/* ===== Main Container ===== */
.colorado-postal-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px;
}

/* ===== Main Title ===== */
.main-title {
    font-family: Didot, "Didot LT STD", "Hoefler Text", Garamond, "Times New Roman", serif;
    font-size: 3em;
    text-align: center;
    margin-bottom: 25px;
    color: #000;
    text-shadow: 2px 2px 4px rgba(192,192,192,0.8);
}

/* ===== Intro Text Block ===== */
.text-block {
    background: linear-gradient(to bottom, #e8f5e9 0%, #c8e6c9 100%);
    border: 2px solid #000;
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.intro-text {
    font-size: 1.05em;
    line-height: 1.8;
    color: #555;
}

/* ===== Instructions ===== */
.instructions {
    text-align: center;
    font-size: 1.1em;
    font-weight: 600;
    color: #d32f2f;
    margin: 25px 0;
}

/* ===== Publications Row ===== */
.publications-grid {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: nowrap;
}

/* ===== Clickable Box ===== */
.publication-box {
    width: 220px;
    text-decoration: none;
    color: inherit;
    background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
    border: 2px solid #9e9e9e;
    border-radius: 12px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.publication-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

/* ===== Placeholder Area ===== */
.scan-placeholder {
    width: 200px;
    height: 253px;
    background-color: #ffffff;
    border: 2px dashed #999;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: #666;
    margin-bottom: 10px;
}

/* ===== Caption ===== */
.publication-caption {
    font-size: 0.95em;
    font-weight: 600;
    color: #2c3e50;
    text-align: center;
    padding-top: 4px;
}

/* ===== Double Divider ===== */
/* Double-line divider (dark gray, guaranteed visible) */
.double-divider {
    width: 80%;
    margin: 40px auto 0;
    height: 0;
    border-top: 2px solid #555;
    border-bottom: 2px solid #555;
    display: block;
}


/* ===== Responsive ===== */
@media (max-width: 768px) {
    .publications-grid {
        flex-wrap: wrap;
    }

    .main-title {
        font-size: 2em;
    }
}

@media (max-width: 480px) {
    .colorado-postal-container {
        padding: 20px;
    }

    .main-title {
        font-size: 1.6em;
    }
}