/* innocube – statische Seite (Nachbau des Jigsaw/Tailwind-Layouts) */

:root {
  --blue-600: #3182ce;
  --blue-700: #2b6cb0;
  --blue-800: #2c5282;
  --blue-900: #2a4365;
  --red-700: #c53030;
  --yellow-700: #b7791f;
  --green-700: #2f855a;
  --gray-100: #f7fafc;
  --gray-200: #edf2f7;
  --gray-300: #e2e8f0;
  --gray-400: #cbd5e0;
  --gray-500: #a0aec0;
  --gray-700: #4a5568;
  --gray-800: #2d3748;
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, .1), 0 1px 2px 0 rgba(0, 0, 0, .06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);
  --font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
}

/* ---------- Basis ---------- */

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

html { font-family: var(--font); line-height: 1.5; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--gray-200);
  color: var(--gray-800);
  font-size: 17px;
  line-height: 1.6;
}

img { display: block; max-width: 100%; height: auto; border: 0; }

a { color: var(--blue-600); font-weight: 600; text-decoration: none; }
a:hover { color: var(--blue-800); }

p { margin: 1.5rem 0; }
strong { font-weight: 700; }

h1, h2, h3, h4 {
  line-height: 1.25;
  margin: 2rem 0 1rem;
  color: var(--blue-800);
}
h1:first-child, h2:first-child, h3:first-child, h4:first-child { margin-top: 0; }
h1 { font-size: 2.625rem; font-weight: 800; }
h2 { font-size: 2.125rem; font-weight: 700; }
h3 { font-size: 1.75rem; font-weight: 700; }
h4 { font-size: 1.5rem; font-weight: 700; }

.container { width: 100%; margin: 0 auto; }

/* ---------- Header ---------- */

.site-header {
  display: flex;
  align-items: center;
  height: 6rem;
  padding: 1rem 0;
  background: #fff;
  border-bottom: 1px solid var(--gray-300);
  box-shadow: var(--shadow);
}
.site-header .container {
  display: flex;
  align-items: center;
  max-width: 88rem;
  padding: 0 1rem;
}
.logo { display: inline-flex; align-items: center; }
.logo img { width: 10rem; }

.header-right { display: flex; flex: 1; justify-content: flex-end; align-items: center; }

.main-nav { display: none; align-items: center; justify-content: flex-end; font-size: 1.25rem; }
.main-nav a {
  margin-left: 2rem;
  transition: transform .15s ease;
}
.main-nav a:hover { transform: scale(1.05); color: var(--gray-700); }
.main-nav a.active,
.main-nav a.active:hover { background: var(--c); color: var(--gray-100); padding: 1rem; }

/* Jeder Menüpunkt hat seine eigene Farbe, aktiv als Hintergrund */
.c-home { --c: var(--gray-700); color: #000; }
.c-red { --c: var(--red-700); color: var(--c); }
.c-yellow { --c: var(--yellow-700); color: var(--c); }
.c-green { --c: var(--green-700); color: var(--c); }
.c-blue { --c: var(--blue-700); color: var(--c); }

.menu-toggle {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 2.5rem;
  padding: 0 1.25rem;
  border: 1px solid var(--blue-900);
  border-radius: 9999px;
  background: var(--blue-800);
  color: #fff;
  font: inherit;
  cursor: pointer;
}
.menu-toggle svg { width: 1rem; height: 2.25rem; fill: currentColor; }
.menu-toggle span { padding-left: .5rem; }
.menu-toggle .icon-close { display: none; }
.menu-toggle[aria-expanded="true"] .icon-open { display: none; }
.menu-toggle[aria-expanded="true"] .icon-close { display: block; }

.mobile-nav {
  display: none;
  background: var(--gray-200);
  padding: 1.5rem .5rem .5rem;
  box-shadow: var(--shadow);
}
.mobile-nav.open { display: block; }
.mobile-nav ul { list-style: none; margin: 0; padding: 0; }
.mobile-nav li { padding-left: 1rem; }
.mobile-nav a { display: block; margin: 0 0 1rem; font-size: .925rem; }
.mobile-nav a:hover { color: #4299e1; }
.mobile-nav a.active { color: #718096; }

@media (min-width: 640px) {
  .logo img { width: 16rem; }
}

@media (min-width: 1024px) {
  .site-header .container { padding: 0 2rem; }
  .main-nav { display: flex; }
  .menu-toggle, .mobile-nav, .mobile-nav.open { display: none; }
}

/* ---------- Inhalt ---------- */

main {
  flex: 1 1 auto;
  width: 100%;
  max-width: 80rem;
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

