/* Ferramentas Gratuitas - WCL Informática */
:root {
    --bg-dark: #040814;
    --bg-card: #0a0f26;
    --bg-card-hover: #101736;
    --color-primary: #00d2ff;
    --color-secondary: #8a2be2;
    --color-pink: #ff007f;
    --text-white: #ffffff;
    --text-muted: #8fa0dd;
    --text-gray: #a0aec0;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(0, 210, 255, 0.2);
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --shadow-neon-blue: 0 0 15px rgba(0, 210, 255, 0.4);
    --border-radius-md: 16px;
    --border-radius-sm: 8px;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── TOOLS PAGE LAYOUT ─────────────────────────────────── */
.tools-page {
    min-height: 100vh;
    background: var(--bg-dark);
    color: var(--text-white);
    font-family: var(--font-body);
    font-size: 13px;
    line-height: 1.4;
}

.tools-header {
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-dark);
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 16px;
    max-width: 100%;
    width: 100%;
    box-sizing: border-box;
}

.tools-header .logo-link {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-white);
    text-decoration: none;
}

.tools-header .logo-link img {
    height: 24px;
    filter: drop-shadow(0 0 5px rgba(0, 210, 255, 0.8));
}

.tools-header .logo-link .logo-text {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 800;
}

.tools-header .logo-link .logo-text span {
    color: var(--color-primary);
    font-size: 8px;
    display: block;
    letter-spacing: 1px;
}

.tools-header .back-link {
    color: var(--text-gray);
    text-decoration: none;
    font-size: 11px;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    transition: var(--transition-smooth);
}

.tools-header .back-link:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* ── TOOLS HERO ────────────────────────────────────────── */
.tools-hero {
    text-align: center;
    padding: 16px 16px 8px;
    max-width: 100%;
    margin: 0 auto;
}

.tools-hero h1 {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 800;
    margin-bottom: 4px;
}

.tools-hero h1 span {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tools-hero p {
    color: var(--text-gray);
    font-size: 13px;
    max-width: 600px;
    margin: 0 auto;
}

/* ── CATEGORY TABS ─────────────────────────────────────── */
.cat-tabs-wrapper {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px 20px;
}
.cat-tabs {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    scroll-behavior: smooth;
}
.cat-tabs::-webkit-scrollbar { display: none; }
.cat-scroll-btn {
    position: absolute;
    top: 0;
    bottom: 20px;
    width: 36px;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    font-size: 14px;
    transition: opacity 0.3s, visibility 0.3s;
    background: linear-gradient(90deg, var(--bg-dark) 40%, transparent);
    color: var(--color-primary);
    opacity: 0;
    visibility: hidden;
}
.cat-scroll-btn:hover { color: #fff; }
.cat-scroll-left {
    left: 0;
    padding-right: 20px;
    background: linear-gradient(90deg, var(--bg-dark) 40%, transparent);
}
.cat-scroll-right {
    right: 0;
    padding-left: 20px;
    background: linear-gradient(270deg, var(--bg-dark) 40%, transparent);
}
.cat-scroll-btn.visible {
    opacity: 1;
    visibility: visible;
}
.cat-tab {
    flex-shrink: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 10px 18px;
    color: var(--text-gray);
    font-family: var(--font-heading);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 8px;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}
.cat-tab i { font-size: 14px; }
.cat-tab:hover {
    border-color: rgba(0,210,255,0.4);
    color: var(--color-primary);
    background: rgba(0,210,255,0.04);
    transform: translateY(-1px);
}
.cat-tab:active {
    transform: translateY(0);
    background: rgba(0,210,255,0.08);
}
.cat-tab.active {
    background: linear-gradient(135deg, rgba(0,210,255,0.15), rgba(138,43,226,0.15));
    border-color: var(--color-primary);
    color: var(--color-primary);
    box-shadow: 0 0 12px rgba(0,210,255,0.12);
}
.cat-tab.active:hover {
    background: linear-gradient(135deg, rgba(0,210,255,0.2), rgba(138,43,226,0.2));
    transform: translateY(-1px);
}
.cat-tab .cat-count {
    background: rgba(255,255,255,0.06);
    border-radius: 6px;
    padding: 1px 7px;
    font-size: 11px;
    color: var(--text-muted);
}
.cat-tab.active .cat-count {
    background: rgba(0,210,255,0.12);
    color: var(--color-primary);
}

