:root {
    /* Glassmorphism Variables */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.1);
    --text-color: #ffffff;
    --accent-color: #4facfe;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family);
    color: var(--text-color);
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    padding: 1rem;
    background-color: #1a1a1a; /* Fallback */
    align-items: center; /* Center vertically too */
    justify-content: center;
}

.background-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background-image: url('assets/background-desktop-large.abd5c8a0.jpg');
    background-image: image-set(url('assets/background-desktop-large.95e7311a.webp') type('image/webp'),
            url('assets/background-desktop-large.abd5c8a0.jpg') type('image/jpeg'));
    background-size: cover;
    background-position: center;
    /* Blur effect is optional but often enhances glassmorphism contrast */
    /* filter: blur(5px); */
}

/* Responsive Backgrounds */
@media (max-width: 1366px) {
    .background-container {
        background-image: url('assets/background-desktop-medium.4330a854.jpg');
        background-image: image-set(url('assets/background-desktop-medium.2e98ae81.webp') type('image/webp'),
                url('assets/background-desktop-medium.4330a854.jpg') type('image/jpeg'));
    }
}

@media (max-width: 1024px) {
    .background-container {
        background-image: url('assets/background-tablet.704ef678.jpg');
        background-image: image-set(url('assets/background-tablet.505f7edd.webp') type('image/webp'),
                url('assets/background-tablet.704ef678.jpg') type('image/jpeg'));
    }
}

@media (max-width: 768px) {
    .background-container {
        background-image: url('assets/background-mobile.294ed4e5.jpg');
        background-image: image-set(url('assets/background-mobile.b9029fe6.webp') type('image/webp'),
                url('assets/background-mobile.294ed4e5.jpg') type('image/jpeg'));
    }
}

/* Main Glass Container */
.glass-container {
    margin: auto;
    width: 90%;
    max-width: 800px;
    padding: 2.5rem;

    /* Glass Effect */
    background: linear-gradient(
        135deg,
        rgba(255, 255, 255, 0.1),
        rgba(255, 255, 255, 0.05)
    );
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow: var(--glass-shadow);
    text-align: center;
}

header {
    margin-bottom: 2.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

h1 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.5px;
}

.timestamp {
    font-size: 0.95rem;
    opacity: 0.75;
    font-weight: 300;
    letter-spacing: 0.5px;
}

.weather-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1.5rem;
}

/* Glass Cards */
.card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;

    /* Nested Glass Effect */
    background: var(--card-bg);
    border-radius: 16px;
    border: 1px solid var(--card-border);
    border-top: 1px solid rgba(255, 255, 255, 0.3);
    border-left: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    transition: transform 0.3s ease, background 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
}

.icon {
    font-size: 2.8rem;
    margin-bottom: 0.75rem;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

.label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    opacity: 0.9;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: rgba(255, 255, 255, 0.8);
}

.value {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.unit {
    font-size: 0.9rem;
    opacity: 0.7;
    font-weight: 400;
}

.version-display {
    position: fixed;
    bottom: 10px;
    right: 15px;
    font-size: 0.75rem;
    opacity: 0.4;
    z-index: 1000;
    pointer-events: none;
    font-family: monospace;
}

/* Mobile Adjustments */
@media (max-width: 600px) {
    .glass-container {
        padding: 1.5rem;
        width: 95%;
        border-radius: 20px;
    }

    h1 {
        font-size: 2.2rem;
    }

    .weather-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .card {
        padding: 1rem;
        border-radius: 12px;
    }

    .icon {
        font-size: 2.2rem;
        margin-bottom: 0.5rem;
    }

    .value {
        font-size: 1.8rem;
    }

    .label {
        font-size: 0.7rem;
        letter-spacing: 1px;
    }
}