/* ═══════════════════════════════════════════
   Raphael Schaad — AI-Trainer
   Editorial Warmth Design System
   ═══════════════════════════════════════════ */

/* --- Custom Properties --- */
:root {
  --yellow: #F5C518;
  --yellow-light: #FFE066;
  --yellow-glow: rgba(245, 197, 24, 0.15);
  --black: #0A0A0A;
  --black-soft: #141414;
  --gray-900: #1A1A1A;
  --gray-800: #2A2A2A;
  --gray-700: #3A3A3A;
  --gray-400: #888888;
  --gray-200: #D0D0D0;
  --white: #FAFAFA;
  --white-pure: #FFFFFF;

  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 10rem;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 100px;

  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-slow: 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: var(--black);
  color: var(--gray-200);
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

::selection {
  background: var(--yellow);
  color: var(--black);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.text-accent {
  color: var(--yellow);
}

/* --- Section Label --- */
.section-label {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--yellow);
  margin-bottom: var(--space-md);
  position: relative;
  padding-left: 2rem;
}

.section-label::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 1.2rem;
  height: 1px;
  background: var(--yellow);
}

.section-label--light {
  color: var(--yellow-light);
}

.section-label--light::before {
  background: var(--yellow-light);
}

/* --- Reveal Animation --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ═══════════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: var(--space-sm) 0;
  transition: background var(--transition), padding var(--transition), backdrop-filter var(--transition);
}

.nav.is-scrolled {
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--gray-800);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.nav__logo {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--white);
  font-weight: 400;
  letter-spacing: -0.02em;
}

.nav__toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
  z-index: 1001;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: var(--transition);
  transform-origin: center;
}

.nav__toggle.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__toggle.is-active span:nth-child(2) {
  opacity: 0;
}

.nav__toggle.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav__links {
  position: fixed;
  top: 0;
  right: -100%;
  width: min(320px, 85vw);
  height: 100vh;
  background: var(--gray-900);
  list-style: none;
  display: flex;
  flex-direction: column;
  padding: 6rem var(--space-lg) var(--space-lg);
  gap: var(--space-md);
  transition: right var(--transition-slow);
  border-left: 1px solid var(--gray-800);
}

.nav__links.is-open {
  right: 0;
}

.nav__links a {
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--gray-200);
  transition: color var(--transition);
}

.nav__links a:hover {
  color: var(--yellow);
}

.nav__cta {
  display: inline-block;
  background: var(--yellow);
  color: var(--black) !important;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem !important;
  text-align: center;
  margin-top: var(--space-sm);
  transition: transform var(--transition), box-shadow var(--transition) !important;
}

.nav__cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(245, 197, 24, 0.3);
  color: var(--black) !important;
}

/* ═══════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: var(--space-3xl) var(--space-md) var(--space-xl);
  overflow: hidden;
  background: radial-gradient(ellipse at 30% 50%, rgba(245, 197, 24, 0.06) 0%, transparent 60%),
              var(--black);
}

.hero__bg-text {
  position: absolute;
  font-family: var(--font-display);
  font-size: clamp(15rem, 40vw, 45rem);
  color: rgba(245, 197, 24, 0.03);
  font-weight: 400;
  line-height: 1;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  user-select: none;
  pointer-events: none;
}

.hero__content {
  text-align: center;
  max-width: 800px;
  position: relative;
  z-index: 1;
}

.hero__label {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--yellow);
  margin-bottom: var(--space-md);
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(3rem, 10vw, 7rem);
  line-height: 1.05;
  color: var(--white);
  margin-bottom: var(--space-md);
}

.hero__title-line {
  display: block;
}

.hero__title-line--accent {
  font-style: italic;
}

.hero__dot {
  color: var(--yellow);
}

.hero__subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--gray-400);
  max-width: 580px;
  margin: 0 auto var(--space-lg);
  line-height: 1.8;
}

.hero__actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  align-items: center;
}

.hero__scroll-indicator {
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  color: var(--gray-700);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--gray-700), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.9rem 2rem;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
  text-align: center;
}

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

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(245, 197, 24, 0.35);
}

.btn--ghost {
  background: transparent;
  color: var(--gray-200);
  border: 1px solid var(--gray-700);
}

.btn--ghost:hover {
  border-color: var(--yellow);
  color: var(--yellow);
}

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

.btn--outline:hover {
  background: var(--yellow);
  color: var(--black);
}

.btn--full {
  width: 100%;
}

/* ═══════════════════════════════════════════
   ABOUT
   ═══════════════════════════════════════════ */
.about {
  padding: var(--space-3xl) 0;
  background: var(--black-soft);
  position: relative;
}

