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

:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-accent: #e87c2e;
    --color-accent-dark: #d06a20;
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-bg-highlight: #fff7ed;
    --color-bg-warm: #fef6ee;
    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-border: #e2e8f0;
    --color-success: #16a34a;
    --color-warning: #f59e0b;
    --color-danger: #dc2626;
    --max-width: 1100px;
    --radius: 8px;
    --radius-lg: 12px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--color-text);
    line-height: 1.6;
    background: var(--color-bg);
}

a { color: var(--color-primary); }

/* === Navigation === */
header { border-bottom: 1px solid var(--color-border); background: var(--color-bg); position: sticky; top: 0; z-index: 100; }
nav { max-width: var(--max-width); margin: 0 auto; padding: 1rem 1.5rem; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; }
.logo { font-size: 1.3rem; font-weight: 700; color: var(--color-primary); text-decoration: none; }
.nav-links { display: flex; gap: 1.5rem; align-items: center; flex-wrap: wrap; }
.nav-links a { color: var(--color-text-light); text-decoration: none; font-size: 0.9rem; transition: color 0.2s; }
.nav-links a:hover { color: var(--color-primary); }

/* Hamburger (checkbox, no JS) */
.nav-toggle { display: none; }
.nav-toggle-btn { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
.nav-toggle-btn span { display: block; width: 24px; height: 2px; background: var(--color-text); border-radius: 1px; transition: 0.3s; }

/* === Buttons === */
.btn { display: inline-block; padding: 0.6rem 1.5rem; border-radius: var(--radius); text-decoration: none; font-weight: 600; font-size: 0.9rem; border: none; cursor: pointer; transition: background 0.2s, transform 0.1s; text-align: center; }
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--color-primary); color: white; }
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-accent { background: var(--color-accent); color: white; }
.btn-accent:hover { background: var(--color-accent-dark); }
.btn-large { padding: 1rem 2.5rem; font-size: 1.15rem; border-radius: var(--radius-lg); }
.btn-secondary { background: var(--color-bg-alt); color: var(--color-text); border: 1px solid var(--color-border); }
.btn-secondary:hover { background: var(--color-border); }

/* === Sections === */
main { min-height: 60vh; }
.section { max-width: var(--max-width); margin: 0 auto; padding: 5rem 1.5rem; }
.section h2 { font-size: 2rem; margin-bottom: 1rem; }
.section > p { margin-bottom: 1.5rem; color: var(--color-text-light); max-width: 700px; font-size: 1.05rem; line-height: 1.7; }
.section-alt { background: var(--color-bg-alt); }
.section-alt.section { max-width: none; }
.section-alt > h2, .section-alt > p, .section-alt > .card-grid,
.section-alt > .testimonial-grid, .section-alt > .results-grid,
.section-alt > .faq-list { max-width: var(--max-width); margin-left: auto; margin-right: auto; }
.section-highlight { background: var(--color-bg-highlight); }
.section-highlight.section { max-width: none; }
.section-highlight > * { max-width: var(--max-width); margin-left: auto; margin-right: auto; }
.section-cta { background: var(--color-bg-warm); text-align: center; max-width: none; padding: 4rem 1.5rem; }
.section-cta h2 { max-width: 600px; margin-left: auto; margin-right: auto; }
.section-cta p { max-width: 600px; margin-left: auto; margin-right: auto; font-size: 1.05rem; color: var(--color-text-light); }
.section-cta .btn { margin-top: 1.5rem; }

/* === Hero === */
.hero { padding: 5rem 1.5rem 4rem; background: linear-gradient(135deg, var(--color-bg-highlight) 0%, var(--color-bg) 60%); }
.hero-inner { max-width: var(--max-width); margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.hero-text h1 { font-size: 2.8rem; line-height: 1.15; margin-bottom: 1.25rem; color: var(--color-text); }
.hero-text p { font-size: 1.15rem; color: var(--color-text-light); margin-bottom: 2rem; line-height: 1.7; max-width: 520px; }
.hero-image { text-align: center; }
.hero-image img { width: 320px; height: 320px; object-fit: cover; object-position: top center; border-radius: 50%; border: 4px solid white; box-shadow: 0 8px 30px rgba(0,0,0,0.12); }

/* === Problem section === */
.problem-list { list-style: none; max-width: 600px; margin-top: 1.5rem; }
.problem-list li { padding: 0.75rem 0 0.75rem 2rem; position: relative; font-size: 1.05rem; color: var(--color-text); border-bottom: 1px solid var(--color-border); }
.problem-list li:last-child { border-bottom: none; }
.problem-list li::before { content: "\2715"; position: absolute; left: 0; color: var(--color-danger); font-weight: 700; font-size: 1.1rem; }

