:root {
    --bg-color: #050508;
    --text-color: #ffffff;
    --accent-primary: #00f0ff; /* Неоновый голубой */
    --accent-secondary: #bd00ff; /* Неоновый фиолетовый */
    --surface-color: #12121a;
    --border-color: #2a2a3a;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

.background-glow {
    position: fixed;
    top: -20%; left: -10%;
    width: 50vw; height: 50vw;
    background: radial-gradient(circle, rgba(0,240,255,0.15) 0%, rgba(0,0,0,0) 70%);
    z-index: -1;
    filter: blur(60px);
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 40px;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    font-size: 24px;
    font-weight: 800;
    letter-spacing: 2px;
    color: var(--accent-primary);
    text-shadow: 0 0 10px rgba(0,240,255,0.5);
}

.theme-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
}

.container {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
}

.hero-title {
    font-size: 42px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 40px;
}

.highlight {
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 30px rgba(189,0,255,0.3);
}

.drop-zone {
    width: 100%;
    max-width: 600px;
    border: 2px dashed var(--border-color);
    border-radius: 24px;
    padding: 60px 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--surface-color);
    margin-bottom: 30px;
}

.drop-zone:hover, .drop-zone.dragover {
    border-color: var(--accent-primary);
    box-shadow: 0 0 30px rgba(0,240,255,0.2);
    transform: translateY(-2px);
}

.drop-zone .icon { font-size: 48px; margin-bottom: 10px; }
.drop-zone h2 { font-size: 20px; margin-bottom: 5px; }
.drop-zone p { color: #888; font-size: 14px; }

.options-panel {
    display: flex;
    flex-direction: column;
    gap: 15px;
    width: 100%;
    max-width: 600px;
    margin-bottom: 30px;
}

.custom-checkbox {
    display: flex;
    align-items: center;
    gap: 15px;
    cursor: pointer;
    background: var(--surface-color);
    padding: 15px 20px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    text-align: left;
}

.custom-checkbox input { display: none; }

.checkmark {
    width: 24px; height: 24px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    display: flex; align-items: center; justify-content: center;
    transition: all 0.2s;
}

.custom-checkbox input:checked + .checkmark {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    box-shadow: 0 0 10px rgba(0,240,255,0.5);
}

.checkmark::after {
    content: '✔'; color: #000; font-weight: bold; display: none;
}
.custom-checkbox input:checked + .checkmark::after { display: block; }

.checkbox-text { display: flex; flex-direction: column; }
.check-title { font-weight: 600; font-size: 14px; }
.check-desc { font-size: 12px; color: #888; margin-top: 2px; }

.atmosphere-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--accent-secondary);
    padding: 12px;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
}
.atmosphere-btn:hover {
    background: rgba(189,0,255,0.1);
    border-color: var(--accent-secondary);
}

.action-btn {
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    color: #000;
    border: none;
    padding: 18px 40px;
    border-radius: 30px;
    font-size: 18px;
    font-weight: 800;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.action-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(0,240,255,0.6);
}

.code-display {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    padding: 20px;
    border-radius: 16px;
    margin-bottom: 30px;
    animation: fadeIn 0.5s ease;
}

.code-number {
    font-size: 48px;
    font-weight: 800;
    color: var(--accent-primary);
    letter-spacing: 8px;
    margin: 10px 0;
    text-shadow: 0 0 15px rgba(0,240,255,0.5);
}

.code-hint { color: #888; font-size: 12px; }

footer {
    text-align: center;
    padding: 20px;
    color: #555;
    font-size: 12px;
    border-top: 1px solid var(--border-color);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Адаптив для телефонов (тот самый здравый смысл) */
@media (max-width: 600px) {
    header { padding: 15px 20px; }
    .hero-title { font-size: 28px; margin-bottom: 25px; }
    .drop-zone { padding: 40px 15px; }
    .action-btn { width: 100%; padding: 16px; }
    .code-number { font-size: 36px; letter-spacing: 4px; }
}

/* Стили для QR-кода и новых кнопок */
.qr-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 20px 0;
    padding: 20px;
    background: rgba(0, 240, 255, 0.05);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

#qrcode {
    background: white;
    padding: 10px;
    border-radius: 8px;
    margin-bottom: 10px;
}

#qrcode img {
    display: block;
    width: 200px;
    height: 200px;
}

.qr-hint {
    color: var(--accent-primary);
    font-size: 12px;
    text-align: center;
}

.code-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
    flex-wrap: wrap;
    justify-content: center;
}

.qr-toggle-btn, .copy-btn {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 10px 20px;
    border-radius: 12px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
}

