/* ==========================================================================
   DanZel LLC – Stylesheet
   Clean CSS3 rebuild of the original SitesGPT/Tailwind design.
   ========================================================================== */

/* ---------- 1. Design tokens ---------- */
:root {
  --c-gray-50:  #f9fafb;
  --c-gray-100: #f3f4f6;
  --c-gray-300: #d1d5db;
  --c-gray-400: #9ca3af;
  --c-gray-700: #374151;
  --c-gray-800: #1f2937;
  --c-gray-900: #111827;
  --c-gray-950: #030712;
  --c-white:    #ffffff;
  --c-black:    #000000;
  --c-accent:   #9ca2a5;   /* Brand-/Button-Farbe der Originalseite */
  --c-accent-hover: #858b8e;
  --c-required: #dc2626;
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji",
               "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  --container: 80rem;          /* 1280px */
  --gutter: 1.5rem;
  --radius-sm: 0.375rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  --header-h: 5.25rem;
}

/* ---------- 2. Reset / base ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--c-gray-900);
  background-color: var(--c-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
picture,
video,
svg,
iframe { display: block; max-width: 100%; }

img { height: auto; }

input,
textarea,
button { font: inherit; color: inherit; }

a { color: inherit; text-decoration: none; }

ul { list-style: none; padding: 0; }

h1, h2, h3 { line-height: 1.2; }

:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 2px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  z-index: 100;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--c-white);
  color: var(--c-gray-900);
  font-weight: 600;
}
.skip-link:focus { top: 1rem; }

/* ---------- 3. Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

@media (min-width: 1024px) {
  .container { padding-inline: 2rem; }
}

.section { padding-block: 4rem; background-color: var(--c-white); }
.section--light { background-color: var(--c-gray-100); }
.section--dark  { background-color: var(--c-gray-900); }

@media (min-width: 640px) {
  .section { padding-block: 6rem; }
}

.section-head {
  max-width: 42rem;
  margin-inline: auto;
  text-align: center;
}
.section-head--narrow { max-width: 36rem; }

.heading {
  font-size: 1.875rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--c-gray-900);
}
.heading--light { color: var(--c-gray-100); }

@media (min-width: 640px) {
  .heading { font-size: 2.25rem; line-height: 1.11; }
}

.lead {
  margin-top: 0.5rem;
  line-height: 2rem;
  color: var(--c-gray-700);
}

.body-text {
  font-size: 1rem;
  line-height: 1.75rem;
  color: var(--c-gray-700);
}

.eyebrow {
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 2rem;
  letter-spacing: -0.025em;
  color: var(--c-accent);
}
.eyebrow + .heading { margin-top: 0.5rem; }

/* ---------- 4. Buttons ---------- */
.btn {
  display: inline-block;
  padding: 0.625rem 0.875rem;
  border: 0;
  border-radius: var(--radius-sm);
  background-color: var(--c-accent);
  color: var(--c-white);
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.25rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: background-color 0.2s ease;
}
.btn:hover { background-color: var(--c-accent-hover); }
.btn--block { display: block; width: 100%; }

.icon { width: 1.5rem; height: 1.5rem; }

/* ---------- 5. Header / navigation ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--c-gray-900);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3rem;
  padding-block: 1.5rem;
}

.brand {
  margin-right: auto;
  font-size: 1rem;
  font-weight: 600;
  color: var(--c-gray-100);
}

.nav__links {
  display: none;
  gap: 3rem;
}
.nav__links a {
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.5rem;
  color: var(--c-gray-100);
  transition: color 0.2s ease;
}
.nav__links a:hover { color: var(--c-gray-300); }

@media (min-width: 1024px) {
  .nav__links { display: flex; }
}

.nav__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: -0.625rem;
  padding: 0.625rem;
  border: 0;
  border-radius: var(--radius-sm);
  background: none;
  color: var(--c-gray-100);
  cursor: pointer;
}