/* === Skill cards === */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.5rem; margin-top: 2rem; }
.card { background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 1.75rem; transition: box-shadow 0.2s; }
.card:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.06); }
.card h3 { margin-bottom: 0.5rem; font-size: 1.1rem; }
.card p { font-size: 0.9rem; color: var(--color-text-light); line-height: 1.6; }

.skill-card { text-align: center; padding: 2rem 1.5rem; }
.skill-label { display: inline-block; background: var(--color-primary); color: white; padding: 0.3rem 0.75rem; border-radius: 2rem; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.05em; margin-bottom: 0.75rem; }
.skill-card h3 { font-size: 1.05rem; }

/* === Service cards (with images) === */
.service-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.5rem; margin-top: 2rem; }
.service-card { background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; transition: box-shadow 0.2s; display: flex; flex-direction: column; }
.service-card:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.06); }
.service-card img { width: 100%; height: 180px; object-fit: cover; }
.service-card h3 { font-size: 1.05rem; padding: 1.5rem 1.5rem 0.5rem; }
.service-card p { font-size: 0.9rem; color: var(--color-text-light); padding: 0 1.5rem 1.5rem; line-height: 1.6; flex: 1; }
.service-card-highlight { border: 2px solid var(--color-accent); position: relative; }
.service-badge { position: absolute; top: 1rem; right: 1rem; background: var(--color-accent); color: white; padding: 0.25rem 0.75rem; border-radius: 2rem; font-size: 0.75rem; font-weight: 700; }
.service-price { display: block; padding: 0 1.5rem 1.5rem; font-weight: 700; color: var(--color-accent); font-size: 1.05rem; }

/* === Testimonials === */
.testimonial-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; margin-top: 2rem; }
.testimonial-card { background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 2rem; }
.testimonial-card blockquote { font-style: italic; font-size: 1rem; line-height: 1.7; color: var(--color-text); margin-bottom: 1rem; }
.testimonial-card blockquote::before { content: "\201C"; font-size: 2.5rem; color: var(--color-accent); line-height: 0; vertical-align: -0.5rem; margin-right: 0.15rem; }
.testimonial-card cite { display: block; font-style: normal; font-weight: 600; font-size: 0.85rem; color: var(--color-text-light); }

/* === Process steps === */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; margin-top: 2.5rem; }
.step { text-align: center; }
.step-number { display: inline-flex; align-items: center; justify-content: center; width: 3rem; height: 3rem; background: var(--color-accent); color: white; font-size: 1.25rem; font-weight: 700; border-radius: 50%; margin-bottom: 1rem; }
.step h3 { font-size: 1rem; margin-bottom: 0.5rem; }
.step p { font-size: 0.9rem; color: var(--color-text-light); line-height: 1.6; }

/* === Results grid === */
.results-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.5rem; margin-top: 2rem; }
.result-item { padding: 1.5rem; }
.result-item h3 { font-size: 1.05rem; margin-bottom: 0.5rem; color: var(--color-text); }
.result-item h3::before { content: "\2713"; margin-right: 0.5rem; color: var(--color-success); font-weight: 700; }
.result-item p { font-size: 0.9rem; color: var(--color-text-light); line-height: 1.6; }

/* === Price section === */
.price-section { text-align: center; max-width: var(--max-width); margin: 0 auto; }
.price-box { display: inline-block; background: var(--color-bg); border: 2px solid var(--color-accent); border-radius: var(--radius-lg); padding: 2.5rem 3rem; margin: 1.5rem auto; text-align: center; }
.price { display: block; font-size: 2.5rem; font-weight: 700; color: var(--color-accent); margin-bottom: 0.25rem; }
.price-label { display: block; color: var(--color-text-light); margin-bottom: 1.5rem; font-size: 1rem; }
.price-features { list-style: none; text-align: left; margin-bottom: 2rem; }
.price-features li { padding: 0.4rem 0; font-size: 0.95rem; color: var(--color-text); }
.price-features li::before { content: "\2713"; margin-right: 0.5rem; color: var(--color-success); font-weight: 700; }
.price-note { margin-top: 1.5rem; font-size: 0.9rem; color: var(--color-text-light); }

/* === About === */
.about-layout { display: grid; grid-template-columns: auto 1fr; gap: 3rem; align-items: center; }
.about-image img { width: 260px; border-radius: var(--radius-lg); box-shadow: 0 4px 20px rgba(0,0,0,0.1); }
.about-text h2 { font-size: 1.8rem; margin-bottom: 1rem; }
.about-text p { color: var(--color-text-light); margin-bottom: 1rem; font-size: 1rem; line-height: 1.7; }

