:root {
    /* Colores base inspirados en Telegram */
    --tg-bg: var(--tg-theme-bg-color, #f0f2f5);
    --tg-text: var(--tg-theme-text-color, #222222);
    --tg-hint: var(--tg-theme-hint-color, #999999);
    --tg-link: var(--tg-theme-link-color, #248b65);
    --tg-primary: var(--tg-theme-button-color, #248b65); 
    --tg-primary-text: var(--tg-theme-button-text-color, #ffffff);
    --tg-sec-bg: var(--tg-theme-secondary-bg-color, #ffffff);
    
    --radius: 16px;
    --shadow: 0 4px 12px rgba(0,0,0,0.08);
}

/* Forzar suavizado de fuentes en móviles */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--tg-bg);
    color: var(--tg-text);
    margin: 0;
    padding: 0;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Pantalla de Bloqueo */
.telegram-block {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(15px); /* Desenfoque más elegante */
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.block-content {
    background: var(--tg-sec-bg);
    color: var(--tg-text);
    padding: 30px;
    border-radius: var(--radius);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    max-width: 280px;
    text-align: center;
    border: 1px solid rgba(255,255,255,0.1);
}

/* Tarjetas con mejor contraste en Dark Mode */
.card {
    background: var(--tg-sec-bg);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    margin-bottom: 16px;
}

/* Estilo para el Checkbox y su Label */
.checkbox-group {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 15px 4px;
    cursor: pointer;
}

/* Personalización del Checkbox */
input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--tg-primary); /* Color verde SIBEL */
    cursor: pointer;
}

.checkbox-label {
    font-size: 0.9rem;
    color: var(--tg-text);
    user-select: none;
}

/* Inputs con borde más fino */
input[type="text"] {
    width: 100%;
    background: var(--tg-bg);
    color: var(--tg-text);
    border: 1px solid rgba(120, 120, 128, 0.2);
    padding: 14px;
    border-radius: 12px;
    font-size: 1rem;
    box-sizing: border-box;
    transition: border-color 0.2s;
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--tg-primary);
    box-shadow: 0 0 0 3px rgba(36, 139, 101, 0.15);
}

/* Botones */
.btn {
    appearance: none;
    -webkit-tap-highlight-color: transparent;
    border: none;
    padding: 16px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: transform 0.1s ease;
}

.btn:active { transform: scale(0.96); }

.btn-primary {
    background-color: var(--tg-primary);
    color: var(--tg-primary-text);
}

.btn-secondary {
    background-color: rgba(120, 120, 128, 0.15);
    color: var(--tg-text);
}

/* Reader de QR */
.reader-container {
    width: 100%;
    border-radius: var(--radius);
    overflow: hidden;
    background: #000;
    margin-bottom: 16px;
}

.hidden { display: none !important; }