/* ── SEARCH BAR ────────────────────────────────────────── */
.tools-search {
    max-width: 1200px;
    margin: 0 auto 24px;
    padding: 0 24px;
    position: relative;
}
.tools-search input {
    width: 100%;
    padding: 12px 16px 12px 44px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-white);
    font-size: 14px;
    font-family: var(--font-body);
    outline: none;
    transition: var(--transition-smooth);
    box-sizing: border-box;
}
.tools-search input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 15px rgba(0,210,255,0.08);
}
.tools-search input::placeholder { color: var(--text-muted); }
.tools-search i {
    position: absolute;
    left: 36px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 16px;
}

/* ── CATEGORY SECTION ──────────────────────────────────── */
.cat-section {
    display: none;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px 60px;
}
.cat-section.active { display: block; }
.cat-section-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}
.cat-section-header .cat-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    background: rgba(0,210,255,0.08);
    color: var(--color-primary);
    flex-shrink: 0;
}
.cat-section-header h2 {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
}
.cat-section-header h2 span { color: var(--color-primary); }
.cat-section-header .cat-count-badge {
    margin-left: auto;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 4px 12px;
    font-size: 12px;
    color: var(--text-gray);
}

/* ── TOOLS GRID ────────────────────────────────────────── */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.tool-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 20px 18px;
    cursor: pointer;
    transition: var(--transition-smooth);
    text-decoration: none;
    color: var(--text-white);
    display: flex;
    flex-direction: column;
    gap: 10px;
    position: relative;
}

.tool-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(0, 210, 255, 0.3);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.4), 0 0 20px rgba(0,210,255,0.08);
}
.tool-card:active {
    transform: translateY(-1px);
    border-color: rgba(0, 210, 255, 0.5);
}

.tool-card .tool-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    background: rgba(0, 210, 255, 0.08);
    color: var(--color-primary);
    transition: var(--transition-smooth);
    flex-shrink: 0;
}

.tool-card:hover .tool-icon {
    background: rgba(0, 210, 255, 0.15);
    box-shadow: 0 0 20px rgba(0, 210, 255, 0.1);
}

.tool-card .tool-name {
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 700;
}

.tool-card .tool-desc {
    color: var(--text-gray);
    font-size: 12px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.tool-card .tool-cat-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 2px 8px;
    border-radius: 5px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
    color: var(--text-muted);
}

.tool-card .tool-card-footer {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: auto;
    font-size: 11px;
    color: var(--color-primary);
    font-weight: 600;
    opacity: 0;
    transition: var(--transition-smooth);
}
.tool-card:hover .tool-card-footer { opacity: 1; }

/* ── NO RESULTS ────────────────────────────────────────── */
.tools-no-results {
    display: none;
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: var(--text-gray);
}
.tools-no-results.show { display: block; }
.tools-no-results i { font-size: 40px; color: var(--text-muted); margin-bottom: 12px; }

/* ── TOOL VIEW (single tool UI) ────────────────────────── */
.tool-view {
    display: none;
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 24px 80px;
}

.tool-view.active {
    display: block;
}

.tool-view-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 30px;
}

.tool-view-header .tool-back {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-gray);
    width: 38px;
    height: 38px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    flex-shrink: 0;
}

.tool-view-header .tool-back:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.tool-view-header h2 {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
}

.tool-view-header h2 span {
    color: var(--color-primary);
}

/* ── TOOL CARD CONTAINER INSIDE TOOL VIEW ─────────────── */
.tool-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 32px;
    margin-bottom: 20px;
}

.tool-box h3 {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
}

/* ── SPEED TEST ────────────────────────────────────────── */
.speed-test-display {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.speed-test-item {
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
}

.speed-test-item .speed-value {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 800;
    color: var(--color-primary);
}

.speed-test-item .speed-value.ping {
    color: var(--color-secondary);
}

.speed-test-item .speed-label {
    font-size: 12px;
    color: var(--text-gray);
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.speed-test-item .speed-label .ping-server {
    display: block;
    font-size: 10px;
    color: var(--text-muted);
    text-transform: none;
    letter-spacing: 0;
    margin-top: 2px;
}

.speed-progress-bar {
    height: 6px;
    background: rgba(255,255,255,0.05);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 20px;
}

.speed-progress-bar .speed-progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border-radius: 3px;
    transition: width 0.3s;
}

.speed-status {
    text-align: center;
    font-size: 14px;
    color: var(--text-gray);
    margin-bottom: 20px;
    min-height: 20px;
}

.btn-speed-test {
    display: block;
    margin: 0 auto;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--text-white);
    border: none;
    padding: 14px 40px;
    border-radius: 12px;
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-speed-test:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-neon-blue);
}