/* === FAQ === */
.faq-list { max-width: 700px; margin-top: 2rem; }
.faq-item { border-bottom: 1px solid var(--color-border); }
.faq-item summary { padding: 1.25rem 0; font-weight: 600; font-size: 1rem; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 1.5rem; color: var(--color-text-light); transition: transform 0.2s; flex-shrink: 0; margin-left: 1rem; }
.faq-item[open] summary::after { content: "\2212"; }
.faq-item p { padding: 0 0 1.25rem; color: var(--color-text-light); font-size: 0.95rem; line-height: 1.7; }

/* === Footer === */
footer { background: var(--color-text); color: #94a3b8; padding: 3rem 1.5rem 1.5rem; }
.footer-inner { max-width: var(--max-width); margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 2rem; padding-bottom: 2rem; border-bottom: 1px solid #334155; }
.footer-logo { display: block; font-size: 1.2rem; font-weight: 700; color: white; margin-bottom: 0.5rem; }
.footer-inner p { font-size: 0.85rem; margin-bottom: 0.25rem; }
.footer-inner h4 { color: white; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.75rem; }
.footer-links { display: flex; flex-direction: column; gap: 0.4rem; }
.footer-links a { color: #94a3b8; text-decoration: none; font-size: 0.85rem; }
.footer-links a:hover { color: white; }
.footer-bottom { max-width: var(--max-width); margin: 0 auto; padding-top: 1.5rem; text-align: center; }
.footer-bottom p { font-size: 0.8rem; }

/* === Forms === */
.form { max-width: 500px; margin-top: 1.5rem; }
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; margin-bottom: 0.25rem; font-weight: 600; font-size: 0.9rem; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: 0.6rem; border: 1px solid var(--color-border);
    border-radius: var(--radius); font-size: 0.9rem; font-family: inherit;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* === Status indicators === */
.status { padding: 0.3rem 0.8rem; border-radius: 1rem; font-size: 0.8rem; font-weight: 600; display: inline-block; }
.status-pending { background: #fef3c7; color: #92400e; }
.status-processing { background: #dbeafe; color: #1e40af; }
.status-completed { background: #dcfce7; color: #166534; }
.status-failed { background: #fee2e2; color: #991b1b; }

/* Score card */
.score-card { margin: 1.5rem 0; }
.score-card table { width: 100%; border-collapse: collapse; }
.score-card th, .score-card td { padding: 0.75rem 1rem; text-align: left; border-bottom: 1px solid var(--color-border); }
.score-card th { font-weight: 600; background: var(--color-bg-alt); }

/* Report */
.report { margin: 2rem 0; line-height: 1.8; }
.report h1 { font-size: 1.6rem; margin-top: 2rem; margin-bottom: 0.75rem; color: var(--color-text); border-bottom: 2px solid var(--color-primary); padding-bottom: 0.5rem; }
.report h2 { font-size: 1.3rem; margin-top: 2rem; margin-bottom: 0.5rem; color: var(--color-text); }
.report h3 { font-size: 1.1rem; margin-top: 1.5rem; margin-bottom: 0.5rem; color: var(--color-text); }
.report p { margin-bottom: 1rem; color: var(--color-text); max-width: none; }
.report ul, .report ol { margin: 0.5rem 0 1rem 1.5rem; }
.report li { margin-bottom: 0.4rem; }
.report strong { color: var(--color-text); }
.report table { width: 100%; border-collapse: collapse; margin: 1rem 0; }
.report th { padding: 0.6rem 1rem; border: 1px solid var(--color-border); text-align: left; background: var(--color-bg-alt); font-weight: 600; }
.report td { padding: 0.6rem 1rem; border: 1px solid var(--color-border); text-align: left; }
.report blockquote { border-left: 4px solid var(--color-primary); margin: 1rem 0; padding: 0.75rem 1rem; background: var(--color-bg-highlight); border-radius: 0 var(--radius) var(--radius) 0; }
.report blockquote p { margin-bottom: 0; }
.report hr { border: none; border-top: 1px solid var(--color-border); margin: 2rem 0; }

/* Upload area */
.upload-area { border: 2px dashed var(--color-border); border-radius: var(--radius); padding: 2rem; text-align: center; margin: 1rem 0; }
.upload-area:hover { border-color: var(--color-primary); background: var(--color-bg-highlight); }

/* Alerts */
.alert { padding: 1rem 1.5rem; border-radius: var(--radius); margin-bottom: 1rem; }
.alert-success { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.alert-error { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }
.alert-info { background: #dbeafe; color: #1e40af; border: 1px solid #bfdbfe; }

