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

:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #dbeafe;
    --color-text: #1e293b;
    --color-text-secondary: #64748b;
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-bg-dark: #0f172a;
    --color-border: #e2e8f0;
    --color-success: #16a34a;
    --color-accent: #f59e0b;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
    --transition: 0.2s ease;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

/* ===== Layout ===== */
.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 80px 0;
}

/* ===== Typography ===== */
h1, h2, h3 {
    line-height: 1.25;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 48px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background: var(--color-bg-alt);
    color: var(--color-text);
}

.btn-cta {
    font-size: 1.125rem;
    padding: 18px 40px;
    border-radius: var(--radius);
}

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

/* ===== Block 1: Hero ===== */
.hero {
    padding: 120px 0 100px;
    background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 100%);
    color: #fff;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    max-width: 800px;
    margin: 0 auto 24px;
}

.hero h2 {
    font-size: 1.25rem;
    font-weight: 400;
    color: #cbd5e1;
    max-width: 700px;
    margin: 0 auto 48px;
    line-height: 1.6;
}

.hero .btn-cta {
    background: var(--color-primary);
}

.hero .btn-cta:hover {
    background: #3b82f6;
}

/* ===== Block 2: Problems ===== */
.problems {
    background: var(--color-bg-alt);
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.card {
    background: var(--color-bg);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
    transition: all var(--transition);
    border: 1px solid var(--color-border);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.card h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.card-subtitle {
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: 12px;
    font-size: 0.95rem;
}

.card p:last-child {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

/* ===== Block 3: Solution ===== */
.solution {
    background: var(--color-bg);
}

.solution-text {
    max-width: 800px;
    margin: 0 auto 48px;
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    line-height: 1.7;
}

.benefits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.benefit {
    background: var(--color-primary-light);
    border-radius: var(--radius);
    padding: 32px;
    border-left: 4px solid var(--color-primary);
}

.benefit-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.benefit h3 {
    font-size: 1.15rem;
    margin-bottom: 12px;
    color: var(--color-primary-dark);
}

.benefit p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

/* ===== Block 4: How It Works ===== */
.how-it-works {
    background: var(--color-bg-alt);
}

.timeline {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 24px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-border);
}

.timeline-step {
    display: flex;
    gap: 24px;
    margin-bottom: 40px;
    position: relative;
}

.timeline-step:last-child {
    margin-bottom: 0;
}

.step-number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.step-content {
    padding-top: 8px;
}

.step-content h3 {
    font-size: 1.15rem;
    margin-bottom: 4px;
}

.step-duration {
    display: inline-block;
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 2px 10px;
    border-radius: 100px;
    margin-bottom: 8px;
}

.step-content p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

/* ===== Block 5: Target Audience ===== */
.audience {
    background: var(--color-bg);
}

.checklist {
    list-style: none;
    max-width: 700px;
    margin: 0 auto;
}

.checklist li {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 1.1rem;
}

.checklist li:last-child {
    border-bottom: none;
}

.check {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: #dcfce7;
    color: var(--color-success);
    font-weight: 700;
    flex-shrink: 0;
    font-size: 1rem;
}

/* ===== Block 6: Final CTA ===== */
.final-cta {
    background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 100%);
    color: #fff;
    text-align: center;
}

.final-cta .section-title {
    color: #fff;
}

.final-cta p {
    max-width: 600px;
    margin: 0 auto 40px;
    color: #cbd5e1;
    font-size: 1.1rem;
    line-height: 1.7;
}

/* ===== Quiz Overlay ===== */
.quiz-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    animation: fadeIn 0.25s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.quiz-container {
    background: var(--color-bg);
    border-radius: var(--radius);
    width: 100%;
    max-width: 640px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 40px;
    position: relative;
    box-shadow: var(--shadow-xl);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from { transform: translateY(30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.quiz-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-text-secondary);
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all var(--transition);
}

.quiz-close:hover {
    background: var(--color-bg-alt);
    color: var(--color-text);
}

/* Progress Bar */
.quiz-progress {
    width: 100%;
    height: 6px;
    background: var(--color-border);
    border-radius: 100px;
    margin-bottom: 8px;
    overflow: hidden;
}

.quiz-progress-bar {
    height: 100%;
    background: var(--color-primary);
    border-radius: 100px;
    width: 25%;
    transition: width 0.4s ease;
}

