/* ============================================================
   pörtner consulting – OpenProject Website
   styles.css – Version 2.0
   ============================================================ */

/* ---- Custom Properties ------------------------------------ */
:root {
  --clr-primary:      #1e3a5f;   /* Dunkles Marineblau */
  --clr-primary-dark: #0f2540;
  --clr-accent:       #0077cc;   /* Mittleres Blau */
  --clr-accent-hover: #005fa3;
  --clr-cta:          #e05c00;   /* Orange CTA */
  --clr-cta-hover:    #b84900;
  --clr-text:         #1f2d3d;
  --clr-text-muted:   #5a6a7a;
  --clr-bg:           #ffffff;
  --clr-bg-soft:      #f4f7fb;
  --clr-bg-gray:      #eef1f5;
  --clr-border:       #d4dce6;
  --clr-white:        #ffffff;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --radius:    6px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,.10), 0 2px 6px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 30px rgba(0,0,0,.12);

  --max-w: 1180px;
  --gap:   2rem;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--clr-text);
  background: var(--clr-bg);
}

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

a { color: var(--clr-accent); text-decoration: none; }
a:hover { color: var(--clr-accent-hover); text-decoration: underline; }

ul, ol { padding-left: 1.5rem; }
li { margin-bottom: .35rem; }

/* ---- Typography ------------------------------------------ */
h1, h2, h3, h4, h5 {
  font-family: var(--font-sans);
  color: var(--clr-primary);
  line-height: 1.25;
  font-weight: 700;
}
h1 { font-size: clamp(1.75rem, 4vw, 2.6rem); margin-bottom: 1rem; }
h2 { font-size: clamp(1.4rem, 3vw, 2rem);    margin-bottom: .75rem; margin-top: 2.5rem; }
h3 { font-size: clamp(1.1rem, 2.5vw, 1.4rem); margin-bottom: .5rem; margin-top: 1.5rem; }
h4 { font-size: 1.1rem; margin-bottom: .4rem; }

p { margin-bottom: 1rem; }

/* ---- Layout helpers -------------------------------------- */
.container {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.section { padding-block: 4rem; }
.section--soft { background: var(--clr-bg-soft); }
.section--gray { background: var(--clr-bg-gray); }
.section--dark {
  background: var(--clr-primary);
  color: var(--clr-white);
}
.section--dark h2,
.section--dark h3 { color: var(--clr-white); }
.section--dark p   { color: #c8d8ea; }

.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--gap); }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: var(--gap); }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.5rem; }

.text-center { text-align: center; }
.mt-sm { margin-top: 1rem; }
.mt-md { margin-top: 2rem; }
.mt-lg { margin-top: 3rem; }

/* ---- Buttons --------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.6rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: .95rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background .2s, color .2s, border-color .2s, box-shadow .2s;
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; }

.btn--primary {
  background: var(--clr-cta);
  color: var(--clr-white);
  border-color: var(--clr-cta);
}
.btn--primary:hover {
  background: var(--clr-cta-hover);
  border-color: var(--clr-cta-hover);
  color: var(--clr-white);
  box-shadow: var(--shadow-md);
}

.btn--secondary {
  background: var(--clr-white);
  color: var(--clr-primary);
  border-color: var(--clr-border);
}
.btn--secondary:hover {
  background: var(--clr-bg-soft);
  border-color: var(--clr-accent);
  color: var(--clr-accent);
}

.btn--outline-white {
  background: transparent;
  color: var(--clr-white);
  border-color: rgba(255,255,255,.6);
}
.btn--outline-white:hover {
  background: rgba(255,255,255,.15);
  color: var(--clr-white);
  border-color: var(--clr-white);
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  align-items: center;
}

/* ---- Skip Link ------------------------------------------- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--clr-primary);
  color: #fff;
  padding: .5rem 1rem;
  border-radius: 0 0 var(--radius) var(--radius);
  z-index: 9999;
  font-weight: 700;
}
.skip-link:focus { top: 0; }

/* ---- Header & Navigation --------------------------------- */
.site-header {
  background: var(--clr-white);
  border-bottom: 1px solid var(--clr-border);
  position: sticky;
  top: 0;
  z-index: 200;
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 1rem;
}

/* Logo */
.site-logo {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  text-decoration: none;
  flex-shrink: 0;
}
.site-logo__name {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--clr-primary);
  letter-spacing: -.02em;
}
.site-logo__tagline {
  font-size: .7rem;
  color: var(--clr-text-muted);
  letter-spacing: .04em;
  text-transform: uppercase;
}
.site-logo:hover { text-decoration: none; }

/* Main Nav */
.main-nav { display: flex; align-items: center; gap: 0; }
.main-nav__list {
  display: flex;
  list-style: none;
  padding: 0;
  margin: 0;
  align-items: center;
  gap: 0;
}
.main-nav__item { position: relative; }

