/* ============================================================
   OFFLOAD SOLUTIONS — style.css
   Schriften werden lokal aus assets/fonts/ ausgeliefert.
   Keine Verbindung zu externen Font-Servern.
   ============================================================ */

/* ---------- FONT-FACE ---------- */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('assets/fonts/Inter-Regular.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('assets/fonts/Inter-Medium.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('assets/fonts/Inter-SemiBold.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('assets/fonts/Inter-Bold.woff2') format('woff2');
}
@font-face {
  font-family: 'Sora';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('assets/fonts/Sora-Bold.ttf') format('truetype');
}
@font-face {
  font-family: 'Sora';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url('assets/fonts/Sora-ExtraBold.ttf') format('truetype');
}

/* ---------- CUSTOM PROPERTIES ---------- */
:root {
  --anthrazit:      #1A1D21;
  --kupfer:         #D97A4A;
  --off-white:      #F5F2ED;
  --steingrau:      #8B8680;
  --rahmen:         #E5E0D8;
  --anthrazit-tief: #15171A;

  --container-max: 1200px;
  --pad-x:         clamp(1.25rem, 5vw, 2.5rem);
  --pad-y:         clamp(4rem, 8vw, 7rem);
  --header-h:      72px;
  --radius:        4px;
  --ease:          200ms ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-weight: 400;
  color: var(--anthrazit);
  background-color: var(--off-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ol, ul { list-style: none; }

/* ---------- LAYOUT ---------- */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

/* ---------- FADE-IN SCROLL ANIMATION ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-block;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1;
  border: 2px solid transparent;
  transition: background-color var(--ease), color var(--ease),
              border-color var(--ease), transform var(--ease);
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background-color: var(--kupfer);
  color: var(--off-white);
  border-color: var(--kupfer);
}
.btn-primary:hover {
  background-color: #c4682e;
  border-color: #c4682e;
}

.btn-secondary {
  background-color: transparent;
  color: var(--anthrazit);
  border-color: var(--anthrazit);
}
.btn-secondary:hover {
  background-color: var(--anthrazit);
  color: var(--off-white);
}

/* Inline link button (used inside text / form) */
.link-btn {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  color: var(--kupfer);
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
}
.link-btn:hover { color: #c4682e; }

/* Footer / small pill buttons */
.btn-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(245, 242, 237, 0.55);
  padding: 0.375rem 0.75rem;
  border: 1px solid rgba(245, 242, 237, 0.18);
  border-radius: var(--radius);
  transition: color var(--ease), border-color var(--ease);
}
.btn-link:hover {
  color: var(--off-white);
  border-color: rgba(245, 242, 237, 0.4);
}

/* ---------- FOCUS ---------- */
:focus-visible {
  outline: 2px solid var(--kupfer);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--off-white);
  border-bottom: 1px solid transparent;
  transition: border-color var(--ease), background-color var(--ease),
              backdrop-filter var(--ease);
}
.site-header.scrolled {
  border-color: var(--rahmen);
  background-color: rgba(245, 242, 237, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}

/* Logo */
.logo {
  display: flex;
  flex-direction: column;
  gap: 3px;
  text-decoration: none;
}
.logo-offload {
  font-family: 'Sora', sans-serif;
  font-weight: 800;
  font-size: 22px;
  line-height: 1;
  letter-spacing: -1px;
  color: var(--anthrazit);
  text-transform: uppercase;
}
.logo-solutions {
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 11px;
  line-height: 1;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--anthrazit);
  margin-top: 2px;
}

/* Footer variant: Off-White text */
.logo--footer .logo-offload,
.logo--footer .logo-solutions {
  color: var(--off-white);
}
.logo--footer {
  text-decoration: none;
}

/* Footer sizes */
.logo--footer .logo-offload {
  font-size: 17px;
}
.logo--footer .logo-solutions {
  font-size: 9px;
  letter-spacing: 4px;
}

/* Mobile */
@media (max-width: 599px) {
  .logo-offload   { font-size: 18px; }
  .logo-solutions { font-size: 9px; }
}

/* Desktop nav */
.nav-desktop {
  display: none;
  gap: 2rem;
  align-items: center;
}
@media (min-width: 768px) {
  .nav-desktop { display: flex; }
}
.nav-desktop a {
  font-size: 0.9375rem;
  font-weight: 500;
  position: relative;
  padding-bottom: 3px;
}
.nav-desktop a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--kupfer);
  transition: width var(--ease);
}
.nav-desktop a:hover::after { width: 100%; }

