/* ============================================================================
   docjung.de/waermepumpe – Stylesheet (Vortrag Wärmepumpe)
   Basis: Vorlage qualifikationspruefung.de (Frühjahr 2026)
   DSGVO-konform: Keine externen Ressourcen, lokal gehostete Fonts
   ============================================================================ */

/* ============================================================================
   CSS Custom Properties (Farben, Typografie, Abstände)
   ============================================================================ */
:root {
  /* Farben – inspiriert von anthropic.com */
  --color-bg: #FAF8F5;
  --color-bg-alt: #F2EDE8;
  --color-dark: #1A1A2E;
  --color-dark-card: #1E1E32;
  --color-text: #2D2D3A;
  --color-text-secondary: #6B6B7B;
  --color-text-light: #F0ECE6;
  --color-accent: #D4845A;          /* nur dekorativ (Linien, Flächen) */
  --color-accent-hover: #C4744A;
  --color-accent-strong: #A8552E;   /* Text/Buttons: Kontrast 5,2 auf Weiß */
  --color-accent-strong-hover: #8E4524;
  --color-border: #E0DAD2;
  --color-white: #FFFFFF;

  /* Typografie */
  --font-heading: 'Playfair Display', 'Georgia', serif;
  --font-body: 'Source Sans 3', 'Segoe UI', sans-serif;
  --font-size-base: 17px;
  --line-height-base: 1.75;
  --line-height-heading: 1.25;

  /* Layout */
  --content-width: 760px;
  --content-width-wide: 960px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3.5rem;
  --spacing-xl: 5rem;
  --spacing-xxl: 7rem;

  /* Header */
  --header-height: 72px;

  /* Übergänge */
  --transition-fast: 0.2s ease;
  --transition-base: 0.35s ease;
  --transition-slow: 0.6s ease;
}


/* ============================================================================
   Lokale Schriftarten (font-display: swap für Performance)
   Hinweis: Fonts müssen mit download-fonts.sh heruntergeladen werden
   ============================================================================ */
@font-face {
  font-family: 'Playfair Display';
  src: url('../fonts/PlayfairDisplay-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Playfair Display';
  src: url('../fonts/PlayfairDisplay-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Source Sans 3';
  src: url('../fonts/SourceSans3-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Source Sans 3';
  src: url('../fonts/SourceSans3-SemiBold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Source Sans 3';
  src: url('../fonts/SourceSans3-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}


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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-accent-strong);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover,
a:focus {
  color: var(--color-accent-strong-hover);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-accent-strong);
  outline-offset: 3px;
  border-radius: 2px;
}

ul, ol {
  padding-left: 1.5em;
}

li {
  margin-bottom: 0.4em;
}


/* ============================================================================
   Typografie
   ============================================================================ */
h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: var(--line-height-heading);
  color: var(--color-text);
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

h3 {
  font-size: clamp(1.15rem, 2.5vw, 1.4rem);
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-xs);
}

p {
  margin-bottom: var(--spacing-sm);
}

strong {
  font-weight: 600;
}


/* ============================================================================
   Layout-Container
   ============================================================================ */
.container {
  max-width: var(--content-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-md);
  padding-right: var(--spacing-md);
}

.container--wide {
  max-width: var(--content-width-wide);
}


/* ============================================================================
   Header – Sticky, clean wie anthropic.com
   ============================================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-bg);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
  height: var(--header-height);
}

.site-header--scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: 0 1px 8px rgba(0, 0, 0, 0.06);
}

.site-header__inner {
  max-width: var(--content-width-wide);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Logo / Firmenname */
.site-header__logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  flex-shrink: 0;
}

.site-header__logo-img {
  height: 110px;
  width: auto;
  border-radius: 4px;
  transition: transform var(--transition-fast);
}

.site-header__logo:hover .site-header__logo-img {
  transform: scale(2.2);
}

.site-header__logo-text {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
  transition: color var(--transition-fast);
}

.site-header__logo:hover .site-header__logo-text {
  color: var(--color-accent-strong);
}

/* Navigation */
.site-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-nav__link {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
  position: relative;
}

