/* =================================================================
   THEME TOGGLE (PLANETARY ORBIT VARIANT)
   Fixed bottom-left button for switching light/dark mode
   ================================================================= */

.theme-toggle {
    position: fixed;
    bottom: var(--page-padding);
    left: var(--page-padding);
    width: 44px;
    height: 44px;
    border: 1px solid var(--color-neutral-200);
    /* Orbit path ring */
    background: transparent;
    cursor: pointer;
    z-index: 100;
    padding: 0;
    border-radius: 50%;
    transition: border-color 0.6s ease, transform 0.2s ease;
}

.theme-toggle:hover {
    transform: scale(1.05);
    border-color: var(--color-neutral-400);
}

.theme-toggle:active {
    transform: scale(0.95);
}

/* The Center Body (Sun <-> Dark Hole/Moon) */
.orbit-center {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 12px;
    height: 12px;
    background: var(--color-neutral-900);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    box-shadow: none;
    transition: background-color 0.6s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.6s ease, box-shadow 0.6s ease;
}

/* The Arm holding the Planet */
.orbit-arm {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    /* Spans full width of container */
    height: 100%;
    background: transparent;
    border-radius: 50%;
    transform: translate(-50%, -50%) rotate(0deg);
    transition: transform 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
    /* Elastic/Overshoot feel */
    pointer-events: none;
}

/* The Orbiting Planet */
.orbit-planet {
    position: absolute;
    right: -3px;
    /* Offset so center aligns with border (path) */
    top: 50%;
    width: 6px;
    height: 6px;
    background: var(--text-primary);
    border-radius: 50%;
    transform: translateY(-50%);
    box-shadow: 0 0 0 2px var(--bg-page);
    /* Halo to separate from track if needed */
    transition: background-color 0.6s;
}

/* 
 * STATE LOGIC
 * Light Mode: Center = Sun (Orange). Planet position = 0deg.
 * Dark Mode: Center = Dark. Planet position = 180deg.
 */

[data-theme="dark"] .theme-toggle {
    border-color: var(--color-neutral-800);
}

[data-theme="dark"] .orbit-center {
    background: var(--color-neutral-100);
    border-color: transparent;
    /* Becomes pale/white like moon or dark star? */
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.4);
}

/* [data-theme="dark"] .orbit-arm removed to allow JS continuous rotation */

/* Default: Hide mobile toggle on desktop */
.theme-toggle--mobile {
    display: none;
}

/* Responsive */
@media (max-width: 768px) {

    /* Hide desktop toggle on mobile */
    .theme-toggle--desktop {
        display: none;
    }

    /* Show and style mobile toggle */
    .theme-toggle--mobile {
        display: block;
        position: relative;
        bottom: auto;
        left: auto;
        width: 32px;
        height: 32px;
        border: 1px solid var(--color-neutral-200);
        background: var(--bg-page);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        margin-right: 0;
    }

    .theme-toggle--mobile .orbit-center {
        width: 7px;
        height: 7px;
    }

    .theme-toggle--mobile .orbit-planet {
        width: 4px;
        height: 4px;
        right: -2px;
    }

    [data-theme="dark"] .theme-toggle--mobile {
        box-shadow: none;
        border-color: var(--color-neutral-800);
    }
}

/* Tooltip Label */
/* Tooltip Label */
.theme-toggle-label {
    position: absolute;
    left: 100%;
    top: 50%;
    transform: translateY(-50%) translateX(10px);
    margin-left: 12px;
    background: var(--color-neutral-100);
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, transform 0.2s ease;
    pointer-events: none;
    /* No border, no shadow */
}

[data-theme="dark"] .theme-toggle-label {
    background: rgba(255, 255, 255, 0.1);
}

.theme-toggle:hover .theme-toggle-label {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(0);
}

@media (max-width: 768px) {
    .theme-toggle-label {
        display: none;
    }
}