/* Burger button */
.burger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  width: 36px;
}
@media (min-width: 768px) {
  .burger { display: none; }
}
.burger span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--anthrazit);
  border-radius: 1px;
  transition: transform var(--ease), opacity var(--ease);
}
.burger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.burger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.burger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav */
.nav-mobile {
  display: flex;
  flex-direction: column;
  gap: 1.375rem;
  padding: 1.5rem var(--pad-x) 2rem;
  border-top: 1px solid var(--rahmen);
  background-color: var(--off-white);
  animation: slideDown 0.2s ease;
}
.nav-mobile[hidden] { display: none; }
.nav-mobile a {
  font-size: 1.125rem;
  font-weight: 500;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  padding-top: calc(var(--pad-y) + 1.5rem);
  padding-bottom: var(--pad-y);
  background-color: var(--off-white);
}
.hero h1 {
  font-size: clamp(2.25rem, 6vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.75px;
  line-height: 1.08;
  max-width: 16ch;
  margin-bottom: 1.5rem;
}
.hero-sub {
  font-size: clamp(1.0625rem, 2vw, 1.25rem);
  color: var(--steingrau);
  max-width: 50ch;
  line-height: 1.65;
  margin-bottom: 2.5rem;
}
.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ============================================================
   PROBLEM
   ============================================================ */
.problem {
  padding-block: var(--pad-y);
  border-top: 1px solid var(--rahmen);
}
.problem h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 3rem;
}
.problem-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.25rem;
}
@media (min-width: 640px) {
  .problem-grid { grid-template-columns: repeat(3, 1fr); }
}
.problem-card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.card-line {
  display: block;
  width: 32px;
  height: 3px;
  background-color: var(--kupfer);
  border-radius: 2px;
}
.problem-card p {
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.65;
}

/* ============================================================
   PROZESS
   ============================================================ */
.prozess {
  padding-block: var(--pad-y);
  background-color: var(--anthrazit);
}
.prozess h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--off-white);
  max-width: 22ch;
  margin-bottom: 3.5rem;
}
.steps {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}
@media (min-width: 768px) {
  .steps {
    flex-direction: row;
    gap: 3rem;
  }
}
.step {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  flex: 1;
}
.step-number {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--kupfer);
  color: var(--off-white);
  font-size: 1.125rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}
.step-content h3 {
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--off-white);
  margin-bottom: 0.5rem;
}
.step-content p {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: rgba(245, 242, 237, 0.65);
}

/* ============================================================
   BEISPIELE
   ============================================================ */
.beispiele {
  padding-block: var(--pad-y);
  border-top: 1px solid var(--rahmen);
}
.beispiele h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 3rem;
}
.beispiele-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
@media (min-width: 640px) {
  .beispiele-grid { grid-template-columns: repeat(3, 1fr); }
}
.beispiel-karte {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  padding: 1.75rem;
  border: 1px solid var(--rahmen);
  border-radius: 6px;
  background-color: #fff;
  transition: transform var(--ease), box-shadow var(--ease);
}
.beispiel-karte:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 28px rgba(26, 29, 33, 0.08);
}
.branche-tag {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--kupfer);
}
.beispiel-karte h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.2px;
}
.beispiel-karte p {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--steingrau);
}

/* ============================================================
   KEIN ABO
   ============================================================ */
.kein-abo {
  padding-block: var(--pad-y);
  border-top: 1px solid var(--rahmen);
}
.kein-abo-inner { max-width: 680px; }
.kein-abo h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 1.25rem;
}
.kein-abo p {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--steingrau);
}

/* ============================================================
   ÜBER UNS
   ============================================================ */
.ueber-uns {
  padding-block: var(--pad-y);
  border-top: 1px solid var(--rahmen);
}
.ueber-uns h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 3rem;
}
.team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}
@media (min-width: 640px) {
  .team-grid { grid-template-columns: repeat(2, 1fr); }
}
.team-karte {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}
.team-foto {
  flex-shrink: 0;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  display: block;
}
@media (max-width: 599px) {
  .team-foto { width: 120px; height: 120px; }
}
.team-info h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}
.team-rolle {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--kupfer);
  margin-bottom: 0.75rem;
}
.team-info p:last-child {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--steingrau);
}

