/* =========================================================
   CUSTOM PROPERTIES (VARIABLES)
   Unifies colors, borders, and rounded corners globally.
========================================================= */
:root {
    color-scheme: dark;
    --bg-body:       #0f0f0f;
    --bg-surface:    #1a1a1a;
    --bg-hover:      #1e1e1e;
    --border-light:  #2a2a2a;
    --border-hover:  #444;
    --text-main:     #e8e8e8;
    --text-muted:    #aaa;
    --text-dim:      #555;
    --accent:        #0078d4;
    
    --sidebar-w:     240px;
    --banner-rendered-h: 83px; /* Safe fallback before JS */
    
    --rad-sm: 4px;
    --rad-md: 6px;
    --rad-lg: 12px;
}

/* =========================================================
   RESET + BASE TYPOGRAPHY
========================================================= */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Segoe UI', Tahoma, sans-serif;
    background: var(--bg-body);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: row;
}

a { color: #6ba3d6; text-decoration: none; }
a:hover { text-decoration: underline; }

p, ul, ol { color: var(--text-muted); line-height: 1.8; margin-bottom: 12px; }
ul, ol { padding-left: 20px; }

strong { color: #fff; font-weight: 600; }

code {
    background: var(--bg-body);
    padding: 2px 6px;
    border-radius: var(--rad-sm);
    color: #ccc;
    font-family: 'Courier New', monospace;
    font-size: 0.85em;
    white-space: nowrap;
}

/* =========================================================
   LAYOUT
========================================================= */
.page-wrapper { flex: 1; display: flex; flex-direction: column; min-width: 0; min-height: 100vh; }
.page-wrapper main { flex: 1; }
.container { max-width: 800px; margin: 0 auto; padding: 32px 40px 64px; }

/* =========================================================
   SURFACE PANELS (The "Floating Dashboard" Look)
   Unifies Cards, Headers, Heros, and Support Bands!
========================================================= */
.card, 
.page-heading, 
.hero, 
.support-band, 
.site-header {
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    border-radius: var(--rad-lg);
}

/* Specific Panel Spacing */
.site-header {
    height: var(--banner-rendered-h);
    min-height: var(--banner-rendered-h);
    display: flex;
    align-items: center;
    padding: 0 40px;
    margin: 12px 40px 0; /* Floats top header */
    flex-shrink: 0;
}

.page-heading, .hero {
    padding: 24px 32px;
    margin-bottom: 32px;
}

.card { padding: 24px; margin-bottom: 12px; }
.card:hover { border-color: var(--border-hover); }

/* Remove bottom margin from last paragraph in any panel */
.card p:last-child, 
.page-heading p:last-child, 
.hero p:last-child { margin-bottom: 0; }

.support-band {
    padding: 48px 40px;
    text-align: center;
    margin: 0 40px 64px; /* Floats above footer */
}

/* =========================================================
   TYPOGRAPHY DETAILS
========================================================= */
.header-brand { font-size: 1.6rem; font-weight: 400; letter-spacing: 2px; color: #fff; }
.header-brand span { color: #888; font-size: 0.9rem; margin-left: 8px; vertical-align: 0.3em; }

.page-heading h1, .hero h2 { font-size: 1.6rem; font-weight: 300; color: #fff; margin-bottom: 8px; }
.hero h2 { font-size: 2rem; margin-bottom: 12px; }
.page-heading .h1-sub { font-size: 0.8rem; font-weight: 300; vertical-align: 0.3em; color: inherit; }
.page-heading .subtitle { color: #888; font-size: 0.95rem; line-height: 1.7; }

.section-label { font-size: 0.7rem; letter-spacing: 3px; text-transform: uppercase; color: var(--text-dim); margin-bottom: 16px; }
h2.section-label { margin-top: 32px; margin-bottom: 12px; font-weight: 400; }

.card h4 { font-size: 1.05rem; color: #fff; margin-bottom: 8px; font-weight: 600; }
.text-dim { color: var(--text-dim); }
img.icon { vertical-align: bottom; }

/* =========================================================
   BUTTONS & INPUTS
========================================================= */
.btn, .donate-btn, .copy-btn, .form-group input, .form-group select, .form-group textarea, .form-status {
    border-radius: var(--rad-md);
    font-family: inherit;
}

.btn, .donate-btn, .copy-btn {
    display: inline-block;
    text-decoration: none;
    cursor: pointer;
    border: none;
    font-size: 0.85rem;
}
.btn:hover, .donate-btn:hover { opacity: 0.85; text-decoration: none; }

.btn { padding: 8px 18px; }
.btn-store { background: var(--accent); color: #fff; }
.btn-github { background: var(--border-light); color: #ccc; border: 1px solid #3a3a3a; }
.btn-primary { background: var(--accent); color: #fff; font-size: 0.95rem; padding: 10px 24px; }
.donate-btn { background: #ff5b5b; color: #fff; padding: 12px 32px; font-size: 0.95rem; }

