:root {
    color-scheme: light;
    --page-bg: linear-gradient(135deg, #eef2ff 0%, #f8fafc 45%, #dbeafe 100%);
    --card-bg: rgba(255, 255, 255, 0.82);
    --card-border: rgba(148, 163, 184, 0.25);
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --number-bg: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    --button-bg: linear-gradient(135deg, #0ea5e9 0%, #2563eb 100%);
    --button-bg-hover: linear-gradient(135deg, #0284c7 0%, #1d4ed8 100%);
    --button-text: #eff6ff;
    --shadow-soft: 0 18px 50px rgba(15, 23, 42, 0.12);
    --shadow-strong: 0 14px 30px rgba(15, 23, 42, 0.2);
    --input-bg: rgba(255, 255, 255, 0.78);
    --input-border: rgba(148, 163, 184, 0.35);
    --success: #15803d;
    --error: #b91c1c;
}

:root[data-theme='dark'] {
    color-scheme: dark;
    --page-bg: radial-gradient(circle at top, #1e293b 0%, #0f172a 50%, #020617 100%);
    --card-bg: rgba(15, 23, 42, 0.78);
    --card-border: rgba(148, 163, 184, 0.16);
    --text-primary: #e2e8f0;
    --text-secondary: #cbd5e1;
    --number-bg: linear-gradient(135deg, #22c55e 0%, #15803d 100%);
    --button-bg: linear-gradient(135deg, #38bdf8 0%, #2563eb 100%);
    --button-bg-hover: linear-gradient(135deg, #0ea5e9 0%, #1d4ed8 100%);
    --button-text: #e0f2fe;
    --shadow-soft: 0 20px 55px rgba(2, 6, 23, 0.45);
    --shadow-strong: 0 14px 34px rgba(2, 6, 23, 0.55);
    --input-bg: rgba(15, 23, 42, 0.75);
    --input-border: rgba(148, 163, 184, 0.24);
    --success: #4ade80;
    --error: #f87171;
}

* {
    box-sizing: border-box;
}

body {
    background: var(--page-bg);
    color: var(--text-primary);
    font-family: 'Helvetica Neue', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 24px;
    transition: background 0.3s ease, color 0.3s ease;
}

.container {
    text-align: center;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(18px);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow-soft);
    width: min(100%, 680px);
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 20px;
}

h1 {
    font-size: 2.5em;
    margin: 0;
    color: var(--text-primary);
}

.lotto-numbers {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 30px;
    gap: 12px;
    min-height: 60px;
}

.number {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--number-bg);
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.8em;
    font-weight: bold;
    box-shadow: var(--shadow-strong);
}

#generate-btn,
#theme-toggle {
    border: none;
    border-radius: 999px;
    cursor: pointer;
    transition: transform 0.2s ease, background 0.3s ease, box-shadow 0.3s ease;
    box-shadow: var(--shadow-strong);
}

#generate-btn {
    background: var(--button-bg);
    color: var(--button-text);
    padding: 15px 30px;
    font-size: 1.2em;
}

#theme-toggle {
    background: transparent;
    color: var(--text-secondary);
    padding: 12px 18px;
    font-size: 0.95em;
    border: 1px solid var(--card-border);
    box-shadow: none;
    white-space: nowrap;
}

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

#generate-btn:hover {
    background: var(--button-bg-hover);
    box-shadow: 0 18px 34px rgba(37, 99, 235, 0.28);
}

.contact-section {
    margin-top: 36px;
    padding-top: 32px;
    border-top: 1px solid var(--card-border);
    text-align: left;
}

.comments-section {
    margin-top: 36px;
    padding-top: 32px;
    border-top: 1px solid var(--card-border);
    text-align: left;
}

.section-copy {
    margin-bottom: 20px;
}

.eyebrow {
    margin: 0 0 8px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.contact-section h2 {
    margin: 0 0 10px;
    font-size: 1.6rem;
}

.section-description {
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.6;
}

.contact-form {
    display: grid;
    gap: 16px;
}

.field {
    display: grid;
    gap: 8px;
    color: var(--text-primary);
    font-weight: 600;
}

.field input,
.field textarea {
    width: 100%;
    border: 1px solid var(--input-border);
    border-radius: 14px;
    background: var(--input-bg);
    color: var(--text-primary);
    padding: 14px 16px;
    font: inherit;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.3s ease;
}

.field textarea {
    resize: vertical;
    min-height: 140px;
}

.field input::placeholder,
.field textarea::placeholder {
    color: var(--text-secondary);
}

.field input:focus-visible,
.field textarea:focus-visible {
    outline: none;
    border-color: rgba(14, 165, 233, 0.65);
    box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.18);
}

#submit-btn {
    border: none;
    border-radius: 999px;
    background: var(--button-bg);
    color: var(--button-text);
    padding: 15px 24px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s ease, background 0.3s ease, box-shadow 0.3s ease;
    box-shadow: var(--shadow-strong);
}

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

#submit-btn:disabled {
    opacity: 0.7;
    cursor: wait;
    transform: none;
}

.form-status {
    min-height: 24px;
    margin: 0;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.form-status[data-state='success'] {
    color: var(--success);
}

.form-status[data-state='error'] {
    color: var(--error);
}

.comments-frame {
    padding: 20px;
    border-radius: 18px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
}

#disqus_thread {
    color: var(--text-primary);
}

#generate-btn:focus-visible,
#theme-toggle:focus-visible,
#submit-btn:focus-visible {
    outline: 3px solid rgba(14, 165, 233, 0.35);
    outline-offset: 3px;
}

@media (max-width: 640px) {
    body {
        padding: 16px;
    }

    .container {
        padding: 28px 20px;
    }

    .header {
        flex-direction: column;
    }

    h1 {
        font-size: 2em;
    }

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