:root {
    color-scheme: light;
    --bg-color: #f3f4f6;
    --panel-color: #ffffff;
    --text-color: #111827;
    --muted-color: #6b7280;
    --shadow-color: rgba(15, 23, 42, 0.12);
    --number-color: #16a34a;
    --button-color: #2563eb;
    --button-hover: #1d4ed8;
    --toggle-bg: #e5e7eb;
    --toggle-text: #111827;
    --input-bg: #ffffff;
    --input-border: #d1d5db;
    --comment-bg: #f8fafc;
}

body.dark-mode {
    color-scheme: dark;
    --bg-color: #0f172a;
    --panel-color: #111827;
    --text-color: #f9fafb;
    --muted-color: #cbd5e1;
    --shadow-color: rgba(15, 23, 42, 0.45);
    --number-color: #22c55e;
    --button-color: #3b82f6;
    --button-hover: #60a5fa;
    --toggle-bg: #1f2937;
    --toggle-text: #f9fafb;
    --input-bg: #0b1220;
    --input-border: #334155;
    --comment-bg: #0b1220;
}

* {
    box-sizing: border-box;
}

body {
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 1.5rem;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.2s ease, color 0.2s ease;
}

.container {
    text-align: center;
    background-color: var(--panel-color);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 16px 40px var(--shadow-color);
    width: min(100%, 520px);
    transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

h1 {
    margin: 0;
    font-size: clamp(1.8rem, 4vw, 2.4rem);
}

.lotto-numbers {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin: 2rem 0;
}

.lotto-number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--number-color);
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    box-shadow: 0 10px 20px rgba(34, 197, 94, 0.25);
}

.comments-section {
    margin-top: 2rem;
    text-align: left;
}

.comments-header h2 {
    margin: 0;
    font-size: 1.3rem;
}

.comments-header p {
    margin: 0.35rem 0 1rem;
    color: var(--muted-color);
}

.comment-form {
    display: grid;
    gap: 0.8rem;
}

.comment-form input,
.comment-form textarea {
    width: 100%;
    padding: 0.9rem 1rem;
    border: 1px solid var(--input-border);
    border-radius: 14px;
    background-color: var(--input-bg);
    color: var(--text-color);
    font: inherit;
    resize: vertical;
}

.comment-form input:focus-visible,
.comment-form textarea:focus-visible {
    outline: 3px solid rgba(59, 130, 246, 0.25);
    outline-offset: 2px;
}

#comment-submit {
    padding: 0.85rem 1.2rem;
    border: none;
    border-radius: 999px;
    background-color: var(--button-color);
    color: #fff;
    font-size: 1rem;
    cursor: pointer;
    transition: transform 0.2s ease, background-color 0.2s ease;
}

#comment-submit:hover {
    transform: translateY(-1px);
    background-color: var(--button-hover);
}

#comment-submit:focus-visible {
    outline: 3px solid rgba(59, 130, 246, 0.35);
    outline-offset: 3px;
}

.comments-empty {
    margin-top: 1rem;
    color: var(--muted-color);
}

.comments-list {
    display: grid;
    gap: 0.9rem;
    margin-top: 1rem;
}

.comment-card {
    padding: 1rem;
    border: 1px solid var(--input-border);
    border-radius: 16px;
    background-color: var(--comment-bg);
}

.comment-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.comment-author {
    font-weight: 700;
}

.comment-date {
    color: var(--muted-color);
    font-size: 0.9rem;
}

.comment-body {
    margin: 0;
    color: var(--text-color);
    white-space: pre-wrap;
    word-break: break-word;
}

#generate-btn,
#theme-toggle {
    padding: 0.8rem 2rem;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    color: #fff;
    border-radius: 999px;
    transition: transform 0.2s ease, background-color 0.2s ease;
}

#generate-btn {
    background-color: var(--button-color);
}

#generate-btn:hover,
#theme-toggle:hover {
    transform: translateY(-1px);
}

#generate-btn:hover {
    background-color: var(--button-hover);
}

#theme-toggle {
    padding: 0.7rem 1rem;
    background-color: var(--toggle-bg);
    color: var(--toggle-text);
    flex-shrink: 0;
}

#generate-btn:focus-visible,
#theme-toggle:focus-visible {
    outline: 3px solid rgba(59, 130, 246, 0.35);
    outline-offset: 3px;
}

@media (max-width: 560px) {
    .container {
        padding: 1.5rem;
    }

    .toolbar {
        flex-direction: column;
    }

    #theme-toggle,
    #generate-btn,
    #comment-submit {
        width: 100%;
    }

    .comment-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
}