/* ============================================================
   Projects hub — pure button list.
   Add a new project: append one line in index.html following
   the pattern <a href="folder/" class="project-btn">Name</a>.
   Layout, hover and colors come from this file automatically.
   ============================================================ */

.project-buttons {
    width: 100%;
    max-width: 27.5rem;
    margin-inline: auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.project-btn {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 3.5rem;
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--step-1);
    font-weight: 600;
    letter-spacing: 0.02em;
    text-align: center;
    text-decoration: none;
    color: var(--ink);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 1.25rem;
    overflow: hidden;                    /* für den Sheen-Sweep */
    isolation: isolate;
    box-shadow:
        inset 0 1px 0 rgba(229, 240, 255, .06),
        0 6px 18px rgba(4, 10, 20, .35);
    transition:
        transform var(--dur-fast) var(--ease-out-expo),
        border-color var(--dur-fast) var(--ease-out-expo),
        background-color var(--dur-fast) var(--ease-out-expo),
        box-shadow var(--dur-fast) var(--ease-out-expo);
}

@supports ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
    .project-btn {
        -webkit-backdrop-filter: blur(18px) saturate(150%);
        backdrop-filter: blur(18px) saturate(150%);
    }
}

.project-btn::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        105deg,
        transparent 35%,
        rgba(229, 240, 255, .10) 50%,
        transparent 65%
    );
    transform: translateX(-120%);
    pointer-events: none;
}

@media (hover: hover) {
    .project-btn:hover,
    .project-btn:focus-visible {
        transform: translateY(-2px);
        border-color: rgba(77, 149, 255, .45);
        background: rgba(42, 93, 168, .18);
        box-shadow:
            inset 0 1px 0 rgba(229, 240, 255, .08),
            0 12px 28px rgba(4, 10, 20, .45),
            0 8px 30px rgba(77, 149, 255, .22);
    }

    .project-btn:hover::after,
    .project-btn:focus-visible::after {
        transition: transform var(--dur-sweep) var(--ease-out-expo);
        transform: translateX(120%);
    }
}

.project-btn:active {
    transform: translateY(0) scale(0.99);
}

@media (prefers-reduced-motion: reduce) {
    .project-btn {
        transition: none;
    }

    .project-btn::after {
        display: none;
    }

    .project-btn:hover {
        transform: none;
    }
}