.btn-speed-test:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* ── TOOL DISCLAIMER ────────────────────────────────────── */
.tool-disclaimer {
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
    margin-top: 16px;
    line-height: 1.5;
}
.tool-disclaimer a {
    color: var(--color-primary);
    text-decoration: none;
}
.tool-disclaimer a:hover {
    text-decoration: underline;
}

/* ── PASSWORD GENERATOR ────────────────────────────────── */
.pw-display {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px 20px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.pw-display .pw-text {
    font-family: 'Courier New', monospace;
    font-size: 22px;
    color: var(--color-primary);
    word-break: break-all;
    flex: 1;
}

.pw-display .pw-copy {
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-color);
    color: var(--text-gray);
    width: 40px;
    height: 40px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    flex-shrink: 0;
}

.pw-display .pw-copy:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.pw-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

.pw-option {
    display: flex;
    align-items: center;
    gap: 10px;
}

.pw-option label {
    font-size: 14px;
    color: var(--text-gray);
    cursor: pointer;
}

.pw-option input[type="checkbox"] {
    accent-color: var(--color-primary);
    width: 16px;
    height: 16px;
}

.pw-option input[type="range"] {
    flex: 1;
    accent-color: var(--color-primary);
    max-width: 120px;
}

.pw-option .pw-length-value {
    font-size: 14px;
    color: var(--color-primary);
    font-weight: 700;
    min-width: 24px;
    text-align: right;
}

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

.pw-strength-bar {
    height: 4px;
    flex: 1;
    background: rgba(255,255,255,0.05);
    border-radius: 2px;
    overflow: hidden;
}

.pw-strength-bar .pw-strength-fill {
    height: 100%;
    border-radius: 2px;
    transition: width 0.3s, background 0.3s;
}

.pw-strength-label {
    font-size: 12px;
    font-weight: 600;
    min-width: 60px;
    text-align: right;
}

.btn-generate-pw {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--text-white);
    border: none;
    padding: 12px 32px;
    border-radius: 12px;
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-generate-pw:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-neon-blue);
}

/* ── IP CHECKER ────────────────────────────────────────── */
.ip-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.ip-info-item {
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 14px 18px;
}

.ip-info-item .ip-label {
    font-size: 11px;
    color: var(--text-gray);
    text-transform: uppercase;
    letter-spacing: 1px;
    display: block;
    margin-bottom: 4px;
}

.ip-info-item .ip-value {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-primary);
    word-break: break-all;
}

.ip-status {
    text-align: center;
    padding: 20px;
    color: var(--text-gray);
}

.ip-status i {
    font-size: 32px;
    margin-bottom: 10px;
    display: block;
    color: var(--color-secondary);
}

.ip-status.loading i {
    animation: spin 1s linear infinite;
}

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

.ip-refresh {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-gray);
    padding: 8px 18px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 13px;
    transition: var(--transition-smooth);
    margin-top: 16px;
}

.ip-refresh:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* ── IMAGE CONVERTER ───────────────────────────────────── */
.img-converter-upload {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-smooth);
    margin-bottom: 20px;
}

.img-converter-upload:hover {
    border-color: var(--color-primary);
    background: rgba(0,210,255,0.03);
}

.img-converter-upload i {
    font-size: 40px;
    color: var(--color-primary);
    margin-bottom: 12px;
    display: block;
}

.img-converter-upload p {
    color: var(--text-gray);
    font-size: 14px;
}

.img-converter-upload .upload-hint {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 6px;
}

.img-converter-preview {
    display: none;
    margin-bottom: 20px;
}

.img-converter-preview.show {
    display: block;
}

.img-converter-preview img {
    max-width: 100%;
    max-height: 300px;
    border-radius: 10px;
    display: block;
    margin: 0 auto 16px;
}

.img-converter-formats {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.img-converter-formats button {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border-color);
    color: var(--text-gray);
    padding: 10px 20px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition-smooth);
}

.img-converter-formats button:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.img-converter-formats button.active {
    border-color: var(--color-primary);
    background: rgba(0,210,255,0.1);
    color: var(--color-primary);
}

.btn-convert-img {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--text-white);
    border: none;
    padding: 12px 32px;
    border-radius: 12px;
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: block;
    margin: 0 auto;
}

.btn-convert-img:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-neon-blue);
}

.btn-convert-img:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* ── BATTERY HEALTH ────────────────────────────────────── */
.battery-form {
    display: grid;
    gap: 16px;
    max-width: 400px;
    margin-bottom: 24px;
}

.battery-form .battery-field label {
    display: block;
    font-size: 13px;
    color: var(--text-gray);
    margin-bottom: 6px;
}

