8px;
    gap: 4px;
    transition: transform 0.18s, box-shadow 0.18s;
    box-shadow: 0 1px 3px rgba(0,0,0,0.12);
    user-select: none;
    overflow: hidden;
}

.color-swatch:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.18);
}

.swatch-hex {
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-align: center;
    line-height: 1;
}

.swatch-copy-hint {
    font-size: 0.65rem;
    font-weight: 500;
    text-align: center;
    line-height: 1;
}

@media (max-width: 640px) {
    .palette-controls { grid-template-columns: 1fr; }
    .palette-swatches { grid-template-columns: repeat(5, 1fr); gap: 6px; }
    .color-swatch     { height: 100px; padding: 8px 4px; }
    .swatch-copy-hint { display: none; }
}

/* ============================================================
   SVG Optimizer
   ============================================================ */
.svg-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    align-items: start;
}

.svg-col {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.svg-dropzone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    padding: 28px 20px;
    cursor: pointer;
    color: var(--color-text-muted);
    transition: border-color 0.15s, background 0.15s, color 0.15s;
    text-align: center;
    user-select: none;
}

.svg-dropzone:hover,
.svg-dropzone:focus-visible {
    border-color: var(--color-primary);
    background: rgba(0, 112, 243, 0.04);
    color: var(--color-primary);
    outline: none;
}

.svg-dropzone.dropzone-active {
    border-color: var(--color-primary);
    background: rgba(0, 112, 243, 0.08);
    color: var(--color-primary);
}

.dropzone-text {
    font-size: 0.9rem;
    font-weight: 600;
}

.dropzone-sub {
    font-size: 0.78rem;
    opacity: 0.7;
}

.svg-col-divider {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 14px 0 10px;
    color: var(--color-text-muted);
    font-size: 0.78rem;
}

.svg-col-divider::before,
.svg-col-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

.svg-stats {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 10px;
    margin-bottom: 14px;
}

.svg-stat {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 10px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.svg-stat--highlight {
    border-color: #6ee7b7;
    background: #d1fae5;
}

.svg-stat-label {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--color-text-muted);
}

.svg-stat--highlight .svg-stat-label { color: #065f46; }

.svg-stat-value {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-text);
    font-variant-numeric: tabular-nums;
}

.svg-stat--highlight .svg-stat-value { color: #065f46; }

.svg-preview-block {
    margin-top: 12px;
}

.svg-preview {
    background: repeating-conic-gradient(#e5e7eb 0% 25%, #fff 0% 50%) 0 0 / 16px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 12px;
}

.svg-preview img {
    max-width: 100%;
    max-height: 220px;
    object-fit: contain;
}

.svg-error {
    margin-top: 12px;
    font-size: 0.85rem;
    color: #991b1b;
    font-weight: 500;
}

@media (max-width: 768px) {
    .svg-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   SHA-512 / CRC32 Generator
   ============================================================ */
.checksum-results {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 8px;
}

.checksum-block {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.checksum-block-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    padding: 8px 12px;
}

.checksum-block-title {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
}

.checksum-output {
    border-radius: 0;
    border: none;
    resize: none;
    font-size: 0.8rem;
    line-height: 1.6;
    word-break: break-all;
}

/* ============================================================
   Argon2id Generator / Verifier
   ============================================================ */
.argon2-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    align-items: start;
}

.argon2-block {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.argon2-block-title {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--color-text-muted);
    margin-bottom: 18px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}

.argon2-alert {
    margin-top: 16px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transition: opacity 0.25s ease, max-height 0.25s ease, padding 0.25s ease;
    padding-top: 0;
    padding-bottom: 0;
}

.argon2-alert.is-visible {
    opacity: 1;
    max-height: 80px;
    padding-top: 12px;
    padding-bottom: 12px;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.alert-danger {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

@media (max-width: 700px) {
    .argon2-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   URL Parser
   ============================================================ */
.parser-hint {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: 8px;
}

.parser-section {
    margin-top: 28px;
}

.parser-section-title {
    display: block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    margin-bottom: 14px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--color-border);
}

.parser-components {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 20px;
}

.parser-field {
    margin-bottom: 16px;
}

.parser-field-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    margin-bottom: 6px;
}

.parser-params-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.parser-param-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    flex-wrap: wrap;
}

