* {
    box-sizing: border-box;
}

:root {
    color-scheme: light;
    --page-bg: #f0f2f5;
    --app-bg: #ffffff;
    --text: #172033;
    --muted-text: #4b5563;
    --shadow: rgba(0, 0, 0, 0.12);
    --number-bg: #2f9e44;
    --number-text: #ffffff;
    --primary: #0b72e7;
    --primary-hover: #095bb8;
    --toggle-bg: #e8edf5;
    --toggle-text: #172033;
    --field-bg: #ffffff;
    --field-border: #cbd5e1;
    --focus-ring: rgba(11, 114, 231, 0.35);
}

body.dark-mode {
    color-scheme: dark;
    --page-bg: #111827;
    --app-bg: #1f2937;
    --text: #f9fafb;
    --muted-text: #d1d5db;
    --shadow: rgba(0, 0, 0, 0.35);
    --number-bg: #22c55e;
    --number-text: #052e16;
    --primary: #60a5fa;
    --primary-hover: #3b82f6;
    --toggle-bg: #374151;
    --toggle-text: #f9fafb;
    --field-bg: #111827;
    --field-border: #4b5563;
    --focus-ring: rgba(96, 165, 250, 0.4);
}

body {
    font-family: 'Arial', sans-serif;
    background-color: var(--page-bg);
    color: var(--text);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    margin: 0;
    padding: 2rem 0;
    transition: background-color 0.2s ease, color 0.2s ease;
}

#app {
    width: min(92vw, 520px);
    background-color: var(--app-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 12px 32px var(--shadow);
    text-align: center;
    transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

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

h1 {
    margin: 0;
    color: var(--text);
    font-size: 1.7rem;
    line-height: 1.2;
}

.generator-section {
    margin-top: 1.5rem;
}

#lotto-numbers {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin: 2rem 0;
    min-height: 50px;
}

.lotto-number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--number-bg);
    color: var(--number-text);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
}

button {
    border: none;
    cursor: pointer;
    font-weight: 700;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

button:focus-visible {
    outline: 3px solid var(--focus-ring);
    outline-offset: 3px;
}

input,
textarea {
    width: 100%;
    border: 1px solid var(--field-border);
    border-radius: 5px;
    background-color: var(--field-bg);
    color: var(--text);
    font: inherit;
    padding: 10px 12px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

input:focus,
textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--focus-ring);
    outline: none;
}

textarea {
    resize: vertical;
}

#theme-toggle {
    flex: 0 0 auto;
    min-width: 96px;
    background-color: var(--toggle-bg);
    color: var(--toggle-text);
    padding: 9px 12px;
    font-size: 0.9rem;
    border-radius: 5px;
}

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

#generate-btn {
    background-color: var(--primary);
    color: #ffffff;
    border: none;
    padding: 10px 20px;
    font-size: 1rem;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

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

.partnership-section {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--field-border);
    text-align: left;
}

.partnership-section h2 {
    margin: 0 0 1rem;
    color: var(--text);
    font-size: 1.25rem;
    line-height: 1.2;
    text-align: center;
}

.partnership-form {
    display: grid;
    gap: 0.75rem;
}

.partnership-form label {
    color: var(--muted-text);
    font-size: 0.9rem;
    font-weight: 700;
}

#partnership-submit {
    margin-top: 0.5rem;
    background-color: var(--primary);
    color: #ffffff;
    padding: 11px 18px;
    font-size: 1rem;
    border-radius: 5px;
}

#partnership-submit:hover {
    background-color: var(--primary-hover);
}

.comments-section {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--field-border);
    text-align: left;
}

#disqus_thread {
    min-height: 240px;
}

.comments-section noscript {
    color: var(--muted-text);
    font-size: 0.95rem;
    line-height: 1.5;
}

.comments-section a {
    color: var(--primary);
}

@media (max-width: 420px) {
    body {
        padding: 1rem 0;
    }

    #app {
        padding: 1.5rem;
    }

    .app-header {
        align-items: stretch;
        flex-direction: column;
    }

    #theme-toggle {
        width: 100%;
    }
}