.battery-form .battery-field input {
    width: 100%;
    padding: 10px 14px;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-white);
    font-size: 15px;
    outline: none;
    transition: var(--transition-smooth);
    font-family: var(--font-body);
}

.battery-form .battery-field input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 10px rgba(0,210,255,0.1);
}

.battery-result {
    display: none;
    text-align: center;
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: rgba(255,255,255,0.02);
    margin-bottom: 20px;
}

.battery-result.show {
    display: block;
}

.battery-result .battery-pct {
    font-family: var(--font-heading);
    font-size: 48px;
    font-weight: 800;
    color: var(--color-primary);
}

.battery-result .battery-status-text {
    font-size: 14px;
    color: var(--text-gray);
    margin-top: 6px;
}

.btn-battery-calc {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--text-white);
    border: none;
    padding: 12px 32px;
    border-radius: 12px;
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-battery-calc:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-neon-blue);
}

.battery-guide {
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px 24px;
}

.battery-guide h4 {
    font-family: var(--font-heading);
    color: var(--color-primary);
    margin-bottom: 8px;
}

.battery-guide p, .battery-guide li {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.7;
}

.battery-guide ul {
    padding-left: 20px;
    margin: 8px 0;
}

/* ── PC POWER CALCULATOR ──────────────────────────────── */
.pc-calc-form {
    display: grid;
    gap: 14px;
    margin-bottom: 24px;
}

.pc-calc-form .pc-field label {
    display: block;
    font-size: 13px;
    color: var(--text-gray);
    margin-bottom: 6px;
}

.pc-calc-form .pc-field select,
.pc-calc-form .pc-field input {
    width: 100%;
    padding: 10px 14px;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-white);
    font-size: 14px;
    outline: none;
    transition: var(--transition-smooth);
    font-family: var(--font-body);
}

.pc-calc-form .pc-field select option {
    background: var(--bg-dark);
    color: var(--text-white);
}

.pc-calc-form .pc-field select:focus,
.pc-calc-form .pc-field input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 10px rgba(0,210,255,0.1);
}

.pc-result {
    display: none;
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
}

.pc-result.show {
    display: block;
}

.pc-result-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.pc-result-item {
    text-align: center;
    padding: 14px;
    background: rgba(255,255,255,0.02);
    border-radius: 10px;
}

.pc-result-item .pc-result-value {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 800;
    color: var(--color-primary);
}

.pc-result-item .pc-result-label {
    font-size: 11px;
    color: var(--text-gray);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 4px;
}

.btn-pc-calc {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--text-white);
    border: none;
    padding: 12px 32px;
    border-radius: 12px;
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: block;
    margin: 0 auto;
}

.btn-pc-calc:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-neon-blue);
}

/* ── HIDE INFO CONTENT ON TOOL VIEW ───────────────────── */
.tool-content, .faq-section { display: none; }

/* ── TOOL HIGHLIGHT (listing page content) ─────────────── */
.tool-highlight {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 18px 22px;
    margin-bottom: 14px;
    transition: var(--transition-smooth);
}
.tool-highlight:hover {
    border-color: rgba(0,210,255,0.2);
}
.tool-highlight h3 {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 6px;
}
.tool-highlight p {
    color: var(--text-gray);
    font-size: 13px;
    line-height: 1.7;
}

/* ── SEO CONTENT SECTIONS ──────────────────────────────── */
.seo-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px 60px;
}
.seo-content h2 {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 700;
    color: var(--color-primary);
    margin: 36px 0 12px;
}
.seo-content h3 {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 600;
    color: var(--text-white);
    margin: 28px 0 10px;
}
.seo-content p {
    color: var(--text-gray);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 14px;
}
.seo-content ul, .seo-content ol {
    color: var(--text-gray);
    font-size: 14px;
    line-height: 1.8;
    padding-left: 20px;
    margin-bottom: 14px;
}
.seo-content li { margin-bottom: 6px; }
.seo-content strong { color: var(--text-white); }
.seo-content a {
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition-smooth);
}
.seo-content a:hover { text-decoration: underline; }
.seo-content .example-box {
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px 24px;
    margin: 16px 0;
}
.seo-content .example-box p { margin-bottom: 6px; }
.seo-content .example-box code {
    display: block;
    background: rgba(0,0,0,0.3);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 10px 14px;
    margin: 8px 0;
    color: var(--color-primary);
    font-family: 'Courier New', monospace;
    font-size: 13px;
    word-break: break-all;
}

