/* ============================================================
   about-us.css  —  Production About Page
   Prefix: au-
   Token-Quelle: premium-design-tokens.css (canonical)
   8pt-Grid: 8 16 24 32 40 48 56 64 72 80 96
   Keine Inline-Styles, keine Emojis
   ============================================================ */

/* -- Page Layout ------------------------------------------- */
.au-page {
    background: var(--neutral-50, #f8f9fa);
    min-height: 100vh;
    color: var(--neutral-900, #1a1a2e);
    font-family: 'Inter Tight', 'Inter', sans-serif;
}

/* -- Hero --------------------------------------------------- */
.au-hero {
    background: var(--color-900, #060f1c);
    color: var(--neutral-0, #ffffff);
    padding: 96px 24px 80px;
    text-align: center;
}

.au-hero__inner {
    max-width: 720px;
    margin: 0 auto;
}

.au-hero__eyebrow {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-200, #c7d2fe);
    margin-bottom: 16px;
}

.au-hero__title {
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 700;
    line-height: 1.15;
    margin: 0 0 24px;
    color: var(--neutral-0, #ffffff);
}

.au-hero__lead {
    font-size: clamp(16px, 2.2vw, 20px);
    line-height: 1.65;
    color: rgba(255, 255, 255, 0.72);
    margin: 0 auto;
    max-width: 600px;
}

/* -- Generic Section --------------------------------------- */
.au-section {
    padding: 80px 24px;
}

.au-section--alt {
    background: var(--neutral-0, #ffffff);
}

.au-section__inner {
    max-width: 1080px;
    margin: 0 auto;
}

.au-section__label {
    display: block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-600, #4f46e5);
    margin-bottom: 12px;
}

.au-section__title {
    font-size: clamp(24px, 3.5vw, 40px);
    font-weight: 700;
    line-height: 1.2;
    color: var(--neutral-900, #1a1a2e);
    margin: 0 0 16px;
}

.au-section__body {
    font-size: 17px;
    line-height: 1.7;
    color: var(--neutral-600, #4a5568);
    max-width: 680px;
}

.au-section__body--spaced {
    margin-top: 16px;
}

/* -- Mission Grid ------------------------------------------ */
.au-mission-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
    margin-top: 48px;
}

.au-mission-grid__accent {
    background: var(--color-900, #060f1c);
    border-radius: 16px;
    padding: 48px 40px;
    color: var(--neutral-0, #ffffff);
}

.au-accent-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.au-accent-list__item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.au-accent-list__icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.au-accent-list__icon svg {
    width: 20px;
    height: 20px;
    stroke: var(--neutral-0, #ffffff);
}

.au-accent-list__heading {
    font-size: 15px;
    font-weight: 600;
    color: var(--neutral-0, #ffffff);
    margin: 0 0 4px;
}

.au-accent-list__desc {
    font-size: 14px;
    line-height: 1.55;
    color: rgba(255, 255, 255, 0.65);
    margin: 0;
}

/* -- How It Works ------------------------------------------ */
.au-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin-top: 48px;
}

.au-step {
    position: relative;
}

.au-step__number {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-900, #060f1c);
    color: var(--neutral-0, #ffffff);
    font-size: 18px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.au-step__title {
    font-size: 16px;
    font-weight: 600;
    color: var(--neutral-900, #1a1a2e);
    margin: 0 0 8px;
}

.au-step__desc {
    font-size: 14px;
    line-height: 1.6;
    color: var(--neutral-600, #4a5568);
    margin: 0;
}

.au-steps .au-step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 24px;
    right: -16px;
    width: 32px;
    height: 2px;
    background: var(--neutral-200, #e2e8f0);
}

/* -- Features Grid ----------------------------------------- */
.au-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.au-feature-card {
    background: var(--neutral-0, #ffffff);
    border: 1px solid var(--neutral-200, #e2e8f0);
    border-radius: 12px;
    padding: 32px 28px;
    transition: box-shadow 150ms ease, transform 150ms ease;
}

.au-feature-card:hover {
    box-shadow: 0 4px 24px rgba(6, 15, 28, 0.08);
    transform: translateY(-2px);
}