.param-key {
    color: var(--color-primary);
    font-weight: 700;
    word-break: break-all;
}

.param-sep {
    color: var(--color-text-muted);
    font-weight: 400;
}

.param-val {
    color: var(--color-text);
    word-break: break-all;
}

@media (max-width: 600px) {
    .parser-components { grid-template-columns: 1fr; }
}

/* ============================================================
   URL Encoder / Decoder
   ============================================================ */
.encoder-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 0 16px;
    align-items: start;
}

.encoder-panel {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.encoder-panel textarea {
    border-top-left-radius: 0;
    border-top-right-radius: 0;
    border-top: none;
    resize: vertical;
    min-height: 180px;
    font-size: 0.875rem;
    line-height: 1.55;
}

.encoder-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-bottom: none;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    padding: 8px 12px;
    gap: 8px;
}

.encoder-panel-title {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
}

.encoder-panel-actions {
    display: flex;
    gap: 4px;
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-muted);
    border: none;
    padding: 4px 8px;
    font-size: 0.75rem;
    font-weight: 500;
}
.btn-ghost:hover { background: var(--color-border); color: var(--color-text); }

.btn-sm {
    padding: 4px 10px;
    font-size: 0.75rem;
    gap: 5px;
}

.encoder-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 44px; /* alinha com o meio dos textareas */
    color: var(--color-text-muted);
    opacity: 0.5;
}

.encoder-error {
    margin-top: 6px;
    font-size: 0.8rem;
    color: #e5383b;
    font-weight: 500;
}

@media (max-width: 640px) {
    .encoder-grid {
        grid-template-columns: 1fr;
        gap: 20px 0;
    }
    .encoder-divider {
        padding-top: 0;
        transform: rotate(90deg);
        width: fit-content;
        margin: 0 auto;
    }
}

/* ============================================================
   Toast Notification
   ============================================================ */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 18px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-success);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
    max-width: 320px;
    pointer-events: none;
}
.toast.toast-error {
    border-left-color: #e53e3e;
}
.toast.toast-enter {
    opacity: 0;
    transform: translateY(8px);
}
.toast.toast-visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.2s ease, transform 0.2s ease;
}
.toast.toast-leave {
    opacity: 0;
    transition: opacity 0.2s ease;
}

/* ============================================================
   Ad Placeholder
   ============================================================ */
.ad-placeholder {
    min-height: 90px;
    background: var(--color-bg-secondary);
    border: 1px dashed #ccc;
    border-radius: var(--radius-md);
    margin: 30px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    letter-spacing: 0.03em;
    user-select: none;
}

/* ============================================================
   Tool Content (SEO / Educativo)
   ============================================================ */
.tool-content {
    margin-top: 8px;
    padding: 0 4px;
}
.tool-content h2 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-text);
    line-height: 1.4;
}
.tool-content h3 {
    font-size: 0.95rem;
    font-weight: 600;
    margin: 22px 0 6px;
    color: var(--color-text);
}
.tool-content p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.75;
    margin: 0;
}

/* ============================================================
   Sidebar — NuAto Promo Card
   ============================================================ */
.nuato-promo-card {
    background: linear-gradient(145deg, #0d0d0d 0%, #1a1a2e 100%);
    border-radius: var(--radius-lg);
    padding: 1.25rem 1rem 1rem;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35), 0 1px 0 rgba(255,255,255,0.04) inset;
    display: flex;
    flex-direction: column;
    gap: 10px;
    position: relative;
    overflow: hidden;
}
.nuato-promo-card::before {
    content: '';
    position: absolute;
    top: -40px;
    right: -40px;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0,112,243,0.18) 0%, transparent 70%);
    pointer-events: none;
}
.nuato-badge {
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: rgba(255,255,255,0.35);
    display: block;
}
.nuato-logo {
    font-size: 1.3rem;
    font-weight: 800;
    color: #ffffff;
    margin: 0;
    letter-spacing: -0.02em;
    line-height: 1;
}
.nuato-logo span {
    color: #0070f3;
}
.nuato-tagline {
    font-size: 0.78rem;
    line-height: 1.55;
    color: rgba(255,255,255,0.65);
    margin: 0;
}
.nuato-services {
    list-style: none;
    margin: 2px 0 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 7px;
}
.nuato-service-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.78rem;
    font-weight: 500;
    color: rgba(255,255,255,0.80);
}
.nuato-service-item svg {
    flex-shrink: 0;
    color: #0070f3;
    opacity: 0.9;
}
.btn-nuato-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    width: 100%;
    margin-top: 4px;
    padding: 10px 12px;
    background: #25d366;
    color: #fff;
    font-size: 0.82rem;
    font-weight: 700;
    border-radius: var(--radius-md);
    text-decoration: none;
    box-shadow: 0 2px 12px rgba(37, 211, 102, 0.35);
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.btn-nuato-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.45);
    color: #fff;
}