.quiz-step-label {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-bottom: 32px;
}

/* Quiz Steps */
.quiz-step h2 {
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.form-group input[type="text"],
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color var(--transition);
    background: var(--color-bg);
    color: var(--color-text);
}

.form-group input[type="text"]:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.optional {
    font-weight: 400;
    color: var(--color-text-secondary);
    font-size: 0.85rem;
}

/* Radio & Checkbox groups */
.radio-group,
.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.radio-group-vertical {
    flex-direction: column;
}

.radio-option,
.checkbox-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    font-size: 0.95rem;
}

.radio-option:hover,
.checkbox-option:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.radio-option input,
.checkbox-option input {
    accent-color: var(--color-primary);
}

.radio-option input:checked + .radio-label,
.checkbox-option input:checked + .checkbox-label {
    color: var(--color-primary);
    font-weight: 600;
}

.radio-option:has(input:checked),
.checkbox-option:has(input:checked) {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.quiz-nav {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    margin-top: 8px;
}

.btn-next {
    width: 100%;
}

.quiz-nav .btn-next {
    width: auto;
    flex: 1;
}

/* ===== Analysis Screen ===== */
.analysis-screen {
    text-align: center;
    padding: 60px 0;
}

.spinner {
    width: 56px;
    height: 56px;
    border: 4px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 24px;
}

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

.analysis-text {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    transition: opacity 0.3s ease;
}

/* ===== Results Screen ===== */
.results-screen h2 {
    text-align: center;
    margin-bottom: 32px;
}

.result-card {
    background: var(--color-bg-alt);
    border-radius: var(--radius);
    padding: 32px;
    border: 1px solid var(--color-border);
    margin-bottom: 32px;
}

.result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
}

.result-row:last-of-type {
    border-bottom: none;
}

.result-label {
    font-weight: 600;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.result-value {
    font-weight: 700;
    font-size: 1.05rem;
}

.result-highlight {
    color: var(--color-primary);
    font-size: 1.2rem;
}

.result-features {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
}

.result-features .result-label {
    display: block;
    margin-bottom: 12px;
}

.result-features ul {
    list-style: none;
    padding: 0;
}

.result-features li {
    padding: 6px 0;
    padding-left: 20px;
    position: relative;
    color: var(--color-text);
    font-size: 0.95rem;
}

.result-features li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: 700;
}

.results-cta {
    text-align: center;
}

.results-cta p {
    color: var(--color-text-secondary);
    margin-bottom: 24px;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ===== Booking Screen ===== */
.booking-screen h2 {
    text-align: center;
    margin-bottom: 8px;
}

.booking-screen > p {
    text-align: center;
    color: var(--color-text-secondary);
    margin-bottom: 32px;
}

.booking-slots {
    margin-bottom: 32px;
}

.booking-day-header {
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: 12px;
    color: var(--color-text);
}

.booking-day {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.booking-day-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.booking-day-slots {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.booking-slot {
    padding: 10px 20px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    cursor: pointer;
    font-size: 0.95rem;
    transition: all var(--transition);
    font-family: inherit;
}

.booking-slot:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.booking-slot.selected {
    border-color: var(--color-primary);
    background: var(--color-primary);
    color: #fff;
}

/* ===== Confirmation Screen ===== */
.confirmation-screen {
    text-align: center;
    padding: 40px 0;
}

.confirmation-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: #dcfce7;
    color: var(--color-success);
    font-size: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.confirmation-screen h2 {
    margin-bottom: 16px;
}

.confirmation-screen p {
    color: var(--color-text-secondary);
    max-width: 400px;
    margin: 0 auto 32px;
    line-height: 1.6;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }

    .hero {
        padding: 80px 0 60px;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .hero h2 {
        font-size: 1.05rem;
    }

    .section-title {
        font-size: 1.5rem;
        margin-bottom: 32px;
    }

    .btn-cta {
        font-size: 1rem;
        padding: 16px 28px;
    }

    .cards {
        grid-template-columns: 1fr;
    }

    .benefits {
        grid-template-columns: 1fr;
    }

    .quiz-container {
        padding: 24px;
    }

    .quiz-step h2 {
        font-size: 1.25rem;
    }

    .result-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

    .quiz-nav {
        flex-direction: column;
    }
}