/* Mobile menu (slide-in panel) */
.mobile-menu__backdrop {
  position: fixed;
  inset: 0;
  z-index: 60;
  background-color: rgb(0 0 0 / 0.3);
}

.mobile-menu__panel {
  position: fixed;
  inset-block: 0;
  right: 0;
  z-index: 61;
  width: 100%;
  overflow-y: auto;
  padding: 1.5rem;
  background-color: var(--c-white);
  animation: slide-in 0.2s ease-out;
}

@media (min-width: 640px) {
  .mobile-menu__panel {
    max-width: 24rem;
    box-shadow: 0 0 0 1px rgb(17 24 39 / 0.1);
  }
}

@keyframes slide-in {
  from { transform: translateX(100%); }
  to   { transform: translateX(0); }
}

.mobile-menu__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mobile-menu__brand { font-weight: 600; color: var(--c-gray-900); }

.mobile-menu__close {
  margin: -0.625rem;
  padding: 0.625rem;
  border: 0;
  border-radius: var(--radius-sm);
  background: none;
  color: var(--c-gray-700);
  cursor: pointer;
}

.mobile-menu__links {
  margin-top: 1.5rem;
  display: grid;
  gap: 0.5rem;
}
.mobile-menu__links a {
  display: block;
  margin-inline: -0.75rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-lg);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.75rem;
  color: var(--c-gray-900);
}
.mobile-menu__links a:hover { background-color: var(--c-gray-50); }

/* ---------- 6. Hero ---------- */
.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-top: 3.5rem;
  background-color: var(--c-black);
}

.hero__video {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-color: var(--c-black);
  opacity: 0.3;
}

@media (min-width: 1024px) {
  .hero__overlay {
    width: 75%;
    background: linear-gradient(to right, var(--c-black) 50%, transparent);
  }
}

.hero__inner {
  max-width: 42rem;
  padding: 8rem 2rem;
}

@media (min-width: 640px) {
  .hero__inner { padding-block: 12rem; }
}

@media (min-width: 1024px) {
  .hero__inner { max-width: var(--container); padding-inline: 4rem; }
  .hero__content { width: 66.666%; }
}

@media (min-width: 1280px) {
  .hero__content { width: 50%; }
}

.hero__title {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.11;
  color: var(--c-white);
}

@media (min-width: 640px) {
  .hero__title { font-size: 3.75rem; line-height: 1; }
}

.hero__text {
  margin-top: 1.5rem;
  line-height: 2rem;
  color: var(--c-gray-100);
}

@media (min-width: 1024px) {
  .hero__text { font-size: 1.125rem; }
}

.hero__actions { margin-top: 2.5rem; }

/* ---------- 7. About ---------- */
.about {
  display: flex;
  flex-direction: column;
  gap: 4rem;
}

.about__text {
  max-width: 36rem;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.about__text .heading { margin-bottom: 2rem; }

.about__media { order: -1; position: relative; }

.about__img {
  margin-inline: auto;
  width: 100%;
  max-width: 45rem;
  aspect-ratio: 720 / 464;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
}

@media (min-width: 1024px) {
  .about { flex-direction: row; gap: 7rem; }
  .about__text { width: 66.666%; max-width: none; }
  .about__media { width: 33.333%; padding-bottom: 2rem; }
  .about__img {
    position: sticky;
    top: calc(var(--header-h) + 1rem);
    aspect-ratio: 1 / 1;
  }
}

/* ---------- 8. Services ---------- */
.cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  max-width: 42rem;
  margin: 2.5rem auto 0;
}

@media (min-width: 1024px) {
  .cards { grid-template-columns: repeat(3, 1fr); max-width: none; }
}

.card {
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  border: 2px solid var(--c-white);
  border-radius: var(--radius-xl);
}

.card__img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius-xl);
  box-shadow: inset 0 0 0 1px rgb(17 24 39 / 0.1);
}

@media (min-width: 640px)  { .card__img { aspect-ratio: 2 / 1; } }

@media (min-width: 1024px) { .card__img { aspect-ratio: 3 / 2; } }

.card__title {
  margin-top: 2.75rem;
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.5rem;
  color: var(--c-gray-900);
}

