/* ===== RESET & BASE ===== */

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-bg: #fafaf9;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #6b6b6b;
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-light: #eff6ff;
  --color-border: #e5e5e5;
  --color-success: #16a34a;
  --color-success-bg: #f0fdf4;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --max-width: 640px;
}

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

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ===== LAYOUT ===== */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.screen {
  display: none;
  min-height: 100vh;
}

.screen.active {
  display: block;
}

/* ===== BUTTONS ===== */

.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  padding: 16px 32px;
  width: 100%;
  max-width: 400px;
}

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

/* ===== HERO ===== */

.hero {
  padding: 80px 0 40px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.subline {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 480px;
  margin: 0 auto 32px;
  line-height: 1.5;
}

.trust-line {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 12px;
}

/* ===== BENEFITS ===== */

.benefits {
  padding: 40px 0;
}

.benefit-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.benefit-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 1rem;
  line-height: 1.5;
}

.benefit-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 700;
}

/* ===== PROBLEM ===== */

.problem {
  padding: 48px 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.problem h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 24px;
  line-height: 1.3;
}

.pain-points {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.pain-points li {
  padding-left: 20px;
  position: relative;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.pain-points li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-text-muted);
}

/* ===== HOW IT WORKS ===== */

.how-it-works {
  padding: 48px 0;
}

.how-it-works h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 32px;
  text-align: center;
}

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

.step {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.step-number {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  font-weight: 700;
  font-size: 0.875rem;
}

.step h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.step p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* ===== FAQ ===== */

.faq {
  padding: 48px 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.faq h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.faq-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-item h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.faq-item p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ===== FINAL CTA ===== */

.final-cta {
  padding: 64px 0;
  text-align: center;
}

.final-cta h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 24px;
  line-height: 1.3;
}

/* ===== FOOTER ===== */

.footer {
  padding: 32px 0;
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.footer-links {
  margin-top: 8px;
}

.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--color-text);
}

/* ===== QUIZ ===== */

#quiz {
  background: var(--color-bg);
  display: none;
  padding-top: 40px;
}

#quiz.active {
  display: flex;
  flex-direction: column;
}

.quiz-header {
  padding: 20px 0 32px;
}

.progress-bar {
  height: 4px;
  background: var(--color-border);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 12px;
}

.progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 2px;
  transition: width 0.3s ease;
  width: 0%;
}

.progress-text {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  text-align: center;
}

.quiz-body {
  padding-bottom: 40px;
}

.quiz-question {
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.quiz-question h2 {
  font-size: 1.375rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 24px;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.quiz-option {
  display: block;
  width: 100%;
  padding: 16px 20px;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--color-text);
  text-align: left;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

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

.quiz-option:active {
  transform: scale(0.99);
}

.quiz-option.selected {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

/* ===== QUIZ NAV (Zurück-Button) ===== */

.quiz-nav {
  padding: 8px 0 24px;
}

.btn-back {
  background: transparent;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  padding: 8px 0;
  border: none;
  cursor: pointer;
  font-family: var(--font-sans);
  font-weight: 500;
  transition: color 0.15s;
}

.btn-back:hover {
  color: var(--color-text);
}

/* ===== TRANSITION SCREEN ===== */

#transition {
  background: var(--color-bg);
}

.transition-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  gap: 24px;
}

.transition-spinner {
  width: 40px;
  height: 40px;
  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); }
}

.transition-text {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* ===== RESULT ===== */

#result {
  background: var(--color-bg);
  padding-top: 48px;
}

.result-label {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: 12px;
}

#result h1 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 20px;
}

.result-intro {
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--color-text);
  margin-bottom: 8px;
}

.result-tonality {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  font-style: italic;
  margin-bottom: 40px;
}

.result-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 48px;
}

.result-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
}

.result-block h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.result-block p {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-text);
}

/* ===== EMAIL CAPTURE ===== */

.email-capture {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  margin-bottom: 48px;
}

.email-capture h2 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.3;
}

.email-subline {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.5;
  margin-bottom: 20px;
}

.email-benefits {
  list-style: none;
  text-align: left;
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.email-benefits li {
  font-size: 0.9375rem;
  line-height: 1.5;
  padding-left: 28px;
  position: relative;
}

.email-benefits li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}

.email-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

.email-form input[type="email"] {
  width: 100%;
  max-width: 400px;
  padding: 14px 16px;
  font-family: var(--font-sans);
  font-size: 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.15s;
}

.email-form input[type="email"]:focus {
  border-color: var(--color-primary);
}

.email-form .btn {
  max-width: 400px;
}

.email-capture .trust-line {
  margin-top: 16px;
}

/* E-Mail Fehler & States */

.email-error,
.email-api-error {
  font-size: 0.875rem;
  margin-top: 8px;
}

.email-error {
  color: #dc2626;
}

.email-api-error {
  color: #dc2626;
}

.email-form input[type="email"].input-error {
  border-color: #dc2626;
}

.btn-loading {
  opacity: 0.7;
  pointer-events: none;
  position: relative;
}

.btn-loading::after {
  content: '';
  display: inline-block;
  width: 16px;
  height: 16px;
  margin-left: 8px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  vertical-align: middle;
}

/* ===== EMAIL SUCCESS ===== */

.email-success {
  background: var(--color-success-bg);
  border: 1px solid var(--color-success);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  margin-bottom: 48px;
}

.email-success h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-success);
  margin-bottom: 12px;
}

.email-success p {
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--color-text);
}

/* ===== SUCCESS ACTIONS ===== */

.success-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 24px;
  align-items: center;
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  padding: 14px 32px;
  width: 100%;
  max-width: 400px;
}

.btn-secondary:hover {
  background: var(--color-primary-light);
}

/* ===== RESPONSIVE ===== */

@media (min-width: 480px) {
  .hero {
    padding: 100px 0 48px;
  }

  .email-form {
    flex-direction: row;
  }

  .email-form input[type="email"] {
    flex: 1;
  }

  .email-form .btn {
    width: auto;
    white-space: nowrap;
  }
}