/* Menu Variables */
:root {
    --menu-height: 45px;
    --menu-bg-scrolled: var(--bg-color);
    --menu-text-color: var(--text-color);
}

.menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--menu-height);
    z-index: 1000;
    transition: background-color 0.3s ease, backdrop-filter 0.3s ease;
}

.menu.scrolled {
    background-color: var(--menu-bg-scrolled);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.menu-container {
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    /* Ensure valid stacking context */
    z-index: 1100;
    /* Above overlay */
}

/* ... existing styles ... */



/* Logo */
.menu-logo {
    font-size: 1.2rem;
    font-weight: 400;
    color: var(--menu-text-color);
    text-decoration: none;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    z-index: 1002;
    /* Above overlay */
}

/* Desktop Menu */
.menu-desktop {
    display: flex;
    gap: 3rem;
}

.menu-link {
    color: var(--menu-text-color);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 300;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.menu-link:hover {
    opacity: 1;
}

.theme-toggle-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    margin-left: 1rem;
    opacity: 0.7;
    transition: opacity 0.3s ease, transform 0.3s ease;
    display: flex;
    align-items: center;
    color: var(--menu-text-color);
}

.theme-toggle-btn:hover {
    opacity: 1;
    transform: rotate(15deg);
}

.theme-toggle-btn-mobile {
    background: none;
    border: none;
    cursor: pointer;
    margin-right: 1.5rem;
    margin-left: auto;
    /* Push to right */
    color: var(--menu-text-color);
    display: none;
    align-items: center;
    padding: 0;
    gap: 8px;
    /* Space between text and switch */
}

.menu-signup-mobile {
    display: none;
    min-height: 30px;
    padding: 0 0.78rem;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.045);
    color: var(--menu-text-color);
    font-family: inherit;
    font-size: 0.66rem;
    font-weight: 400;
    letter-spacing: 0.12em;
    line-height: 1;
    text-transform: uppercase;
    white-space: nowrap;
    cursor: pointer;
    opacity: 0;
    transform: translateY(-6px);
    transition: opacity 0.25s ease, transform 0.25s ease, background-color 0.25s ease, border-color 0.25s ease;
}

.menu-signup-mobile:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.28);
}

.theme-label {
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--menu-text-color);
    opacity: 0.5;
    transition: opacity 0.3s;
}

.theme-switch-track {
    width: 44px;
    height: 24px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: background 0.3s;
}

.theme-switch-thumb {
    width: 18px;
    height: 18px;
    background: #fff;
    border-radius: 50%;
    position: absolute;
    top: 2px;
    left: 2px;
    transition: transform 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
}

/* Light Mode Logic */
[data-theme="light"] .theme-label-day {
    opacity: 1;
    color: var(--accent-color);
}

[data-theme="light"] .theme-switch-thumb {
    transform: translateX(0);
    background: var(--text-muted);
}

[data-theme="light"] .theme-switch-track {
    background: rgba(0, 0, 0, 0.05);
    border-color: rgba(0, 0, 0, 0.1);
}

/* Dark Mode Logic */
[data-theme="dark"] .theme-label-night {
    opacity: 1;
    color: var(--accent-color);
}

[data-theme="dark"] .theme-switch-thumb {
    transform: translateX(20px);
    background: var(--accent-color);
}

[data-theme="dark"] .theme-switch-track {
    background: rgba(255, 255, 255, 0.05);
}

.theme-icon {
    display: none;
}

/* Logic: 
   Dark Theme -> Show Sun (to switch to Light)
   Light Theme -> Show Moon (to switch to Dark)
*/

/* Default (Dark) */
.icon-sun {
    display: block;
}

.icon-moon {
    display: none;
}

/* Light Theme Override */
[data-theme="light"] .icon-sun {
    display: none;
}

[data-theme="light"] .icon-moon {
    display: block;
}

/* Mobile Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 32px;
    height: 19px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1101;
    /* Highest priority */
    padding: 0;
    position: relative;
    opacity: 1 !important;
    /* Force visibility */
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 1.5px;
    /* Thinner but visible */
    background-color: var(--text-color);
    /* Strong contrast */
    transition: all 0.3s ease;
    border-radius: 2px;
    transform-origin: center;
    opacity: 1;
}

/* Mobile Overlay */
.menu-mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    min-height: 100vh;
    min-height: 100dvh;
    padding: calc(var(--menu-height) + 1.1rem) 1.5rem max(1.5rem, env(safe-area-inset-bottom));
    background-color: var(--bg-color);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.32s ease, visibility 0.32s ease;
    z-index: 1001;
}

.menu-mobile-close {
    position: fixed;
    top: 0;
    right: 10px;
    z-index: 1003;
    display: none;
    width: 44px;
    height: 44px;
    border: 0;
    background: transparent;
    cursor: pointer;
}

.menu-mobile-close span {
    position: absolute;
    left: 8px;
    top: 21px;
    display: block;
    width: 28px;
    height: 1.5px;
    border-radius: 2px;
    background: var(--text-color);
}