.card__text {
  margin-top: 1.25rem;
  line-height: 1.5rem;
  color: var(--c-gray-700);
}

/* ---------- 9. Call to action ---------- */
.cta__inner {
  max-width: 42rem;
  text-align: center;
}

.cta__text {
  max-width: 36rem;
  margin: 1.5rem auto 0;
  line-height: 2rem;
  color: var(--c-gray-300);
}

.cta__actions { margin-top: 2.5rem; }

/* ---------- 10. Testimonials ---------- */
.testimonials {
  display: grid;
  grid-template-columns: 1fr;
  column-gap: 2rem;
  max-width: 42rem;
  margin: 2rem auto 0;
}

@media (min-width: 640px) {
  .testimonials { margin-top: 2.5rem; }
}

@media (min-width: 1024px) {
  .testimonials { grid-template-columns: repeat(3, 1fr); max-width: none; }
}

.testimonial {
  margin-top: 2rem;
  padding: 2rem;
  border-radius: var(--radius-xl);
  background-color: var(--c-gray-50);
  font-size: 0.875rem;
  line-height: 1.5rem;
}

.testimonial__quote { margin: 0; color: var(--c-gray-900); }

.testimonial__author {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 1.5rem;
  font-weight: 600;
  color: var(--c-gray-900);
}

.avatar {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 9999px;
  object-fit: cover;
}

/* ---------- 11. Mission ---------- */
.mission-wrap { padding-block: 4rem; background-color: var(--c-white); }

@media (min-width: 640px) {
  .mission-wrap { padding-block: 6rem; }
}

.mission {
  position: relative;
  background-color: var(--c-gray-900);
  background-image: linear-gradient(to right, var(--c-gray-800), transparent);
}

.mission__inner {
  padding-block: 6rem;
}

@media (min-width: 640px) {
  .mission__inner { padding-block: 8rem; }
}

.mission__media {
  max-width: 28rem;
  margin-inline: auto;
}

@media (min-width: 640px) {
  .mission__media { max-width: 48rem; }
}

.mission__img {
  width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
}

.mission__content {
  max-width: 28rem;
  margin: 3rem auto 0;
}

@media (min-width: 640px) {
  .mission__content { max-width: 42rem; }
}

@media (min-width: 1024px) {
  .mission__inner {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
    padding-block: 0;
  }
  .mission__media {
    max-width: none;
    margin: -2rem 0;
  }
  .mission__img {
    height: 100%;
    aspect-ratio: auto;
  }
  .mission__content {
    max-width: none;
    margin: 0;
    padding: 5rem 0 5rem 2rem;
  }
}

.mission__head {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.mission__quote-icon {
  flex-shrink: 0;
  width: 3rem;
  height: 3rem;
  color: var(--c-gray-100);
  opacity: 0.25;
}

.mission__title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--c-gray-100);
}

@media (min-width: 640px) {
  .mission__title { font-size: 1.875rem; }
}

.mission__text {
  margin-top: 1.5rem;
  line-height: 2rem;
  color: var(--c-gray-100);
}

/* ---------- 12. Location / map ---------- */
.location {
  display: grid;
  grid-template-columns: 1fr;
  align-items: start;
  gap: 4rem 2rem;
  max-width: 42rem;
}

@media (min-width: 640px) {
  .location { row-gap: 6rem; }
}

@media (min-width: 1024px) {
  .location { grid-template-columns: 1fr 1fr; max-width: var(--container); }
  .location__map { padding-right: 1rem; }
  .location__text { max-width: 32rem; }
}

.location__map iframe {
  width: 100%;
  height: 448px;
  border: 0;
  border-radius: var(--radius-2xl);
  background-color: var(--c-gray-100);
  box-shadow: var(--shadow-2xl);
}