/* ============================================================
   Knowledge Card — Pílulas de Conhecimento
   ============================================================ */
.knowledge-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 14px 12px 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.knowledge-card-header {
    display: flex;
    align-items: center;
    gap: 6px;
}

.badge-type {
    display: inline-block;
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 2px 7px;
    border-radius: 20px;
    background: #dbeafe;
    color: #1d4ed8;
}

.badge-type[data-type="Curiosidade"] {
    background: #fef3c7;
    color: #b45309;
}

.badge-type[data-type="História"] {
    background: #ede9fe;
    color: #6d28d9;
}

@media (prefers-color-scheme: dark) {
    .badge-type {
        background: #1e3a5f;
        color: #93c5fd;
    }
    .badge-type[data-type="Curiosidade"] {
        background: #451a03;
        color: #fcd34d;
    }
    .badge-type[data-type="História"] {
        background: #2e1065;
        color: #c4b5fd;
    }
}

.knowledge-title {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.35;
    margin: 0;
}

.knowledge-content {
    font-size: 0.78rem;
    color: var(--color-text-muted);
    line-height: 1.55;
    margin: 0;
}

.knowledge-btn {
    align-self: flex-start;
    margin-top: 4px;
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    font-size: 0.73rem;
    font-weight: 600;
    padding: 4px 10px;
    cursor: pointer;
    transition: border-color 0.15s, color 0.15s;
}

.knowledge-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* ============================================================
   Sidebar Direita
   ============================================================ */
.sidebar-right {
    position: sticky;
    top: var(--topbar-height);
    height: calc(100vh - var(--topbar-height));
    overflow-y: auto;
    background: var(--color-bg-secondary);
    border-left: 1px solid var(--color-border);
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Placeholder AdSense */
.ad-placeholder {
    background: var(--color-surface);
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-md);
    min-height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
}
/* Na sidebar direita o placeholder ocupa menos altura para não suprimir o card NuAto */
.sidebar-right .ad-placeholder {
    min-height: 90px;
    max-height: 100px;
}
.ad-placeholder-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    opacity: 0.5;
}

/* ============================================================
   JSON Formatter
   ============================================================ */
.json-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

.json-textarea {
    width: 100%;
    min-height: 260px;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.82rem;
    line-height: 1.6;
    padding: 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    color: var(--color-text);
    resize: vertical;
}

.json-textarea.input-readonly {
    background: var(--color-bg-secondary);
    color: var(--color-primary);
}

.json-textarea.json-output--error {
    color: #dc2626;
    background: #fef2f2;
}

@media (prefers-color-scheme: dark) {
    .json-textarea.json-output--error {
        color: #f87171;
        background: #1f0606;
    }
}

.json-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

@media (max-width: 640px) {
    .json-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   ROI / ROAS Calculator
   ============================================================ */
.roi-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

@media (max-width: 640px) {
    .roi-grid { grid-template-columns: 1fr; }
}

.roi-results {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

@media (max-width: 640px) {
    .roi-results { grid-template-columns: 1fr; }
}

.roi-result-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 20px 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    text-align: center;
    transition: border-color 0.2s;
}

.roi-result-card--negative {
    border-color: #dc2626;
    background: #fef2f2;
}

@media (prefers-color-scheme: dark) {
    .roi-result-card--negative {
        border-color: #f87171;
        background: #1f0606;
    }
}

.roi-result-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-muted);
}

.roi-result-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
}

.roi-result-card--negative .roi-result-value {
    color: #dc2626;
}

@media (prefers-color-scheme: dark) {
    .roi-result-card--negative .roi-result-value { color: #f87171; }
}

