:root {
    color-scheme: light;
    --bg: #f6f7f3;
    --bg-accent: #dff3e4;
    --card: #ffffff;
    --text: #1c1c1c;
    --muted: #55605c;
    --primary: #0b8f7f;
    --primary-strong: #0a7a6c;
    --shadow: rgba(11, 16, 19, 0.15);
    --ring: rgba(11, 143, 127, 0.25);
    --border: rgba(0, 0, 0, 0.08);
}

body.dark {
    color-scheme: dark;
    --bg: #0f1413;
    --bg-accent: #1a2b28;
    --card: #1c2322;
    --text: #f5f7f5;
    --muted: #c3cbc8;
    --primary: #44d7c5;
    --primary-strong: #2cc1ae;
    --shadow: rgba(0, 0, 0, 0.4);
    --ring: rgba(68, 215, 197, 0.35);
    --border: rgba(255, 255, 255, 0.12);
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Space Grotesk', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    background: radial-gradient(circle at top, var(--bg-accent), var(--bg));
    color: var(--text);
    transition: background 0.4s ease, color 0.4s ease;
    padding: 24px;
}

.container {
    width: min(520px, 92vw);
    text-align: center;
    padding: 40px;
    border-radius: 20px;
    background-color: var(--card);
    box-shadow: 0 18px 35px var(--shadow);
    border: 1px solid var(--border);
    transition: width 0.35s ease, background-color 0.4s ease, box-shadow 0.4s ease;
}

body.wide .container {
    width: min(940px, 94vw);
}

.top-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 28px;
    flex-wrap: wrap;
}

h1 {
    color: var(--text);
    margin: 0;
    font-size: clamp(24px, 4vw, 36px);
    letter-spacing: -0.02em;
}

.controls {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.toggle-button {
    padding: 10px 16px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, border-color 0.2s ease, color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.toggle-button:hover {
    transform: translateY(-1px);
    border-color: var(--primary);
    box-shadow: 0 6px 16px var(--ring);
}

.toggle-button[aria-pressed="true"] {
    background: var(--primary);
    color: #ffffff;
    border-color: transparent;
}

.lotto-numbers-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 30px;
    min-height: 76px;
}

body.wide .lotto-numbers-container {
    justify-content: space-between;
}

lotto-ball {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    font-weight: bold;
    color: #fff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    animation: pop 0.4s ease;
}

.generate-button {
    padding: 15px 30px;
    border: none;
    border-radius: 12px;
    background-color: var(--primary);
    color: #ffffff;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s, box-shadow 0.3s, transform 0.2s ease;
    box-shadow: 0 10px 20px var(--ring);
}

.generate-button:hover {
    background-color: var(--primary-strong);
    transform: translateY(-1px);
}

.generate-button:active {
    transform: translateY(0);
    box-shadow: 0 6px 12px var(--ring);
}

@keyframes pop {
    from {
        transform: scale(0.8);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

@media (max-width: 600px) {
    .container {
        padding: 28px 20px;
    }

    .toggle-button {
        width: 100%;
        justify-content: center;
    }

    .controls {
        width: 100%;
    }

    body.wide .lotto-numbers-container {
        justify-content: center;
    }
}