/* ── FAQ SECTION ───────────────────────────────────────── */
.faq-section.seo-faq {
    display: block !important;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px 60px;
}
.faq-section.seo-faq h2 {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 700;
    color: var(--color-primary);
    margin: 36px 0 20px;
}
.faq-section.seo-faq .faq-item {
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 18px 22px;
    margin-bottom: 12px;
    cursor: pointer;
    transition: var(--transition-smooth);
}
.faq-section.seo-faq .faq-item:hover {
    border-color: rgba(0,210,255,0.2);
}
.faq-section.seo-faq .faq-item h4 {
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 600;
    color: var(--text-white);
    margin: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.faq-section.seo-faq .faq-item h4:after {
    content: '\f107';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: var(--text-gray);
    font-size: 14px;
    transition: var(--transition-smooth);
}
.faq-section.seo-faq .faq-item.active h4:after {
    transform: rotate(180deg);
}
.faq-section.seo-faq .faq-item p {
    display: none;
    color: var(--text-gray);
    font-size: 14px;
    line-height: 1.8;
    margin: 12px 0 0;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}
.faq-section.seo-faq .faq-item.active p { display: block; }

/* ── RELATED TOOLS ─────────────────────────────────────── */
.related-tools {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px 60px;
}
.related-tools h2 {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 700;
    color: var(--color-primary);
    margin: 36px 0 20px;
}
.related-tools-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}
.related-tools-grid a {
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 14px 18px;
    color: var(--text-gray);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 8px;
}
.related-tools-grid a:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: rgba(0,210,255,0.04);
    transform: translateY(-2px);
}
.related-tools-grid a i { color: var(--color-primary); font-size: 14px; }
@media(max-width:600px) {
    .related-tools-grid { grid-template-columns: 1fr; }
    .seo-content { padding: 0 16px 40px; }
    .faq-section.seo-faq { padding: 0 16px 40px; }
    .related-tools { padding: 0 16px 40px; }
}

/* ── RESPONSIVE ────────────────────────────────────────── */
@media (max-width: 1000px) {
    .tools-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
    .tools-hero h1 { font-size: 18px; }
    .tools-hero p { font-size: 12px; }
    .cat-tabs { padding: 0 16px 16px; gap: 6px; }
    .cat-tab { padding: 8px 14px; font-size: 12px; }
    .cat-section { padding: 0 16px 40px; }
}

@media (max-width: 750px) {
    .tools-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
    .tools-grid { grid-template-columns: 1fr; }
    .tools-hero { padding: 10px 10px 4px; }
    .tools-hero h1 { font-size: 16px; }
    .tools-search { padding: 0 16px; margin-bottom: 16px; }
    .cat-tabs { padding: 0 10px 12px; gap: 5px; }
    .cat-tab { padding: 6px 10px; font-size: 11px; }
    .cat-tab .cat-count { display: none; }
    .speed-test-display { grid-template-columns: 1fr; }
    .pw-options { grid-template-columns: 1fr; }
    .ip-info { grid-template-columns: 1fr; }
    .pc-result-grid { grid-template-columns: 1fr; }
    .tools-header { padding: 6px 10px; }
    .tools-header .logo-text { font-size: 13px; }
    .tool-box { padding: 12px; }
    .tool-view-header h2 { font-size: 16px; }
    .tools-header .logo-link img { height: 20px; }
    .tools-header .back-link { font-size: 10px; padding: 3px 8px; }
    .cat-section-header { flex-wrap: wrap; }
    .cat-section-header h2 { font-size: 16px; }
    .cat-section-header .cat-count-badge { margin-left: 0; }
}

@media (max-width: 400px) {
    .tools-hero h1 { font-size: 14px; }
    .tool-card { padding: 14px 12px; }
    .tool-card .tool-icon { width: 40px; height: 40px; font-size: 18px; }
    .tool-card .tool-name { font-size: 14px; }
}

/*
 * Performance Optimizations
 * - content-visibility: auto defers rendering of below-fold content
 * - contain: layout style reduces reflow calculations
 * - will-change hints for animated elements
 */
.seo-content { content-visibility: auto; contain-intrinsic-size: auto 200px; }
.faq-section.seo-faq { content-visibility: auto; contain-intrinsic-size: auto 300px; }
.related-tools { content-visibility: auto; contain-intrinsic-size: auto 180px; }
.tool-content > h2:not(:first-of-type) + p { content-visibility: auto; contain: layout style; }

img[loading="lazy"] { background: transparent; }

.tool-card { contain: layout style; }
.tool-card .tool-icon { will-change: transform; }