.site-nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-base);
}

.site-nav__link:hover,
.site-nav__link--active {
  color: var(--color-text);
}

.site-nav__link:hover::after,
.site-nav__link--active::after {
  width: 100%;
}

/* Hamburger-Button (nur Mobile) */
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 110;
}

.hamburger__line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  margin: 5px 0;
  transition: transform var(--transition-base), opacity var(--transition-fast);
}


/* ============================================================================
   Hero-Bereich (Startseite)
   ============================================================================ */
.hero {
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  text-align: center;
}

.hero__content {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.hero__title {
  font-size: clamp(2.2rem, 6vw, 3.4rem);
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.025em;
}

.hero__subtitle {
  font-size: clamp(1.05rem, 2.5vw, 1.25rem);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto var(--spacing-lg);
  line-height: 1.65;
}

/* Hero-Grafik (SVG-Schema, volle Breite) */
.hero__figure {
  max-width: var(--content-width-wide);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.hero__figure img {
  width: 100%;
  height: auto;
}


/* ============================================================================
   Dunkler Kasten (wie anthropic.com Highlight-Bereich)
   ============================================================================ */
.dark-card {
  background-color: var(--color-dark-card);
  color: var(--color-text-light);
  padding: var(--spacing-lg) var(--spacing-md);
  border-radius: 12px;
  margin: var(--spacing-lg) auto;
  max-width: var(--content-width);
  text-align: center;
}

.dark-card p {
  font-size: 1.15rem;
  line-height: 1.7;
  max-width: 620px;
  margin: 0 auto var(--spacing-md);
  color: var(--color-text-light);
}

.dark-card .btn {
  margin-top: var(--spacing-sm);
}


/* ============================================================================
   Buttons
   ============================================================================ */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  padding: 0.85rem 2rem;
  border-radius: 8px;
  text-decoration: none;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: 2px solid transparent;
}

.btn--primary {
  background-color: var(--color-accent-strong);
  color: var(--color-white);
  border-color: var(--color-accent-strong);
}

.btn--primary:hover,
.btn--primary:focus {
  background-color: var(--color-accent-strong-hover);
  border-color: var(--color-accent-strong-hover);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(168, 85, 46, 0.3);
}

.btn--dark-outline {
  background-color: transparent;
  color: var(--color-text);
  border-color: var(--color-text);
}

.btn--dark-outline:hover,
.btn--dark-outline:focus {
  background-color: var(--color-text);
  color: var(--color-white);
}

.btn--light-outline {
  background-color: transparent;
  color: var(--color-text-light);
  border-color: var(--color-text-light);
}

.btn--light-outline:hover,
.btn--light-outline:focus {
  background-color: var(--color-text-light);
  color: var(--color-dark);
}


/* ============================================================================
   Kontaktbereich (Startseite)
   ============================================================================ */
.contact-section {
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.contact-section h2 {
  margin-top: 0;
}

.contact-info {
  margin: var(--spacing-md) auto;
  max-width: 400px;
}

.contact-info p {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.contact-info a {
  color: var(--color-text);
  font-weight: 600;
}

.contact-info a:hover {
  color: var(--color-accent-strong);
}


/* ============================================================================
   Inhaltsseiten (Qualifikationsprüfung, Über mich, etc.)
   ============================================================================ */
.page-content {
  padding: var(--spacing-lg) 0 var(--spacing-xl);
}

.page-content h1 {
  margin-bottom: var(--spacing-md);
}

.page-content h2 {
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--color-border);
}

.page-content h2:first-of-type {
  border-top: none;
  padding-top: 0;
}

/* Bilder in Inhaltsseiten */
.content-image {
  margin: var(--spacing-lg) 0;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.content-image img {
  width: 100%;
  display: block;
}

.content-image figcaption {
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-bg-alt);
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  text-align: center;
}


/* ============================================================================
   Kontaktseite
   ============================================================================ */
.contact-card {
  background-color: var(--color-bg-alt);
  padding: var(--spacing-lg);
  border-radius: 12px;
  margin-top: var(--spacing-md);
}

.contact-card p {
  font-size: 1.05rem;
  margin-bottom: 0.6rem;
}

.contact-card address {
  font-style: normal;
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}