/* Spinner */
.spinner { display: inline-block; width: 1.5rem; height: 1.5rem; border: 3px solid var(--color-border); border-top-color: var(--color-primary); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* === Scan page: instructions === */
.scan-step-header { display: flex; align-items: center; gap: 1rem; margin-bottom: 1rem; }
.scan-step-header .step-number { flex-shrink: 0; }
.scan-step-header h2 { margin-bottom: 0; }

.exercise-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; margin-top: 1.5rem; }
.exercise-card { background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 1.75rem; }
.exercise-card h3 { font-size: 1.15rem; margin-bottom: 0.25rem; color: var(--color-primary); }
.exercise-topic { font-size: 0.85rem; color: var(--color-text-light); margin-bottom: 1rem; font-style: italic; }
.exercise-text p { font-size: 0.9rem; color: var(--color-text); line-height: 1.6; margin-bottom: 0.5rem; }
.exercise-text p:last-child { margin-bottom: 0; }

.instruction-box { background: var(--color-bg-highlight); border: 2px solid var(--color-accent); border-radius: var(--radius-lg); padding: 2rem; margin: 1.5rem 0; max-width: 700px; }
.instruction-box h3 { font-size: 1.05rem; margin-bottom: 1rem; color: var(--color-accent); }
.instruction-box p { font-size: 0.95rem; color: var(--color-text); line-height: 1.7; margin-bottom: 0.75rem; }
.instruction-box ol { margin: 0.75rem 0 0.75rem 1.5rem; }
.instruction-box li { font-size: 0.95rem; margin-bottom: 0.5rem; line-height: 1.6; }

.tip-box { background: var(--color-bg-alt); border-left: 4px solid var(--color-primary); border-radius: 0 var(--radius) var(--radius) 0; padding: 1.25rem 1.5rem; margin: 1.5rem 0; max-width: 700px; }
.tip-box strong { display: block; margin-bottom: 0.5rem; font-size: 0.95rem; }
.tip-box ul { margin: 0 0 0 1.25rem; }
.tip-box li { font-size: 0.9rem; color: var(--color-text-light); margin-bottom: 0.3rem; line-height: 1.6; }

.checklist { max-width: 600px; margin-top: 1.5rem; }
.checklist-item { display: flex; gap: 1rem; align-items: flex-start; padding: 1rem 0; border-bottom: 1px solid var(--color-border); }
.checklist-item:last-child { border-bottom: none; }
.checklist-icon { display: inline-flex; align-items: center; justify-content: center; width: 2rem; height: 2rem; background: var(--color-success); color: white; border-radius: 50%; font-weight: 700; font-size: 0.85rem; flex-shrink: 0; margin-top: 0.1rem; }
.checklist-item strong { display: block; font-size: 0.95rem; margin-bottom: 0.15rem; }
.checklist-item p { font-size: 0.85rem; color: var(--color-text-light); margin: 0; }

.form-hint { display: block; margin-top: 0.25rem; font-size: 0.8rem; color: var(--color-text-light); }

/* Scan features (used in scan highlight — legacy compat) */
.scan-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.5rem; margin: 2rem auto; }
.feature { text-align: center; }
.feature strong { display: block; font-size: 1rem; margin-bottom: 0.25rem; color: var(--color-text); }
.feature p { font-size: 0.85rem; }

/* === Responsive === */
@media (max-width: 768px) {
    .nav-toggle-btn { display: flex; }
    .nav-links { display: none; width: 100%; flex-direction: column; gap: 0.75rem; padding-top: 1rem; }
    .nav-toggle:checked ~ .nav-links { display: flex; }

    .hero { padding: 3rem 1.5rem; }
    .hero-inner { grid-template-columns: 1fr; gap: 2rem; text-align: center; }
    .hero-text h1 { font-size: 2rem; }
    .hero-text p { margin-left: auto; margin-right: auto; }
    .hero-image img { width: 220px; height: 220px; }

    .section { padding: 3.5rem 1.5rem; }
    .section h2 { font-size: 1.6rem; }

    .card-grid, .service-grid, .testimonial-grid, .results-grid, .exercise-grid { grid-template-columns: 1fr; }
    .steps { grid-template-columns: 1fr 1fr; gap: 1.5rem; }

    .about-layout { grid-template-columns: 1fr; text-align: center; }
    .about-image img { width: 200px; }

    .price-box { padding: 2rem 1.5rem; }

    .footer-inner { grid-template-columns: 1fr; gap: 1.5rem; }
}

@media (max-width: 480px) {
    .hero-text h1 { font-size: 1.7rem; }
    .steps { grid-template-columns: 1fr; }
    .btn-large { padding: 0.8rem 1.5rem; font-size: 1rem; }
}