/* ============================================================================
   Editor Guide — Fullscreen interactive tutorial overlay
   ============================================================================ */

/* ── Overlay ─────────────────────────────────────────────────────────────── */
.guide-overlay {
    position: fixed;
    inset: 0;
    z-index: 100000;
    display: flex;
    background: rgba(8, 8, 14, 0.92);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.guide-overlay.visible {
    opacity: 1;
    pointer-events: auto;
}

/* ── Sidebar nav ─────────────────────────────────────────────────────────── */
.guide-sidebar {
    width: 240px;
    flex-shrink: 0;
    background: rgba(16, 16, 24, 0.6);
    border-right: 1px solid rgba(255,255,255,0.08);
    display: flex;
    flex-direction: column;
    padding: 24px 0;
    overflow-y: auto;
}
.guide-sidebar-title {
    font-size: 20px;
    font-weight: 700;
    padding: 0 24px 20px;
    background: linear-gradient(135deg, #fff 0%, #a0b4ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 0.5px;
}
.guide-nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 24px;
    font-size: 13px;
    font-weight: 500;
    color: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: all 0.15s ease;
    border-left: 3px solid transparent;
}
.guide-nav-item:hover {
    color: rgba(255,255,255,0.8);
    background: rgba(255,255,255,0.03);
}
.guide-nav-item.active {
    color: #fff;
    background: rgba(99, 102, 241, 0.12);
    border-left-color: #6b8afd;
}
.guide-nav-icon {
    font-size: 16px;
    width: 22px;
    text-align: center;
    flex-shrink: 0;
}
.guide-sidebar-footer {
    margin-top: auto;
    padding: 16px 24px;
    font-size: 11px;
    color: rgba(255,255,255,0.25);
}

/* ── Main content ────────────────────────────────────────────────────────── */
.guide-main {
    flex: 1;
    overflow-y: auto;
    padding: 40px 56px;
    scroll-behavior: smooth;
}
.guide-main::-webkit-scrollbar { width: 6px; }
.guide-main::-webkit-scrollbar-track { background: transparent; }
.guide-main::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.1);
    border-radius: 3px;
}

/* ── Close button ────────────────────────────────────────────────────────── */
.guide-close {
    position: absolute;
    top: 16px;
    right: 20px;
    width: 36px;
    height: 36px;
    border: none;
    background: rgba(255,255,255,0.06);
    color: rgba(255,255,255,0.6);
    border-radius: 8px;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
    z-index: 2;
}
.guide-close:hover {
    background: rgba(255,255,255,0.12);
    color: #fff;
}

/* ── Section ─────────────────────────────────────────────────────────────── */
.guide-section {
    margin-bottom: 56px;
    scroll-margin-top: 24px;
}
.guide-section-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #fff 0%, #c4d0ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.guide-section-subtitle {
    font-size: 14px;
    color: rgba(255,255,255,0.45);
    margin-bottom: 24px;
    line-height: 1.5;
}

/* ── Cards grid ──────────────────────────────────────────────────────────── */
.guide-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
    margin-top: 16px;
}
.guide-card {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 12px;
    padding: 20px;
    transition: all 0.2s ease;
}
.guide-card:hover {
    background: rgba(255,255,255,0.06);
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}
.guide-card-icon {
    font-size: 28px;
    margin-bottom: 12px;
}
.guide-card-title {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 6px;
}
.guide-card-desc {
    font-size: 12.5px;
    color: rgba(255,255,255,0.5);
    line-height: 1.6;
}

/* ── Keyboard shortcut display ───────────────────────────────────────────── */
.guide-key {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 28px;
    height: 26px;
    padding: 0 8px;
    font-size: 11px;
    font-weight: 700;
    font-family: system-ui, -apple-system, sans-serif;
    color: #fff;
    background: linear-gradient(180deg, rgba(255,255,255,0.12) 0%, rgba(255,255,255,0.06) 100%);
    border: 1px solid rgba(255,255,255,0.15);
    border-bottom: 2px solid rgba(255,255,255,0.2);
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.3);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}
.guide-key-accent {
    background: linear-gradient(180deg, rgba(99, 102, 241, 0.35) 0%, rgba(99, 102, 241, 0.2) 100%);
    border-color: rgba(99, 102, 241, 0.4);
    border-bottom-color: rgba(99, 102, 241, 0.5);
    color: #c4d0ff;
}

/* ── Shortcut table ──────────────────────────────────────────────────────── */
.guide-shortcut-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 8px;
    margin-top: 12px;
}
.guide-shortcut-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    background: rgba(255,255,255,0.025);
    border-radius: 8px;
    transition: background 0.1s;
}
.guide-shortcut-row:hover {
    background: rgba(255,255,255,0.05);
}
.guide-shortcut-label {
    font-size: 13px;
    color: rgba(255,255,255,0.7);
}
.guide-shortcut-keys {
    display: flex;
    gap: 4px;
    align-items: center;
}
.guide-shortcut-plus {
    font-size: 10px;
    color: rgba(255,255,255,0.3);
    margin: 0 2px;
}