.qr-toggle-btn:hover, .copy-btn:hover {
    border-color: var(--accent-primary);
    background: rgba(0, 240, 255, 0.1);
}

.status-message {
    margin-top: 20px;
    padding: 15px;
    border-radius: 12px;
    font-size: 14px;
    display: none;
}

.status-message.success {
    background: rgba(0, 255, 100, 0.1);
    border: 1px solid #00ff64;
    color: #00ff64;
    display: block;
}

.status-message.error {
    background: rgba(255, 0, 100, 0.1);
    border: 1px solid #ff0064;
    color: #ff0064;
    display: block;
}

.status-message.info {
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid var(--accent-primary);
    color: var(--accent-primary);
    display: block;
}

@media (max-width: 600px) {
    .code-actions {
        flex-direction: column;
    }
    .qr-toggle-btn, .copy-btn {
        width: 100%;
    }
    #qrcode img {
        width: 150px;
        height: 150px;
    }
}

/* Единый стиль для всех кнопок */
.action-btn,
.qr-scan-btn,
.qr-toggle-btn,
.copy-btn,
.atmosphere-btn,
.theme-btn {
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: 14px;
    padding: 12px 24px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

/* Главная кнопка действия (Подключиться, Сгенерировать код) */
.action-btn {
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    color: #000;
    border: none;
    font-size: 16px;
    font-weight: 800;
    padding: 16px 32px;
    text-transform: uppercase;
    letter-spacing: 1px;
    width: 100%;
    max-width: 400px;
}

.action-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(0,240,255,0.6);
}

.action-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Кнопка сканирования QR */
.qr-scan-btn {
    background: var(--surface-color);
    color: var(--accent-secondary);
    border: 1px solid var(--accent-secondary);
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
    display: block;
}

.qr-scan-btn:hover {
    background: rgba(189,0,255,0.1);
    box-shadow: 0 0 15px rgba(189,0,255,0.3);
}

/* Кнопки QR и Копировать */
.qr-toggle-btn,
.copy-btn {
    background: var(--surface-color);
    color: var(--text-color);
    flex: 1;
    min-width: 140px;
}

.qr-toggle-btn:hover,
.copy-btn:hover {
    border-color: var(--accent-primary);
    background: rgba(0,240,255,0.1);
}

/* Кнопка атмосферы */
.atmosphere-btn {
    background: transparent;
    color: var(--accent-secondary);
    border: 1px solid var(--border-color);
    width: 100%;
    max-width: 600px;
}

.atmosphere-btn:hover {
    background: rgba(189,0,255,0.1);
    border-color: var(--accent-secondary);
}

/* Кнопка темы в шапке */
.theme-btn {
    background: var(--surface-color);
    color: var(--text-color);
    padding: 8px 16px;
    font-size: 14px;
}

.theme-btn:hover {
    border-color: var(--accent-primary);
}

/* Поле ввода кода */
.code-input {
    width: 100%;
    max-width: 300px;
    padding: 16px;
    font-size: 24px;
    font-weight: 800;
    text-align: center;
    letter-spacing: 4px;
    background: var(--surface-color);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    color: var(--accent-primary);
    margin: 20px auto;
    display: block;
    transition: all 0.3s;
}

.code-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 15px rgba(0,240,255,0.3);
}

.code-input::placeholder {
    color: #555;
    letter-spacing: 2px;
}

/* Разделитель "или" */
.divider {
    display: flex;
    align-items: center;
    margin: 20px 0;
    color: #888;
    font-size: 14px;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.divider span {
    padding: 0 15px;
}

/* Статус сообщения (не кнопка!) */
.status-message {
    margin-top: 20px;
    padding: 15px;
    border-radius: 12px;
    font-size: 14px;
    display: none;
    text-align: center;
}

.status-message.success {
    background: rgba(0, 255, 100, 0.1);
    border: 1px solid #00ff64;
    color: #00ff64;
    display: block;
}

.status-message.error {
    background: rgba(255, 0, 100, 0.1);
    border: 1px solid #ff0064;
    color: #ff0064;
    display: block;
}

.status-message.info {
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid var(--accent-primary);
    color: var(--accent-primary);
    display: block;
}

/* Адаптив для мобильных */
@media (max-width: 600px) {
    .action-btn {
        font-size: 14px;
        padding: 14px 24px;
    }
    
    .qr-toggle-btn,
    .copy-btn {
        width: 100%;
    }
    
    .code-actions {
        flex-direction: column;
        gap: 10px;
    }
    
    .code-input {
        font-size: 20px;
        padding: 12px;
    }
}