/* =========================================================
   SIDEBAR & NAVIGATION
========================================================= */
#sidebar {
    width: var(--sidebar-w);
    flex-shrink: 0;
    background: #141414;
    border-right: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 200;
    scrollbar-width: thin;
    scrollbar-color: var(--border-light) transparent;
}
#sidebar-close-btn { display: none; }
#site-nav-placeholder { display: flex; flex-direction: column; flex: 1; min-height: 0; }

/* Kill browser focus lines */
#sidebar * { -webkit-tap-highlight-color: transparent; }
#sidebar *:focus, #sidebar *:focus-visible, #sidebar *:active { outline: none !important; box-shadow: none !important; }

/* Links override inside sidebar */
#sidebar a, #sidebar a:visited, #sidebar a:hover { color: var(--text-muted); text-decoration: none; }

.snav { display: flex; flex-direction: column; padding: 0 0 24px; flex: 1; }
.snav-divider { height: 1px; background: var(--border-light); margin: 10px 16px; flex-shrink: 0; }
.snav-group { font-size: 0.62rem; letter-spacing: 2.5px; text-transform: uppercase; color: var(--border-hover); padding: 10px 20px 4px; user-select: none; }

.snav-banner {
    display: block;
    width: calc(100% - 24px);
    aspect-ratio: 700 / 243;
    height: auto;
    object-fit: cover;
    margin: 12px 12px 10px 12px;
    border-radius: var(--rad-md);
    border: 1px solid var(--border-light);
}

/* Floating Rounded Menu Items */
.snav-link, .snav-app-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: 2px 12px;
    padding: 8px 12px;
    border-radius: var(--rad-md);
    font-size: 0.9rem;
    color: var(--text-muted);
    background: transparent;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: background 0.15s, color 0.15s;
    user-select: none;
}
.snav-link:hover, .snav-app-btn:hover { background: var(--bg-hover); color: #e0e0e0; }

.snav-link--coffee { color: #c8a96e !important; }
.snav-link--coffee:hover { color: #e8c97e !important; }

.snav-chevron { font-size: 1.1rem; color: var(--text-dim); transition: transform 0.2s; margin-left: 8px; }
.snav-app-btn[aria-expanded="true"] .snav-chevron { transform: rotate(90deg); }

.snav-app-label { display: flex; flex-direction: column; gap: 2px; flex: 1; color: #ccc; }
.snav-app-sub { font-size: 0.7rem; color: var(--text-dim); font-weight: 400; }

/* Submenu Links */
.snav-sub { display: none; flex-direction: column; padding: 4px 0; }
.snav-sub.open { display: flex; }
.snav-sub a {
    display: block;
    margin: 2px 12px;
    padding: 7px 12px 7px 24px;
    font-size: 0.85rem;
    color: #777;
    border-radius: var(--rad-md);
    transition: background 0.15s, color 0.15s;
}
.snav-sub a:hover { background: var(--bg-hover); color: #e0e0e0; }

.snav-app-placeholder .snav-app-btn { cursor: default; }
.snav-app-placeholder .snav-app-btn:hover { background: transparent; }
.snav-app-placeholder .snav-app-label { color: #333; }
.snav-app-placeholder .snav-app-sub { color: var(--border-light); }

/* =========================================================
   TABLES (SysBar Guide)
========================================================= */
.param-table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.param-table th { text-align: left; padding: 8px 12px 8px 0; color: var(--text-dim); font-size: 0.75rem; letter-spacing: 2px; text-transform: uppercase; border-bottom: 1px solid var(--border-light); font-weight: 600; }
.param-table td { padding: 8px 12px 8px 0; border-bottom: 1px solid var(--bg-body); }
.param-table tr:last-child td { border-bottom: none; }

/* =========================================================
   CRYPTO & DONATE
========================================================= */
.crypto-hint { color: #666; font-size: 0.82rem; margin-bottom: 16px; }
.crypto-card { cursor: pointer; }
.crypto-header { display: flex; align-items: center; gap: 10px; user-select: none; }
.crypto-icon { font-size: 1.3rem; }
.crypto-name { font-size: 1rem; color: #fff; }
.crypto-ticker { font-size: 0.8rem; color: var(--text-dim); margin-left: 2px; }
.expand-icon { margin-left: auto; color: var(--text-dim); font-size: 0.8rem; }
.crypto-detail { display: none; margin-top: 14px; }
.crypto-detail.open { display: block; }
.address-row { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.address-box { background: var(--bg-body); border: 1px solid var(--border-light); padding: 8px 12px; font-family: 'Courier New', monospace; font-size: 0.75rem; color: #aaa; flex: 1; word-break: break-all; }
.copy-btn { background: var(--border-light); border: 1px solid #3a3a3a; color: #ccc; padding: 8px 14px; white-space: nowrap; }
.copy-btn:hover { background: #333; color: #fff; }
.copy-btn.copied { background: #1a3a1a; color: #4caf50; border-color: #2a4a2a; }
.qr-container { text-align: center; margin-top: 4px; }
.qr-container img { border-radius: 6px; border: 3px solid #fff; display: block; margin: 0 auto; }
.qr-label { font-size: 0.75rem; color: var(--text-dim); margin-top: 8px; margin-bottom: 0; }
.donate-note { color: var(--text-dim); font-size: 0.82rem; text-align: center; margin-top: 16px; }