.roi-result-sub {
    font-size: 0.72rem;
    color: var(--color-text-muted);
}

/* ============================================================
   Bulk UTM Generator
   ============================================================ */
.bulk-utm-optional-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

@media (max-width: 640px) {
    .bulk-utm-optional-row {
        grid-template-columns: 1fr;
    }
}

/* ============================================================
   PX ↔ REM Converter
   ============================================================ */
.px-rem-base-group {
    max-width: 280px;
}

.px-rem-base-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.px-rem-base-row input {
    width: 90px;
    text-align: center;
}

.px-rem-base-unit {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.px-rem-converter-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 1.5rem;
    align-items: start;
    margin-top: 1.5rem;
}

.px-rem-block {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.px-rem-block .form-label {
    margin-bottom: 0;
}

.px-rem-arrow {
    color: var(--color-text-muted);
    align-self: center;
}

.px-rem-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 2rem;
    color: var(--color-text-muted);
}

@media (max-width: 600px) {
    .px-rem-converter-grid {
        grid-template-columns: 1fr;
    }

    .px-rem-divider {
        padding-top: 0;
        transform: rotate(90deg);
    }
}

/* ============================================================
   CSS Box Shadow Generator
   ============================================================ */
.bs-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    align-items: start;
}

.bs-controls {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.bs-colors-row {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 12px;
    align-items: end;
}

.bs-color-input {
    width: 48px;
    height: 36px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 2px;
    cursor: pointer;
    background: none;
}

.bs-inset-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--color-text);
}

.bs-preview-area {
    display: flex;
    align-items: center;
    justify-content: center;
}

.bs-preview-bg {
    width: 100%;
    aspect-ratio: 1;
    max-width: 260px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #ffffff;
    border: 1px solid var(--color-border);
    transition: background-color 0.2s;
}

.bs-preview-box {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    box-shadow: 4px 4px 10px 0px rgba(0,0,0,0.30);
    transition: box-shadow 0.1s;
}

.bs-result-textarea {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.85rem;
    min-height: 64px;
    resize: vertical;
    line-height: 1.5;
    flex: 1;
}

/* ============================================================
   CSS Gradient Generator
   ============================================================ */
.grad-preview {
    width: 100%;
    height: 140px;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border: 1px solid var(--color-border);
    transition: background 0.15s;
}

.grad-controls {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.grad-controls-row {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 16px;
    align-items: end;
}

.grad-select {
    height: 36px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    color: var(--color-text);
    padding: 0 10px;
    font-size: 0.875rem;
    cursor: pointer;
}

.grad-colors-row {
    display: flex;
    align-items: flex-end;
    gap: 16px;
}

.grad-arrow {
    font-size: 1.5rem;
    color: var(--color-text-muted);
    padding-bottom: 6px;
}

/* ============================================================
   Password Generator
   ============================================================ */
.pw-output-area {
    margin-bottom: 20px;
}

.pw-result-input {
    width: 100%;
    font-family: 'Courier New', Courier, monospace;
    font-size: 1.1rem;
    letter-spacing: 0.05em;
    margin-bottom: 10px;
}

.pw-action-row {
    display: flex;
    gap: 10px;
}

.pw-strength-area {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.pw-strength-bar {
    flex: 1;
    height: 8px;
    background: var(--color-border);
    border-radius: 4px;
    overflow: hidden;
}

.pw-strength-fill {
    height: 100%;
    width: 0%;
    border-radius: 4px;
    transition: width 0.3s, background-color 0.3s;
}

.pw-strength-fill.weak   { width: 33%; background-color: #ef4444; }
.pw-strength-fill.medium { width: 66%; background-color: #f59e0b; }
.pw-strength-fill.strong { width: 100%; background-color: var(--color-success); }

.pw-strength-label {
    font-size: 0.8rem;
    font-weight: 600;
    min-width: 48px;
    color: var(--color-text-muted);
}

.pw-controls {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.pw-checkboxes {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

@media (max-width: 600px) {
    .bs-layout {
        grid-template-columns: 1fr;
    }

    .bs-colors-row {
        grid-template-columns: auto 1fr auto;
    }

    .grad-controls-row {
        grid-template-columns: 1fr;
    }

    .pw-checkboxes {
        grid-template-columns: 1fr;
    }

    .wc-metrics {
        grid-template-columns: repeat(3, 1fr);
    }

    .lorem-controls {
        flex-direction: column;
    }
}

/* ============================================================
   Word Counter
   ============================================================ */
.wc-metrics {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
    margin-bottom: 8px;
}