.menu-mobile-close span:first-child {
    transform: rotate(45deg);
}

.menu-mobile-close span:last-child {
    transform: rotate(-45deg);
}

.menu-mobile-links {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: clamp(0.65rem, 2.1vh, 1.05rem);
    width: 100%;
    max-height: calc(100dvh - var(--menu-height) - 2.6rem);
    padding: 0.75rem 0 0;
    overflow-y: auto;
    transform: translateY(6px);
    transition: transform 0.25s ease;
}

.menu-mobile-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: 0.2rem 0.5rem;
    font-size: clamp(1.1rem, 5.2vw, 1.45rem);
    color: var(--menu-text-color);
    text-decoration: none;
    font-weight: 300;
    line-height: 1.1;
    letter-spacing: 0.01em;
    text-align: center;
    opacity: 0;
    transform: translateY(12px);
    transition: color 0.2s ease, opacity 0.28s ease, transform 0.28s ease;
}

.menu-mobile-link:hover,
.menu-mobile-link:focus {
    color: var(--accent-color);
    opacity: 1;
    outline: none;
}

.signup-choice-modal {
    position: fixed;
    inset: 0;
    z-index: 1200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.25rem;
    background: rgba(0, 0, 0, 0.64);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

.signup-choice-modal.active {
    opacity: 1;
    visibility: visible;
}

.signup-choice-dialog {
    position: relative;
    width: min(100%, 360px);
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    background: var(--bg-color);
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
    transform: translateY(12px);
    transition: transform 0.25s ease;
}

.signup-choice-modal.active .signup-choice-dialog {
    transform: translateY(0);
}

.signup-choice-close {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    width: 36px;
    height: 36px;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    background: transparent;
    color: var(--menu-text-color);
    font-size: 1.4rem;
    line-height: 1;
    cursor: pointer;
}

.signup-choice-title {
    margin: 0 2.5rem 1rem 0;
    color: var(--text-color);
    font-size: 1.25rem;
    font-weight: 300;
}

.signup-choice-actions {
    display: grid;
    gap: 0.75rem;
}

.signup-choice-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0.9rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-color);
    font-size: 0.82rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.signup-choice-link:hover {
    background: var(--text-color);
    color: var(--bg-color);
}

.signup-choice-link-max {
    border-color: rgba(163, 177, 138, 0.55);
}

/* Active State (Mobile Open) */
.menu.menu-open .menu-mobile-overlay {
    opacity: 1;
    visibility: visible;
}

.menu.menu-open .menu-mobile-close {
    display: block;
}

.menu.menu-open .menu-toggle {
    visibility: hidden;
}

.menu.menu-open .menu-mobile-link {
    opacity: 1;
    transform: translateY(0);
}

.menu.menu-open .menu-mobile-links {
    transform: translateY(0);
}

/* Staggered animation for links */
.menu.menu-open .menu-mobile-link:nth-child(1) {
    transition-delay: 0.04s;
}

.menu.menu-open .menu-mobile-link:nth-child(2) {
    transition-delay: 0.07s;
}

.menu.menu-open .menu-mobile-link:nth-child(3) {
    transition-delay: 0.1s;
}

.menu.menu-open .menu-mobile-link:nth-child(4) {
    transition-delay: 0.13s;
}

.menu.menu-open .menu-mobile-link:nth-child(5) {
    transition-delay: 0.16s;
}

.menu.menu-open .menu-mobile-link:nth-child(6) {
    transition-delay: 0.19s;
}

.menu.menu-open .menu-mobile-link:nth-child(7) {
    transition-delay: 0.22s;
}

.menu.menu-open .menu-mobile-link:nth-child(8) {
    transition-delay: 0.25s;
}

/* Hamburger Animation */
.menu.menu-open .menu-toggle span:first-child {
    transform: translateY(10.5px) rotate(45deg);
}

.menu.menu-open .menu-toggle span:nth-child(2) {
    opacity: 0;
}

.menu.menu-open .menu-toggle span:last-child {
    transform: translateY(-10.5px) rotate(-45deg);
}

/* Responsive */
@media (max-width: 768px) {
    .menu-desktop {
        display: none;
    }

    .menu-signup-mobile {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        opacity: 1;
        transform: translateY(0);
    }

    .menu-toggle {
        display: flex;
    }

    .theme-toggle-btn-mobile {
        display: flex;
        /* Show on mobile */
    }

    .signup-choice-modal {
        min-height: 100dvh;
        align-items: flex-start;
        padding-top: max(5.5rem, env(safe-area-inset-top));
        overflow-y: auto;
    }
}

@media (max-width: 380px) {
    .menu-container {
        padding-inline: 1rem;
    }

    .menu-signup-mobile {
        min-height: 28px;
        padding-inline: 0.58rem;
        font-size: 0.58rem;
        letter-spacing: 0.09em;
    }

    .theme-toggle-btn-mobile {
        margin-right: 0.9rem;
        gap: 6px;
    }

    .theme-switch-track {
        width: 38px;
        height: 22px;
    }

    .theme-switch-thumb {
        width: 16px;
        height: 16px;
    }

    [data-theme="dark"] .theme-switch-thumb {
        transform: translateX(16px);
    }

    .menu-toggle {
        width: 28px;
        height: 18px;
    }

    .menu-mobile-close {
        right: 0;
    }

    .menu-mobile-link {
        min-height: 44px;
        font-size: 0.84rem;
    }
}