/* =========================================================
   FORMS (Tech Support)
========================================================= */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 0.9rem; color: #ccc; margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 10px 12px; background: var(--bg-surface); border: 1px solid var(--border-light); color: var(--text-main); font-size: 0.95rem; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--border-hover); }
.form-row { display: flex; gap: 16px; }
.form-row > .form-group { flex: 1; }
.checkbox-options { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 4px; }
.checkbox-option { display: flex; align-items: center; gap: 6px; }
.checkbox-option label { margin: 0; font-size: 0.9rem; cursor: pointer; }
.checkbox-option input[type="checkbox"] { width: auto; cursor: pointer; }
.field-hint { font-size: 0.82rem; color: #666; margin-top: 6px; margin-bottom: 0; }
.field-required { color: #ff5b5b; }
.form-status { display: none; padding: 12px 16px; font-size: 0.9rem; margin-bottom: 16px; }
.form-status.success { background: #1a3a1a; color: #4caf50; border: 1px solid #2a4a2a; }
.form-status.error { background: #5c2c2c; color: #739be5; border: 1px solid #4a2a2a; }

/* =========================================================
   GALLERY & LIGHTBOX
========================================================= */
.gallery-card { padding: 0; overflow: hidden; display: flex; flex-direction: column; }
.gallery-img-container { cursor: zoom-in; overflow: hidden; background: #000; display: flex; align-items: center; justify-content: center; border-radius: var(--rad-lg) var(--rad-lg) 0 0; }
.gallery-img { width: 100%; height: auto; display: block; transition: transform 0.2s ease; }
.gallery-img-container:hover .gallery-img { transform: scale(1.02); }
.gallery-caption { 
    padding: 16px 24px; margin: 0 !important; font-size: 0.9rem; color: #ccc; 
    border-top: 1px solid var(--border-light); background: var(--bg-surface); 
    font-family: 'Courier New', monospace; border-radius: 0 0 var(--rad-lg) var(--rad-lg);
}

/* Gallery 2-column grid — desktop only */
.gallery-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 0;
}
.gallery-grid .gallery-card { margin-bottom: 0; }

@media (max-width: 720px) {
    .gallery-grid { grid-template-columns: 1fr; }
}

/* Lightbox Overlay */
.lightbox {
    display: none; position: fixed; z-index: 9999; padding-top: 40px;
    left: 0; top: 0; width: 100%; height: 100%; overflow: hidden;
    background-color: rgba(0,0,0,0.9);
    opacity: 0; transition: opacity 0.3s ease;
    align-items: center; justify-content: center; flex-direction: column;
}
.lightbox.show { opacity: 1; }
.lightbox-content {
    max-width: 90%; max-height: 80vh;
    border-radius: var(--rad-md); box-shadow: 0 4px 24px rgba(0,0,0,0.5);
    object-fit: contain;
}
#lightbox-caption {
    margin-top: 16px; color: #ccc; font-family: 'Courier New', monospace; font-size: 1rem;
}
.lightbox-close {
    position: absolute; top: 20px; right: 35px;
    color: #f1f1f1; font-size: 40px; font-weight: bold; transition: 0.2s; cursor: pointer; user-select: none;
}
.lightbox-close:hover, .lightbox-close:focus { color: #bbb; text-decoration: none; }

/* =========================================================
   FOOTER
========================================================= */
footer { padding: 24px 40px; text-align: center; color: var(--border-hover); font-size: 0.8rem; border-top: 1px solid var(--bg-surface); }
footer a { color: var(--text-dim); }
footer a:hover { color: #888; }

/* =========================================================
   MOBILE RESPONSIVENESS (≤ 720px)
========================================================= */
.mobile-topbar { display: none; align-items: center; justify-content: space-between; background: var(--bg-surface); border-bottom: 1px solid var(--border-light); padding: 14px 20px; flex-shrink: 0; }
.mobile-topbar-brand { font-size: 1.1rem; letter-spacing: 1.5px; color: #fff; }

#mobile-menu-btn { background: none; border: none; cursor: pointer; display: flex; flex-direction: column; gap: 5px; padding: 4px; }
#mobile-menu-btn span { display: block; width: 22px; height: 2px; background: #aaa; border-radius: 2px; transition: background 0.2s; }

@media (max-width: 720px) {
    body { flex-direction: column; }
    #sidebar {
        position: fixed; top: 0; left: 0; height: 100vh; width: 260px;
        transform: translateX(-100%); transition: transform 0.25s ease;
        box-shadow: 4px 0 24px rgba(0,0,0,0.7);
    }
    #sidebar.open { transform: translateX(0); }
    .mobile-topbar { display: flex; }
    #sidebar-close-btn { display: flex; justify-content: flex-end; padding: 12px 16px; width: 100%; background: none; border: none; border-bottom: 1px solid var(--border-light); color: var(--text-dim); font-size: 1.5rem; cursor: pointer; flex-shrink: 0; }
    .site-header { display: none; }
    .support-band { margin: 0 20px 48px; }
}
@media (min-width: 721px) {
    .mobile-topbar { display: none; }
}