.about__grid {
  display: grid;
  gap: var(--space-xl);
}

.about__photo {
  max-width: 320px;
  margin: 0 auto;
}

.about__photo img {
  width: 100%;
  aspect-ratio: 1 / 1;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 2px solid var(--gray-800);
  transition: border-color var(--transition);
}

.about__photo img:hover {
  border-color: var(--yellow);
}

.about__headline {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 400;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: var(--space-lg);
}

.about__text p {
  margin-bottom: var(--space-md);
  font-size: 1.05rem;
  color: var(--gray-200);
}

.about__text strong {
  color: var(--yellow);
  font-weight: 600;
}

.about__strengths {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.strength {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm);
  background: var(--gray-900);
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-800);
  transition: border-color var(--transition);
}

.strength:hover {
  border-color: var(--yellow);
}

.strength__icon {
  color: var(--yellow);
  font-size: 1rem;
}

.strength__text {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--white);
}

/* ═══════════════════════════════════════════
   MARQUEE
   ═══════════════════════════════════════════ */
.marquee {
  padding: var(--space-md) 0;
  overflow: hidden;
  border-top: 1px solid var(--gray-800);
  border-bottom: 1px solid var(--gray-800);
  background: var(--black);
}

.marquee__track {
  display: flex;
  gap: var(--space-lg);
  animation: marquee 25s linear infinite;
  white-space: nowrap;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  color: var(--gray-700);
  font-style: italic;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ═══════════════════════════════════════════
   OFFERS
   ═══════════════════════════════════════════ */
.offers {
  padding: var(--space-3xl) 0;
  background: var(--black);
}

.offers__headline {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 400;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: var(--space-xl);
}

.offers__grid {
  display: grid;
  gap: var(--space-lg);
}

.offer-card {
  background: var(--gray-900);
  border: 1px solid var(--gray-800);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  position: relative;
  transition: transform var(--transition), border-color var(--transition);
}

.offer-card:hover {
  transform: translateY(-4px);
  border-color: var(--gray-700);
}

.offer-card--featured {
  border-color: var(--yellow);
  background: linear-gradient(135deg, var(--gray-900) 0%, rgba(245, 197, 24, 0.05) 100%);
}

.offer-card--featured:hover {
  border-color: var(--yellow-light);
  box-shadow: 0 20px 60px rgba(245, 197, 24, 0.1);
}

.offer-card__badge {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: var(--yellow);
  color: var(--black);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 0.3rem 0.9rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
}

.offer-card__icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
}

.offer-card__title {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 400;
  color: var(--white);
  margin-bottom: var(--space-sm);
}

.offer-card__desc {
  color: var(--gray-400);
  margin-bottom: var(--space-md);
  line-height: 1.7;
}

.offer-card__features {
  list-style: none;
  margin-bottom: var(--space-lg);
}

.offer-card__features li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--gray-800);
  font-size: 0.95rem;
  color: var(--gray-200);
  position: relative;
  padding-left: 1.5rem;
}

.offer-card__features li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--yellow);
  font-weight: 600;
}

/* ═══════════════════════════════════════════
   VISION
   ═══════════════════════════════════════════ */
.vision {
  padding: var(--space-3xl) 0;
  background: linear-gradient(160deg, var(--gray-900) 0%, var(--black) 50%, rgba(245, 197, 24, 0.08) 100%);
  position: relative;
  overflow: hidden;
}

.vision::before {
  content: '"';
  position: absolute;
  top: -2rem;
  left: 5%;
  font-family: var(--font-display);
  font-size: clamp(10rem, 25vw, 20rem);
  color: rgba(245, 197, 24, 0.04);
  line-height: 1;
  pointer-events: none;
}

.vision__inner {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.vision__quote {
  margin-bottom: var(--space-lg);
}

.vision__quote p {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  font-weight: 400;
  color: var(--white);
  line-height: 1.3;
  font-style: italic;
}

.vision__text {
  font-size: 1.1rem;
  color: var(--gray-400);
  line-height: 1.8;
  max-width: 600px;
  margin: 0 auto;
}

/* ═══════════════════════════════════════════
   PERSONAL
   ═══════════════════════════════════════════ */
.personal {
  padding: var(--space-3xl) 0;
  background: var(--black-soft);
}

.personal__headline {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 400;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: var(--space-xl);
}

