/* ============================================
   FS Production — frank-stephan.com
   Stylesheet V1
   ============================================ */

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

/* --- Design Tokens --- */
:root {
  --color-navy: #1B2A4A;
  --color-teal: #2A9D8F;
  --color-teal-dark: #238477;
  --color-white: #FFFFFF;
  --color-light-gray: #F5F5F5;
  --color-dark-gray: #333333;
  --color-medium-gray: #666666;
  --color-border: #C8C8C8;

  --font-heading: "Georgia", "Times New Roman", serif;
  --font-body: "Calibri", "Gill Sans", "Segoe UI", -apple-system, sans-serif;

  --section-padding: 6rem 2rem;
  --max-width: 960px;
}

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

body {
  font-family: var(--font-body);
  color: var(--color-dark-gray);
  line-height: 1.7;
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-navy);
  line-height: 1.3;
  font-weight: normal;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 1.25rem;
}

h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
}

p {
  margin-bottom: 1rem;
}

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

a:hover {
  color: var(--color-teal-dark);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background-color: var(--color-navy);
  padding: 1rem 2rem;
  transition: box-shadow 0.3s ease;
}

.nav.scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--color-white);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.nav-logo:hover {
  color: var(--color-white);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--color-white);
}

.nav-cta {
  display: inline-block;
  background-color: var(--color-teal);
  color: var(--color-white) !important;
  padding: 0.6rem 1.5rem;
  border-radius: 4px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: background-color 0.2s;
  white-space: nowrap;
}

.nav-cta:hover {
  background-color: var(--color-teal-dark);
  color: var(--color-white) !important;
}

/* Hamburger */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  margin: 5px 0;
  transition: transform 0.3s, opacity 0.3s;
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  background-color: var(--color-teal);
  color: var(--color-white);
  padding: 1rem 2.5rem;
  border: none;
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s;
  text-decoration: none;
  text-align: center;
}

.btn:hover {
  background-color: var(--color-teal-dark);
  color: var(--color-white);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--color-white);
  color: var(--color-white);
}

.btn-outline:hover {
  background-color: var(--color-white);
  color: var(--color-navy);
}

/* --- Hero --- */
.hero {
  background-color: var(--color-navy);
  color: var(--color-white);
  padding: 10rem 2rem 6rem;
  text-align: center;
}

.hero h1 {
  color: var(--color-white);
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 640px;
  margin: 0 auto 2.5rem;
  line-height: 1.8;
}

.hero .btn {
  font-size: 1.1rem;
  padding: 1.1rem 3rem;
}

/* --- Section Base --- */
.section {
  padding: var(--section-padding);
}

.section-light {
  background-color: var(--color-light-gray);
}

.section-navy {
  background-color: var(--color-navy);
  color: var(--color-white);
}

.section-navy h2,
.section-navy h3 {
  color: var(--color-white);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3.5rem;
}

.section-header p {
  color: var(--color-medium-gray);
  font-size: 1.1rem;
}

.section-navy .section-header p {
  color: rgba(255, 255, 255, 0.8);
}

/* --- Problem Cards --- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.card {
  background-color: var(--color-white);
  padding: 2.5rem 2rem;
  border-radius: 6px;
  border-top: 3px solid var(--color-teal);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
  display: block;
}

.card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
}

.card p {
  color: var(--color-medium-gray);
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* --- Die 4 Säulen --- */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.pillar {
  padding: 2rem;
  border-left: 3px solid var(--color-teal);
}

.pillar-icon {
  color: var(--color-teal);
  font-size: 0.75rem;
  margin-bottom: 0.75rem;
}

.pillar h3 {
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
}

.pillar p {
  color: var(--color-medium-gray);
  font-size: 0.95rem;
  margin-bottom: 0;
}

.pillars-conclusion {
  max-width: 700px;
  margin: 3rem auto 0;
  text-align: center;
}

.pillars-conclusion p {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  color: var(--color-navy);
  font-style: italic;
  line-height: 1.7;
}

/* --- About / Über Frank --- */
.about-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 4rem;
  align-items: center;
  max-width: var(--max-width);
  margin: 0 auto;
}

.about-image img {
  border-radius: 6px;
  width: 100%;
}

.about-text h2 {
  color: var(--color-white);
}

.about-meta {
  font-size: 1.05rem;
  color: var(--color-teal);
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.about-text p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.05rem;
}