.main-nav__link {
  display: block;
  padding: .5rem .85rem;
  font-size: .9rem;
  font-weight: 500;
  color: var(--clr-text);
  border-radius: var(--radius);
  transition: color .15s, background .15s;
  white-space: nowrap;
}
.main-nav__link:hover,
.main-nav__link[aria-current="page"] {
  color: var(--clr-accent);
  background: var(--clr-bg-soft);
  text-decoration: none;
}

/* Dropdown */
.main-nav__item--has-dropdown { position: relative; }
.main-nav__item--has-dropdown > .main-nav__link::after {
  content: " ▾";
  font-size: .7rem;
  opacity: .6;
}

.dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  min-width: 230px;
  padding: .5rem 0;
  z-index: 300;
}
.main-nav__item--has-dropdown:hover .dropdown,
.main-nav__item--has-dropdown:focus-within .dropdown { display: block; }

.dropdown__list { list-style: none; padding: 0; margin: 0; }
.dropdown__link {
  display: block;
  padding: .5rem 1.1rem;
  font-size: .875rem;
  color: var(--clr-text);
  transition: background .15s, color .15s;
}
.dropdown__link:hover {
  background: var(--clr-bg-soft);
  color: var(--clr-accent);
  text-decoration: none;
}

/* CTA in nav */
.nav-cta {
  background: var(--clr-cta) !important;
  color: var(--clr-white) !important;
  border-radius: var(--radius) !important;
  padding: .5rem 1.1rem !important;
  font-weight: 700 !important;
  margin-left: .5rem;
}
.nav-cta:hover {
  background: var(--clr-cta-hover) !important;
  color: var(--clr-white) !important;
  text-decoration: none !important;
}

/* Mobile toggle */
.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: .45rem .65rem;
  cursor: pointer;
  color: var(--clr-primary);
  font-size: 1.3rem;
  line-height: 1;
}
.menu-toggle:focus-visible { outline: 2px solid var(--clr-accent); }

/* ---- Breadcrumbs ----------------------------------------- */
.breadcrumbs {
  padding: .75rem 0;
  font-size: .825rem;
  color: var(--clr-text-muted);
  border-bottom: 1px solid var(--clr-border);
}
.breadcrumbs a { color: var(--clr-text-muted); }
.breadcrumbs a:hover { color: var(--clr-accent); }
.breadcrumbs span { margin-inline: .4rem; }

/* ---- Hero ------------------------------------------------ */
.hero {
  background: linear-gradient(135deg, var(--clr-primary-dark) 0%, var(--clr-primary) 60%, #1a4a7a 100%);
  color: var(--clr-white);
  padding-block: 5rem 4.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero__content { position: relative; z-index: 1; }

.hero h1 {
  color: var(--clr-white);
  font-size: clamp(1.9rem, 5vw, 3rem);
  max-width: 820px;
  margin-inline: auto;
  margin-bottom: 1.25rem;
}
.hero__subtitle {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: #c8d8ea;
  max-width: 680px;
  margin-inline: auto;
  margin-bottom: 2rem;
}
.hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  justify-content: center;
  margin-top: 2rem;
}
.hero__badge {
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.25);
  color: #e0eaf5;
  padding: .3rem .85rem;
  border-radius: 999px;
  font-size: .8rem;
  font-weight: 500;
}

/* ---- Cards ----------------------------------------------- */
.card {
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .2s, transform .2s;
  display: flex;
  flex-direction: column;
}
.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.card h3 { margin-top: 0; color: var(--clr-primary); }
.card p  { flex: 1; color: var(--clr-text-muted); font-size: .95rem; }
.card .card__link {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  font-size: .875rem;
  font-weight: 600;
  color: var(--clr-accent);
  margin-top: 1rem;
}
.card .card__link::after { content: " →"; }
.card .card__link:hover { color: var(--clr-accent-hover); text-decoration: none; }

.card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  background: var(--clr-bg-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  font-size: 1.4rem;
}

/* ---- Process steps --------------------------------------- */
.steps { counter-reset: step; display: grid; gap: 1.5rem; }
.step {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  padding: 1.25rem 1.5rem;
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.step__num {
  counter-increment: step;
  min-width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--clr-primary);
  color: #fff;
  font-weight: 700;
  font-size: .9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.step__num::before { content: counter(step); }
.step__body h4 { margin-top: 0; }
.step__body p  { margin-bottom: 0; font-size: .9rem; color: var(--clr-text-muted); }

/* ---- CTA Banner ------------------------------------------ */
.cta-banner {
  background: linear-gradient(135deg, var(--clr-primary) 0%, #1a4a7a 100%);
  color: var(--clr-white);
  padding-block: 3.5rem;
  text-align: center;
}
.cta-banner h2 { color: var(--clr-white); margin-top: 0; }
.cta-banner p  { color: #c8d8ea; max-width: 600px; margin-inline: auto; margin-bottom: 1.75rem; }