/* ============================================================================
   Rechtliche Seiten (Impressum, Datenschutz)
   ============================================================================ */
.legal-content h2 {
  font-size: 1.35rem;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-md);
}

.legal-content h2:first-of-type {
  border-top: none;
  padding-top: 0;
}

.legal-content ul {
  margin-bottom: var(--spacing-sm);
}


/* ============================================================================
   Footer
   ============================================================================ */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-md) 0;
  margin-top: var(--spacing-xl);
}

.site-footer__inner {
  max-width: var(--content-width-wide);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.site-footer__links {
  display: flex;
  gap: var(--spacing-md);
}

.site-footer__link {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  text-decoration: none;
}

.site-footer__link:hover {
  color: var(--color-text);
}

.site-footer__copy {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}


/* ============================================================================
   Sanfte Einblend-Animationen (CSS-only, kein JS nötig)
   ============================================================================ */
@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero__title {
  animation: fade-in-up 0.8s ease-out;
}

.hero__subtitle {
  animation: fade-in-up 0.8s ease-out 0.15s both;
}

.hero__figure {
  animation: fade-in-up 0.8s ease-out 0.3s both;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  html {
    scroll-behavior: auto;
  }
}


/* ============================================================================
   Responsive Design – Mobile First
   ============================================================================ */

/* Mobile-Anpassungen (max-width: 768px) */
@media (max-width: 768px) {

  :root {
    --header-height: 60px;
  }

  /* Hamburger anzeigen */
  .hamburger {
    display: block;
  }

  /* Navigation als Mobile-Overlay */
  .site-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--color-bg);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2.5rem;
    transition: right var(--transition-base);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
    z-index: 105;
  }

  .site-nav--open {
    right: 0;
  }

  .site-nav__link {
    font-size: 1.15rem;
  }

  /* Hamburger-Animation bei geöffnetem Menü */
  .hamburger[aria-expanded="true"] .hamburger__line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .hamburger[aria-expanded="true"] .hamburger__line:nth-child(2) {
    opacity: 0;
  }

  .hamburger[aria-expanded="true"] .hamburger__line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  /* Hero-Anpassungen */
  .hero {
    padding: var(--spacing-lg) 0 var(--spacing-md);
  }

  .hero__figure {
    padding: 0 var(--spacing-sm);
  }

  /* Dunkler Kasten */
  .dark-card {
    margin-left: var(--spacing-sm);
    margin-right: var(--spacing-sm);
    padding: var(--spacing-md);
  }

  /* Footer */
  .site-footer__inner {
    flex-direction: column;
    text-align: center;
  }

  .site-footer__links {
    justify-content: center;
  }
}


/* ============================================================================
   Startseite Vortrag: Kicker, Badge, Schema, Abschnitte, Eckdaten
   ============================================================================ */
.hero__kicker {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-accent-strong);
  margin-bottom: var(--spacing-sm);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.badge {
  display: inline-block;
  padding: 0.35rem 0.9rem;
  border: 2px solid var(--color-accent-strong);
  border-radius: 999px;
  color: var(--color-accent-strong);
  font-weight: 700;
}

.schema svg {
  display: block;
  width: 100%;
  height: auto;
}

.schema--hoch {
  display: none;
}

.section {
  padding-top: var(--spacing-lg);
}

.section h2 {
  margin-top: 0;
  margin-bottom: var(--spacing-sm);
}

.facts {
  margin: var(--spacing-md) 0;
  border-top: 1px solid var(--color-border);
}

.facts > div {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: var(--spacing-sm);
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--color-border);
}

.facts dt {
  font-weight: 600;
  color: var(--color-text-secondary);
}

.topics {
  margin: var(--spacing-sm) 0 var(--spacing-md);
}

address.contact-card {
  font-style: normal;
  padding: var(--spacing-md) var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}


/* ============================================================================
   Zähler: angemeldet / frei
   ============================================================================ */
.stats {
  display: inline-flex;
  align-items: stretch;
  border: 2px solid var(--color-border);
  border-radius: 12px;
  background-color: var(--color-white);
  overflow: hidden;
}

.stats__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1.4rem;
  line-height: 1.1;
  text-align: center;
}

