header {
    position: relative;
    background:
        radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.03) 0%, transparent 60%),
        /* Subtle center glow */
        radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        /* Dot matrix noise */
        linear-gradient(135deg, var(--main-color), var(--main-color-dark));
    /* Base gradient */
    background-size: 100% 100%, 30px 30px, 100% 100%;
    backdrop-filter: blur(8px);
    padding: 0 10px 10px;
    box-shadow: 0 0 20px var(--glow);
    border-bottom-width: 4px;
    /* Thicker border */
    border-bottom-style: solid;
    border-bottom-color: #000;
    /* Moves the visual divider up */
}

/* .header-hero and .hero-title - Replaces old h1 styles */
.hero-title {
    font-size: 2.2rem;
    margin: 10px 0 5px;
    width: 100%;
    text-align: center;
    /* Tighter margins */
    color: #ffffff;
    text-shadow: 0 0 15px var(--glow), 0 0 30px rgba(0, 0, 0, 0.4);
    font-weight: 800;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    background: linear-gradient(to right, #fff, var(--main-color));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: glow-pulse 3s infinite alternate;
}

@keyframes glow-pulse {
    from {
        filter: drop-shadow(0 0 5px var(--glow));
    }

    to {
        filter: drop-shadow(0 0 15px var(--glow));
    }
}

header p {
    font-size: 1.1rem;
    margin: 0 0 5px 0;
    /* Reduced from 25px */
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    max-width: 750px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.main-nav ul {
    display: flex;
    justify-content: center;
    list-style: none;
    gap: 15px;
    padding: 0;
    margin: 0 0 10px;
    flex-wrap: wrap;
    align-items: center;
}

.main-nav a {
    color: #ffffff;
    text-decoration: none;
    font-weight: 800;
    /* Increased weight */
    padding: 4px 10px;
    border-radius: 4px;
    transition: all 0.3s ease;
    text-align: center;
    display: inline-flex;
    align-items: center;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
    /* Added glow */
    font-size: 1rem;
    /* Increased size */
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.main-nav a:hover,
.main-nav a.active {
    background: rgba(0, 0, 0, 0.35);
    box-shadow: 0 0 6px var(--hover-glow);
    color: #fff;
}

.main-nav a.active {
    color: #fff;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: rgba(0, 0, 0, 0.6);
    /* Dark background for contrast */
    border: 2px solid rgba(255, 255, 255, 0.8);
    /* White border */
    border-radius: 6px;
    color: #ffffff;
    /* White icon */
    font-size: 1.6rem;
    cursor: pointer;
    padding: 8px 14px;
    transition: all 0.3s ease;
    margin-top: 15px;
    align-self: flex-start;
    margin-left: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.menu-toggle:hover,
.menu-toggle:active,
.menu-toggle[aria-expanded="true"] {
    background: var(--main-color);
    border-color: #ffffff;
    color: #ffffff;
    box-shadow: 0 0 15px var(--glow);
    transform: scale(1.05);
}



/* Responsive Design */
@media (max-width: 768px) {
    header {
        display: flex;
        flex-direction: column;
        align-items: center;
        padding-bottom: 5px;
    }

    .header-top-bar {
        width: 100%;
        order: -1;
        /* Definitely First */
    }

    #theme-picker-placeholder {
        order: 0;
        /* Second */
        width: 100%;
        margin-top: 5px;
    }

    .menu-toggle {
        display: block;
        order: 1;
        /* Third */
        margin-top: 10px;
        align-self: flex-start;
        margin-left: 20px;
        width: fit-content;
    }

    /* Navigation Menu Logic */
    .main-nav {
        order: 2;
        /* Fourth */
        width: 100%;
        overflow: hidden;
        transition: max-height 0.4s ease-in-out;
        max-height: 0;
    }

    /* ... rest of nav styles ... */
    .main-nav.open {
        max-height: 1000px;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 15px;
        padding: 10px 0 20px 0;
        width: 100%;
        align-items: center;
    }

    .main-nav a {
        display: block;
        width: 100%;
        text-align: center;
        padding: 10px;
        font-size: 1.1rem;
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.3rem;
    }

    header h2 {
        font-size: 1rem;
    }

    header p {
        font-size: 0.85rem;
    }

    header {
        padding: 15px 10px;
    }
}

@media (max-height: 600px) and (orientation: landscape) {
    header {
        padding: 15px;
    }

    .main-nav ul {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 6px;
    }

    .main-nav a {
        padding: 5px 10px;
        font-size: 0.85rem;
    }
}

@media (hover: none) and (pointer: coarse) {
    .main-nav a {
        min-height: 44px;
        min-width: 44px;
    }
}

/* Header Top Bar Elements */
.header-top-bar {
    position: relative;
    width: 100%;
    padding: 5px 30px;
    /* Reduced top/bottom padding */
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-sizing: border-box;
    pointer-events: auto;
    z-index: 10;
}

/* .logo and .header-controls inherit pointer-events: auto */

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: #ffffff;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-img {
    height: 3.5rem;
    width: auto;
    object-fit: contain;
    transition: transform 0.3s ease, filter 0.3s ease;
    filter: drop-shadow(0 0 2px var(--main-color)) drop-shadow(0 0 8px var(--glow));
    will-change: transform, filter;
}

.logo-img:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 0 5px var(--main-color)) drop-shadow(0 0 15px var(--glow));
}

.header-controls {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: center;
    gap: 8px;
}

.auth-controls {
    display: flex;
    align-items: center;
    gap: 20px;
}

.header-datetime {
    color: #ffffff;
    font-size: 0.9rem;
    font-weight: 600;
    text-shadow: 0 0 5px var(--glow), 0 0 10px var(--glow);
    font-family: 'Outfit', sans-serif;
    /* Ensure consistent font */
    letter-spacing: 0.5px;
}

.lang-switcher {
    color: rgba(255, 255, 255, 0.7);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
}

.lang-switcher .lang-option {
    transition: color 0.3s ease;
}

.lang-switcher .lang-option:hover,
.lang-switcher .lang-option.active {
    color: #ffffff;
}

.auth-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #ffffff;
    padding: 6px 16px;
    border-radius: 20px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    transform: translateZ(0);
    /* Force hardware acceleration for iOS */
}

.auth-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    box-shadow: 0 0 10px var(--glow, rgba(255, 255, 255, 0.5));
    border-color: #ffffff;
}

.signup-btn {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.6);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.1);
}

.signup-btn:hover {
    background: rgba(255, 255, 255, 0.35);
    border-color: #ffffff;
    box-shadow: 0 0 15px var(--glow, rgba(255, 255, 255, 0.6));
}

/* Responsive adjustments for top bar */
@media (max-width: 768px) {
    header {
        padding-top: 0;
    }

    .header-top-bar {
        padding: 15px 15px;
    }

    .logo {
        font-size: 1.4rem;
    }

    .header-controls {
        gap: 10px;
    }

    .auth-controls {
        gap: 8px;
    }

    .auth-btn {
        padding: 4px 12px;
        font-size: 0.85rem;
    }
}