:root {
    /* Light mode variables */
    --background: hsl(200, 30%, 97%);
    --foreground: hsl(200, 50%, 20%);
    --card: hsla(0, 0%, 100%, 0.5);
    --card-foreground: hsl(200, 50%, 20%);
    --primary: hsl(200, 85%, 45%);
    --primary-foreground: hsl(0, 0%, 100%);
    --secondary: hsl(37, 95%, 58%); /* Amber/orange color */
    --secondary-foreground: hsl(200, 50%, 20%);
    --muted: hsl(200, 30%, 96%);
    --muted-foreground: hsl(200, 30%, 40%);
    --accent: hsl(200, 85%, 45%);
    --accent-foreground: hsl(0, 0%, 100%);
    --border: hsla(200, 30%, 90%, 0.2);
    --radius: 0.75rem;
}

@media (prefers-color-scheme: dark) {
    :root {
        --background: hsl(200, 30%, 8%);
        --foreground: hsl(200, 20%, 96%);
        --card: hsla(200, 25%, 15%, 0.4);
        --card-foreground: hsl(200, 15%, 85%);
        --primary: hsl(200, 70%, 40%);
        --primary-foreground: hsl(0, 0%, 100%);
        --secondary: hsl(37, 92%, 50%); /* Darker amber for dark mode */
        --secondary-foreground: hsl(200, 20%, 96%);
        --muted: hsl(200, 30%, 20%);
        --muted-foreground: hsl(200, 30%, 65%);
        --accent: hsl(200, 70%, 40%);
        --accent-foreground: hsl(0, 0%, 100%);
        --border: hsla(200, 30%, 20%, 0.2);
    }
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    border-color: var(--border);
    font-family: 'Geist', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

@keyframes gradient-move-1 {
    0% {
        transform: translate(-50%, -50%) scale(1) rotate(0deg);
    }
    25% {
        transform: translate(-50%, -50%) scale(1.05) rotate(90deg);
    }
    50% {
        transform: translate(-50%, -50%) scale(0.95) rotate(180deg);
    }
    75% {
        transform: translate(-50%, -50%) scale(1.05) rotate(270deg);
    }
    100% {
        transform: translate(-50%, -50%) scale(1) rotate(360deg);
    }
}

@keyframes gradient-move-2 {
    0% {
        transform: translate(-50%, -50%) scale(0.95) rotate(0deg);
    }
    25% {
        transform: translate(-50%, -50%) scale(1) rotate(-90deg);
    }
    50% {
        transform: translate(-50%, -50%) scale(1.05) rotate(-180deg);
    }
    75% {
        transform: translate(-50%, -50%) scale(1) rotate(-270deg);
    }
    100% {
        transform: translate(-50%, -50%) scale(0.95) rotate(-360deg);
    }
}

body {
    font-family: 'Geist', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--background);
    color: var(--foreground);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    text-align: center;
    padding: 20px;
    position: relative;
    overflow: hidden;
    isolation: isolate;
}

/* Dot grid background */
body {
    background-image: url('grid.svg');
    background-size: 20px 20px;
    background-position: center;
}

/* Spinning orb gradient */
.orb {
    position: fixed;
    width: 120vmax;
    height: 120vmax;
    top: 50%;
    left: 50%;
    border-radius: 50%;
    pointer-events: none;
    z-index: -10;
    will-change: transform;
    filter: blur(40px);
}

.orb.primary {
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
    opacity: 0.4;
    animation: gradient-move-1 30s ease-in-out infinite;
}

.container {
    background-color: var(--card);
    color: var(--card-foreground);
    padding: 50px;
    border-radius: var(--radius);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    max-width: 600px;
    width: 100%;
    margin-bottom: 30px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    z-index: 10;
}

.container::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    border-radius: inherit;
    background: linear-gradient(
        to bottom right,
        transparent 0%,
        rgba(255, 255, 255, 0.05) 50%,
        transparent 100%
    );
    opacity: 0;
    transition: opacity 0.3s ease;
}

.container:hover {
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.08);
    transform: translateY(-5px);
}

.container:hover::before {
    opacity: 1;
}

h1 {
    font-size: 2rem;
    margin-bottom: 30px;
    font-weight: 500;
    color: var(--foreground);
    letter-spacing: -0.02em;
}

.date {
    margin: 30px 0;
}

h2 {
    font-size: 3.5rem;
    margin-bottom: 5px;
    color: var(--foreground);
    letter-spacing: -0.03em;
}

#october-day {
    font-weight: 700;
    color: var(--primary);
    position: relative;
    display: inline-block;
}

#october-day::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.container:hover #october-day::after {
    transform: scaleX(1);
}

.year {
    font-size: 1.5rem;
    color: var(--muted-foreground);
    letter-spacing: -0.02em;
}

.subtitle {
    font-style: italic;
    margin-top: 20px;
    color: var(--muted-foreground);
}

footer {
    color: var(--muted-foreground);
    font-size: 0.9rem;
    margin-top: 20px;
    position: relative;
    z-index: 10;
}

.buttons {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 24px;
}

.share-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: var(--primary);
    color: var(--primary-foreground);
    border: none;
    border-radius: var(--radius);
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.share-button:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.share-button:active {
    transform: translateY(0);
}

.share-button svg {
    transition: transform 0.2s ease;
}

.share-button:hover svg {
    transform: translateY(-2px);
}

.why-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: var(--secondary);
    color: var(--secondary-foreground);
    border: none;
    border-radius: var(--radius);
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.why-button:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.why-button:active {
    transform: translateY(0);
}

.why-button svg {
    transition: transform 0.2s ease;
}

.why-button:hover svg {
    transform: rotate(12deg);
}

@media (max-width: 600px) {
    .container {
        padding: 30px;
    }
    
    h1 {
        font-size: 1.5rem;
    }
    
    h2 {
        font-size: 2.5rem;
    }
    
    .share-button, .why-button {
        padding: 8px 12px;
        font-size: 13px;
    }
    
    .buttons {
        flex-direction: column;
        gap: 8px;
    }
}