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

:root {
    --primary: #38bdf8;
    --primary-hover: #7dd3fc;
    --bg: #0F172A;
    --bg-card: #1e293b;
    --bg-input: #0f172a;
    --text: #f8fafc;
    --text-body: #94a3b8;
    --text-muted: #64748b;
    --border: rgba(255,255,255,0.06);
    --border-focus: rgba(56,189,248,0.5);
    --radius: 12px;
    --max-width: 640px;
    --green: #22c55e;
    --red: #ef4444;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-body);
    background: var(--bg);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
}

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

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    flex: 1;
}

/* Nav */
nav {
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo { font-size: 17px; font-weight: 700; color: #fff; letter-spacing: -0.3px; }
.logo span { color: var(--primary); }
.nav-back { font-size: 14px; color: var(--text-muted); font-weight: 500; transition: color 0.15s; }
.nav-back:hover { color: var(--text-body); }

/* Hero */
.hero {
    text-align: center;
    padding: 48px 0 40px;
}

.hero h1 {
    font-size: 36px;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 16px;
    letter-spacing: -0.5px;
    line-height: 1.15;
}

.subheadline {
    font-size: 17px;
    color: var(--text-body);
    line-height: 1.6;
    max-width: 480px;
    margin: 0 auto;
}

/* Trust bar */
.trust { margin-bottom: 40px; }
.trust-items {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    text-align: center;
}
.trust-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 12px;
}
.trust-item strong {
    display: block;
    font-size: 14px;
    color: var(--text);
    margin-bottom: 4px;
}
.trust-item span {
    font-size: 12px;
    color: var(--text-muted);
}

/* Form */
.tool-form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px 28px;
    margin-bottom: 48px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 600;
    font-size: 14px;
    color: var(--text);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 15px;
    font-family: inherit;
    color: var(--text);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}

.form-group select option {
    background: var(--bg-card);
    color: var(--text);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.1);
}

textarea { resize: vertical; }

.btn-primary {
    display: block;
    width: 100%;
    padding: 14px;
    background: var(--primary);
    color: #0f172a;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 8px;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(56, 189, 248, 0.35);
    filter: brightness(1.1);
}

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

.btn-secondary {
    padding: 10px 20px;
    background: var(--bg-card);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 15px;
    cursor: pointer;
    transition: border-color 0.2s;
}

.btn-secondary:hover { border-color: var(--border-focus); }

.btn-link {
    color: var(--primary);
    text-decoration: none;
    font-size: 15px;
}

.btn-link:hover { text-decoration: underline; }

.secure-note {
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 12px;
}

/* How it works */
.how-it-works {
    margin-bottom: 48px;
}

.how-it-works h2 {
    text-align: center;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 20px;
}

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

.step {
    text-align: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 16px;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: rgba(56, 189, 248, 0.1);
    color: var(--primary);
    border-radius: 8px;
    font-weight: 700;
    font-size: 14px;
    margin-bottom: 10px;
}

.step p {
    font-size: 14px;
    color: var(--text-body);
}

/* Example output */
.example-section {
    margin-bottom: 48px;
    border-top: 1px solid var(--border);
    padding-top: 48px;
}
.example-section h2 {
    text-align: center;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 12px;
}
.example-intro {
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 16px;
}
.example-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    white-space: pre-wrap;
    font-size: 13px;
    line-height: 1.6;
    max-height: 300px;
    overflow-y: auto;
    color: var(--text-body);
}

/* Comparison */
.comparison {
    margin-bottom: 48px;
    border-top: 1px solid var(--border);
    padding-top: 48px;
}
.comparison h2 {
    text-align: center;
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 24px;
}
.compare-table { display: flex; gap: 16px; }
.compare-col {
    flex: 1;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
}
.compare-col h3 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 12px;
}
.compare-col ul { list-style: none; padding: 0; }
.compare-col li {
    font-size: 14px;
    color: var(--text-body);
    padding: 6px 0;
    padding-left: 24px;
    position: relative;
}
.compare-them li::before { content: "\2717"; position: absolute; left: 0; color: var(--red); }
.compare-us li::before { content: "\2713"; position: absolute; left: 0; color: var(--green); font-weight: 700; }
.compare-us { border-color: rgba(56, 189, 248, 0.3); }