.wc-metric-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 14px 12px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.wc-metric-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
    letter-spacing: -0.02em;
}

.wc-metric-label {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.wc-density-table-wrap {
    overflow-x: auto;
}

.wc-density-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.wc-density-table th,
.wc-density-table td {
    padding: 8px 14px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.wc-density-table th {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.wc-density-table td:first-child {
    color: var(--color-text-muted);
    width: 36px;
}

.wc-density-empty {
    color: var(--color-text-muted);
    font-style: italic;
    padding: 16px 14px;
}

/* ============================================================
   Lorem Ipsum
   ============================================================ */
.lorem-controls {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    align-items: flex-end;
    margin-bottom: 8px;
}

.lorem-controls .form-group {
    margin-bottom: 0;
}

.lorem-select {
    width: 100%;
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    color: var(--color-text);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 12px 14px;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
    cursor: pointer;
    min-width: 180px;
}

.lorem-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 112, 243, 0.15);
}

/* ============================================================
   Case Converter
   ============================================================ */
.cc-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 4px;
}

.cc-btn.is-active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

/* ============================================================
   QR Generator
   ============================================================ */
.qr-options {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 8px;
}
.qr-options .form-group {
    flex: 1;
    min-width: 120px;
}
.qr-preview-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 180px;
    margin-top: 20px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 24px;
}
#qr-canvas { display: none; border-radius: var(--radius-sm); }
.qr-placeholder-text {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* ============================================================
   Meta Tags
   ============================================================ */
.mt-output {
    font-family: 'Fira Mono', 'Menlo', 'Consolas', monospace;
    font-size: 0.8rem;
    line-height: 1.6;
    resize: vertical;
}

/* ============================================================
   My IP
   ============================================================ */
.ip-display-wrap {
    text-align: center;
    padding: 32px 24px 16px;
}
.ip-display {
    font-size: 2.5rem;
    font-weight: 700;
    font-family: 'Fira Mono', 'Menlo', 'Consolas', monospace;
    color: var(--color-primary);
    letter-spacing: 0.02em;
    word-break: break-all;
}
.ip-label {
    color: var(--color-text-muted);
    font-size: 0.85rem;
    margin-top: 8px;
}
.ip-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-top: 16px;
    padding-bottom: 8px;
}

/* ============================================================
   CSV ↔ JSON Converter
   ============================================================ */
.cj-direction-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}
.cj-direction-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: .04em;
}
.cj-select {
    flex: 1;
    max-width: 240px;
}
.cj-columns {
    display: flex;
    gap: 16px;
}
.cj-col { flex: 1; min-width: 0; }
.cj-options {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 24px;
    margin-top: 12px;
    padding: 12px 16px;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}
.cj-error {
    margin-top: 10px;
    padding: 10px 14px;
    background: #fff0f0;
    border: 1px solid #fca5a5;
    border-radius: var(--radius-md);
    color: #b91c1c;
    font-size: 0.85rem;
}
@media (prefers-color-scheme: dark) {
    .cj-error { background: #3f0000; border-color: #7f1d1d; color: #fca5a5; }
}

@media (max-width: 640px) {
    .cj-columns { flex-direction: column; }
    .cj-select { max-width: 100%; }
}

/* ============================================================
   UUID / GUID Generator
   ============================================================ */
.uuid-controls {
    display: flex;
    gap: 16px;
    align-items: flex-end;
    flex-wrap: wrap;
    margin-bottom: 20px;
}
.uuid-format-row {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.uuid-format-row .radio-group {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 6px 16px;
}

/* ============================================================
   SQL Formatter
   ============================================================ */
.sf-top-bar {
    display: flex;
    gap: 16px;
    align-items: flex-end;
    flex-wrap: wrap;
    margin-bottom: 20px;
    padding: 14px 16px;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}
.sf-columns {
    display: flex;
    gap: 16px;
}
.sf-col { flex: 1; min-width: 0; }
.sf-error {
    margin-top: 10px;
    padding: 10px 14px;
    background: #fff0f0;
    border: 1px solid #fca5a5;
    border-radius: var(--radius-md);
    color: #b91c1c;
    font-size: 0.85rem;
}
@media (prefers-color-scheme: dark) {
    .sf-error { background: #3f0000; border-color: #7f1d1d; color: #fca5a5; }
}