.au-feature-card__icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    background: var(--color-50, #eef2ff);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.au-feature-card__icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--color-700, #4338ca);
}

.au-feature-card__title {
    font-size: 16px;
    font-weight: 600;
    color: var(--neutral-900, #1a1a2e);
    margin: 0 0 8px;
}

.au-feature-card__desc {
    font-size: 14px;
    line-height: 1.6;
    color: var(--neutral-600, #4a5568);
    margin: 0;
}

/* -- CTA Section ------------------------------------------- */
.au-cta {
    background: var(--color-900, #060f1c);
    color: var(--neutral-0, #ffffff);
    padding: 80px 24px;
    text-align: center;
}

.au-cta__inner {
    max-width: 600px;
    margin: 0 auto;
}

.au-cta__title {
    font-size: clamp(24px, 3.5vw, 36px);
    font-weight: 700;
    color: var(--neutral-0, #ffffff);
    margin: 0 0 16px;
}

.au-cta__body {
    font-size: 17px;
    line-height: 1.65;
    color: rgba(255, 255, 255, 0.72);
    margin: 0 0 40px;
}

.au-cta__actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.au-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    min-height: 48px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: background 140ms ease, transform 140ms ease, box-shadow 140ms ease;
    cursor: pointer;
    border: none;
}

.au-btn--primary {
    background: var(--neutral-0, #ffffff);
    color: var(--color-900, #060f1c);
}

.au-btn--primary:hover {
    background: rgba(255, 255, 255, 0.88);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(255, 255, 255, 0.15);
}

.au-btn--secondary {
    background: transparent;
    color: var(--neutral-0, #ffffff);
    border: 1.5px solid rgba(255, 255, 255, 0.35);
}

.au-btn--secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.55);
}

/* -- Footer ------------------------------------------------ */
.au-footer {
    background: var(--neutral-900, #1a1a2e);
    color: rgba(255, 255, 255, 0.5);
    padding: 32px 24px;
    text-align: center;
    font-size: 13px;
}

.au-footer a {
    color: rgba(255, 255, 255, 0.65);
    text-decoration: none;
}

.au-footer a:hover {
    color: var(--neutral-0, #ffffff);
}

/* -- Fade-in Animation ------------------------------------- */
.au-fade {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 500ms ease, transform 500ms ease;
}

.au-fade.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* -- Responsive 1024px ------------------------------------- */
@media (max-width: 1024px) {
    .au-steps {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    .au-steps .au-step:not(:last-child)::after { display: none; }
    .au-features { grid-template-columns: repeat(2, 1fr); }
    .au-mission-grid { grid-template-columns: 1fr; gap: 40px; }
}

/* -- Responsive 768px -------------------------------------- */
@media (max-width: 768px) {
    .au-hero { padding: 72px 16px 56px; }
    .au-section { padding: 56px 16px; }
    .au-steps { grid-template-columns: 1fr; }
    .au-features { grid-template-columns: 1fr; }
    .au-cta { padding: 56px 16px; }
    .au-cta__actions { flex-direction: column; align-items: stretch; }
    .au-btn { text-align: center; }
}

/* -- Dark-mode override ------------------------------------- */
@media (prefers-color-scheme: dark) {
    .au-page { background: var(--neutral-900, #1a1a2e); color: var(--neutral-50, #f8f9fa); }
    .au-section--alt { background: rgba(255, 255, 255, 0.04); }
    .au-section__title { color: var(--neutral-50, #f8f9fa); }
    .au-section__body { color: rgba(255, 255, 255, 0.65); }
    .au-feature-card { background: rgba(255, 255, 255, 0.05); border-color: rgba(255, 255, 255, 0.1); }
    .au-feature-card__title { color: var(--neutral-50, #f8f9fa); }
    .au-feature-card__desc { color: rgba(255, 255, 255, 0.6); }
    .au-feature-card__icon { background: rgba(255, 255, 255, 0.08); }
    .au-feature-card__icon svg { stroke: rgba(255, 255, 255, 0.75); }
    .au-step__title { color: var(--neutral-50, #f8f9fa); }
    .au-step__desc { color: rgba(255, 255, 255, 0.6); }
}