/* ---- FAQ Accordion --------------------------------------- */
.faq { max-width: 820px; margin-inline: auto; }
.faq__item { border-bottom: 1px solid var(--clr-border); }
.faq__question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 1.1rem 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--clr-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  transition: color .15s;
}
.faq__question:hover { color: var(--clr-accent); }
.faq__question:focus-visible { outline: 2px solid var(--clr-accent); outline-offset: 2px; }
.faq__icon {
  font-size: 1.2rem;
  flex-shrink: 0;
  transition: transform .25s;
  color: var(--clr-accent);
}
.faq__item.is-open .faq__icon { transform: rotate(45deg); }
.faq__answer {
  display: none;
  padding-bottom: 1.1rem;
  color: var(--clr-text-muted);
  font-size: .95rem;
  line-height: 1.7;
}
.faq__item.is-open .faq__answer { display: block; }

/* ---- Forms ----------------------------------------------- */
.form-wrap {
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  max-width: 680px;
  margin-inline: auto;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { margin-bottom: 1.1rem; }
.form-group label {
  display: block;
  font-size: .875rem;
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: .35rem;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: .65rem .9rem;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: .95rem;
  color: var(--clr-text);
  background: var(--clr-bg);
  transition: border-color .15s, box-shadow .15s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px rgba(0,119,204,.15);
}
.form-group textarea { resize: vertical; min-height: 130px; }
.form-group.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: .6rem;
}
.form-group.checkbox-group input[type="checkbox"] {
  width: auto;
  margin-top: .25rem;
  flex-shrink: 0;
}
.form-group.checkbox-group label { font-weight: 400; font-size: .875rem; }

/* ---- Table ----------------------------------------------- */
.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: .9rem;
}
th, td {
  text-align: left;
  padding: .75rem 1rem;
  border-bottom: 1px solid var(--clr-border);
}
th {
  background: var(--clr-bg-soft);
  font-weight: 600;
  color: var(--clr-primary);
}
tr:hover td { background: var(--clr-bg-soft); }

/* ---- Footer ---------------------------------------------- */
.site-footer {
  background: var(--clr-primary-dark);
  color: #a8bcd0;
  padding-top: 3.5rem;
}
.site-footer a { color: #a8bcd0; }
.site-footer a:hover { color: var(--clr-white); text-decoration: none; }

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-col h4 {
  color: var(--clr-white);
  font-size: .9rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 1rem;
  margin-top: 0;
}
.footer-col ul { list-style: none; padding: 0; }
.footer-col li { margin-bottom: .45rem; font-size: .875rem; }

.footer-bottom {
  padding-block: 1.25rem;
  text-align: center;
  font-size: .8rem;
  color: #6a8099;
}
.footer-bottom a { color: #6a8099; }
.footer-bottom a:hover { color: #a8bcd0; }

/* ---- Badges / Tags --------------------------------------- */
.tag {
  display: inline-block;
  background: var(--clr-bg-soft);
  border: 1px solid var(--clr-border);
  color: var(--clr-text-muted);
  padding: .2rem .65rem;
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 500;
}
.tag--blue {
  background: #e8f2fc;
  border-color: #b3d1f0;
  color: var(--clr-accent);
}

/* ---- Highlight box --------------------------------------- */
.highlight-box {
  background: #e8f2fc;
  border-left: 4px solid var(--clr-accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1rem 1.25rem;
  margin-block: 1.5rem;
  font-size: .95rem;
  color: var(--clr-primary);
}

/* ---- Utility --------------------------------------------- */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.visually-hidden { @extend .sr-only; }

/* ---- Responsive ------------------------------------------ */
@media (max-width: 900px) {
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .menu-toggle { display: flex; align-items: center; }

  .main-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--clr-white);
    border-bottom: 1px solid var(--clr-border);
    box-shadow: var(--shadow-md);
    padding: 1rem;
    z-index: 199;
  }
  .main-nav.is-open { display: block; }
  .main-nav__list { flex-direction: column; gap: 0; }
  .main-nav__link { padding: .65rem .5rem; font-size: 1rem; border-radius: 0; }

  .dropdown {
    position: static;
    box-shadow: none;
    border: none;
    border-left: 3px solid var(--clr-bg-gray);
    border-radius: 0;
    padding: 0;
    margin-left: 1rem;
    display: none;
  }
  .main-nav__item--has-dropdown.is-open .dropdown { display: block; }
  .dropdown__link { padding: .5rem .75rem; }

  .nav-cta { margin-left: 0; margin-top: .5rem; display: inline-block; }

  .hero { padding-block: 3rem; }
  .section { padding-block: 2.5rem; }
  .cta-banner { padding-block: 2.5rem; }
  .step { flex-direction: column; }
}

@media (max-width: 480px) {
  .btn-group { flex-direction: column; align-items: stretch; }
  .btn { justify-content: center; }
  .form-wrap { padding: 1.25rem; }
}

/* ---- Reduced motion -------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
  html { scroll-behavior: auto; }
}