@media (max-width: 640px) {
    .sf-columns { flex-direction: column; }
    .sf-top-bar { flex-direction: column; align-items: stretch; }
}

/* ============================================================
   Image → Base64
   ============================================================ */
.ib64-dropzone {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    padding: 40px 24px;
    text-align: center;
    cursor: pointer;
    color: var(--color-text-muted);
    transition: border-color 0.2s, background 0.2s;
}
.ib64-dropzone:hover,
.ib64-dropzone.is-over {
    border-color: var(--color-primary);
    background: color-mix(in srgb, var(--color-primary) 6%, transparent);
}
.ib64-dropzone svg { margin-bottom: 12px; opacity: 0.5; }
.ib64-dropzone p { margin: 0; line-height: 1.6; }
.ib64-browse-label {
    color: var(--color-primary);
    cursor: pointer;
    text-decoration: underline;
}
.ib64-preview-wrap {
    margin-top: 20px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    flex-wrap: wrap;
}
.ib64-preview-img {
    max-width: 180px;
    max-height: 180px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    object-fit: contain;
    background: var(--color-bg-secondary);
}
.ib64-meta {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    line-height: 1.8;
}

/* ============================================================
   Image Placeholder Generator
   ============================================================ */
.iph-controls { margin-bottom: 20px; }
.iph-row {
    display: flex;
    gap: 16px;
}
.iph-row .form-group { flex: 1; }
.iph-color-row {
    display: flex;
    align-items: center;
    gap: 8px;
}
.iph-color-input {
    width: 40px;
    height: 38px;
    padding: 2px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    background: transparent;
    flex-shrink: 0;
}
.iph-hex-input { flex: 1; font-family: monospace; }
.iph-preview-wrap {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px 0;
    overflow: auto;
}
.iph-canvas {
    max-width: 100%;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    display: block;
}
.iph-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 8px;
}

@media (max-width: 600px) {
    .iph-row { flex-direction: column; gap: 0; }
}

/* ============================================================
   Text Cleaner
   ============================================================ */
.tc-options {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 24px;
    margin-bottom: 20px;
    padding: 14px 16px;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}
.tc-columns {
    display: flex;
    gap: 16px;
}
.tc-col { flex: 1; min-width: 0; }
.tc-stats {
    margin-top: 12px;
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}
.tc-stats span {
    padding: 4px 10px;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
}

@media (max-width: 600px) {
    .tc-columns { flex-direction: column; }
}

/* ============================================================
   Home — Hub / Vitrine
   ============================================================ */
body.page-home .content {
    max-width: none;
}

.home-wrap {
    max-width: 960px;
}

.home-hero {
    margin-bottom: 32px;
}

.home-hero-title {
    font-size: 1.875rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1.2;
    margin-bottom: 12px;
}

.home-hero-desc {
    font-size: 1rem;
    color: var(--color-text-muted);
    max-width: 560px;
    line-height: 1.6;
}

.home-search-wrap {
    margin-bottom: 48px;
}

.home-search-inner {
    position: relative;
    max-width: 500px;
}

.home-search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    pointer-events: none;
    flex-shrink: 0;
}

.home-search-inner input[type="search"] {
    width: 100%;
    font-family: var(--font-sans);
    font-size: 1rem;
    color: var(--color-text);
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 13px 16px 13px 44px;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
    -webkit-appearance: none;
    appearance: none;
}

.home-search-inner input[type="search"]:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 112, 243, 0.12);
}

.home-search-inner input[type="search"]::-webkit-search-cancel-button {
    -webkit-appearance: none;
}

.home-no-results {
    margin-top: 10px;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.home-category {
    margin-bottom: 48px;
}

.home-category.hidden {
    display: none;
}

.home-category-title {
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}

.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 14px;
}

.tool-card {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 16px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--color-text);
    transition: box-shadow 0.2s, border-color 0.2s, transform 0.15s;
    box-shadow: var(--shadow-sm);
}

.tool-card:hover {
    text-decoration: none;
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
    transform: translateY(-2px);
    color: var(--color-text);
}

