/* ------------------------------
   Hintergrundbild + beige Overlay
------------------------------ */

body {
    margin: 0;
    padding: 0;
    font-family: system-ui, sans-serif;

    background: url("../assets/images/flex-how-bg.png") no-repeat center top fixed;
    background-size: cover;
    position: relative;
}

/* Beige Overlay */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    background: rgba(245, 235, 220, 0.55);
    pointer-events: none;
    z-index: -1;
}

/* ------------------------------
   Header
------------------------------ */

.fh-header {
    text-align: center;
    padding: 25px 20px;
    background: #ffffff;
    border-bottom: 3px solid #E5007D;
}

.fh-logo {
    width: 200px;
    max-width: 70%;
    height: auto;
    display: block;
    margin: 0 auto 8px;
}

.fh-sub {
    margin-top: 0;
    font-size: 0.95rem;
    color: #555;
}

/* ------------------------------
   Main Content
------------------------------ */

.fh-main {
    margin: 20px;
}

/* ------------------------------
   Sektionen
------------------------------ */

.fh-section {
    padding: 40px 20px;
    max-width: 900px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.65);
    backdrop-filter: blur(3px);
    border-radius: 10px;
}

@media (max-width: 600px) {
    .fh-section {
        padding: 15px;
    }
}

.fh-section h1 {
    margin-top: -5px;
    margin-bottom: -5px;
    font-size: 2.7rem;
    color: #E5007D;
    text-align: center;
}

.fh-section h2 {
    margin-top: 0;
    font-size: 1.5rem;
    color: #E5007D;
    text-align: center;
}

/* Divider */
.fh-divider {
    border: none;
    border-top: 1px solid #ddd;
    margin: 30px auto;
    width: 90%;
}

/* ------------------------------
   Freischalten
------------------------------ */

.fh-unlock-box {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 20px;
}

@media (min-width: 640px) {
    .fh-unlock-box {
        flex-direction: row;
    }
}

.fh-input {
    flex: 1;
    padding: 14px;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 1rem;
}

.fh-message {
    margin-top: 12px;
    font-weight: 600;
    color: #E5007D;
}

/* ------------------------------
   Buttons
------------------------------ */

.fh-btn {
    background: #E5007D;
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
    transition: 0.2s;
}

.fh-btn:hover {
    background: #c4006b;
}

/* ------------------------------
   Hefte Grid
------------------------------ */

.heft-grid {
    display: grid;
    gap: 25px;
    margin-top: 25px;

    /* Mobile/Tablet: automatisch */
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

/* Desktop: genau 3 Spalten */
@media (min-width: 900px) {
    .heft-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}


.heft {
    padding: 25px;
    border: 1px solid #eee;
    border-radius: 10px;
    text-align: center;
    background: rgba(255, 255, 255, 0.65);
    backdrop-filter: blur(3px);
    transition: 0.2s;
}

.heft:hover {
    background: rgba(255, 255, 255, 0.85);
}

.heft h3 {
    margin-top: 0;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

/* ------------------------------
   Installationsbereich
------------------------------ */

.fh-install.hidden {
    display: none;
}

/* Install-Button – groß, mittig, luftig */
.install-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 18px;

    width: 100%;
    max-width: 360px;

    margin: 20px auto;
    padding: 20px 28px;

    font-size: 1.3rem;
    font-weight: 600;

    background-color: #E5007D;
    color: white;
    border: none;
    border-radius: 14px;

    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

/* Icon */
.install-btn .install-icon {
    width: 50px;
    height: 50px;
    object-fit: contain;
    flex-shrink: 0;
}

/* Hover */
.install-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 18px rgba(229, 0, 125, 0.35);
}

.firefox-btn .install-icon {
    width: 50px;
    height: 50px;
    object-fit: contain;
    flex-shrink: 0;
}

/* Hover */
.firefox-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 18px rgba(229, 0, 125, 0.35);
}



/* Hidden */
.hidden {
    display: none;
}

/* Nur Install-Bereich zentrieren */
.fh-install,
#install-hint {
    display: flex;
    flex-direction: column;
    align-items: center;
}