.personal__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-sm);
}

.personal__card {
  background: var(--gray-900);
  border: 1px solid var(--gray-800);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: border-color var(--transition), transform var(--transition);
}

.personal__card:hover {
  border-color: var(--yellow);
  transform: translateY(-3px);
}

.personal__card-icon {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}

.personal__card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--white);
  margin-bottom: 0.4rem;
}

.personal__card p {
  font-size: 0.9rem;
  color: var(--gray-400);
  line-height: 1.6;
}

/* ═══════════════════════════════════════════
   CONTACT
   ═══════════════════════════════════════════ */
.contact {
  padding: var(--space-3xl) 0;
  background: var(--black);
}

.contact__grid {
  display: grid;
  gap: var(--space-xl);
}

.contact__headline {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 400;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

.contact__text {
  color: var(--gray-400);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.contact__channels {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.contact__channel {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: var(--space-sm);
  background: var(--gray-900);
  border: 1px solid var(--gray-800);
  border-radius: var(--radius-md);
  transition: border-color var(--transition);
}

.contact__channel:hover {
  border-color: var(--yellow);
}

.contact__channel-label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--yellow);
}

.contact__channel-value {
  font-size: 0.95rem;
  color: var(--white);
}

/* --- Form --- */
.contact__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--gray-400);
}

.form-group input,
.form-group select,
.form-group textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.85rem 1rem;
  background: var(--gray-900);
  border: 1px solid var(--gray-800);
  border-radius: var(--radius-sm);
  color: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--yellow);
  box-shadow: 0 0 0 3px var(--yellow-glow);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--gray-700);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23888' stroke-width='2' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* ═══════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════ */
.footer {
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--gray-800);
  background: var(--black);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: center;
  text-align: center;
}

.footer__brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
}

.footer__logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--white);
}

.footer__tagline {
  font-size: 0.85rem;
  color: var(--gray-400);
}

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

.footer__links a {
  font-size: 0.85rem;
  color: var(--gray-400);
  transition: color var(--transition);
}

.footer__links a:hover {
  color: var(--yellow);
}

.footer__social {
  display: flex;
  gap: var(--space-sm);
}

.footer__social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gray-900);
  border: 1px solid var(--gray-800);
  color: var(--gray-400);
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}

.footer__social a:hover {
  border-color: var(--yellow);
  color: var(--yellow);
  background: var(--yellow-glow);
}

.footer__social svg {
  width: 18px;
  height: 18px;
}

/* ═══════════════════════════════════════════
   RESPONSIVE — Tablet (min 640px)
   ═══════════════════════════════════════════ */
@media (min-width: 640px) {
  .hero__actions {
    flex-direction: row;
    justify-content: center;
  }

  .about__strengths {
    grid-template-columns: repeat(4, 1fr);
  }

  .offers__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .personal__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .contact__grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }

  .footer__brand {
    align-items: flex-start;
  }
}

/* ═══════════════════════════════════════════
   RESPONSIVE — Desktop (min 960px)
   ═══════════════════════════════════════════ */
@media (min-width: 960px) {
  .nav__toggle {
    display: none;
  }

  .nav__links {
    position: static;
    width: auto;
    height: auto;
    background: none;
    flex-direction: row;
    padding: 0;
    border: none;
    align-items: center;
    gap: var(--space-lg);
  }

  .nav__links a {
    font-size: 0.9rem;
  }

  .nav__cta {
    margin-top: 0;
  }

  .about__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr);
    gap: var(--space-xl);
    align-items: start;
  }

  .about__photo {
    max-width: 100%;
    position: sticky;
    top: 6rem;
  }

  .hero__subtitle {
    font-size: 1.2rem;
  }
}

/* ═══════════════════════════════════════════
   LEGAL PAGES (Impressum, Datenschutz)
   ═══════════════════════════════════════════ */
.legal {
  padding: 8rem 0 var(--space-3xl);
  background: var(--black);
  min-height: 80vh;
}

.legal__title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 400;
  color: var(--white);
  margin-bottom: var(--space-xl);
  line-height: 1.1;
}

.legal__content {
  max-width: 720px;
}

.legal__content h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--white);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--gray-800);
}

.legal__content h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--gray-200);
  margin-top: var(--space-md);
  margin-bottom: 0.5rem;
}

.legal__content p {
  color: var(--gray-400);
  margin-bottom: var(--space-sm);
  line-height: 1.8;
}

.legal__content a {
  color: var(--yellow);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.legal__content a:hover {
  color: var(--yellow-light);
}