/* Tutorial Modal Styles */
.tutorial-modal {
    display: none; /* Hidden by default */
    position: fixed; /* Stay in place */
    z-index: 1060; /* Sit on top */
    left: 0;
    top: 0;
    width: 100%; /* Full width */
    height: 100%; /* Full height */
    overflow: auto; /* Enable scroll if needed */
    background-color: rgba(0,0,0,0.5); /* Black w/ opacity */
}

.tutorial-modal-content {
    background-color: #fefefe;
    margin: 10% auto; /* 10% from the top and centered */
    padding: 25px;
    border: 1px solid #888;
    width: 60%; /* Could be more or less, depending on screen size */
    border-radius: 8px;
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2),0 6px 20px 0 rgba(0,0,0,0.19);
    position: relative;
}

.tutorial-close-btn {
    color: #aaa;
    position: absolute;
    top: 10px;
    right: 20px;
    font-size: 28px;
    font-weight: bold;
}

.tutorial-close-btn:hover,
.tutorial-close-btn:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

.tutorial-modal h2 {
    margin-top: 0;
    color: #333;
    border-bottom: 1px solid #eee;
    padding-bottom: 10px;
}

.tutorial-modal p, .tutorial-modal li {
    line-height: 1.6;
}

/* Command/Code block styling for tutorials */
.code-block {
    position: relative;
    background: #0b1220; /* dark terminal-like */
    color: #e2e8f0;
    border-radius: 10px;
    border: 1px solid rgba(148,163,184,0.2);
    padding: 0.75rem 0.75rem 0.75rem 0.75rem;
    overflow: auto;
}
.code-block pre {
    margin: 0;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 0.9rem;
    line-height: 1.5;
}
.code-block .copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 4px 8px;
    font-size: 0.75rem;
    cursor: pointer;
}
.code-block .copy-btn.copied {
    background: #16a34a;
}

/* PGDD-themed hero header */
.pgdd-hero {
    background: linear-gradient(135deg, #16a34a 0%, #059669 100%);
    color: #fff;
    box-shadow: 0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -2px rgba(0,0,0,.05);
}
.pgdd-hero h1,
.pgdd-hero p,
.pgdd-hero i,
.pgdd-hero a { color: #ffffff; }
.pgdd-hero a:hover { color: #eafff0; }
.pgdd-hero .icon-bg {
    background: rgba(255,255,255,0.15);
}

/* Sticky helper for sidebar cards */
.sticky-90 { position: sticky; top: 90px; }