/* FAQ */
.faq {
    margin-bottom: 48px;
    border-top: 1px solid var(--border);
    padding-top: 48px;
}

.faq h2 {
    text-align: center;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 20px;
}

details {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 20px;
    margin-bottom: 8px;
    transition: border-color 0.2s;
}

details:hover { border-color: rgba(255,255,255,0.12); }
details[open] { border-color: rgba(56, 189, 248, 0.2); }

summary {
    font-weight: 600;
    cursor: pointer;
    font-size: 15px;
    color: var(--text);
}

details p {
    margin-top: 12px;
    color: var(--text-body);
    font-size: 14px;
    line-height: 1.6;
}

/* Related tools (pSEO) */
.related-tools {
    margin-bottom: 48px;
    border-top: 1px solid var(--border);
    padding-top: 48px;
}
.related-tools h2 {
    text-align: center;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 16px;
}
.related-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}
.related-link {
    display: inline-block;
    padding: 8px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 13px;
    color: var(--text-muted);
    transition: border-color 0.2s, color 0.2s;
}
.related-link:hover { border-color: rgba(56, 189, 248, 0.3); color: var(--primary); }

/* Result page */
.result-section {
    text-align: center;
    padding-top: 48px;
}

.result-section h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 24px;
}

.result-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    text-align: left;
    white-space: pre-wrap;
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-body);
    margin-bottom: 24px;
    max-height: 60vh;
    overflow-y: auto;
}

.result-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    align-items: center;
}

.download-section {
    text-align: center;
    margin-bottom: 32px;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    padding: 14px 36px;
    text-decoration: none;
}

.download-hint {
    margin-top: 12px;
    font-size: 13px;
    color: var(--text-muted);
}

.result-preview { margin-bottom: 24px; }
.result-preview summary {
    cursor: pointer;
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 8px;
}
.result-preview summary:hover { color: var(--primary); }

/* Loading */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 24px auto;
}

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

/* Consent */
.consent-label {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 16px;
    line-height: 1.5;
    cursor: pointer;
}
.consent-label input[type="checkbox"] {
    margin-top: 2px;
    flex-shrink: 0;
    width: auto;
    accent-color: var(--primary);
}
.consent-label a { color: var(--primary); }

/* Legal pages */
.legal-page { padding-top: 32px; }
.legal-page h1 { font-size: 28px; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.legal-page h2 { font-size: 18px; font-weight: 600; color: var(--text); margin-top: 32px; margin-bottom: 12px; }
.legal-page p, .legal-page li { font-size: 14px; color: var(--text-body); line-height: 1.7; }
.legal-page ul { padding-left: 24px; margin-bottom: 16px; }
.legal-page a { color: var(--primary); }
.legal-updated { color: var(--text-muted); font-size: 13px; margin-bottom: 24px; }
.legal-table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    font-size: 13px;
}
.legal-table th, .legal-table td {
    border: 1px solid var(--border);
    padding: 8px 12px;
    text-align: left;
    color: var(--text-body);
}
.legal-table th {
    background: var(--bg-card);
    font-weight: 600;
    color: var(--text);
}
.back-link { margin-top: 48px; }

/* Footer */
footer {
    text-align: center;
    padding: 24px;
    font-size: 13px;
    color: #334155;
    border-top: 1px solid var(--border);
    margin-top: 16px;
}
.footer-links { margin-top: 8px; }
.footer-links a { color: #475569; text-decoration: none; transition: color 0.15s; }
.footer-links a:hover { color: var(--text-muted); }

/* Responsive */
@media (max-width: 480px) {
    .hero h1 { font-size: 26px; }
    .steps { grid-template-columns: 1fr; }
    .trust-items { grid-template-columns: repeat(2, 1fr); }
    .tool-form { padding: 20px 16px; }
    .compare-table { flex-direction: column; }
}