/*  PORTAL STARTSEITE (index.html)
    ===================================================================== */

    .portal-body {
        margin: 0;
        font-family: 'Reddit Sans', system-ui, -apple-system, sans-serif;
        background: #ffffff;
        min-height: 100vh;
        color: var(--slate-800);
        overflow-x: hidden;
    }

    .portal-main {
        padding: calc(var(--shell-header-h) + 48px) 28px 64px;
        max-width: 1200px;
        margin: 0 auto;
    }

    /* ---- Portal Hero ---- */
    .portal-hero {
        max-width: 780px;
        margin: 0 auto 44px;
        text-align: center;
    }

    .portal-hero-eyebrow {
        font-size: 0.88rem;
        font-weight: 800;
        letter-spacing: 0.1em;
        text-transform: uppercase;
        color: var(--primary);
        margin-bottom: 12px;
    }

    .portal-hero-title {
        margin: 0 0 16px;
        font-size: clamp(2.4rem, 6vw, 4rem);
        line-height: 1;
        color: var(--slate-800);
    }

    .portal-hero-desc {
        font-size: 1.1rem;
        line-height: 1.6;
        color: var(--slate-500);
        margin: 0 auto;
        max-width: 620px;
    }

    /* ---- Portal Card Grid ---- */
    .portal-grid {
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 20px;
    }

    /* ---- Portal Card ---- */
    .portal-card {
        display: flex;
        flex-direction: column;
        gap: 16px;
        padding: 28px;
        border-radius: 24px;
        border: 1px solid rgba(148, 163, 184, 0.28);
        background: rgba(255, 255, 255, 0.92);
        box-shadow: 0 18px 56px rgba(15, 23, 42, 0.07);
        text-decoration: none;
        color: inherit;
        transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
        cursor: pointer;
        outline-offset: 3px;
    }

    .portal-card:hover {
        transform: translateY(-4px);
        box-shadow: 0 28px 72px rgba(15, 23, 42, 0.12);
        border-color: rgba(148, 163, 184, 0.5);
    }

    .portal-card-header {
        display: flex;
        align-items: center;
        gap: 12px;
        min-height: 2.6rem;
    }

    .portal-card-icon {
        font-size: 2.4rem;
        line-height: 1;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
    }

    .portal-card-body {
        flex: 1;
        display: flex;
        flex-direction: column;
        gap: 8px;
    }

    .portal-card-kicker {
        font-size: 0.78rem;
        font-weight: 800;
        text-transform: uppercase;
        letter-spacing: 0.09em;
        line-height: 1.2;
        display: flex;
        align-items: center;
        min-height: 1.2em;
    }

    .portal-card-title {
        margin: 0;
        font-size: 1.4rem;
        font-weight: 800;
        line-height: 1.15;
        color: var(--slate-800);
    }

    .portal-card-desc {
        margin: 0;
        font-size: 0.9rem;
        line-height: 1.55;
        color: var(--slate-500);
    }

    .portal-card-footer {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 8px;
        margin-top: auto;
    }

    .portal-card-arrow {
        font-size: 1.2rem;
        color: var(--slate-300);
        transition: transform 0.18s ease, color 0.18s ease;
    }

    .portal-card:hover .portal-card-arrow {
        transform: translateX(4px);
        color: var(--slate-500);
    }

    /* ---- Portal Badge ---- */
    .portal-badge {
        display: inline-flex;
        align-items: center;
        padding: 3px 10px;
        border-radius: 999px;
        font-size: 0.72rem;
        font-weight: 700;
        letter-spacing: 0.04em;
        text-transform: uppercase;
    }

    .portal-badge--active {
        background: rgba(0, 128, 0, 0.1);
        color: var(--primary);
    }

    .portal-badge--wip {
        background: rgba(148, 163, 184, 0.15);
        color: var(--slate-500);
    }

    /* ---- Portal Card Pastell-Varianten ---- */
    .portal-card--generator {
        background: linear-gradient(145deg, rgba(255, 255, 255, 0.98) 0%, rgba(220, 252, 231, 0.55) 100%);
    }
    .portal-card--generator .portal-card-kicker { color: #16a34a; }

    .portal-card--generator-plus {
        background: linear-gradient(145deg, rgba(255, 255, 255, 0.98) 0%, rgba(237, 233, 254, 0.55) 100%);
    }
    .portal-card--generator-plus .portal-card-kicker { color: #7c3aed; }

    .portal-card--visualisierung {
        background: linear-gradient(145deg, rgba(255, 255, 255, 0.98) 0%, rgba(219, 234, 254, 0.55) 100%);
    }
    .portal-card--visualisierung .portal-card-kicker { color: #2563eb; }

    .portal-card--rechner {
        background: linear-gradient(145deg, rgba(255, 255, 255, 0.98) 0%, rgba(254, 243, 199, 0.55) 100%);
    }
    .portal-card--rechner .portal-card-kicker { color: #d97706; }

    .portal-card--kompetenz {
        background: linear-gradient(145deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 228, 230, 0.55) 100%);
    }
    .portal-card--kompetenz .portal-card-kicker { color: #e11d48; }

    .portal-card--quiz-battle {
        background: linear-gradient(145deg, rgba(255, 255, 255, 0.98) 0%, rgba(254, 226, 226, 0.55) 100%);
    }
    .portal-card--quiz-battle .portal-card-kicker { color: #dc2626; }

    .portal-card--quiz-auto {
        background: linear-gradient(145deg, rgba(255, 255, 255, 0.98) 0%, rgba(207, 250, 254, 0.55) 100%);
    }
    .portal-card--quiz-auto .portal-card-kicker { color: #0891b2; }

    .portal-card--quiz-auto-single {
        background: linear-gradient(145deg, rgba(255, 255, 255, 0.98) 0%, rgba(224, 242, 254, 0.65) 100%);
    }
    .portal-card--quiz-auto-single .portal-card-kicker { color: #0284c7; }

    @media (max-width: 900px) {
        .portal-grid {
            grid-template-columns: repeat(2, minmax(0, 1fr));
        }
    }

    @media (max-width: 640px) {
        .portal-main {
            padding: calc(var(--shell-header-h) + 32px) 16px 48px;
        }

        .portal-grid {
            grid-template-columns: 1fr;
        }

        .portal-card {
            padding: 20px;
            border-radius: 18px;
        }
    }