.stats__item + .stats__item {
  border-left: 2px solid var(--color-border);
}

.stats__zahl,
.stats__wort {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-text);
}

.stats__zahl {
  font-size: 3rem;
}

.stats__wort {
  font-size: clamp(1.3rem, 5vw, 1.8rem);
  padding: 0.35rem 0;
}

.stats__item--frei .stats__zahl {
  color: #2E7D4F;   /* Grün: 5,0:1 auf Weiß */
}

.stats__item--hinweis .stats__wort {
  color: var(--color-accent-strong);
}

.stats__label {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

/* große Variante im Abschnitt Anmeldung */
.stats--gross {
  display: flex;
  margin: var(--spacing-md) 0;
}

.stats--gross .stats__item {
  flex: 1;
  padding: 1rem 1.5rem;
}

.stats--gross .stats__zahl {
  font-size: clamp(3.5rem, 12vw, 5.5rem);
}

.stats--gross .stats__wort {
  font-size: clamp(1.5rem, 6vw, 2.6rem);
}

.stats--gross .stats__label {
  font-size: 1.25rem;
}


/* ============================================================================
   Anmeldeformular
   ============================================================================ */
.counter {
  background-color: var(--color-bg-alt);
  border-left: 4px solid var(--color-accent);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 4px;
  margin: var(--spacing-md) 0;
}

.form-error {
  background-color: #FBEAEA;
  border-left: 4px solid #B3261E;
  color: #7A1A14;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 4px;
  margin-bottom: var(--spacing-md);
}

.form {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: var(--spacing-md);
}

.form__field {
  margin-bottom: var(--spacing-md);
}

.form__field label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.form__field input,
.form__field select,
.form__field textarea {
  width: 100%;
  font: inherit;
  color: var(--color-text);
  background-color: var(--color-white);
  border: 2px solid #8A8478;
  border-radius: 6px;
  padding: 0.55rem 0.75rem;
}

.form__field select {
  width: auto;
  min-width: 6rem;
}

.form__field input[inputmode="numeric"] {
  width: 7rem;
}

.form__field textarea {
  resize: vertical;
}

.form__hint,
.form__req {
  font-weight: 400;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

p.form__hint {
  margin: 0.35rem 0 0;
}

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

/* Honeypot: aus dem sichtbaren Bereich geschoben, nicht display:none (das erkennen Bots) */
.form__hp {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}


/* ============================================================================
   Hilfsklassen (ersetzen die style-Attribute der Vorlage → CSP ohne 'unsafe-inline')
   ============================================================================ */
.dark-card--inline {
  margin-top: var(--spacing-lg);
  margin-left: 0;
  margin-right: 0;
}

.text-note {
  margin-top: var(--spacing-md);
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.btn--spaced {
  margin-top: 1.5rem;
}


/* Hochkant-Schema auf schmalen Bildschirmen */
@media (max-width: 640px) {
  .stats {
    display: flex;
    width: 100%;
  }

  .stats__item {
    flex: 1;
    padding: 0.5rem 0.75rem;
  }

  .facts > div {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .form {
    padding: var(--spacing-sm);
  }

  address.contact-card {
    padding: var(--spacing-md);
  }

  .schema--quer {
    display: none;
  }

  .schema--hoch {
    display: block;
    max-width: 440px;
    margin: 0 auto;
  }
}


/* ============================================================================
   Druckstile
   ============================================================================ */
@media print {
  .site-header,
  .site-footer,
  .hamburger,
  .btn {
    display: none;
  }

  body {
    font-size: 12pt;
    color: #000;
    background: #fff;
  }

  .dark-card {
    background: #eee;
    color: #000;
  }
}


/* ============================================================================
   Verwaltung (admin.php)
   ============================================================================ */
.table-scroll {
  overflow-x: auto;
  margin: var(--spacing-md) 0;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.admin-table th,
.admin-table td {
  text-align: left;
  vertical-align: top;
  padding: 0.5rem 0.6rem;
  border-bottom: 1px solid var(--color-border);
}

.admin-table__frage {
  min-width: 16rem;
}

.btn-link {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  color: var(--color-accent-strong);
  text-decoration: underline;
  cursor: pointer;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}