.about-leitsaetze {
  color: var(--color-teal) !important;
  font-size: 1.1rem !important;
  margin-top: 1.5rem;
  letter-spacing: 0.02em;
}

.about-stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2rem;
  color: var(--color-teal);
  display: block;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
}

/* --- Modul A --- */
.modul-content {
  max-width: 720px;
  margin: 0 auto;
}

.modul-subtitle {
  font-size: 1.15rem;
  color: var(--color-teal);
  font-weight: 600;
  margin-bottom: 2rem;
}

.modul-features {
  list-style: none;
  margin-bottom: 2.5rem;
}

.modul-features li {
  padding: 1rem 0;
  border-bottom: 1px solid #E8E8E8;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

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

.feature-icon {
  color: var(--color-teal);
  font-size: 1.25rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.feature-text strong {
  display: block;
  color: var(--color-navy);
  margin-bottom: 0.25rem;
}

.feature-text span {
  color: var(--color-medium-gray);
  font-size: 0.95rem;
}

.modul-result {
  background-color: var(--color-light-gray);
  padding: 2rem 2.5rem;
  border-radius: 6px;
  margin-bottom: 2.5rem;
  border-left: 4px solid var(--color-teal);
}

.modul-result p {
  margin-bottom: 0;
  color: var(--color-navy);
  font-size: 1.05rem;
}

.modul-goal {
  font-size: 1.1rem;
  color: var(--color-navy);
  margin-bottom: 2rem;
}

.modul-outlook {
  text-align: center;
  margin-bottom: 2.5rem;
  color: var(--color-medium-gray);
  font-size: 1rem;
}

.modul-outlook strong {
  color: var(--color-navy);
}

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

/* --- Contact Form --- */
.contact-inner {
  max-width: 600px;
  margin: 0 auto;
}

.contact-intro {
  text-align: center;
  margin-bottom: 2.5rem;
}

.contact-intro p {
  color: var(--color-medium-gray);
  font-size: 1.05rem;
  font-style: italic;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.9rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-dark-gray);
  background-color: var(--color-white);
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-teal);
  box-shadow: 0 0 0 3px rgba(42, 157, 143, 0.1);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.form-submit {
  text-align: center;
  margin-top: 2rem;
}

.form-submit .btn {
  width: 100%;
  max-width: 320px;
}

.form-alt {
  text-align: center;
  margin-top: 2rem;
  font-size: 0.9rem;
  color: var(--color-medium-gray);
}

.form-alt a {
  color: var(--color-teal);
  font-weight: 600;
}

.form-success {
  display: none;
  text-align: center;
  padding: 2rem;
}

.form-success.visible {
  display: block;
}

.form-success p {
  font-size: 1.1rem;
  color: var(--color-navy);
}

/* --- Footer --- */
.footer {
  background-color: var(--color-navy);
  color: rgba(255, 255, 255, 0.7);
  padding: 2.5rem 2rem;
  text-align: center;
  font-size: 0.9rem;
}

.footer-links {
  margin-top: 0.75rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  margin: 0 1rem;
  transition: color 0.2s;
}

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

/* --- Legal Pages (Impressum, Datenschutz) --- */
.legal-content {
  padding: 8rem 2rem 4rem;
  max-width: 720px;
  margin: 0 auto;
}

.legal-content h1 {
  font-size: 2rem;
  margin-bottom: 2rem;
}

.legal-content h2 {
  font-size: 1.35rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

.legal-content p,
.legal-content li {
  color: var(--color-medium-gray);
  font-size: 0.95rem;
}

.legal-content ul {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.legal-content li {
  margin-bottom: 0.5rem;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  h1 {
    font-size: 1.85rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  :root {
    --section-padding: 4rem 1.5rem;
  }

  /* Nav Mobile */
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-navy);
    flex-direction: column;
    padding: 1.5rem 2rem 2rem;
    gap: 1.25rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

  /* Hero */
  .hero {
    padding: 8rem 1.5rem 4rem;
  }

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

  /* Cards */
  .cards-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  /* Pillars */
  .pillars-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  /* About */
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    text-align: center;
  }

  .about-image {
    max-width: 280px;
    margin: 0 auto;
  }

  .about-stats {
    justify-content: center;
  }

  /* Modul */
  .modul-result {
    padding: 1.5rem;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.6rem;
  }

  .hero .btn {
    font-size: 1rem;
    padding: 1rem 2rem;
  }

  .about-stats {
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
  }
}