/* ── Base ── */
*, *::before, *::after {
    box-sizing: border-box;
    font-family: 'Comic Sans MS', 'Chalkboard SE', cursive !important;
}

body {
    font-family: 'Comic Sans MS', 'Chalkboard SE', cursive;
    margin: 0;
    padding: 0;
    background: #24273a; /* Macchiato Base */
    color: #cad3f5;     /* Macchiato Text */
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ── Header ── */
header {
    background: #181926; /* Macchiato Crust */
    color: #cad3f5;
    padding: 1rem 2rem;
    flex-shrink: 0;
}

header h1 {
    margin: 0;
    font-size: 1.5rem;
}

/* ── Page wrapper: sidebar + content side by side ── */
#page-wrapper {
    display: flex;
    flex: 1;
}

/* ── Sidebar Navigation ── */
#main-nav {
    background: #1e2030; /* Macchiato Mantle */
    width: 220px;
    min-width: 220px;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    flex-shrink: 0;
    z-index: 100;
}

#main-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

#main-nav > ul > li > a,
#main-nav > ul > li > span {
    display: block;
    padding: 0.75rem 1.25rem;
    color: #b8c0e0; /* Macchiato Subtext1 */
    text-decoration: none;
    cursor: pointer;
    white-space: nowrap;
    font-size: 0.95rem;
    border-bottom: 1px solid #363a4f; /* Macchiato Surface0 */
}

#main-nav > ul > li > a:hover,
#main-nav > ul > li > span:hover {
    color: #cad3f5; /* Macchiato Text */
    background: #363a4f; /* Macchiato Surface0 */
}

/* Sub-items */
#main-nav ul ul {
    display: none;
    list-style: none;
    padding: 0;
    margin: 0;
    background: #181926; /* Macchiato Crust */
}

#main-nav ul ul li a {
    display: block;
    padding: 0.55rem 1.25rem 0.55rem 2rem;
    color: #a5adcb; /* Macchiato Subtext0 */
    text-decoration: none;
    font-size: 0.88rem;
    border-bottom: 1px solid #1e2030; /* Macchiato Mantle */
}

#main-nav ul ul li a:hover {
    color: #cad3f5; /* Macchiato Text */
    background: #363a4f; /* Macchiato Surface0 */
}

/* Toggle open class instead of hover so it works on click/touch */
#main-nav li.has-dropdown.open > ul {
    display: block;
}

/* dropdown arrow indicator */
#main-nav li.has-dropdown > span::after {
    content: " ▸";
    float: right;
    font-size: 0.75rem;
    color: #6e738d; /* Macchiato Overlay0 */
}

#main-nav li.has-dropdown.open > span::after {
    content: " ▾";
}

/* ── Content area ── */
#content-area {
    flex: 1;
    min-width: 0;
}

main {
    max-width: 860px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

article {
    background: #363a4f; /* Macchiato Surface0 */
    padding: 2rem;
    border-radius: 4px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.4);
}

article h1 { font-size: 1.4rem; margin-top: 0; }
article h2 { font-size: 1.1rem; margin-top: 1.5rem; }

article ul {
    padding-left: 1.5rem;
    line-height: 1.8;
}

article a {
    color: #8aadf4; /* Macchiato Blue */
}

article a:hover {
    color: #c6a0f6; /* Macchiato Mauve */
}

/* ── Footer ── */
footer {
    text-align: center;
    padding: 1.25rem;
    color: #6e738d; /* Macchiato Overlay0 */
    font-size: 0.85rem;
    border-top: 1px solid #363a4f; /* Macchiato Surface0 */
    margin-top: 3rem;
}

/* ── Responsive: collapse sidebar on small screens ── */
@media (max-width: 640px) {
    #page-wrapper { flex-direction: column; }

    #main-nav {
        width: 100%;
        height: auto;
        position: relative;
    }

    #main-nav > ul {
        display: flex;
        flex-wrap: wrap;
    }

    #main-nav ul ul {
        position: absolute;
        background: #363a4f; /* Macchiato Surface0 */
        z-index: 200;
        min-width: 200px;
        box-shadow: 0 4px 8px rgba(0,0,0,0.5);
    }
}

/* Spacing helper for separated lists in articles */
.spaced-list {
    margin-bottom: 1rem;
}

/* Theme & Font Toggles ----------------------------------------------------------------- */
.nav-toggles {
    display: flex;
    gap: 0.5rem;
    padding: 0.65rem 1rem;
    border-bottom: 1px solid #363a4f;
}
.nav-toggles button {
    flex: 1;
    background: transparent;
    border: 1px solid rgba(110,115,141,0.4);
    color: #b8c0e0;
    padding: 0.3rem 0.4rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
    white-space: nowrap;
}
.nav-toggles button:hover {
    color: #cad3f5;
    background: #363a4f;
}

/* Light theme overrides (applied by adding .light-theme to <body>) */
body.light-theme {
    background: #f7fafc; /* light */
    color: #1f2937; /* dark text */
}
body.light-theme header {
    background: #ffffff;
    color: #1f2937;
}
body.light-theme #main-nav {
    background: #f1f5f9;
}
body.light-theme #main-nav > ul > li > a,
body.light-theme #main-nav > ul > li > span {
    color: #374151;
}
body.light-theme article {
    background: #ffffff;
    color: #111827;
}
body.light-theme article a { color: #2563eb; }
body.light-theme footer { color: #6b7280; border-top-color: #e6edf3; }

/* Regular font class (applied by adding .regular-font to <body>) */
body.regular-font, body.regular-font * {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif !important;
}

/* Light theme: nav-toggles border colour */
body.light-theme .nav-toggles { border-bottom-color: #e5e7eb; }
body.light-theme .nav-toggles button { color: #374151; border-color: rgba(55,65,81,0.3); }
body.light-theme .nav-toggles button:hover { background: #e5e7eb; }