.tool-card.hidden {
    display: none;
}

.tool-card-icon {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-sm);
    color: var(--color-primary);
}

.tool-card-icon svg {
    stroke: var(--color-primary);
}

.tool-card-body {
    min-width: 0;
}

.tool-card-title {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.tool-card-desc {
    font-size: 0.775rem;
    color: var(--color-text-muted);
    line-height: 1.45;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

@media (max-width: 600px) {
    .home-hero-title { font-size: 1.5rem; }
    .tool-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
    border-top: 1px solid var(--color-border);
    padding: 16px 24px;
    text-align: center;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* ============================================================
   Responsive
   ============================================================ */

/* Tablet: 2 colunas — sidebar esquerda + conteúdo; sidebar direita vai abaixo */
@media (max-width: 1024px) {
    .layout {
        grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
    }
    .sidebar-right {
        grid-column: 1 / -1;
        position: static;
        height: auto;
        border-left: none;
        border-top: 1px solid var(--color-border);
        flex-direction: row;
        flex-wrap: wrap;
        padding: 16px 20px;
        gap: 20px;
    }
    .sidebar-right .knowledge-card,
    .sidebar-right .nuato-promo-card {
        flex: 1 1 280px;
    }
    .ad-placeholder {
        flex: 1 1 100%;
        min-height: 90px;
    }
}

/* Mobile: 1 coluna — tudo empilhado */
@media (max-width: 768px) {
    /* Evita scroll horizontal em toda a página */
    body,
    .layout {
        overflow-x: hidden;
        max-width: 100vw;
    }

    /* Topbar: z-index elevado */
    .topbar {
        z-index: 1000;
    }

    /* Layout: coluna única */
    .layout {
        grid-template-columns: 1fr;
        width: 100%;
    }

    /* Sidebar esquerda — barra de navegação horizontal compacta */
    .sidebar {
        position: static;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--color-border);
        flex-direction: column;
        padding: 10px 12px;
        gap: 0;
        width: 100%;
        box-sizing: border-box;
    }

    /* Oculta o label "Ferramentas" no mobile */
    .sidebar-label {
        display: none;
    }

    /* Lista de links: flex horizontal, centralizado, com quebra */
    .nav-list {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 6px;
        width: 100%;
    }

    /* Links menores e mais compactos para toque */
    .nav-link {
        padding: 6px 10px;
        font-size: 0.78rem;
        gap: 5px;
        min-height: 36px;
        justify-content: center;
    }

    .nav-link svg {
        width: 14px;
        height: 14px;
        flex-shrink: 0;
    }

    /* Conteúdo principal */
    .content {
        padding: 20px 16px;
        width: 100%;
        min-width: 0;
        box-sizing: border-box;
    }

    /* Card com padding reduzido */
    .card {
        padding: 20px 16px;
    }

    /* Anúncios dentro das views — banner mobile padrão */
    .content .ad-placeholder {
        width: 100%;
        min-height: 90px;
        max-height: 90px;
        margin: 12px 0;
        box-sizing: border-box;
    }

    /* Sidebar direita — coluna empilhada, largura total, sem overflow */
    .sidebar-right {
        grid-column: 1 / -1;
        position: static;
        height: auto;
        display: flex;
        flex-direction: column;
        border-left: none;
        border-top: 1px solid var(--color-border);
        padding: 16px;
        gap: 16px;
        width: 100%;
        max-width: 100%;
        min-width: 0;
        box-sizing: border-box;
        overflow-x: hidden;
    }

    /* Reseta flex herdado do breakpoint 1024px (flex: 1 1 280px vira min-width/height indevido) */
    .sidebar-right .knowledge-card,
    .sidebar-right .nuato-promo-card {
        flex: none;
        width: 100%;
        max-width: 100%;
        min-width: 0;
        height: auto;
        margin-top: 0;
        box-sizing: border-box;
    }

    /* Reordenação mobile: pílulas → NuAto → anúncio (último antes do rodapé) */
    .sidebar-right .knowledge-card    { order: 1; }
    .sidebar-right .nuato-promo-card  { order: 2; }
    .sidebar-right .ad-placeholder {
        order: 3;
        width: 100%;
        min-height: 90px;
        max-height: 90px;
        margin: 0;
        box-sizing: border-box;
    }
}