/* ── Step list (numbered) ────────────────────────────────────────────────── */
.guide-steps {
    counter-reset: step;
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 16px;
}
.guide-step {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 16px;
    background: rgba(255,255,255,0.025);
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.05);
}
.guide-step::before {
    counter-increment: step;
    content: counter(step);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    flex-shrink: 0;
    font-size: 13px;
    font-weight: 700;
    color: #c4d0ff;
    background: rgba(99, 102, 241, 0.2);
    border-radius: 50%;
    border: 1px solid rgba(99, 102, 241, 0.3);
}
.guide-step-content {
    flex: 1;
}
.guide-step-title {
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 4px;
}
.guide-step-desc {
    font-size: 12.5px;
    color: rgba(255,255,255,0.5);
    line-height: 1.5;
}

/* ── Demo embed area ─────────────────────────────────────────────────────── */
.guide-demo {
    position: relative;
    width: 100%;
    height: 280px;
    background: rgba(0,0,0,0.4);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 12px;
    overflow: hidden;
    margin-top: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.guide-demo canvas {
    width: 100%;
    height: 100%;
    display: block;
}
.guide-demo-label {
    position: absolute;
    bottom: 10px;
    left: 12px;
    font-size: 10px;
    font-weight: 600;
    color: rgba(255,255,255,0.4);
    text-transform: uppercase;
    letter-spacing: 1px;
    background: rgba(0,0,0,0.5);
    padding: 3px 8px;
    border-radius: 4px;
}
.guide-demo-placeholder {
    font-size: 13px;
    color: rgba(255,255,255,0.3);
    text-align: center;
    padding: 20px;
}
.guide-demo-placeholder .guide-demo-icon {
    font-size: 40px;
    display: block;
    margin-bottom: 12px;
    opacity: 0.5;
}

/* ── Tip callout ─────────────────────────────────────────────────────────── */
.guide-tip {
    display: flex;
    gap: 12px;
    padding: 14px 16px;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 10px;
    margin-top: 16px;
}
.guide-tip-icon {
    font-size: 18px;
    flex-shrink: 0;
}
.guide-tip-text {
    font-size: 12.5px;
    color: rgba(255,255,255,0.65);
    line-height: 1.55;
}

/* ── Welcome hero ────────────────────────────────────────────────────────── */
.guide-hero {
    text-align: center;
    padding: 40px 0 48px;
    margin-bottom: 32px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}
.guide-hero-icon {
    font-size: 56px;
    margin-bottom: 16px;
    filter: drop-shadow(0 0 24px rgba(107, 138, 253, 0.4));
}
.guide-hero-title {
    font-size: 36px;
    font-weight: 800;
    background: linear-gradient(135deg, #fff 0%, #6b8afd 50%, #a78bfa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}
.guide-hero-desc {
    font-size: 15px;
    color: rgba(255,255,255,0.45);
    max-width: 500px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ── Layout panel diagram ────────────────────────────────────────────────── */
.guide-layout-diagram {
    display: grid;
    grid-template-columns: 100px 1fr 120px;
    grid-template-rows: 32px 1fr 60px;
    gap: 4px;
    height: 220px;
    margin-top: 16px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.guide-layout-cell {
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    border: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.5);
    transition: all 0.2s;
}
.guide-layout-toolbar {
    grid-column: 1 / -1;
    background: rgba(99, 102, 241, 0.15);
    border-color: rgba(99, 102, 241, 0.3);
    color: #a0b4ff;
}
.guide-layout-entities {
    background: rgba(74, 222, 128, 0.08);
    border-color: rgba(74, 222, 128, 0.2);
    color: rgba(74, 222, 128, 0.7);
}
.guide-layout-viewport {
    background: rgba(255,255,255,0.04);
    border-color: rgba(255,255,255,0.15);
    color: rgba(255,255,255,0.6);
    font-size: 13px;
}
.guide-layout-inspector {
    background: rgba(251, 191, 36, 0.08);
    border-color: rgba(251, 191, 36, 0.2);
    color: rgba(251, 191, 36, 0.7);
}
.guide-layout-console {
    grid-column: 1 / -1;
    background: rgba(239, 68, 68, 0.08);
    border-color: rgba(239, 68, 68, 0.2);
    color: rgba(239, 68, 68, 0.6);
}

/* ── Scroll progress bar ─────────────────────────────────────────────────── */
.guide-scroll-progress {
    position: absolute;
    top: 0;
    left: 240px;
    right: 0;
    height: 3px;
    background: transparent;
    z-index: 3;
    pointer-events: none;
    transition: width 0.1s linear;
    background: linear-gradient(90deg, #6b8afd, #a78bfa);
    width: 0%;
    border-radius: 0 0 2px 0;
    box-shadow: 0 0 8px rgba(107, 138, 253, 0.5);
}

