/* =============================================================
   CODINGLOBE – components.css
   Header, Navigation, Sprachumschalter, Buttons, Karten, Portfolio-Buehne, Footer.
   ============================================================= */

/* ---------- 04 HEADER & NAV ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(0, 0, 0, .82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  transition: background-color var(--transition), box-shadow var(--transition);
}

/* Wird per JS gesetzt, sobald gescrollt wird */
.site-header.is-scrolled {
  background: rgba(0, 0, 0, .95);
  box-shadow: 0 12px 30px -20px rgba(0, 0, 0, .95);
}

.header__inner {
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  line-height: 0;
}

/* Wortmarke aus dem Logo-Kit (helle Variante für dunklen Hintergrund) */
.brand__logo {
  height: 26px;
  width: auto;
  display: block;
}

/* Bildmarke, z. B. im Footer */
.brand__mark-img {
  height: 30px;
  width: auto;
  display: block;
  opacity: .9;
}

/* Lesefortschritt als 2px-Linie unter dem Header */
.scroll-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  height: 2px;
  width: 0;
  background: linear-gradient(90deg, var(--accent), var(--silver));
  transition: width 80ms linear;
}

/* --- Burger-Button --- */
.nav-toggle {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  cursor: pointer;
  transition: border-color var(--transition), background-color var(--transition);
}

.nav-toggle:hover { border-color: var(--accent); background: var(--accent-soft); }

.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--text);
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle__bars { position: relative; }
.nav-toggle__bars::before { position: absolute; top: -6px; }
.nav-toggle__bars::after  { position: absolute; top: 6px; }

/* Burger wird zum X */
.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after  { transform: translateY(-6px) rotate(-45deg); }

/* --- Mobile-Panel --- */
.nav {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  z-index: 99;
  padding: 1rem var(--gutter) 1.75rem;
  background: rgba(0, 0, 0, .97);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  transform: translateY(-10px);
  opacity: 0;
  visibility: hidden;
  transition: transform var(--transition), opacity var(--transition), visibility var(--transition);
}

.nav.is-open { transform: translateY(0); opacity: 1; visibility: visible; }

.nav__list {
  display: flex;
  flex-direction: column;
  gap: .25rem;
}

.nav__link {
  display: block;
  padding: .8rem .9rem;
  border-radius: 10px;
  font-size: 1rem;
  color: var(--text-muted);
  transition: color var(--transition), background-color var(--transition);
}

.nav__link:hover { color: var(--text); background: rgba(255, 255, 255, .05); }

/* Aktiver Abschnitt – wird per Scrollspy gesetzt */
.nav__link[aria-current="true"] {
  color: var(--accent);
  background: var(--accent-soft);
}

.nav__link--cta {
  color: var(--accent);
  border: 1px solid var(--line-strong);
  margin-top: .5rem;
  text-align: center;
}
.nav__link--cta:hover { background: var(--accent-soft); color: var(--accent); }

/* --- Sprachumschalter --- */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  margin-top: .75rem;
  padding-top: .75rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.lang-switch__current {
  padding: .3rem .5rem;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--accent);
}

.lang-switch__link {
  padding: .3rem .5rem;
  border-radius: 6px;
  border: 1px solid var(--line-strong);
  transition: color var(--transition), border-color var(--transition), background-color var(--transition);
}
.lang-switch__link:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}

.nav-backdrop {
  position: fixed;
  inset: 0;
  z-index: 98;
  background: rgba(0, 0, 0, .6);
  opacity: 0;
  transition: opacity var(--transition);
}
.nav-backdrop.is-visible { opacity: 1; }

/* ---------- 07 SERVICES ---------- */
.cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.card {
  position: relative;
  padding: 1.75rem 1.5rem;
  background: linear-gradient(180deg, var(--panel), var(--bg-elevated));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
}

.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--silver));
  opacity: 0;
  transition: opacity var(--transition);
}

.card:hover { border-color: var(--line-strong); transform: translateY(-3px); }
.card:hover::before { opacity: 1; }

.card__tag {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.card__title {
  font-size: 1.2rem;
  font-weight: 650;
  letter-spacing: -.01em;
  margin-bottom: .6rem;
}

.card__text { color: var(--text-muted); font-size: .96rem; }

/* ---------- 08 PORTFOLIO ---------- */
.canvas {
  width: 100%;
  max-width: 1000px;
  margin-inline: auto;
  background: var(--bg-elevated);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 24px 60px -30px rgba(0, 0, 0, .9),
              0 0 0 1px rgba(219, 183, 91, .06);
}