@media (min-width: 1024px) {
  .location__map iframe { max-width: 32rem; }
}

.location__text .heading { margin-top: 0.5rem; }
.location__text .body-text {
  max-width: 36rem;
  margin-top: 2rem;
  font-size: 0.875rem;
}

@media (min-width: 640px) {
  .location__text .body-text { font-size: 1rem; }
}

.location__actions { margin-top: 2.5rem; }

/* ---------- 13. Contact form ---------- */
#contact .heading { margin-bottom: 2rem; }

.form {
  max-width: 56rem;
  margin: 4rem auto 0;
}

.form__hp { display: none; }

.form__grid {
  display: flex;
  flex-wrap: wrap;
}

.field {
  width: 100%;
  padding: 0.75rem 1rem;
}

@media (min-width: 640px) {
  .field { width: 50%; }
  .field--full { width: 100%; }
}

.field label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.5rem;
  color: var(--c-gray-900);
}

.req { color: var(--c-required); }

.field input,
.field textarea {
  display: block;
  width: 100%;
  margin-top: 0.5rem;
  padding: 0.5rem 0.875rem;
  border: 0;
  border-radius: var(--radius-sm);
  background-color: var(--c-white);
  color: var(--c-gray-900);
  box-shadow: var(--shadow-sm), inset 0 0 0 1px var(--c-gray-300);
  transition: box-shadow 0.15s ease;
}

.field textarea { resize: vertical; }

.field input:focus,
.field textarea:focus {
  outline: none;
  box-shadow: var(--shadow-sm), inset 0 0 0 2px var(--c-accent);
}

@media (min-width: 640px) {
  .field input,
  .field textarea { font-size: 0.875rem; line-height: 1.5rem; }
}

.form__submit { padding: 0.75rem 1rem; }

/* ---------- 14. Footer ---------- */
.site-footer {
  border-top: 1px solid var(--c-gray-950);
  background-color: var(--c-gray-900);
  padding: 4rem 0 2rem;
  color: var(--c-gray-300);
}

@media (min-width: 640px) {
  .site-footer { padding-top: 6rem; }
}

.footer__about p {
  font-size: 0.875rem;
  line-height: 1.5rem;
}

@media (min-width: 640px) {
  .footer__about p { font-size: 1rem; }
}

.social {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.social a {
  display: block;
  color: var(--c-gray-300);
  transition: color 0.2s ease;
}
.social a:hover { color: var(--c-gray-100); }
.social svg { width: 1.875rem; height: 1.875rem; }

.footer__cols {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 4rem;
}

@media (min-width: 1280px) {
  .footer__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }
  .footer__about { margin-right: 2rem; }
  .footer__cols { margin-top: 0; }
}

.footer__heading {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5rem;
  color: var(--c-gray-100);
}

.footer__list {
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
}

.footer__list a {
  line-height: 1.5rem;
  color: var(--c-gray-300);
  overflow-wrap: anywhere;
  transition: color 0.2s ease;
}
.footer__list a:hover { color: var(--c-gray-100); }

.footer__bottom {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid rgb(17 24 39 / 0.1);
  font-size: 0.75rem;
  line-height: 1.25rem;
}

@media (min-width: 640px)  { .footer__bottom { margin-top: 5rem; } }

@media (min-width: 1024px) { .footer__bottom { margin-top: 6rem; } }

/* ---------- 15. Simple pages (404 / thank-you) ---------- */
.page-message {
  min-height: calc(100vh - var(--header-h) - 20rem);
  display: grid;
  place-items: center;
  text-align: center;
}

.page-message .lead { max-width: 32rem; margin-inline: auto; }
.page-message .btn { margin-top: 2rem; }

/* ---------- 16. Scroll reveal (progressive enhancement) ---------- */
/* JS marks only off-screen elements as pending – without JS all content stays visible. */
.reveal { transition: opacity 0.6s ease, transform 0.6s ease; }

.reveal.is-pending {
  opacity: 0;
  transform: translateY(24px);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .reveal.is-pending { opacity: 1; transform: none; transition: none; }
  .mobile-menu__panel { animation: none; }
}