/* ============================================================
   KONTAKT
   ============================================================ */
.kontakt {
  padding-block: var(--pad-y);
  background-color: var(--anthrazit);
}
.kontakt h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--off-white);
  margin-bottom: 0.75rem;
}
.kontakt-sub {
  font-size: 1.0625rem;
  color: rgba(245, 242, 237, 0.6);
  max-width: 50ch;
  line-height: 1.65;
  margin-bottom: 2.5rem;
}

/* Form */
.kontakt-form {
  max-width: 680px;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
@media (min-width: 560px) {
  .form-row { grid-template-columns: 1fr 1fr; }
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.form-group label {
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(245, 242, 237, 0.75);
}
.req { color: var(--kupfer); }
.optional {
  font-weight: 400;
  color: rgba(245, 242, 237, 0.4);
}
.form-group input,
.form-group textarea {
  width: 100%;
  font-family: inherit;
  font-size: 1rem;
  line-height: 1.5;
  padding: 0.75rem 1rem;
  border: 1px solid rgba(245, 242, 237, 0.18);
  border-radius: var(--radius);
  background-color: rgba(245, 242, 237, 0.06);
  color: var(--off-white);
  transition: border-color var(--ease);
  -webkit-appearance: none;
  appearance: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(245, 242, 237, 0.28);
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--kupfer);
}
.form-group input.invalid,
.form-group textarea.invalid {
  border-color: #e05555;
}
.form-group textarea {
  resize: vertical;
  min-height: 130px;
}

/* Checkbox */
.form-checkbox-group { flex-direction: row; }
.checkbox-label {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  cursor: pointer;
  font-size: 0.875rem;
  line-height: 1.55;
  color: rgba(245, 242, 237, 0.65);
}
.checkbox-label input[type="checkbox"] {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 1px;
  accent-color: var(--kupfer);
  cursor: pointer;
}

/* Error message */
.form-error {
  font-size: 0.875rem;
  color: #f08080;
  padding: 0.75rem 1rem;
  border: 1px solid rgba(240, 128, 128, 0.25);
  border-radius: var(--radius);
  background-color: rgba(240, 128, 128, 0.06);
}

.kontakt-fallback {
  margin-top: 1.75rem;
  font-size: 0.9375rem;
  color: rgba(245, 242, 237, 0.45);
}
.kontakt-fallback a {
  color: var(--kupfer);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.kontakt-fallback a:hover { color: #c4682e; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background-color: var(--anthrazit-tief);
  padding-top: 2.5rem;
  padding-bottom: 1.75rem;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(245, 242, 237, 0.07);
}
.footer-logo {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.footer-brand {
  font-size: 0.8125rem;
  color: rgba(245, 242, 237, 0.38);
}
.footer-links {
  display: flex;
  gap: 0.75rem;
}
.footer-copy {
  margin-top: 1.375rem;
  font-size: 0.8125rem;
  color: rgba(245, 242, 237, 0.28);
}

/* ============================================================
   MODAL
   ============================================================ */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
}
.modal[hidden] { display: none; }

.modal-backdrop {
  position: absolute;
  inset: 0;
  background-color: rgba(21, 23, 26, 0.72);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.modal-box {
  position: relative;
  background-color: var(--off-white);
  border-radius: 8px;
  max-width: 640px;
  width: 100%;
  max-height: 86vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 24px 64px rgba(21, 23, 26, 0.45);
  animation: modalIn 0.22s ease;
}
@keyframes modalIn {
  from { opacity: 0; transform: scale(0.96) translateY(8px); }
  to   { opacity: 1; transform: scale(1)    translateY(0); }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 1.75rem;
  border-bottom: 1px solid var(--rahmen);
  flex-shrink: 0;
}
.modal-header h2 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.3px;
}
.modal-close {
  width: 32px;
  height: 32px;
  font-size: 1.5rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  color: var(--steingrau);
  transition: color var(--ease), background-color var(--ease);
}
.modal-close:hover {
  color: var(--anthrazit);
  background-color: var(--rahmen);
}

.modal-body {
  overflow-y: auto;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  font-size: 0.9375rem;
  line-height: 1.65;
}
.modal-body h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-top: 0.5rem;
}
.modal-body a {
  color: var(--kupfer);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.modal-body a:hover { color: #c4682e; }