/* Spalten */
.row { display: flex; flex-wrap: wrap; margin: 0 -1rem; }
.col { width: 100%; padding: 0 1rem; }
@media (min-width: 768px) {
  .col-md-third { width: 33.3333%; }
}
@media (min-width: 1024px) {
  .col-lg-quarter { width: 25%; }
}

/* Startseite: Kompetenzen */
.skills { padding-bottom: 1rem; border-bottom: 2px solid var(--gray-300); }
.skills h3 { margin-bottom: 0; }
.skills p { margin: .25rem 0 0; }
.skills p.last { margin-bottom: 1.5rem; }
.skill-logo { width: 50%; margin: 0 auto; }
.browsers { display: flex; gap: 1rem; padding: 0 .5rem; }
.browsers img { width: calc((100% - 5rem) / 6); }

/* Schräges blaues Band hinter Referenzen / Formular */
.band {
  display: none;
  position: absolute;
  z-index: 10;
  left: 0;
  right: 0;
  margin-left: -1rem;
  height: 20rem;
  background: var(--blue-800);
  transform: skewX(-10deg);
}
.band.offset { margin-top: -2rem; }
.band.tall { height: 28rem; }
.on-band { position: relative; z-index: 20; }

@media (min-width: 1024px) {
  .band { display: block; }
  .on-band > h2, .on-band > p, .on-band h4 { color: #fff; }
}

/* Referenz-Karten */
.ref-card { display: flex; flex-direction: column; transition: transform .15s ease; }
.ref-card:hover { transform: scale(1.01); }
.ref-card h4 { margin-top: 0; }
.ref-card img { box-shadow: var(--shadow-lg); }
.ref-card .body {
  margin-bottom: 2rem;
  padding: 0 1rem;
  background: #fff;
  box-shadow: var(--shadow-lg);
}
.ref-card .body.text { padding: 1rem; }
.ref-card ul { margin: 1rem 0; padding: 0; list-style: disc inside; }

/* Team */
.team { display: flex; flex-wrap: wrap; align-items: flex-start; }
.member { flex: 1 1 0; min-width: 16rem; padding: 0 1rem 2rem; text-align: center; }
.member > div { background: var(--gray-100); }
.member img { width: 100%; }
.member .info { padding: .5rem; }
.member h3 { margin: 0 0 1rem; }

/* Kontaktformular */
.contact-form { margin-bottom: 3rem; color: var(--blue-800); }
.contact-form fieldset { border: 0; margin: 0; padding: 0; }
.contact-form .fields { display: flex; flex-wrap: wrap; margin: 0 -.75rem 1.5rem; padding-top: 1.5rem; }
.contact-form .field { width: 100%; padding: 0 .75rem; }
.contact-form .field + .field { margin-top: 1.5rem; }
.contact-form .field.full { padding: 0; margin-bottom: 3rem; }
.contact-form label { display: block; margin-bottom: .5rem; font-size: 1.125rem; font-weight: 600; color: var(--blue-800); }
.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea {
  display: block;
  width: 100%;
  margin-bottom: .5rem;
  padding: .75rem 1rem;
  border: 1px solid var(--gray-300);
  border-radius: .5rem;
  box-shadow: var(--shadow);
  outline: none;
  background: #fff;
  color: var(--blue-800);
  font: inherit;
}
.contact-form ::placeholder { color: var(--gray-500); }
.contact-form input:focus,
.contact-form textarea:focus { border-color: var(--blue-600); }
.contact-form textarea { resize: vertical; }
.contact-form .actions { display: flex; justify-content: flex-end; }
.contact-form .honeypot { position: fixed; top: -200px; }
.btn {
  display: block;
  padding: .75rem 1.5rem;
  border: 0;
  border-radius: .5rem;
  box-shadow: var(--shadow);
  background: var(--blue-600);
  color: #fff;
  font: inherit;
  font-size: .875rem;
  font-weight: 600;
  letter-spacing: .025em;
  text-transform: uppercase;
  cursor: pointer;
}
.btn:hover { background: var(--blue-700); }
.form-status { margin: 1rem 0 0; font-weight: 600; }

@media (min-width: 768px) {
  .contact-form .field { width: 50%; }
  .contact-form .field + .field { margin-top: 0; }
  .contact-form .field.full { width: 100%; }
}
@media (min-width: 1024px) {
  .contact-form, .contact-form label { color: #fff; }
}

/* ---------- Footer ---------- */

.site-footer {
  margin-top: 3rem;
  padding: 1rem;
  background: #fff;
  text-align: center;
  font-size: .875rem;
}
.site-footer ul { display: flex; flex-direction: column; justify-content: center; list-style: none; margin: 0; padding: 0; }
@media (min-width: 768px) {
  .site-footer ul { flex-direction: row; gap: .5rem; }
}

#thank-you-message h2 { color: inherit; padding-top: 2rem; }