/* ── Search box ──────────────────────────────────────────────────────────── */
.guide-search-box {
    padding: 0 16px 12px;
}
.guide-search-input {
    width: 100%;
    box-sizing: border-box;
    padding: 8px 12px;
    font-size: 12px;
    font-family: system-ui, -apple-system, sans-serif;
    color: #fff;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    outline: none;
    transition: border-color 0.15s, background 0.15s;
}
.guide-search-input::placeholder {
    color: rgba(255,255,255,0.3);
}
.guide-search-input:focus {
    border-color: rgba(99, 102, 241, 0.5);
    background: rgba(255,255,255,0.08);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.15);
}

/* ── Section header (title + read badge) ─────────────────────────────────── */
.guide-section-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}
.guide-section-header .guide-section-title {
    margin-bottom: 0;
}

/* ── Read badge ──────────────────────────────────────────────────────────── */
.guide-read-badge {
    font-size: 10px;
    font-weight: 700;
    color: #4ade80;
    background: rgba(74, 222, 128, 0.12);
    border: 1px solid rgba(74, 222, 128, 0.25);
    border-radius: 10px;
    padding: 2px 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0;
    transition: opacity 0.2s;
}
.guide-read-badge.visible {
    opacity: 1;
}

/* ── Nav check mark ──────────────────────────────────────────────────────── */
.guide-nav-check {
    margin-left: auto;
    font-size: 11px;
    color: #4ade80;
    font-weight: 700;
    flex-shrink: 0;
}
.guide-nav-item.read {
    color: rgba(255,255,255,0.6);
}
.guide-nav-label {
    flex: 1;
}

/* ── Progress summary (welcome hero) ─────────────────────────────────────── */
.guide-progress-summary {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 20px;
    justify-content: center;
}
.guide-progress-bar-outer {
    width: 200px;
    height: 6px;
    background: rgba(255,255,255,0.08);
    border-radius: 3px;
    overflow: hidden;
}
.guide-progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, #6b8afd, #4ade80);
    border-radius: 3px;
    transition: width 0.4s ease;
    box-shadow: 0 0 8px rgba(107, 138, 253, 0.4);
}
.guide-progress-text {
    font-size: 12px;
    color: rgba(255,255,255,0.45);
    font-weight: 600;
}

/* ── No results ──────────────────────────────────────────────────────────── */
.guide-no-results {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

/* ── Version label ───────────────────────────────────────────────────────── */
.guide-version {
    display: inline-block;
    font-size: 9px;
    font-weight: 700;
    color: rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.04);
    border-radius: 4px;
    padding: 1px 5px;
    margin-right: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ── Search match highlight ──────────────────────────────────────────────── */
.guide-section.guide-search-match {
    border-left: 3px solid rgba(99, 102, 241, 0.5);
    padding-left: 16px;
}

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 800px) {
    .guide-sidebar { width: 56px; overflow: hidden; }
    .guide-nav-item .guide-nav-label,
    .guide-nav-item .guide-nav-check { display: none; }
    .guide-sidebar-title { display: none; }
    .guide-search-box { display: none; }
    .guide-sidebar-footer { display: none; }
    .guide-main { padding: 24px 20px; }
    .guide-cards { grid-template-columns: 1fr; }
    .guide-shortcut-grid { grid-template-columns: 1fr; }
    .guide-scroll-progress { left: 56px; }
}

/* ── Print styles ────────────────────────────────────────────────────────── */
@media print {
    .guide-overlay {
        position: static;
        background: #fff;
        backdrop-filter: none;
        opacity: 1;
        pointer-events: auto;
    }
    .guide-sidebar,
    .guide-close,
    .guide-scroll-progress,
    .guide-demo,
    .guide-search-box { display: none; }
    .guide-main {
        padding: 20px;
        overflow: visible;
    }
    .guide-section-title {
        color: #000;
        -webkit-text-fill-color: #000;
    }
    .guide-section-subtitle,
    .guide-card-desc,
    .guide-step-desc,
    .guide-tip-text,
    .guide-shortcut-label {
        color: #333;
    }
    .guide-key {
        color: #000;
        background: #eee;
        border-color: #ccc;
    }
}

/* ── Animations ──────────────────────────────────────────────────────────── */
@keyframes guideSlideIn {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}
.guide-overlay.visible .guide-section {
    animation: guideSlideIn 0.4s ease-out backwards;
}
.guide-overlay.visible .guide-section:nth-child(2) { animation-delay: 0.05s; }
.guide-overlay.visible .guide-section:nth-child(3) { animation-delay: 0.1s; }
.guide-overlay.visible .guide-section:nth-child(4) { animation-delay: 0.15s; }
.guide-overlay.visible .guide-section:nth-child(5) { animation-delay: 0.2s; }
.guide-overlay.visible .guide-section:nth-child(6) { animation-delay: 0.25s; }
.guide-overlay.visible .guide-section:nth-child(7) { animation-delay: 0.3s; }
.guide-overlay.visible .guide-section:nth-child(8) { animation-delay: 0.35s; }
.guide-overlay.visible .guide-section:nth-child(9) { animation-delay: 0.4s; }
.guide-overlay.visible .guide-section:nth-child(10) { animation-delay: 0.45s; }