.canvas__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .7rem 1rem;
  border-bottom: 1px solid var(--line);
  background: rgba(18, 18, 20, .8);
}

.canvas__label {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.canvas__dots {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 14px 0 0 var(--line-strong), 28px 0 0 var(--line-strong);
  margin-right: 28px;
}

/* 16:9 Bühne für das spätere Power BI iFrame */
.canvas__frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background:
    linear-gradient(180deg, rgba(230, 230, 230, .05), transparent 55%),
    var(--panel);
}

/* Fallback für ältere Browser ohne aspect-ratio */
@supports not (aspect-ratio: 16 / 9) {
  .canvas__frame { height: 0; padding-bottom: 56.25%; }
}

.canvas__frame > iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.canvas__frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("../img/logo-mark.png") center / min(28%, 180px) no-repeat;
  opacity: .07;
  pointer-events: none;
}

.canvas__placeholder {
  position: absolute;
  inset: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  text-align: center;
  border: 1px dashed var(--line-strong);
  border-radius: 10px;
  padding: 1rem;
}

.canvas__placeholder-code {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(219, 183, 91, .28);
  border-radius: 999px;
  padding: .25rem .75rem;
}

.canvas__placeholder-text {
  font-size: .9rem;
  color: var(--text-muted);
  max-width: 34rem;
  line-height: 1.6;
}

.canvas__caption {
  max-width: 1000px;
  margin: 1.25rem auto 0;
  text-align: center;
  color: var(--text-muted);
  font-size: .95rem;
}

/* ---------- 11 FOOTER ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 2rem;
  background: rgba(0, 0, 0, .6);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem 2rem;
  text-align: center;
}

.footer__brand { line-height: 0; }

.footer__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .35rem 1.5rem;
}

.footer__list a {
  font-size: .92rem;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer__list a:hover { color: var(--accent); }

.footer__copy {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  text-align: center;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .08em;
  color: var(--text-muted);
}

/* ---------- 12 BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .85rem 1.5rem;
  border-radius: 10px;
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: .01em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), background-color var(--transition),
              border-color var(--transition), box-shadow var(--transition);
}

.btn--primary {
  background: var(--accent);
  color: #0A0A0A;
  box-shadow: 0 10px 30px -14px rgba(219, 183, 91, .9);
}
.btn--primary:hover { background: #E8CC85; transform: translateY(-2px); }

.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line-strong);
}
.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
  transform: translateY(-2px);
}

/* Zurück-nach-oben */
.to-top {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 90;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--panel);
  border: 1px solid var(--line-strong);
  color: var(--accent);
  font-size: 1.1rem;
  cursor: pointer;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--transition), transform var(--transition), border-color var(--transition);
}
.to-top.is-visible { opacity: 1; transform: translateY(0); }
.to-top:hover { border-color: var(--accent); }

/* ---------- BREAKPOINTS: Komponenten ---------- */
@media (min-width: 640px) {
  .cards { grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }

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

  .to-top { right: 1.5rem; bottom: 1.5rem; }
}

/* Ab 900px wird die Navigation zur Zeile, der Burger verschwindet */
@media (min-width: 900px) {
  .brand__logo { height: 30px; }
  .nav-toggle { display: none; }
  /* --- Sprachumschalter --- */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  margin-top: .75rem;
  padding-top: .75rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.lang-switch__current {
  padding: .3rem .5rem;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--accent);
}

.lang-switch__link {
  padding: .3rem .5rem;
  border-radius: 6px;
  border: 1px solid var(--line-strong);
  transition: color var(--transition), border-color var(--transition), background-color var(--transition);
}
.lang-switch__link:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}

.nav-backdrop { display: none; }

  .nav {
    position: static;
    padding: 0;
    background: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border: 0;
    transform: none;
    opacity: 1;
    visibility: visible;
  }

  .nav__list { flex-direction: row; align-items: center; gap: .35rem; }
  .nav__link { padding: .45rem .8rem; font-size: .9rem; border-radius: 8px; }
  .nav__link--cta { margin-top: 0; }

  .lang-switch { margin: 0 0 0 .5rem; padding-top: 0; border-top: 0; }

  .cards { grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
  .card { padding: 2rem 1.75rem; }
}